Bacteremia in Diabetic Patients with Infected Lower Extremities

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Abstract
Eleven cases of bacteremia in diabetic patients with infected lower extremities at Rancho Los Amigos Hospital (RLAH) were observed over a 34-mo period. The yearly incidence was 0.6% of admissions to the Ortho-Diabetes service. Aerobic bacteria were recovered in six cases and anaerobic bacteria in five. Bacteroides fragilis was isolated four times, Staphylococcus aureus three times, and nonfragilis Bacteroides sp., Escherichia coli, group B streptococcus, and viridans streptococcus were each seen once. Ten of the 11 patients were febrile at the time of bacteremia. Clinical, laboratory, radiologic, and ultrasonographic parameters were comparable in patients with aerobic and anaerobic bacteremia, and between bacteremi patients and nonbacteremic controls. Fever, however, was significantly more frequent in bacteremic patients. Foul-smelling lesions were seen in two of the five patients with anaerobic bacteremia, and in none of the patients with aerobic bacteremia. Postoperative B. fragilis bacteremia was observed to be transient and resolved without definitive therapy in one patient. Appropriate antibiotic therapy in 10 patients together with surgical intervention in eight cases resulted in resolution of the infection in the remaining patients.

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