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Selection of antibiotics for treatment and prophylaxis of staphylococcal infections in cystic fibrosis patients.

Susceptibility in vitro of 179 staphylococcal strains from 107 cystic fibrosis patients against 31 antibiotics indicates that only teicoplanin, vancomycin and netilmicin were active against all strains. The use of betalactam antibiotics is impaired by 11.7% of methicillin-resistant strains. The bactericidal kinetics of cephalexin and flucloxacillin as determined in a pharmacodynamic model demonstrates the killing of strains resistant to cephalexin (MIC 8 mg/l to 32 mg/l) by flucloxacillin. For the rational selection of antistaphylococcal antibiotics for cystic fibrosis patients, both the MIC of the isolates and the concentration of the antibiotics in cystic fibrosis patients have to be considered.

Adolescent↗
PubMed1990

Increasing frequency of staphylococcal infective endocarditis. Experience at a university hospital, 1981 through 1988.

To determine the characteristics of infective endocarditis in our hospital, we reviewed all patients with that diagnosis at the University of Massachusetts Medical Center, Worcester, between 1981 and 1988. Of 113 patients with infective endocarditis, 56 (50%) had staphylococcal endocarditis. Despite aggressive medical and surgical therapy, in-hospital mortality was 25%. Forty-five (80%) of the 56 cases of staphylococcal endocarditis involved Staphylococcus aureus with a mortality of 28% vs 9% in the non-S aureus group. Mortality was higher in patients with congestive heart failure (35%), atrioventricular block (45%), atrial fibrillation (42%), and prosthetic valve endocarditis (50%). Seventy-six percent of the patients with congestive heart failure required surgery. Patients with congestive heart failure and S aureus infection had a mortality of 45%. Thirty-six patients (64%) were alive at late follow-up (mean, 28.6 months). Mortality was highest (23%) during the first 3 months following diagnosis of staphylococcal endocarditis. Staphylococcal endocarditis represents an increasingly large proportion of patients with infectious endocarditis. Mortality rates remain high despite aggressive management of the patient's condition.

Adolescent↗