Acute Transfusion Reaction — Management Pathway

Step-by-step decision

Choose step by step as prompted; reaching an endpoint gives the management recommendation. You can go back a step or restart anytime.

🎓 Want to practice? Do a case challenge with this pathway → (get a case, choose management step by step, scored).

Full pathway

1. [Decision] Stop + verify; main presentation
   First stop + verify — what is the main presentation? (For all suspected reactions, step one: stop the transfusion immediately, keep the line open with normal saline, verify identity/blood bag, notify the blood bank and return the bag for testing (recheck type/cross-match/DAT). Then triage by presentation: fever ± hemolysis / respiratory distress / fever or rash only.)
   • Fever + hemolysis/hypotension/hemoglobinuria/DIC → Acute hemolytic transfusion reaction (AHTR)
   • Respiratory distress (new after stopping) → Respiratory distress · TRALI vs TACO
   • Fever-chills only or rash only → Fever/rash only · FNHTR/mild allergy
2. [End] Fever/rash only · FNHTR/mild allergy
   Fever-chills only (FNHTR, a diagnosis of exclusion) → antipyretics, exclude hemolysis/sepsis, use leukoreduced products in future; urticaria only without fever/hypotension (mild allergy) → antihistamine, may cautiously resume if mild and resolved. Septic (high fever/chills/shock, especially platelets) → blood cultures (patient + bag) + broad-spectrum antibiotics.
3. [End] Respiratory distress · TRALI vs TACO
   New respiratory distress after stopping — differentiate: TRALI (<6 h hypoxemia + bilateral non-cardiogenic edema, donor anti-leukocyte antibodies → respiratory/ventilatory support, diuretics ineffective) and TACO (volume overload, hypertension, cardiogenic edema, JVD → diuresis, oxygen, upright position, slow the transfusion); anaphylactic shock (hypotension + bronchospasm/angioedema) → epinephrine + airway. Stop the transfusion, oxygen, mechanical ventilation if needed, ICU.
4. [End] Acute hemolytic transfusion reaction (AHTR)
   Acute hemolytic reaction (usually ABO incompatibility/clerical error): immediately stop the transfusion, flush the line with normal saline, verify, send to the blood bank (DAT/repeat cross-match). Aggressive IV fluids to maintain urine output and support blood pressure; monitor/manage DIC and renal failure; for hemoglobinuria, alkalinize/diurese as appropriate; ICU support. Can be life-threatening and needs immediate recognition.

Source guidelines & references

• Classification and management of transfusion reactions (StatPearls; AABB)

This pathway is our own synthesis of the decision logic in the guidelines above (not the guideline verbatim); thresholds and workflows change as guidelines update — in practice follow the latest guideline, your institution's protocol and the individual patient.

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