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Clinical Calculators & Medical Scores

Guideline-based bedside calculators for clinicians. Free, mobile-friendly, computed locally — no data uploaded.

Anesthesiology

👄 Mallampati

Predict difficult intubation from oropharyngeal view.

🛏️ Aldrete

Readiness for discharge from post-anaesthesia recovery.

American Society of Anesthesiologists preoperative physical status classification, used for anesthetic risk communication.

🤢 Apfel PONV

Apfel's 4 risk factors predict postoperative nausea and vomiting (PONV) after general anesthesia, to guide prophylaxis.

🩸 Allowable Loss

Estimates intraoperative maximum allowable blood loss while staying above an acceptable minimum hematocrit.

Cardiology

Estimate mean arterial pressure from systolic and diastolic blood pressure.

Heart-rate–corrected QT interval.

Major-bleeding risk on anticoagulation in atrial fibrillation.

Risk of major adverse cardiac events in ED chest pain.

🫀 CHA₂DS₂-VASc

Annual stroke risk in non-valvular atrial fibrillation.

Peri-operative major cardiac risk in noncardiac surgery.

14-day risk of death, MI or urgent revascularisation in UA/NSTEMI.

❤️ Sgarbossa

Detect acute MI in the presence of LBBB or ventricular pacing.

Estimate myocardial oxygen demand (HR × systolic BP).

❤️ Pulse pressure

Difference between systolic and diastolic pressure.

Atherogenic cholesterol ratios (I: TC/HDL, II: LDL/HDL).

Surrogate for insulin resistance and atherogenic dyslipidaemia.

🫀 LDL (calc)

Calculate LDL cholesterol from a standard lipid panel.

Symptomatic functional classification of heart failure.

Heart-failure severity and prognosis in acute myocardial infarction.

ECG voltage criteria for left ventricular hypertrophy.

Prognostic score from exercise ECG (Bruce protocol).

Estimate major bleeding risk on anticoagulation in atrial fibrillation.

Predict major haemorrhage risk on warfarin in atrial fibrillation.

Risk-stratify chest pain in the emergency department for major adverse cardiac events.

Estimate the probability of heart failure with preserved ejection fraction.

❤️ TIMI STEMI

Predict 30-day mortality in ST-elevation myocardial infarction.

Weigh benefit vs bleeding risk of prolonged dual antiplatelet therapy after PCI.

Estimate likelihood that chest pain is due to coronary artery disease in primary care.

Risk-stratify possible cardiac chest pain (Emergency Department Assessment of Chest Pain Score).

❤️ Cardiac markers

Troponin (99th percentile / dynamic / 0-1h), natriuretic peptides (BNP/NT-proBNP age cut-offs) and D-dimer (age-adjusted) interpretation.

🫀 Lipid panel

Reference cut-offs for TC/LDL/HDL/TG/non-HDL and LDL targets by ASCVD risk, with management points for high triglycerides.

❤️ ASCVD 10-yr

2013 ACC/AHA Pooled Cohort Equations (PCE): estimate the 10-year risk of atherosclerotic cardiovascular disease in primary-prevention adults aged 40–79.

🫀 AF anticoag

Non-valvular atrial fibrillation: combine stroke risk (CHA₂DS₂-VASc) and bleeding risk (HAS-BLED) into a guideline-based anticoagulation decision, drug preference and bleeding-management advice.

🩺 LDL-C target

Per the 2023 Chinese guideline for lipid management, determine ASCVD risk stratum and the corresponding LDL-C / non-HDL-C targets and initial lipid-lowering strategy.

🫀 SCAI Shock Stage

SCAI A–E five-stage cardiogenic-shock classification, stratifying in-hospital mortality and escalation-of-support decisions.

🫀 Forrester Class

Classifies acute MI/heart failure hemodynamics into four subsets by cardiac index (CI) and pulmonary capillary wedge pressure (PCWP).

🦠 Duke Endocarditis

Determines infective endocarditis as definite/possible/rejected by major/minor criteria (Modified Duke / 2023 Duke-ISCVID clinical criteria).

🫀 Acute Pericarditis

ESC 2015: ≥ 2/4 clinical criteria diagnose acute pericarditis, with prompts for high-risk admission indications.

🫀 Cardiac Tamponade

Determines cardiac tamponade combining clinical signs (Beck's triad/pulsus paradoxus) and echo findings, and guides emergent management.

CardShock score (7 variables, 0–9) predicts in-hospital mortality in cardiogenic shock, for early stratification and escalation decisions.

🫀 Gupta MICA framework

NSQIP-derived Gupta model predicting 30-day postoperative MI/cardiac-arrest probability: a logistic with per-procedure coefficients. This tool is a framework + official link.

🫀 GRACE framework

GRACE uses 8-variable nonlinear regression (a banded look-up nomogram) to estimate ACS in-hospital and 6-month mortality risk: this tool is an input framework + risk bands + official calculator link (it does not reproduce the look-up).

🫀 EuroSCORE II framework

EuroSCORE II uses ~18-item logistic regression to estimate in-hospital mortality risk for cardiac surgery: this tool is an input framework + official calculator link (it does not reproduce the proprietary coefficients).

🫀 MCS/ECMO indications

Choosing IABP/Impella/VA-ECMO by type of cardiogenic-shock failure, integrating recent RCTs and guideline recommendations.

🐢 ACLS bradycardia

ACLS for adult symptomatic bradycardia: atropine, transcutaneous pacing, dopamine/epinephrine infusion (AHA 2020).

📈 Stable wide-QRS tachycardia

Management of stable wide-QRS (≥ 0.12 s) tachycardia: adenosine (regular monomorphic only) and antiarrhythmic infusion (AHA 2020).

🫀 HF quadruple therapy

Classifies heart failure by LVEF, gives the 'new quadruple therapy' starting direction for HFrEF, and flags drug cautions by blood pressure/renal function/potassium.

🩺 Hypertension initiation

Based on office BP grade and cardiovascular risk stratification, gives the timing of antihypertensive initiation and the BP target.

❤️ ACS antithrombotic strategy

Based on STEMI/NSTE-ACS and PCI feasibility/risk stratification, gives the timing of reperfusion or intervention and the antiplatelet/anticoagulation direction.

💓 AF rate/rhythm

Based on hemodynamics, LVEF, symptoms, and AF duration, gives rate-control targets/drugs, rhythm control, and cardioversion anticoagulation direction.

💔 Acute HF management

Profiles by perfusion (warm/cold) and congestion (wet/dry) and gives direction for diuresis, vasodilation, and inotropes.

🩺 Hypertensive emergency

Distinguishes hypertensive emergency from urgency, and by target organ gives the BP goal, rate of reduction, and preferred IV drug.

⚡ AF cardioversion anticoagulation

By AF duration and hemodynamic status, gives the peri-cardioversion anticoagulation strategy.

🫀 QTc multi-formula

Gives Bazett, Fridericia, Framingham, and Hodges QTc from QT and heart rate simultaneously, for choosing among them at extreme heart rates.

Estimates cardiac output (CO) by the Fick principle from oxygen consumption and arteriovenous oxygen difference, also giving the cardiac index (CI) when BSA is provided.

🫀 Modified shock index

The ratio of heart rate to mean arterial pressure, more sensitive than the conventional shock index for hemodynamic instability.

