Diagnosis of voiding dysfunction by pressure-flow study in women

Figure 2 Bladder output relations relating active detrusor pressure to rate of urine flow at a given bladder volume. Curves show Bladder output relations for the same two situations as in Figure 1, corresponding to a full bladder (curve with higher maximum possible flow rate) and a nearly empty bladder (lower maximum possible flow rate; volume approximately 12.5% of capacity). (From Griffiths[8]. Assessment of detrusor contraction strength or contractility. Neurourol Urodyn 1991; 10: 1; with permission).