Pyelonephritis: A Retrospective Analysis of 190 Cases

Objective: In this study, we aimed to present the epidemiological, clinical and microbiological features of community acquired/onset pyelonephritis cases followed in our clinic. Methods: One hundred ninety adult patients with pyelonephritis followed in our clinic between 1989-2008 were analysed retrospectively. Results: Of the patients, 75 were male (39.5%) and 115 were female (60.5%) and mean age was 55.5 years (18-93). In total, 55 of the patients had had urinary tract infections within the last year. Complicated urinary tract infection was diagnosed in 137 patients. Escherichia coli was isolated in the urine culture of 119 (62.6%) patients and extended spectrum-beta-lactamase production was positive in 20% of the isolates. Blood culture was also positive in 44 (23.1%) patients. Nine patients (4.7%) died. Conclusions: The local epidemiology and antibiotic susceptibility results are very important for appropriate empiric antibiotic treatment of pyelonephritis. The upper urinary system ultrasonography should be carried out especially in female patients with pyelonephritis to diagnose complicated urinary tract infections.