The Effect of Voiding in Sitting and Standing Positions on Uroflowmeter Parameters: Descriptive Research

Objective: Uroflowmetry is one of the most commonly used assessment tools in patients with lower urinary tract symptoms (LUTS). However, uroflowmetric parameters can be affected by various factors. In this study, we aimed to examine the effects of different voiding positions on uroflowmeter parameters. Material and Methods: 105 patients aged 40-80 years who applied to the urology outpatient clinic with the complaint of LUTS were included in the Our Prospective study. Uroflowmetry measurements were performed on each of the participants in standing and sitting positions, one day apart. After uroflowmetry, residual urine was measured by transab- dominal ultrasound in each patient. Qmax, Qave, voiding volume, voiding time and residual urine volumes of the patients in standing and sitting positions were compared. Results: The mean Qmax-Qave-voiding volume values of the patients were measured as 13. 8 mL/s-7 mL/s-336 mL in the sitting position and 11. 6 mL/s-6 mL/s-304 mL in the standing position respectivly. Q max, Qave values and voiding volume values were significantly higher in patients who voided in the sitting position (p<0.001). The residual urine amount of the patients after voiding was measured as 20 mL in the sitting position and 40 mL in the standing position, and it was observed that the amount of residual urine in the patients who voided while sitting position was significantly less (p<0.001). Conclusion: In our study, it was observed that voiding position had an effect on uroflowmetry parameters. Urinating, especially in a sitting position, has a positive effect on uroflowmetry parameters.