The bacteria, apart from bacteroides, are nearly all penicillin sensitive and crystalline penicillin with metronidazole are the antibiotics of choice initially until sensitivities are known.

• 除类杆菌感染以外，吸入的细菌差不多都对青霉素敏感，在获悉细菌药敏试验报告之前，可先选用青霉素及灭滴灵治疗。