Patient Position and Invasive Urodynamic Study Results in Males

Invasive Urodynamic Study (Filling cystometry and pressure-flow study) Under sterile conditions and at lithotomy position, an urethral and a rectal catheter will be inserted. Bladder will be filled by sterile saline slowly. The first feeling of urine, the first sensation of urination and the sensation of severe desire to urinate will be recorded step by step. Vesical, rectal and detrusor pressures will be monitorized during these period. After the strong desire to void sensation, filling cystometry phase will be completed. Sterile saline infusion is stopped. While the patient urinates the vesical, detrusor and rectal pressures, the maximum and average urine flow rates will be recorded.