Urinary incontinence in elderly women: urodynamic evaluation.

The objective of this study is to characterize urinary incontinence observed in elderly women and to assess the importance of various parameters used to evaluate urinary incontinence. Two hundred consecutive, ambulatory, outpatient, incontinent women 55 years of age and over who were seen at the Continence Program Clinic and completed a medical and urodynamic protocol are included in this paper. After a thorough medical history and a complete physical examination, urodynamic tests were performed. The urodynamic results showed that 77% of incontinent women had an incompetent urethra. Twenty-five percent had a hyperactive bladder, 8% had "other" types, and 7% had a normal study. Comparison of the clinical diagnosis with the actual urodynamic diagnosis for stress incontinence revealed a 78% accuracy and only a 6% false negative. In contrast, a similar comparison for urge incontinence found only 44% accurate and 45% false negative. Analysis of the urodynamic tests revealed that the simple provocative full-bladder stress test was as effective as the radiographic or electronic pressure measurement in detecting incompetent urethra producing stress urinary incontinence. Provocative upright cystometry was helpful in uncovering 33% of hyperactive bladders not provoked in the supine position. Complex urodynamic tests should be reserved for unexplained incontinence or when symptomatology is complex.