PubMed · 5790264
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
1969-07-12. Symptomless bacteriuria.. https://pubmed.ncbi.nlm.nih.gov/5790264/
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
OBJECTIVE: To assess the factors influencing urinary nitrosamine production in patients with enterocystoplasties. PATIENTS, SUBJECTS AND METHODS: The study comprised 100 patients with an enterocystoplasty, 20 patients with interstitial cystitis, 30 with infective cystitis and 120 control subjects drawn from hospital staff and out-patients. Urinary nitrosamine levels were measured and the urine samples cultured for microorganisms. RESULTS: Nitrosamine levels were significantly higher only in patients with enterocystoplasties who also had higher urinary white cell counts or significant bacteriuria. CONCLUSION: Patients with an enterocystoplasty and significant bacteriuria are most at risk from potential nitrosamine-induced epithelial injury.
This prospective study was carried out to establish the risk of postoperative asymptomatic bacteriuria developing into a symptomatic urinary tract infection if left untreated. Among 454 women who underwent routine gynaecological surgery using transurethral catheters for a mean of 1.4 days, 243 (53.5%) had postoperative bacteriuria and 74 (16.3%) developed urinary tract infection. Positive urine cultures showed a low predictive value for infection, even when combined with the presence of pyuria. Among 174 women discharged with asymptomatic bacteriuria, 36 (20.7%) developed urinary tract infection, of which all but two were caused by Gram-negative organisms or enterococci. A set of recommendations for handling postoperative bacteriuria is proposed.
To evaluate the commercially available polymerase chain reaction (PCR) assay Amplicor (Roche Molecular Systems, USA) for diagnosis of Chlamydia trachomatis infection, urethral and urine swabs from a total of 344 male patients were tested and the results compared with those obtained by the nonisotopic hybridization assay Pace 2 (Gen Probe, USA) for urethral samples and by the enzyme immunoassay EIA MicroTrak (Syva, USA) for urine. Discrepant results were analyzed by a repeated test run using a major outer membrane protein-derived primer PCR, by the probe competition assay, and by the direct immunofluorescence test (DIF). Thirty-nine men (11.3%) were chlamydia positive, based on the results of all tests from both sampling sites. The rate of detection of chlamydia in urethral specimens by Amplicor and the Pace 2 was 79.5% and 61.5%, respectively, while the rate of detection in urine sediment was 75% for both Amplicor and EIA. In the first run of the PCR, a high number of false-negative results for unfrozen samples was observed, decreasing the sensitivity of Amplicor in urine to 47.3%. The results of the study indicate that Amplicor detects more infected individuals compared with other tests and is suitable as an alternative diagnostic test for chlamydia infections, using not only urethral specimens but also urine specimens. However, the finding of false-negative results when using Amplicor on unfrozen samples must be further investigated.