Table 3 Results of anal vector manometry in patients with or without anal sphincter defect (patients with rectal prolapse included).
Anal sphincter defect | Normal sphincter | p | |
|---|---|---|---|
number of patients | 19 | 25 | |
Mean (SEM) anal resting pressure (cm H2O) | 54 (10) | 56 (9) | 0.8 |
Mean (SEM) anal squeeze pressure (cm H2O) | 93 (16) | 107 (13) | 0.5 |
Mean (SEM) ASAI at rest (%) | 28 (3) | 23 (2) | 0.2 |
Mean (SEM) ASAI during squeezing (%) | 27 (2) | 19 (2) | 0.024 |