🫀 Teichholz EF

Estimates left-ventricular ejection fraction (EF) and fractional shortening (FS) from M-mode end-diastolic/end-systolic dimensions.

Baseline in-hospital major-bleeding risk in NSTE-ACS, based on 8 admission variables; higher scores mean higher bleeding risk.

Annual stroke risk in non-valvular AF (older simplified version): heart failure, hypertension, age, diabetes, prior stroke.

Critical Care

🚨 Sepsis Bundle

From lactate and hypotension/shock status, give the SSC Hour-1 bundle fixed items, fluid resuscitation and vasopressor targets.

Discriminate diabetic ketoacidosis (DKA) from hyperglycemic hyperosmolar state (HHS) by glucose, blood gas, ketones and osmolality, with initial management points.

🚑 Anaphylaxis Management

Give the IM epinephrine dose by weight, plus positioning, fluids and follow-on management by hypotension/refractory/beta-blocker status.

🫁 ARDSnet lung-protective ventilation

Calculates low tidal volume by predicted body weight, the plateau-pressure target and the PEEP/FiO₂ ladder to implement ARDSnet lung-protective ventilation.

🩸 ICU glucose control

Gives the ICU glucose target (mostly 140–180 mg/dL) and management direction by current glucose and population, avoiding hypoglycemia from intensive control.

🧠 CAM-ICU delirium

Determines ICU delirium by the four-feature CAM-ICU algorithm: features 1 + 2 AND (3 OR 4) is positive; assess RASS first.

Pain assessment in ICU patients unable to self-report: 4 items each 0–2, total 0–8, > 2 indicates significant pain needing analgesia.

💊 Stress ulcer prophylaxis

Determines whether an ICU patient needs stress ulcer prophylaxis by major/minor risk factors (any one major OR ≥ 2 minor).

🫁 SBT readiness screening

Before weaning, assesses whether the patient meets the readiness criteria to start a spontaneous breathing trial (SBT) — all must be met.

🩺 CRRT initiation indication

Determines whether an AKI patient needs to start renal replacement therapy by emergent indications (hyperkalemia/acidosis/volume overload/uremia/poisoning).

💉 Vasopressor/MAP

Per SSC 2021, gives the MAP target and vasopressor/inotrope/steroid escalation direction for septic shock.

🩺 IAH/ACS Grade

Grades intra-abdominal pressure (IAP) per WSACS criteria, determines ACS, and computes abdominal perfusion pressure (APP).

💧 Fluid Responsiveness

Uses dynamic indices (passive leg raise / fluid challenge / PPV·SVV) to determine fluid responsiveness and guide fluid decisions.

ICU disease-severity and in-hospital mortality assessment. Acute Physiology Score (12 items, worst value within 24 h) + age points + chronic-health points, 0–71.

🫁 Berlin ARDS

Classifies acute respiratory distress syndrome as mild/moderate/severe by oxygenation index (PaO₂/FiO₂; requires PEEP/CPAP ≥ 5).

🌡️ Post-Arrest TTM

Post-ROSC target-temperature/temperature-control decision (AHA 2023/2025): select and maintain a single target temperature for comatose patients, actively prevent fever.

🧠 Post-Arrest Neuroprognosis

Multimodal neuroprognostication for comatose patients after ROSC (ERC-ESICM 2021/2025): ≥ 72 h, requires ≥ 2 unfavorable indicators.

⚡ VF/pulseless VT

ACLS management of adult shockable rhythms: defibrillation energy, epinephrine, antiarrhythmic dosing (AHA 2020/2025).

ICU management of pulmonary hypertensive crisis and acute RV failure: optimize RV pre/afterload, maintain perfusion, lower PVR.

🔥 Burn sepsis

ABA burn sepsis 6-item triggers; ≥3 present with confirmed/suspected infection suggests sepsis.

🌫️ Inhalation injury

Grade inhalation injury severity by the abbreviated injury score (AIS 0–4) of the initial bronchoscopic appearance.

The modified NUTRIC (without IL-6) assesses nutrition risk in ICU patients; ≥ 5 (high risk) may benefit from aggressive nutrition support.

⚠️ Refeeding syndrome

By NICE criteria, determines high/extremely-high risk of refeeding syndrome to guide safe feeding initiation and electrolyte monitoring.

🩸 Lactate clearance

Calculates the percent clearance between two lactate values to assess the resuscitation response.

Critical care

Quick SOFA for risk of poor outcome in suspected infection.

Aggregate early-warning score for acute deterioration (SpO2 scale 1).

Systemic inflammatory response syndrome criteria (≥ 2 positive).

Grade organ dysfunction in critically ill patients (6 systems, 0–4 each).

Oxygenation severity in ventilated patients (esp. paediatric ARDS).

Predict success of high-flow nasal cannula in acute hypoxaemic respiratory failure.

Full Outline of UnResponsiveness — coma scale usable in intubated patients.

Grade agitation and sedation depth in the ICU.

Bedside physiological score to detect clinical deterioration.

Total oxygen carried per 100 mL of arterial blood.

Rate of oxygen delivery to tissues.

Afterload estimate from haemodynamic measurements.

🔪 Surgical Apgar

Predict major postoperative complications and death from intraoperative data.

🤢 Apfel PONV

Predict postoperative nausea and vomiting risk.

Support diagnosis of ventilator-associated pneumonia.

Predict non-invasive ventilation failure in hypoxaemic respiratory failure.

🧪 Compensation

Given a primary acid-base disorder, computes the expected compensation; deviation suggests a second disorder.

🧂 Corrected Na

Hyperglycemia dilutionally lowers measured sodium; correct sodium for glucose (Katz and Hillier).

RSBI = respiratory rate ÷ tidal volume (L); < 105 predicts successful weaning/extubation (Yang-Tobin).

Seven items estimating the risk of postoperative pulmonary complications in non-cardiac surgery (low/intermediate/high).

💧 Fluid rate

Resuscitation volumes, maintenance fluids (links to calculators), fluid choice and rate-safety points (4-2-1 maintenance is in a dedicated tool).

🫁 ABG 6-step

Six-step ABG interpretation: pH → primary disorder → compensation → anion gap → delta/delta → oxygenation (pairs with the acid-base calculators).

Blood lactate cut-offs, type A/B lactic acidosis causes and lactate clearance (a resuscitation/prognosis marker).

Emergency

24-hour crystalloid resuscitation volume for major burns.

Likelihood of acute appendicitis (MANTRELS).

📉 Shock Index

Heart rate divided by systolic BP — a marker of haemodynamic instability.

🦶 Ottawa Ankle

Decide whether ankle/foot X-rays are needed after injury.

🦵 Ottawa Knee

Decide whether a knee X-ray is needed after acute injury.

Whether CT is needed after minor head injury (GCS 13–15).

Determine whether cervical-spine imaging can be safely deferred after trauma.

🦴 Canadian C-spine

Stepwise rule for cervical-spine imaging in alert, stable trauma patients.

Recognition of stroke in the emergency room.

🫀 SF Syncope

Identify syncope patients at risk of a serious 7-day outcome (CHESS).

Lab-based risk indicator for necrotising soft-tissue infection.

Estimate likelihood of group A streptococcal pharyngitis.

Screen for acute aortic syndrome across three feature categories.

Predict the likelihood of an uncomplicated ureteral stone in acute flank pain.

