Abstract
An open, comparative, randomized study was performed in two medical intensive care units to compare the efficacy of the combination of aztreonam and either cloxacillin or oxacillin [(cl)oxacillin] with that of the combination of tobramycin and a cephalosporin. Of the 92 patients who were included in the study, 76 were evaluable. All patients suffered from severe, mostly pulmonary, infections and received ventilatory support. The aztreonam combination yielded an 80% rate of clinical cure; mortality was 15%. Use of the aminoglycoside combination resulted in a 51% rate of clinical cure; mortality was 23%. The difference in cure rate between the two combinations was statistically significant. Adverse effects were negligible in patients who received the aztreonam combination, and superinfection was seen in only 2%. Of the patients who received the aminoglycoside combination, 20% developed a superinfection and 11% developed a new renal insufficiency. Therefore, the combination of aztreonam and (cl)oxacillin is a valuable alternative to the combination of an aminoglycoside and a cephalosporin.
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