Sonographic assessment of postvoid residual urine volumes in patients with benign prostatic hyperplasia (original) (raw)

Journal of the National Medical Association, 2004

Abstract

To derive a formula that defines the postvoid residual (PVR) urine volume more accurately in patients with prostatic gland enlargement. Prospective. Department of Radiology, University of Ilorin Teaching Hospital, Ilorin. Fifty-two consecutive patients with benign prostatic hyperplasia. The mean age was 64.98+/-9.57 years. PVR urine was evaluated by ultrasonography. Each patient had two examinations, the first of which was with a full bladder and the second of which was immediately after voiding. Two orthogonal diameters were measured on each bladder section (longitudinal and transverse) in the supine position. Fifty-two paired sets of ultrasonic measurements were thus obtained. Catheterized postvoid urine residue was regarded as the gold standard. Using these measurements, an equation--[PVR(CUBIC)=374.057+(-196.94+V1)+(32.5539+V1(2))+(-1.1480+V1(3)) where V1=average of the length (L), width (T), and the anteroposterior distance on transverse section (Dt) of the postvoid urinary bla...

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