Physiologic trauma severity score for triage and outcome prediction.

Predict need for massive transfusion in trauma.

Predict 30-day serious adverse events after emergency department syncope.

🔥 Revised Baux

Estimate mortality risk after major burns.

Seven weighted parameters (sex/SBP/HR/Hb/base excess/FAST/complex fracture) predicting the probability of massive transfusion in severe trauma (0–28).

🔥 Rule of Nines

Estimate adult burn total body surface area (% TBSA, Wallace rule of nines) for resuscitation and referral decisions.

🩸 ATLS shock

Classify ATLS hemorrhagic shock (I–IV) from vital signs and mental status/urine output, with resuscitation direction.

Eight perioperative parameters predicting mortality in secondary peritonitis (Mannheim Peritonitis Index).

Estimate burn severity and survival probability from sex, age, inhalation injury, full-thickness burn and %TBSA.

☠️ Antidotes

Specific antidotes and key doses/points for common poisonings; for life-threatening cases prioritise supportive care + poison-control contact.

🔄 Reversal agents

Dose, titration and risk points for naloxone (opioid) and flumazenil (benzodiazepine); supportive care is often safer.

💉 Tetanus prophylaxis

By wound type and tetanus immunization history, judges the need for vaccine and tetanus immune globulin (TIG).

💨 Carbon monoxide poisoning

By presence of hyperbaric-oxygen indications and pregnancy, gives the 100% oxygen and hyperbaric oxygen direction.

💪 Rhabdomyolysis

By CK level, hyperkalemia, and renal function, gives direction for aggressive fluids, monitoring, and dialysis indications.

💊 Opioid overdose · naloxone

By setting and opioid dependence, gives the naloxone dosing strategy, emphasizing ventilatory support and observation for recurrence.

🧠 Ottawa SAH

Used to help exclude subarachnoid hemorrhage in headache patients (a high-sensitivity screen).

Endocrinology

Estimate insulin resistance from fasting glucose and insulin.

🦋 Burch-Wartofsky

Likelihood of thyroid storm in thyrotoxicosis.

Estimate the average glucose of the past 2–3 months from HbA1c (ADAG formula).

🩸 Periop glucose

Inpatient/perioperative glucose targets, pre-op antidiabetic adjustment, steroid-induced hyperglycaemia and insulin-infusion points (ADA inpatient standards).

💊 Steroid stress dose

Perioperative stress dosing (by surgical magnitude), adrenal crisis management and long-term steroid tapering (Endocrine Society / Woodcock 2020).

🦋 TFT pattern

Reading common TSH/FT4/FT3 combinations: primary / subclinical / central / sick-euthyroid disease and pregnancy caveats.

🩸 Glucose/A1c

Estimate average glucose (eAG) from HbA1c and grade it; includes the ADA diabetes / prediabetes diagnostic criteria.

🦴 Calcium/PTH

PTH-based aetiology triage of hyper-/hypocalcaemia, the assessment sequence and the CKD-MBD pattern; correct for albumin or measure ionised calcium first.

🍬 T2DM glucose pathway

Based on comorbid ASCVD/heart failure/CKD, gives the guideline-recommended preferred add-on of SGLT2i / GLP-1RA on top of metformin.

🦴 Anti-osteoporosis start

Based on fragility-fracture history, BMD T-score, and FRAX risk, decide whether to start anti-osteoporosis medication and the intensity direction.

🦋 Hypothyroid LT4 start

Based on hypothyroidism type, TSH, and cardiac/pregnancy status, decide whether to start levothyroxine and the starting strategy and estimated dose.

🦋 Hyperthyroid treatment choice

Based on pregnancy, severity/goiter size, malignancy/compression, ATD failure, eye disease, and age, gives the direction of ATD / ¹³¹I / surgery.

🌡️ Thyroid storm

Use the Burch-Wartofsky score to judge the likelihood of thyroid storm and give a sequenced management plan.

🦴 Hypercalcemia

Based on calcium level, symptoms, and renal function, gives the direction for fluids, bisphosphonate/denosumab, calcitonin, etc.

🧈 Hypertriglyceridemia

Based on triglyceride level and ASCVD risk, gives the direction for fibrates/lifestyle/statin/icosapent ethyl.

🍬 Hypoglycemia management

Based on consciousness/swallowing status and IV access, gives the 15-15 rule oral carbohydrate or glucagon/IV glucose.

🧬 Insulin params

Estimates the correction factor (ISF) and insulin-to-carb ratio (ICR) from total daily dose (TDD); for initial reference only.

Estimates free androgen level from total testosterone and sex-hormone-binding globulin (SHBG), supporting assessment of hyperandrogenism (e.g. PCOS).

Gastroenterology

Risk of needing intervention in upper GI bleeding; identifies low-risk patients.

Rebleeding and mortality risk after upper GI bleeding (complete score).

Severity and mortality risk in acute pancreatitis (non-gallstone).

Early mortality risk in acute pancreatitis (within 24 h).

Severity of acute pancreatitis (PANCREAS criteria, at 48 h).

Endoscopic stigmata of peptic ulcer bleeding and rebleed risk.

Cleveland Clinic faecal incontinence severity score.

Classify stool form as a marker of transit time.

Predict in-hospital mortality in acute upper gastrointestinal bleeding.

Predict mortality and morbidity in perforated peptic ulcer.

Upper GI bleed risk score predicting need for intervention (transfusion, endoscopy, surgery).

Compute the acute pancreatitis CT severity index from the Balthazar CT grade and extent of necrosis (0–10).

🧪 Pancreatic enzymes

Interpreting amylase/lipase in acute pancreatitis diagnosis (lipase > 3× ULN), non-pancreatic elevations and pitfalls.

🩸 Upper GI bleeding

By bleeding type (variceal/non-variceal/undetermined), gives resuscitation, drugs, endoscopy timing, and variceal-specific management.

🔥 Acute pancreatitis management

By revised Atlanta severity and biliary/infection status, gives direction for fluid resuscitation, nutrition, ERCP, and antibiotics.

🟡 Acute cholangitis TG18

By Tokyo Guidelines TG18 grading (organ dysfunction and moderate criteria), gives biliary-drainage timing and antibiotic direction.

🟠 Acute cholecystitis TG18

By Tokyo Guidelines TG18 grading and surgical risk, gives direction for laparoscopic cholecystectomy/percutaneous cholecystostomy and antibiotics.

🩺 UC Severity

Grades acute ulcerative colitis flare severity from stool, rectal bleeding, and systemic markers.

Simplified clinical activity score for Crohn's disease (no labs), used for follow-up and treatment response.

🧫 Partial Mayo

Non-invasive UC activity score (no endoscopy), 3 items, 0–9 points, convenient for outpatient follow-up.

General

Calculate body mass index from weight and height, with WHO weight-status category.

Estimate body surface area (Mosteller formula) for dosing.

Ideal body weight and adjusted body weight for dosing.

Central adiposity and cardiometabolic risk indicator.

Surrogate marker of insulin resistance.

Comorbidity burden and 10-year survival estimate.

10-year risk of developing type 2 diabetes.

Estimate pancreatic beta-cell function from fasting glucose and insulin.

Quantitative insulin-sensitivity check index.

🔥 Inflam markers

Interpretation and common cut-offs for CRP/ESR, procalcitonin (PCT) and ferritin; all non-specific and require clinical correlation.

