Uroflowmetry pattern in detrusor underactivity and bladder outlet obstruction in male patients with lower urinary tract symptoms

Autor:	Hiroko Banjo, Noriyuki Abe, Hidehiro Kakizaki, Kotona Miyauchi, Masafumi Kita, Masaki Watanabe, Naoki Wada, Mayumi Ishikawa, Keigo Takeuchi
Rok vydání:	2021
Předmět:	Male medicine.medical_specialty Urology 030232 urology & nephrology 03 medical and health sciences Bladder outlet obstruction 0302 clinical medicine Lower Urinary Tract Symptoms Lower urinary tract symptoms Urinary Bladder Underactive medicine Humans In patient Retrospective Studies 030219 obstetrics & reproductive medicine business.industry Area under the curve medicine.disease Voiding time Urinary Bladder Neck Obstruction Urodynamics Neurology Male patient Bladder contractility business
Zdroj:	LUTS: Lower Urinary Tract Symptoms. 13:361-365
ISSN:	1757-5672 1757-5664
DOI:	10.1111/luts.12377
Popis:	Objectives To investigate if uroflowmetry (UFM) curve patterns could differentiate between detrusor underactivity (DU) and bladder outlet obstruction (BOO). Methods A hundred consecutive data sets of male patients who were evaluated using UFM and invasive urodynamics (pressure flow study) were retrospectively collected. DU and BOO were diagnosed according to the bladder contractility index and BOO index. The UFM curve with two or more notches was defined as sawtooth pattern, and the interrupted pattern was defined if several curves with interruptions reducing to zero were noted. We also compared other UFM parameters including maximum and average flow rates (Qmax and Qave), voiding time, time to Qmax, the slope to first peak flow, the number of notches on the curve (sawtooth pattern), the number of curves (interrupted pattern), and the maximum drop on the sawtooth pattern. Results Twenty-five and forty-nine patients were categorized in the BOO group and the DU group, respectively. The incidence of sawtooth pattern was significantly higher in the DU group (57%) than in the BOO group (32%), while the incidence of interrupted pattern was not different between the two groups (36% in the BOO group and 49% in the DU group). There were significant differences in age (area under the curve = 0.75), prostatic volume (0.67), the slope to first peak flow (0.58), the number of notches on the curve (0.61), and the maximum drop (0.76) between the two groups. Conclusions The sawtooth UFM pattern is more common in patients with DU than in those with BOO. New parameters on UFM curve patterns could be helpful to evaluate DU and BOO without invasive urodynamics.
Databáze:	OpenAIRE
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