Comparison of Mid Catheter Collection and Suprapubic Aspiration of Urine for Diagnosing Bacteriuria Due to Fastidious Micro-organisms

Abstract
Female patients (40) were examined for the presence of fastidious bacteria in the bladder by culture of mid catheter and suprapubic aspiration urine specimens. Gardnerella vaginalis and Ureaplasma urealyticum were the most frequently isolated fastidious species. The suprapubic aspirate was positive in 3 patients with > 105 colony-forming units [CFU]/ml G. vaginalis and in 7 with > 102 CFU/ml U. urealyticum in the mid catheter urine specimen, while it was negative for bacteria in 6 patients with < 104 CFU/ml coryneform bacilli or lactobacilli in the mid catheter urine specimen. Culture of mid catheter urine samples provides a reasonable guide to the presence of bacteriuria owing to fastidious microorganisms and can be used when a suprapubic aspiration specimen cannot be easily obtained.