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Subject Area

Urology

Article Type

Original Study

Abstract

Background Urinary retention is often the result of bladder outlet obstruction secondary to benign prostatic hyperplasia. Benign prostate enlargement with aging causes partial bladder outlet obstruction, a situation known as benign prostatic obstruction. For such patients, prostate surgery, such as transurethral resection of the prostate (TURP), has a good chance of improving lower urinary tract symptoms. Objective To evaluate the recoverability of detrusor muscle function in patients with benign prostate enlargement after treatment with TURP. Patients and methods The study was carried out on 34 patients at the Urology Department of Faculty of Medicine, Menoufia University, from July 2019 to October 2021. These patients had postvoiding residual urine more than 150 ml, had weak detrusor contractility [low bladder contractility index (BCI)<100)], and were scheduled for TURP. Results A total of 34 patients underwent evaluation using ultrasound and urodynamics studies preoperatively and postoperatively, but six patients missed evaluation by urodynamics postoperatively. The preoperative median postvoid residual urine was 175 (range, 153–600 ml), which reduced postoperatively to a median of 37.5 ml, with a range of 18–230 ml. BCI ranged between 35 and 98.5, with a median of 74. A total of 28 (100%) patients showed weak detrusor contractility (low BCI <100). Postoperative BCI ranged between 76 and 167, with a median of 136. A total of eight (28.6%) patients still showed weak detrusor contractility (low BCI <100), 15 (53.6%) patients showed normal detrusor contractility (normal BCI 100–150), and five (17.9%) patients showed strong detrusor contractility (high BCI >150). Conclusion Detrusor function can be recovered after TURP in patients with benign prostatic hyperplasia with detrusor underactivity.

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