Micro & Immunology · single question
A patient's antibiotic for a dental abscess did not resolve the infection. Most appropriate next step?
Show answer and explanation
Correct answer: B. Culture and sensitivity testing
Culture and sensitivity testing identifies the causative organism and effective antibiotics when initial treatment fails.
- A. ❌ Empiric switching may not resolve the infection if an unusual resistant organism is present.
- B. ✅ CORRECT – C&S testing identifies the organism and susceptibility for targeted treatment.
- C. ❌ Extraction may be needed eventually but C&S testing should guide the approach.
- D. ❌ Higher dosing without identifying organism may be ineffective if bacteria are resistant.
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