💧 Effusion/CSF

Pleural fluid Light's criteria, ascites SAAG and CSF (bacterial/viral/TB) interpretation (pairs with the Light and CSF correction tools).

📋 Lab reference

Common adult reference ranges (CBC/chemistry/renal/liver/coagulation) and common critical values; lab-dependent — follow your own laboratory.

🧮 ACS-NSQIP framework

American College of Surgeons NSQIP surgical risk calculator: per-CPT proprietary logistic models. This tool is an input framework + official link (it does not reproduce the proprietary computation).

🟢 TG18 cholecystitis

Determine acute cholecystitis severity grade (I/II/III) per Tokyo Guidelines 2018.

🩻 AAST splenic injury

Grade splenic injury I–V per the AAST 2018 Organ Injury Scale (imaging criteria).

🫀 AAST hepatic injury

AAST 2018 hepatic injury scale (grades I–V), graded by the most severe imaging/operative feature, to guide management.

🦴 Pelvis Young-Burgess

Classify by mechanism (APC/LC/VS/CM) to judge pelvic-ring stability and bleeding risk.

Assesses pressure-injury (pressure-ulcer) risk in hospitalized/bedbound patients across 6 dimensions, 6–23 points; lower means higher risk.

A common scale for inpatient fall risk, 6 items, 0–125 points.

Grades overall frailty in older/chronically ill patients on a 1–9 scale to support risk and decision assessment.

Screens adults for malnutrition risk using BMI, recent weight loss, and the impact of acute illness.

Five-item rapid screen for sarcopenia risk, suitable for community and outpatient use.

🩸 Blood Volume

Estimates total blood volume from weight and a population coefficient, for blood-loss/transfusion and allowable-loss calculations.

Hematology

Pre-test probability of deep vein thrombosis.

Pre-test probability of pulmonary embolism.

Rule out PE in low-risk patients without D-dimer (all 8 negative).

VTE risk in hospitalised medical patients.

Differentiate iron deficiency from thalassaemia trait in microcytosis.

Calculate ANC to grade neutropenia and infection risk.

Clinical pre-test probability of pulmonary embolism (objective, revised Geneva).

🦵 IMPROVE VTE

VTE risk in hospitalised medical patients (IMPROVE model).

Risk-stratify acute PE for 30-day mortality (simplified PESI).

30-day mortality class in acute PE (original PESI).

🩸 Iron deficit

Calculate total iron deficit for replacement.

Assess iron status from serum iron and TIBC.

An inflammatory and prognostic marker from the differential.

Composite inflammatory marker (platelet × neutrophil / lymphocyte).

Assess the marrow response to anaemia (corrected reticulocyte count).

Pre-test probability of heparin-induced thrombocytopenia (HIT).

Diagnose overt disseminated intravascular coagulation.

Probability of severe ADAMTS13 deficiency (TTP) in thrombotic microangiopathy.

Stratify 30-day risk in normotensive (non-high-risk) pulmonary embolism.

Decide eligibility for outpatient management of pulmonary embolism.

Venous thromboembolism risk stratification for surgical inpatients (2005 version) to guide prophylaxis.

🩸 Anemia workup

MCV-based anemia differential plus reticulocyte/iron-study interpretation (pairs with the RPI, TSAT and iron-deficit tools).

🩸 Coag interpret

Interpreting PT/aPTT combinations, mixing studies, DIC and platelet considerations.

Differential of neutrophil/lymphocyte/eosinophil/monocyte/basophil increases and decreases, with morphology and critical-value cues.

🧲 Iron studies

Pattern reading of ferritin / transferrin saturation (TSAT) / TIBC / sTfR: iron deficiency vs anemia of chronic disease vs iron overload.

🩸 Thrombocytopenia

Severity and bleeding risk, mechanistic classification, workup cues and emergencies (TTP/HIT/DIC) for a low platelet count.

Laboratory markers of haemolysis (LDH/haptoglobin/indirect bilirubin/reticulocytes/smear), intra- vs extravascular, DAT triage and causes.

🩸 VTE (medical)

The Padua Prediction Score assesses venous thromboembolism risk in medical inpatients and gives a guideline recommendation on pharmacological prophylaxis.

🧷 VTE (surgical)

The Caprini Risk Assessment Model stratifies VTE risk in surgical inpatients and recommends a prophylaxis strategy.

🩸 Anticoagulation reversal

By anticoagulant class, gives the specific reversal/antidote and general hemostatic support direction.

⏳ VTE anticoagulation duration

By provoking-factor type and bleeding risk, judges whether VTE anticoagulation stops at 3 months or is extended/indefinite.

🩸 Transfusion threshold

By hemoglobin and clinical context, gives the RBC transfusion threshold under a restrictive strategy.

🦵 DVT diagnostic pathway

By two-level Wells clinical probability and D-dimer, gives the next step (D-dimer/compression ultrasound) and exclusion criteria.

🩸 Transfusion reaction management

By reaction type, gives targeted management and emphasizes the universal first steps of stopping the transfusion, verifying, sampling, and reporting.

Diagnostic probability score for secondary (reactive) hemophagocytic lymphohistiocytosis, 9 items, 0–337 points.

Classic prognostic index for newly diagnosed chronic-phase CML (pre-treatment), computed from age, spleen size, platelets, and blasts.

Hepatology

🫀 Child-Pugh

Grade severity of chronic liver disease (Class A/B/C).

Model for End-stage Liver Disease with sodium (UNOS).

Non-invasive estimate of advanced hepatic fibrosis.

🫀 Maddrey DF

Severity of alcoholic hepatitis and steroid decision threshold.

Prognosis in alcoholic hepatitis to guide corticosteroid use.

Non-invasive marker of hepatic fibrosis/cirrhosis.

Predict advanced fibrosis in non-alcoholic fatty liver disease.

Determine whether ascites is due to portal hypertension.

🫀 West Haven

Grade the severity of hepatic encephalopathy.

Predict response to corticosteroids at day 7 of treatment.

Latest MELD for end-stage liver disease, adding sex, albumin and interaction terms.

Determine whether hepatocellular carcinoma meets the Milan criteria — the classic morphologic standard for liver transplant candidacy.

🫀 LFT pattern

Pattern-based reading of abnormal LFTs: R factor (hepatocellular/cholestatic), bilirubin, synthetic function and isolated abnormalities.

Sodium-adjusted MELD (UNOS 2016), a reference for end-stage liver disease severity and allocation.

🟡 HBV antiviral indication

By HBV DNA, ALT, cirrhosis, and risk factors, judges whether a person with chronic HBV infection meets antiviral treatment indications.

🟢 HCV antiviral

By cirrhosis status and pregnancy, gives the HCV DAA regimen direction, pre-treatment assessment, and efficacy endpoint.

🫄 Spontaneous bacterial peritonitis

By ascitic-fluid PMN, acquisition setting, and prior history, gives diagnosis, empiric antibiotics, albumin, and prophylaxis direction.

🫀 King's College

Liver transplant indication in acute (fulminant) liver failure, with separate acetaminophen and non-acetaminophen criteria.

Objectively assesses hepatic functional reserve using only albumin and bilirubin; widely used for HCC/cirrhosis prognosis and more objective than Child-Pugh.

MELD without INR, for patients on oral anticoagulation (where INR is distorted) for liver/heart-failure prognosis.

