Assessment of maximal urinary flow rate (Qmax) of urethral stricture patients three weeks post internal urethrotomy Sachse in Dr. Sardjito General Hospital Yogyakarta

Abstract

Urethral stricture is a common urologic problem in developing countries including Indonesia due
to its high prevalence. Internal urethrotomy is still the gold standard to return patients to a state
of normal voiding. To evaluate the outcome of the internal urethrotomy, uroflowmetry assessment
can be conducted with its principal variable of maximal urinary flow rate (Qmax). Since 1985, in
Dr. Sardjito General Hospital Yogyakarta, the internal urethrotomy has been used as the main
treatment modality to manage the urethral stricture. However, its outcome has not been
evaluated. The aim of this study was to evaluate Qmax of urethral stricture patients post
internal urethrotomy Sachse in Dr. Sardjito General Hospital. This was a cross-sectional study
performed starting from November 2009 to April 2010. The Qmax was assessed using the
uroflowmeter three weeks after internal urethrotomy. The length and the locations of the patients’
stricture, as well as its correlation with Qmax were also measured and evaluated. Among 24
patients selected, 13 patients who fulfilled the inclusion and exclusion criteria were involved in
this study. The mean of the Qmax of patients was 22.3±6.7 mL/s.The mean of Qmax of
patients who had the length of urethral stricture of d” 2 cm (14.8±3.8 mL/s) was significantly
higher than patients who had length of à 2 cm (6.4±2.6 mL/s) (p=0.03), whereas patients who
had the location of urethral stricture on anterior (12.4±5.4 mL/s) were not significantly different
compared to patients who had those on posterior (8.5±4.9 mL/s) (p=0.398). In conclusion, the
majority of patients returned to a state of normal urinary tract function post internal urethrotomy.
The Qmax of urethral stricture patients after internal urethrotomy are influenced by the length
of the stricture but not by its location.

Keywords: urethral stricture - urethrography - Sachse - uroflowmetry - Qmax