175.2 📚 國考版

175.2.0.1 必背 — 鑑別 PsA

• Gram - rod, non-lactose, oxidase +
• Pyocyanin (blue-green), grape odor
• Water + biofilm habitat

175.2.0.2 必背 — 高 risk 族群

• CF, burn, neutropenic, HIV, catheter / device, DM, ICU

175.2.0.3 必背 — Distinct Syndromes

• Ecthyma gangrenosum (neutropenic sepsis) — necrotic ulcer + eschar
• Hot tub folliculitis (self-limit)
• Malignant otitis externa (DM elderly, 6-8 wk IV abx)
• Contact lens keratitis (emergency)
• IVDU TV endocarditis
• Sneaker stab → calcaneus osteo

175.2.0.4 必背 — Empirical PsA Cover

• Pip-tazo, cefepime, ceftazidime, carbapenem (NOT ertapenem), aztreonam
• • aminoglycoside (severe sepsis)
• • FQ (cipro, levo) if S

175.2.0.5 必背 — Newer Anti-MDR PsA

• Ceftolozane-tazo, CAZ-AVI, imi-rele, cefiderocol
• Colistin last resort

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