Uroflowmetry is a noninvasive measurement of excreted urine volume over time. It allows measurement of voided volume, voiding time, average flow rate (Qavg), and maximum flow rate (Qmax), as well as abnormal flow patterns.

Uroflowmetry is a simple noninvasive test to assess lower urinary tract function, by measuring the flow of urine over time. The results of this test are useful in predicting bladder outflow obstruction and assessing the need for more advanced urodynamic testing.

A total of 67 men (Korean or American) participated in the trial. Mean age was 41.6 years old (24 – 56 years old). Out of the 67 users, 9 measured not once after installation and registration, so they were screened out.

A total of 97 patients including 60 males and 37 females were analyzed. Mean age was 59.8, 59.9 years for men and women respectively. Urination sounds differently by gender, perhaps due to differences in their anatomy of pelvis/lower urinary tract and posture during urination

Standard uroflowmetry is inconvenient for patients because the measurement environment is unfamiliar and unnatural, demanding a timed voiding for the test. A novel acoustic uroflowmetry is based on sound analysis using a smartphone application without any additional device, and can be used at home without cumbersome settings.

After excluding 898 cases with voided volume less than 150 ml, 1574 cases (male 1031, female 543) were finally included. The male results were labeled as normal in 521 cases (50.5%) and abnormal in 232 cases (22.4%), with unanimous read rates in 51.4%.