Urodynamic studies of the lower urinary tract. II. Voiding intravesical pressure in prostatic hypertrophy and urethral stricture

摘要

The bladder was punctured suprapubic ally and a small polyethylene tube was introduced. The intravesical pressure on voiding was measured with strain gauge manometer. Uroflometry was simultaneously performed. 1) Voiding intravesical pressure was measured in 15 normal males, 17 patients with prostatic hypertrophy, 10 cases after prostatectomy, and 7 cases after dilatation for urethral stricture. 2) The intravesical pressure curves in both prostatic hypertrophy and urethral stricture showed prolonged voiding time and high pressure. The difference was that in the former the curves showed remarkable fluctuation and in the latter they were rather regular and flat. 3) Voiding intravesical pressure was remarkably lowered after prostatectomy reaching the normal detrusor pressure in three to four weeks. 4) After dilation for urethral stricture, the maximum voiding pressure was lowered but the detrusor pressure was still high. 5) With measurement of voiding intravesical pressure, the potential emptying ability of the bladder detrusor muscle could be demonstrated.