Biomedical subjects

D W Webb

Publications and source records attributed to D W Webb.

43 records · Page 3Linked to original sources

PubMed1980

Antimicrobial synergism of piperacillin and gentamicin against pseudomonas aeruginosa, Staphylococcus aureus and Streptococcus faecalis.

The potential synergistic effect of piperacillin with gentamicin was examined against five isolates each of Pseudomonas aeruginosa, Staphylococcus aureus and Streptococcus faecalis isolated from patients with endocarditis. Piperacillin and gentamicin synergistically inhibited all strains of P. aeruginosa and S. aureus tested. They exerted no synergistic effect against S. faecalis. Piperacillin and gentamicin synergism may be clinically tested in the treatment of serious pseudomonas and staphylococcal infections but not against infections caused by S. faecalis.

Drug Synergism↗

PubMed1979

Antimicrobial activity of antituberculosis agents against anaerobic bacteria.

Anaerobic infections may coexist with tuberculosis, and can be mistaken for one another. The effect of therapy with antituberculosis chemotherapeutic agents against anaerobic bacteria (with the exception of rifampin) is unknown. We therefore examined the in vitro efficacy of certain commonly used antituberculosis agents (rifampin, isoniazid, and ethambutol) against 370 strains of anaerobic bacteria, including 86 isolates of Bacteroides fragilis. Rifampin at a concentration of 2 microgram/ml inhibited 91 percent of all anaerobic isolates. Both ethambutol and isoniazid were totally ineffective against any of the anaerobes tested, even at 64 microgram/ml. Therapy with rifampin in an unsuspected anaerobic infection can be misdiagnosed for tuberculosis. Therefore, when tuberculosis is suspected, isoniazid and ethambutol can be used and rifampin withheld until the acid-fast bacilli are demonstrated by additional diagnostic procedures, such as transtracheal aspiration.

Actinomyces↗

PubMed1979

Hemoptysis in patients with septic pulmonary infarcts from tricuspid endocarditis.

Three drug addicts with tricuspid valve endocarditis and pulmonary cavitation secondary to septic pulmonary infarcts developed massive hemoptysis. Two patients died of asphyxia and one survived. Both who died were improving clinically and had negative blood cultures when the fatal hemoptysis occurred. Therefore, however slight it may be, hemoptysis occurring in association with septic pulmonary infarcts associated with endocarditis may require prompt and aggressive measures.

Adult↗

PubMed1979