Table 3.
Anorectal Manometry and Rectal Exam [data show mean (SD) or %]
| DPS Constipation | Non-DPS Constipation | P-value | |
|---|---|---|---|
| N | 20 | 275 | |
| Anorectal Manometry | |||
| Maximum pressure at rest (mmHg) | 83.2 (69.60–96.80) | 95.0 (91.4–98.7) | 0.051 |
| Maximum pressure with squeeze (mmHg) | 138.8 (106.9–170.7) | 174.5(165.9–183.1) | 0.0006 |
| Volume to first rectal sensation (mL) | 41.67 (28.86–54.5) | 37.03 (33.7–40.4) | 0.53 |
| Volume to rectal urge sensation (mL) | 93.33 (67.75–118.9) | 71.9 (65.2–78.6) | 0.27 |
| Volume to rectal discomfort sensation (mL) | 154.12 (119.5–88.7) | 111.3 (102.4–120.2) | 0.075 |
| Digital Rectal Examination | |||
| Estimated mean pelvic floor descent (cm) | 3.38 | 2.15 | 0.0023 |
| Puborectalis tenderness (%) | 13.4 | 34.6 | 0.038 |
| Increased resting anal sphincter tone (%) | 8.7 | 31.6 | 0.03 |
| Paradoxical contraction (%) | 22.7 | 50.8 | 0.014 |