Imaging

🧠 Myelination

Look up expected T1/T2-weighted MRI signal at key anatomic sites (posterior limb of internal capsule, corpus callosum splenium/genu, subcortical white matter, etc.) by corrected gestational/chronological age, to help judge whether myelination is age-appropriate or possibly delayed.

🧠 MRI Myelination

Compare preterm/neonatal/infant MRI T1/T2 signal against normal myelination milestones, structure by structure, to identify delayed myelination by corrected or gestational age.

🧠 Fetal Brain Timeline

Appearance timeline of fetal sulci, gyri and key structures (Sylvian fissure + insular opercularization, parieto-occipital, calcarine, cingulate, central sulcus, corpus callosum, cavum septi pellucidi, ventricular atrium, cerebellar vermis, olfactory sulcus) across anatomy, prenatal ultrasound and fetal MRI — earliest vs reliably visible, with per-structure clinical significance and red flags.

Infectious disease

Likelihood of group A streptococcal pharyngitis.

Estimate likelihood of streptococcal sore throat to guide antibiotics.

Severity-of-illness score for patients with bacteraemia.

🦠 Abx spectrum

Overview of the coverage (spectrum) of common antibiotic classes; empiric choice must factor in local susceptibility (e.g. CHINET), infection site and institutional protocol.

🫘 Abx renal adjust

Adjustment/avoidance points and key safety notes for common antibiotics by renal function (CrCl); includes a 'generally no adjustment' list — follow the label.

📐 PK/PD dosing

PK/PD targets and optimised dosing strategies for time-dependent / concentration-dependent / AUC-type antibiotics (extended infusion, once-daily, etc.).

🦠 C. difficile infection

By episode and severity, gives fidaxomicin/vancomycin/fulminant regimens and recurrence management direction.

🫁 Pulmonary TB regimen

By new/retreatment/drug-resistant status, gives standardized anti-TB regimens, principles, and monitoring direction.

🧠 Bacterial meningitis

By clinical scenario, gives empiric antibiotics and dexamethasone direction, emphasizing early dosing not delayed by workup.

Laboratory medicine

🧪 Lab Interpreter

Enter CBC / liver & renal function / electrolytes / glucose / lipids / inflammation / thyroid / coagulation values to flag each as high, low or critical, auto-calculate eGFR, anion gap, albumin-corrected calcium, Friedewald LDL and FIB-4, and recognise liver-injury type, anemia class and thyroid pattern.

Neonatology

👶 Neonatal Resuscitation (NRP)

Gives the next neonatal resuscitation step by heart rate and resuscitation phase (PPV → chest compressions → epinephrine), per AHA/AAP NRP.

👶 Sarnat staging (HIE)

Grades neonatal HIE (stages 1–3) by consciousness/tone/reflexes/autonomic function/seizures and flags therapeutic-hypothermia eligibility.

👶 NEC Bell staging

Stages NEC by clinical and abdominal X-ray features using the modified Bell criteria (IA–IIIB) and indicates the management direction.

👶 ROP screening indication

Determines whether a preterm infant needs fundus screening per the Chinese ROP screening guideline, with first-exam timing and staging reference.

👶 Neonatal hypoglycemia

Gives age-based intervention thresholds and targets for neonatal (at-risk) glucose (AAP 2011 operational thresholds + PES targets).

Seven items (GA / behavioral state / heart rate increase / oxygen desaturation / brow bulge / eye squeeze / nasolabial furrow) each 0–3, total 0–21.

👶 Neonatal bilirubin

AAP 2022 decision framework: select the curve by GA/hours-of-age/neurotoxicity risk factors and give phototherapy · escalation · exchange logic (exact thresholds from the official nomogram).

👶 EOS risk (Kaiser)

Kaiser EOS calculator framework: combine perinatal risk factors + clinical grade → management tier (exact risk value from the official calculator).

Nephrology

Serum anion gap with optional albumin correction.

Estimate creatinine clearance for renal drug dosing.

Estimated GFR by the race-free CKD-EPI 2021 creatinine equation.

Differentiate pre-renal from intrinsic acute kidney injury.

Expected PaCO₂ for a metabolic acidosis.

Calculated serum osmolality and reference for osmolal gap.

Assess renal potassium handling in dyskalaemia.

🧪 Delta ratio

Detect a mixed metabolic acid–base disorder.

💧 Water deficit

Estimate the free water deficit in hypernatraemia.

Assess urinary ammonium in normal-anion-gap metabolic acidosis.

🧪 Corrected Na

Adjust measured sodium for the dilutional effect of high glucose.

🧪 Na deficit

Estimate the sodium deficit to plan correction in hyponatraemia.

Differentiate pre-renal AKI from ATN, useful after diuretics.

🦴 Corrected Ca

Adjust total calcium for low albumin.

🧪 Corrected AG

Adjust the anion gap for hypoalbuminaemia.

🧪 HCO₃ deficit

Estimate the bicarbonate deficit in metabolic acidosis.

🦴 Ca × PO₄

Product of calcium and phosphate, relevant to vascular calcification risk.

Predict contrast-induced acute kidney injury risk after PCI.

🧪 Urinalysis

Framework for the dipstick/appearance, urine sediment cells, casts, proteinuria and crystals (pairs with the UPCR, FENa and urine-AG tools).

KDIGO heat-map (eGFR stage × albuminuria stage) risk stratification, follow-up frequency and nephrology referral advice for chronic kidney disease.

🫘 DKD management

Based on eGFR and albuminuria, gives multi-pillar management direction across RAAS, SGLT2i, finerenone, glucose-lowering, and blood pressure.

🧫 AKI staging

Per KDIGO criteria, uses baseline/current creatinine, urine output, and RRT status to determine AKI stage and gives management principles.

🩸 Renal anemia management

By Hb and iron status (ferritin/TSAT) and dialysis modality, gives iron, ESA/HIF-PHI, and target direction.

⚡ Hyperkalemia management

By potassium level and ECG changes, judges a hyperkalemic emergency and gives the three-step approach: membrane stabilization, intracellular shift, and potassium removal.

💧 Na Prediction

Predicts the change in serum sodium per liter of a given infusate to guide hypo-/hypernatremia fluid planning.

Stages acute kidney injury (AKI) by serum creatinine change and urine output per KDIGO.

Estimates 24-hour urinary protein from a random urine protein-to-creatinine ratio.

Distinguishes renal phosphate wasting from extrarenal causes of hypophosphatemia and reports tubular reabsorption of phosphate (TRP).

Neurology

Score consciousness from eye, verbal and motor responses (3–15).

Short-term stroke risk after a transient ischaemic attack.

Quantify neurological deficit severity in acute stroke (0–42).

Global disability/dependence after stroke.

Brief screen for cognitive impairment.

30-day mortality risk after intracerebral haemorrhage.

Clinical severity grading of aneurysmal SAH.

GCS-based grading of aneurysmal SAH.

🧠 Mod. Fisher

CT-based vasospasm risk after subarachnoid haemorrhage.

Pre-hospital screen for large-vessel occlusion.

Field assessment for large-vessel occlusion stroke.

Combine Glasgow Coma Scale with pupil reactivity for finer prognostication.

🩻 Carotid stenosis

Compute extracranial ICA stenosis from diameters (NASCET, optional ECST) with grade and management direction.

