Table 2. Micturition pressure-flow study parameters with placebo or lidocaine.
Intraurethral 4% lidocaine did not change voiding efficiency or other micturition pressure-flow study variables. EMG, electromyography; Pabd, abdominal pressure; Pdet@Qmax, detrusor pressure at maximum flow rate; PVR, post void residual. Data are presented as mean ± standard deviation, median (25%, 75% quartile), or n (%). *Analyzed by Student’s t test, Mann-Whitney U test, or Fisher’s exact test where appropriate.
| Variable | Placebo (n=9) |
Lidocaine (n=8) |
P* |
|---|---|---|---|
| Voiding efficiency (%) | 92 (75, 95) | 93 (91, 94) | 0.81 |
| PVR (mL) | 60 (37, 199.5) | 51 (32, 72.25) | 0.42 |
| Pdet@Qmax (cmH2O) | 44 ± 15 | 40 ± 15 | 0.64 |
| Pabd recruitment during flow | 1 (11) | 1 (12.5) | 1.00 |
| Intermittent flow pattern | 4 (44) | 2 (25) | 0.62 |
| Elevated EMG activity | 3 (33) | 1 (12.5) | 0.59 |