Comparative In Vitro Activities of N -Formimidoyl Thienamycin and Moxalactam Against Nonfermentative Aerobic Gram-Negative Rods

Abstract

N-Formimidoyl thienamycin was the most active drug against strains of Pseudomonas aeruginosa with a 90% minimum inhibitory concentration of 1.25 μg/ml. With the exception of P. maltophilia, thienamycin was as active or more active than moxalactam against other species of pseudomonads and against other genera of nonfermenters.