Correlation between Chronic Urinary Retention, Retained Urine Volume, and Renal Function in Men with Urinary...

Urinary retention (UR) can lead to both anatomical and functional derangement in the urinary system. Chronic kidney disease occurs when there is renal damage.

This study aims to determine the relationship between chronic UR (CUR), retained urine volume, and renal function among men with chronic and acute-on-chronic UR.

The study was a hospital-based prospective study of Nigerian men presenting with chronic or acute-on-chronic UR. Diagnosis of UR was made based on history and physical examination. The estimated glomerular filtration rate (eGFR) was calculated using the serum creatinine level. Retained urine volume was measured after an aseptic urethral catheterization. Spearman's rank correlation test was used for correlation analysis between CUR, retained urine volume, and renal function. A P value of < 0.05 was accepted as statistically significant.

Fifty-six men met the inclusion criteria. Most of the patients were in the age range of 80-89 years. A total of 20 (35.7%) had acute-on-chronic UR, while 36 (64.3%) had CUR. The mean retained urine volume was 1500 ± 748.0 mL and 1100 ± 515.0 mL for the chronic and acute-on-chronic UR groups, respectively. Obstructive nephropathy occurred in 88.6% of the participants with CUR. There was a significant negative relationship between the eGFR and the volume of retained urine (r = -0.397, P = 0.002).

A high prevalence of obstructive nephropathy was observed among men with chronic and acute-on-chronic UR in this study.