Department of Urology, Faculty of Medicine, Suez Canal University, Ring Road, Ismailia 41115, Egypt.

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The purpose of the present study was to determine whether sitting or standing positions had an effect on voiding in patients with bladder outflow obstruction due to benign prostatic hyperplasia.

The authors studied 100 male patients over the age of 45 years with benign prostatic hyperplasia. All underwent uroflowmetry and prevoiding and postvoiding estimation of the residual urine in standing and sitting positions. Patient group 1 had uroflowmetry maximum flow rate (Qmax) ? 10 mL/sec.; Group 2 had Qmax 10-15 mL/s. All parameters of uroflowmetry (eg, Qmax, average flow rate, time to maximum flow, and postvoiding residual) were compared for both groups in both positions.

Comparison of all parameters of uroflowmetry and postvoiding residual showed statistically significant differences in favor of sitting more than standing. This result was found for all patients and all variables except one: there was no statistically significant difference in the time to maximum flow in sitting and standing positions for patients in group 2.

Voiding in the sitting position in patients with benign prostatic hyperplasia is preferred due to a decrease in obstructive parameters shown by uroflowmetry and postvoiding residual urine volume. As a result, fewer complications such as UTI and bladder stone formation are expected.

Written by:
Salem TA, Abbas HH, Ali MH, Al Robigi A.   Are you the author?

Reference:
UroToday Int J. 2009 Jun;2(3).
doi:10.3834/uij.1944-5784.2009.06.07

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