168.2 📚 國考版

168.2.0.1 必背 — Klebsiella hvKp

• K1/K2 capsule, hypermucoviscous, string test +
• Taiwan/Asia endemic, 糖尿病 strong link
• Pyogenic liver abscess + endophthalmitis + meningitis
• Treatment: drainage + ceftriaxone/ertapenem × 6+ wk

168.2.0.2 必背 — Klebsiella oxytoca AAHC

• Antibiotic-associated hemorrhagic colitis (β-lactam exposure)
• 不是 C. diff
• 停 abx + supportive

168.2.0.3 必背 — Enterobacter AmpC

• Chromosomal inducible
• Cefepime / carbapenem (avoid ceftriaxone mono)
• 10-30% emergence on 3rd-gen ceph therapy

168.2.0.4 必背 — Citrobacter koseri neonatal

• Neonatal meningitis + brain abscess
• Distinct from C. freundii (AmpC pattern)

168.2.0.5 必背 — Serratia marcescens

• Red pigment (prodigiosin)
• Nosocomial outbreaks
• IVDU IE
• Cefepime / carbapenem

168.2.0.6 必背 — Cronobacter

• Powdered formula contamination
• Neonatal sepsis + meningitis

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