🩻 Intracranial stenosis

Compute intracranial arterial stenosis from diameters (WASID method) with grade and management direction (distinct from extracranial NASCET).

Estimates the 5-year rupture risk of an unruptured intracranial aneurysm from population, hypertension, age, size, prior SAH and site.

Estimates the 3/5-year growth risk of an unruptured intracranial aneurysm from prior SAH, location, age, population, size and shape.

Surgical risk grade for brain arteriovenous malformation, summing size, eloquence and venous drainage (grade 1–5).

🧠 Stroke IV Thrombolysis

Judge whether acute ischemic stroke is suitable for alteplase/tenecteplase IV thrombolysis by time window and contraindications.

🧠 Stroke Secondary Prevention

By stroke mechanism and whether minor/intracranial large-artery stenosis, give antithrombotic regimen plus statin and blood-pressure targets.

🧠 Stroke Thrombectomy Indication

Judge mechanical thrombectomy indication by time window, circulation, large-vessel occlusion and imaging (NIHSS/ASPECTS/mismatch).

🧠 Status Epilepticus

Give first-line, second-line and refractory management plus whole-course points for convulsive status epilepticus by time stage.

🧠 ICH Management

By systolic pressure, anticoagulation relation and surgical indication, give blood-pressure target, anticoagulation reversal and neurosurgical assessment direction.

🧠 Subarachnoid Hemorrhage

By whether the aneurysm is secured, hydrocephalus and symptomatic DCI, give nimodipine, BP control, drainage and induced-hypertension direction.

🧠 Cerebral Venous Thrombosis

By whether hemorrhage is present and whether there is progressive deterioration, give anticoagulation, oral maintenance, endovascular/decompression and symptomatic direction.

🧠 Brain Death Determination

Adult brain death / death by neurologic criteria (BD/DNC) clinical determination workflow (AAN/AAP/CNS/SCCM 2023).

🧠 Brain Herniation

Localising signs of common brain-herniation types and emergency intracranial-pressure reduction.

🧠 TBI Grading & Management

Grade TBI severity by GCS, with ICP-monitoring indications and tiered management of severe TBI (BTF).

CPP = MAP − ICP; assesses cerebral perfusion and intracranial-pressure targets in severe TBI and other neurocritical care (BTF).

Clinical-imaging recognition and management of PRES (blood-pressure control, removing triggers, seizure control).

🧠 BCVI screening

Decide, by the expanded Denver criteria, whether blunt trauma warrants neck CTA to screen for cerebrovascular injury.

🧠 CSF WBC Correction

In bloody CSF, subtracts the white cells introduced by admixed red cells using the peripheral blood counts.

Rapidly estimates spontaneous intracerebral hemorrhage (ICH) volume from three CT diameters: (A×B×C)/2.

Obstetrics

Readiness of the cervix for labour induction.

🤰 CRL → GA

Estimate first-trimester gestational age from crown-rump length using the Robinson formula.

Estimates fetal weight from ultrasound biometry (BPD/HC/AC/FL) using the Hadlock four-parameter formula.

📏 Biometry GA

From BPD/HC/AC/FL (mm), estimates the gestational age implied by each parameter and a composite ultrasound GA (Hadlock 1984), with Hadlock-1985 estimated fetal weight; compare with clinical GA to flag growth deviation.

📐 Measurement reference

Enter gestational age and a measured value (mm) to obtain the GA reference mean ± SD / normal range, z-score and percentile, with possible problems and clinical management direction. Covers BPD/HC/AC/FL/transcerebellar diameter/lateral ventricle/cisterna magna/nuchal fold/NT.

Oncology

Functional status grading used in oncology.

Functional status on a 0–100 scale.

Predict venous thromboembolism risk in ambulatory cancer patients on chemotherapy.

Identify low-risk febrile neutropenia suitable for outpatient management.

Prognosis in aggressive non-Hodgkin lymphoma.

Prognosis in follicular lymphoma.

Inflammation-based prognostic score in cancer.

Nutrition/immune index predicting surgical and oncologic outcomes.

RMI = ultrasound score U × menopausal status M × CA-125; a cut-off of 200 separates benign from malignant and guides gynecologic-oncology referral.

🎗️ GTN score

Sum of 8 prognostic factors for gestational trophoblastic neoplasia; ≤ 6 low risk (single-agent chemo), ≥ 7 high risk (combination chemo).

🧬 TLS prophylaxis

TLS risk stratification, prophylaxis (hydration/allopurinol/rasburicase), monitoring and the Cairo-Bishop definition.

🎗️ Tumor markers

Reference upper limits, main associations and false-positive/negative limitations of common tumor markers; mostly for monitoring, not screening.

🎗️ Cervical FIGO

FIGO 2018 stage for cervical cancer from local extent, nodes, adjacent organs, and distant metastases, with management direction.

🎗️ Ovarian FIGO Stage

Derive the FIGO 2014 stage from confinement, pelvic spread, retroperitoneal nodes, extrapelvic peritoneal disease and distant metastasis.

🎗️ Endometrial FIGO Stage

Derive the FIGO 2023 stage from histologic aggressiveness, anatomic extent and molecular subtype (POLEmut/MMRd/p53abn/NSMP).

🎗️ Vulvar FIGO Stage

Derive the FIGO 2021 vulvar cancer stage from tumour size/invasion depth, local spread, inguinofemoral nodes and fixation/distant disease.

🎗️ GTN Anatomic Stage

FIGO 2000 anatomic staging (I–IV) of gestational trophoblastic neoplasia, expressed together with the prognostic score (e.g. III:7).

🎗️ Sedlis Criteria

After radical surgery for early cervical cancer (nodes/margins/parametria negative), judge adjuvant pelvic radiation from LVSI, stromal invasion depth and tumour size.

🎗️ ASCCP Screening Management

Give the ASCCP 2019 risk-based management direction and clinical action threshold from the current screening result (exact risk needs prior history).

🎗️ Mayo Node Indication

Use the Mayo criteria (histology, grade, myometrial invasion, tumour size) to judge whether an endometrioid adenocarcinoma can be spared lymphadenectomy.

🎗️ Q-M Hysterectomy Type

Standardise radical hysterectomy by lateral parametrial resection extent (A/B/C/D), with resection landmarks and indications.

🎗️ Suidan Score

In advanced ovarian/tubal/peritoneal cancer, use pre-operative CT findings + CA-125 + clinical factors to predict suboptimal primary cytoreduction (residual > 1 cm) risk.

🎗️ Fagotti Score

Seven diagnostic-laparoscopy findings (each 0/2) predict the likelihood of optimal cytoreduction in advanced ovarian cancer; PIV ≥ 8 favours neoadjuvant chemotherapy.

🎗️ ROMA Index

Combine HE4, CA-125 and menopausal status to compute ROMA% and triage an adnexal mass into high/low risk of epithelial ovarian cancer.

🎗️ ECOG/KPS performance status

ECOG (0–5) and Karnofsky (0–100) performance-status correspondence, with the performance threshold for systemic therapy.

0–100 scale grading function and self-care, commonly used in oncology and palliative medicine.

🎗️ TLS Criteria

Determines whether laboratory tumor lysis syndrome (TLS) criteria are met.

Stratifies complication risk in clinically stable solid-tumor patients with febrile neutropenia, identifying those suitable for outpatient/oral antibiotics.

