Comparison of three methods to analyze detrusor contraction during micturition in men over 50 years of age (original) (raw)

2017, Neurourology and urodynamics

To grade detrusor voiding contraction three parameters are used: the Schäfer pressure-flow nomogram (LinPURR), the bladder contractility index (BCI) and the maximum Watt factor (Wmax ). Because these methods to quantify detrusor contraction and/or to diagnose detrusor underactivity (DU) have not yet been mutually compared, this study compares these three methods of grading detrusor contraction. Evaluated were 1420 urodynamic pressure-flow studies from 1222 men (aged >50 years) with lower urinary tract symptoms (LUTS). Excluded were patients with abnormal urinalysis, neurological disorders, surgical correction of congenital anomalies, pelvic surgery, post radical prostatectomy, or with evidence of urethral stricture. Contractility was graded with the LinPURR, the BCI, and Wmax, making a distinction between "strong," "normal," "weak," and "very weak" contractility. We calculated agreement between LinPURR and both BCI and Wmax . The contractil...

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