“…[558][559][560][561] One such study of patients undergoing craniotomy, spinal, or shunting procedures was stopped early because of an excessive number of SSIs in the placebo group. 562 Choice of agent. Studies of clean neurosurgical procedures reported antimicrobial regimens including clindamycin, 540,543,557 vancomycin, 542,557 cefotiam (not marketed in the United States), 557 piperacillin, 557 cloxacillin, 540,543,557 oxacillin, 542,557 cefuroxime, 547 cefotaxime, 548 sulfamethoxazole-trimethoprim, 548 cefazolin, 542,544 penicillin G, 542 and amoxicillin-clavulanate.…”