Pediatrics

Rapid assessment of newborn condition at 1 and 5 minutes.

💧 Maint. fluids

Daily and hourly maintenance fluid requirements by weight.

🫘 Schwartz eGFR

Bedside paediatric estimated GFR from height and creatinine.

👶 Corrected age

Adjust chronological age for prematurity.

Differentiate septic arthritis from transient synovitis in a child's hip.

👶 Westley Croup

Grade croup severity in children.

Assess likelihood of appendicitis in children.

Grade respiratory distress in the newborn (0 = no distress).

Assess neonatal respiratory distress severity.

Assess procedural pain in neonates and young infants.

Decision rule for head CT in minor head trauma (GCS 14–15) in children ≤ 18 y, with separate < 2 y and ≥ 2 y pathways.

Brighton PEWS: behaviour/cardiovascular/respiratory each 0–3 (+ continuous nebs and post-op vomiting +2 each) to detect clinical deterioration in children.

🧒 Pediatric GCS

Modified infant/child GCS: eye (4) + verbal (5) + motor (6), total 3–15, to assess level of consciousness.

Five signs (suprasternal retraction, scalene contraction, air entry, wheezing, oxygen saturation) totaling 0–12 to grade pediatric acute asthma severity.

🧒 Pediatric ETT

Estimate pediatric endotracheal tube internal diameter (uncuffed/cuffed) and insertion depth by age (~ 1–10 y; infants by weight).

Estimate neonatal gestational age from neuromuscular and physical maturity subtotals (GA = 24 + 0.4 × total).

🚨 Peds code card

Weight-based PALS emergency drugs and electrical therapy doses (epinephrine/amiodarone/adenosine/atropine/defibrillation/fluids, etc.).

💧 Maintenance fluid

Daily maintenance fluid volume and hourly rate by weight (4-2-1 / 100-50-20 method).

🧒 Pediatric sepsis resuscitation

Gives a fluid-resuscitation strategy and timing of vasoactive drugs/antibiotics for pediatric septic shock by presence of ICU and presence of hypotension (SSC 2020).

🧒 Pediatric DKA fluids

Calculates initial bolus, deficit + maintenance fluid rate, insulin and potassium for DKA by weight and degree of dehydration (ISPAD).

🧒 PALS bradycardia

Gives pediatric bradycardia management by heart rate and perfusion (CPR/epinephrine/atropine) and calculates doses by weight (PALS).

🧒 PALS tachycardia

Gives pediatric tachycardia management by stability and QRS width (cardioversion/adenosine/amiodarone) and calculates doses by weight (PALS).

🧒 Pediatric weight

Estimates a child's weight from age when weighing is not possible (APLS/Luscombe formulas), for dosing and equipment preparation.

🧒 Pediatric dehydration

Estimates the cumulative fluid deficit from clinical dehydration severity to guide a rehydration plan.

Acute appendicitis risk score for children (≥ 4 years), 8 items, 0–10, supporting imaging/surgery decisions.

Computes IV glucose infusion rate (mg/kg/min), especially for neonatal/infant glycemic management.

Pharmacology

💊 Corr. phenytoin

Adjust total phenytoin level for low albumin (Sheiner-Tozer).

Adjusted body weight for drug dosing in obesity.

Estimate lean body mass for dosing and physiology.

💊 Opioid equiv

Convert daily opioid doses between agents via oral morphine equivalents (OME), with an incomplete cross-tolerance reduction range.

💊 Benzo equiv

Convert between benzodiazepines by diazepam equivalents, for switching and tapering (long-acting substitution for short-acting agents).

💉 Vancomycin

Empiric vancomycin loading dose, maintenance dose and interval by weight and creatinine clearance (AUC-guided; requires TDM).

💊 APAP safety

Check acetaminophen daily/single-dose limits and whether an acute ingestion reaches the toxic threshold or warrants NAC.

💉 Aminoglycoside

Gentamicin/tobramycin/amikacin high-dose extended-interval (once-daily) empiric dosing by dosing weight and CrCl; requires TDM.

🫘 Renal adjust

Quick reference for adjusting common renally-cleared drugs by renal function (CrCl/eGFR); not exhaustive — follow the latest product label.

Quick reference to high-risk drug classes, risk factors and management for QT prolongation / torsades (TdP); per-drug authoritative ratings at CredibleMeds.

🤰 Pregnancy meds

The former FDA letter categories (withdrawn 2015), the PLLR labelling rule, prescribing principles and authoritative resources; not a per-drug rating.

🎯 TDM targets

Quick reference to target ranges, sampling timing and toxicity cues for commonly monitored drugs.

🫀 Hepatic adjust

Adjustment and avoidance points for common drugs in hepatic impairment (Child-Pugh), by class; follow the product label.

🔗 DDI key points

Quick reference to mechanisms and typical combinations for high-frequency, dangerous drug interactions; check each pair in a professional interaction database.

🩸 Warfarin INR

Target INR, high-INR/bleeding management (ACCP/CHEST), interactions and missed-dose points.

💉 UFH dosing

Weight-based UFH IV loading dose and initial maintenance rate (Raschke nomogram), aPTT/anti-Xa guided.

🧂 Electrolyte repletion

Dose, route and rate-limit points for repleting potassium/magnesium/calcium/phosphate (sodium & free-water deficits are in the electrolyte/acid-base group).

🌉 Periop bridging

Warfarin bridging, DOAC interruption and resumption, and perioperative antiplatelet handling (CHEST 2022 / ACC / ASRA).

🥗 PN formula

Estimate parenteral nutrition (PN) energy, protein, fluid, lipid and glucose targets by weight and stress state, with refeeding cautions (ASPEN).

💉 Infusion rate

Convert a drug amount, solution volume, weight and ordered dose into an IV pump rate (mL/h).

Sums daily oral opioids into morphine milligram equivalents for medication risk assessment.

💊 Weight Dosing

Converts a mg/kg dose into a single dose with an optional per-dose cap; general/pediatric use.

💊 Steroid Conversion

Converts anti-inflammatory equivalent doses between different glucocorticoids.

Psychiatry

Screen and grade generalised anxiety severity.

Brief screen for problem drinking.

Three-item screen for hazardous drinking.

Bedside screen for delirium.

Grade alcohol withdrawal severity to guide symptom-triggered treatment.

Grade opioid withdrawal severity (Clinical Opiate Withdrawal Scale).

Two-item screen for depression over the last 2 weeks.

Rapid bedside screen for delirium and cognitive impairment, requiring no special training.

Pulmonology

🫁 PE pathway

Use the Wells score for clinical probability of PE, combine with an age-adjusted D-dimer, and return the guideline next step (exclude / order D-dimer / CTPA).

Community-acquired pneumonia severity and 30-day mortality stratification (classes I–V) to aid admission/outpatient decisions. Preferentially recommended by 2019 ATS/IDSA.

🌬️ GOLD ABE

GOLD 2026 stable-COPD assessment group (A/B/E), combining symptoms and exacerbation history to guide initial therapy.

🫁 Gupta postop pulmonary framework

NSQIP-derived Gupta models predicting postoperative respiratory failure (ventilation > 48 h or reintubation) and pneumonia probability: logistic with per-procedure coefficients. This tool is a framework + official link.

Radiology

Score five ultrasound features per ACR TI-RADS (TR1–5) and, with the maximum nodule diameter, return an FNA or follow-up recommendation.

