🦠 Antibiotic Class Spectrum Quick Reference
Textbook-level overview of the antibacterial spectrum of common antibiotic classes — penicillins, cephalosporins, carbapenems, fluoroquinolones, glycopeptides and more. Browser-side.
Factor in local susceptibility data (e.g. China's CHINET).
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When to use
Clarify which organisms each class covers and misses. Empiric choice still needs local susceptibility, infection site and institutional protocol.
How it works
Coverage overview per class (Gram-positive/negative, anaerobes, atypicals, MRSA, Pseudomonas) — not a syndrome-specific regimen.
Key points
- Factor in local susceptibility data (e.g. China's CHINET).
- Consider infection site and tissue penetration.
- De-escalate by susceptibility as soon as results allow.
- This tool is educational, not an individualised prescription.
References
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Drug class | Penicillin G/V |
|---|
→SpectrumPenicillin G/V
- Covers：Streptococci, S. pneumoniae (susceptible), N. meningitidis, T. pallidum, oral anaerobes
- Misses：Penicillinase-producing staphylococci, most Gram-negative Enterobacterales
| Drug class | Polymyxin |
|---|
→SpectrumPolymyxin (colistin)
- Covers：Resistant Gram-negative (Pseudomonas/Acinetobacter/CRE)
- Note：No Gram-positive/anaerobe activity; nephrotoxicity, needs dose optimisation
Frequently asked questions
- What is Antibiotic Class Spectrum Quick Reference?
- Textbook-level overview of the antibacterial spectrum of common antibiotic classes — penicillins, cephalosporins, carbapenems, fluoroquinolones, glycopeptides and more. Browser-side.
- How is Antibiotic Class Spectrum Quick Reference calculated? What is the core formula?
- Coverage overview per class (Gram-positive/negative, anaerobes, atypicals, MRSA, Pseudomonas) — not a syndrome-specific regimen.
- When is Antibiotic Class Spectrum Quick Reference used?
- Clarify which organisms each class covers and misses. Empiric choice still needs local susceptibility, infection site and institutional protocol.
- What are the key clinical points for Antibiotic Class Spectrum Quick Reference?
- Factor in local susceptibility data (e.g. China's CHINET). Consider infection site and tissue penetration. De-escalate by susceptibility as soon as results allow. This tool is educational, not an individualised prescription.
- What are the limits and cautions when using Antibiotic Class Spectrum Quick Reference?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is Antibiotic Class Spectrum Quick Reference calculated in practice? Can you show a worked example?
- Inputs: Drug class Penicillin G/V → Result: Spectrum Penicillin G/V（Covers: Streptococci, S. pneumoniae (susceptible), N. meningitidis, T. pallidum, oral anaerobes, Misses: Penicillinase-producing staphylococci, most Gram-negative Enterobacterales） Inputs: Drug class Polymyxin → Result: Spectrum Polymyxin (colistin)（Covers: Resistant Gram-negative (Pseudomonas/Acinetobacter/CRE), Note: No Gram-positive/anaerobe activity; nephrotoxicity, needs dose optimisation）