Aztreonam plus clindamycin as therapy for pelvic infections in women.

Aztreonam, a new monobactam antibiotic with specific gram-negative aerobic activity, was used in combination with clindamycin in the treatment of 40 women with pelvic infection, including post-partum endometritis, pelvic inflammatory disease, and post-hysterectomy pelvic cellulitis. Clinical cure was achieved in 87 percent of patients. Failure was related to the limited gram-positive aerobic spectrum of clindamycin. All aerobic gram-negative enteric organisms were sensitive in vitro to less than 0.125 microgram/ml of aztreonam.