🔍 Pulmonary nodule

Per the Fleischner 2017 guideline, give CT follow-up advice for incidental pulmonary nodules by type, number, size and risk.

Give the malignancy likelihood and standardised management (additional imaging / follow-up / biopsy) for an ACR BI-RADS category.

Compute LR-3/4/5 from at-risk status, size and major features (APHE / washout / capsule / threshold growth) and give management.

Compute PI-RADS 1–5 by zone using the dominant sequence (DWI for PZ, T2 for TZ) and the upgrade rules, with management.

Compute Lung-RADS 2/3/4A/4B from nodule type and size (baseline screen) with follow-up management.

🎀 BI-RADS US structured

Enter 5th-edition US lexicon features and, by the 'most suspicious feature decides the category' rule, suggest a BI-RADS category and management.

Give the malignancy risk and management (follow-up / MRI / gyn-oncology) for an ACR O-RADS US category.

Give the malignancy risk and management (no follow-up / imaging follow-up / surgery) for a Bosniak 2019 category.

📉 RECIST 1.1

Enter the sum of target-lesion diameters (baseline / nadir / current) plus non-target and new-lesion status to derive the target-lesion response (CR/PR/SD/PD) and overall response per RECIST 1.1.

🦴 Spine Grading

Pick a grading system, then read it out: Pfirrmann (disc degeneration I–V), Modic (endplate changes I–III, auto-typed from T1/T2 signal), Meyerding (lumbar spondylolisthesis I–V, auto-graded from percent slip).

🫘 Adrenal Washout

Enter unenhanced, enhanced (portal venous 60–70 s) and 15-min delayed HU to compute absolute (APW) and relative (RPW) percentage washout, with an adenoma read-out at APW ≥60% / RPW ≥40%.

☢️ DLP Effective Dose

Enter the DLP (mGy·cm) from the CT dose report plus scan region and age to estimate effective dose E = DLP × k. For dose communication and QA reference, not individual risk assessment.

🎀 BI-RADS mammo structured

Enter mammography (mammo/DBT/synthetic) findings and, by BI-RADS v2025 (6th edition) 'most suspicious feature decides the category', auto-suggest a BI-RADS level and management.

Give the colonic (C0–C4) and extracolonic (E0–E4) categories and management per C-RADS v2023.

For post-treatment head-and-neck cancer surveillance imaging, give the recurrence suspicion and management by site (primary/neck) and NI-RADS category.

Compute VI-RADS 1–5 from T2 (SC), DWI and DCE scores with the dominant-sequence rule to assess bladder-cancer muscle invasion.

Grade by the most severe luminal stenosis (0–5/N) and the ischaemia and high-risk-plaque modifiers, giving the CAD-RADS 2.0 management direction.

🩻 Vulnerable plaque

Check carotid-plaque high-risk imaging features (IPH, large lipid core, thin/ruptured cap, ulceration, ultrasound hypoechogenicity) to assess vulnerability.

🧠 Small aneurysm (China)

For ≤ 5 mm small aneurysms, assesses rupture risk by morphologic irregularity, aspect ratio (AR), size ratio (SR), and clinical factors, complementing PHASES.

🫁 Pulmonary nodule manager

Enter nodule type/size/scenario/risk/dynamics to get classification, malignancy-probability stratification, follow-up strategy, diagnostic approach, surgical window, and procedure recommendation at once. Integrates Fleischner 2017, Lung-RADS v2022, Chinese consensus 2024, JCOG0802/CALGB140503.

🎀 Breast nodule manager

Enter the BI-RADS category (with molecular subtype and stage when applicable) to get malignancy probability, follow-up/biopsy triage, and after diagnosis the breast-conserving/mastectomy and axillary surgery, plus subtype-based radiotherapy/chemotherapy and systemic therapy principles. Integrates ACR BI-RADS, NCCN/CSCO breast cancer guidelines.

🔷 Prostate nodule manager

Enter PI-RADS, PSA, prostate volume, and DRE (with ISUP grade and stage when applicable) to get PSA density, biopsy/follow-up triage, and after diagnosis the NCCN risk stratification, active-surveillance/surgery, and radiotherapy + ADT/chemotherapy principles. Integrates PI-RADS v2.1, NCCN prostate cancer guideline.

Respiratory

Community-acquired pneumonia severity and disposition.

🫁 A–a gradient

Alveolar–arterial oxygen gradient (room air, sea level by default).

🚬 Pack-years

Cumulative cigarette exposure for screening and risk.

Oxygenation index for ARDS severity (Berlin definition).

Quantify daytime sleepiness across eight everyday situations.

Screen for obstructive sleep apnoea risk.

Classify a pleural effusion as exudate or transudate.

Multidimensional prognosis in COPD.

In-hospital mortality risk in acute COPD exacerbation.

Predict need for intensive respiratory or vasopressor support in CAP.

Grade breathlessness in chronic respiratory disease.

Pneumonia severity without laboratory tests (community setting).

Health-status impact of COPD across 8 items.

Assess asthma control over the past 4 weeks.

🌬️ Asthma GINA steps

Determines the GINA treatment step (1–5) by symptom burden and gives the preferred Track 1 (ICS-formoterol) and alternative Track 2 regimens.

💨 AECOPD management

Uses the three Anthonisen cardinal symptoms and ventilation needs to judge antibiotic indication, and gives steroid, bronchodilator, oxygen, and ventilation direction.

🌡️ CAP triage

Uses CURB-65 and severe-CAP criteria to give outpatient/inpatient/ICU triage and the empiric antimicrobial direction.

😮‍💨 Asthma exacerbation

By exacerbation severity, gives direction for bronchodilators, systemic steroids, oxygen, and escalation/referral.

🫁 PE stratified treatment

Stratifies acute PE by hemodynamics, sPESI/PESI, right-heart function, and troponin, and gives the reperfusion/anticoagulation direction.

🩸 Hemoptysis grading

Hemoptysis severity grading (including massive-hemoptysis recognition) and the emergency management pathway.

🫁 Pneumothorax management

Management decisions for spontaneous pneumothorax (primary/secondary) and tension pneumothorax (BTS 2023).

💧 Light's criteria

Differentiates a pleural effusion as exudate or transudate (any one criterion met means exudate).

🫁 Tidal volume

Calculates the target lung-protective tidal volume by ideal body weight (mechanical ventilation).

🌬️ GOLD 1–4

After COPD diagnosis (post-bronchodilator FEV1/FVC < 0.70), grades airflow-limitation severity by post-bronchodilator FEV1 % predicted.

The Japanese Respiratory Society modification of CURB-65, grading community-acquired pneumonia severity (0–5).

Predicts the need for intensive respiratory or vasopressor support (IRVS) in community-acquired pneumonia; 8 items, 0–11, with age-adjusted respiratory and oxygenation thresholds.

Rheumatology

Disease activity score over 28 joints (ESR-based).

Lab-free, immediately available rheumatoid arthritis disease activity index.

🦶 Gout urate-lowering

Based on serum urate and comorbidities, decide whether to start urate-lowering therapy (ULT) and give the target urate level.

Bath Ankylosing Spondylitis Disease Activity Index; six 0–10 items combined into 0–10, with ≥4 suggesting active disease.

RA disease activity without labs: tender + swollen joint counts plus patient and physician global assessments.

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