Results of rectal sensitivity testing by barostat balloon distension. First sensation (FS) and first desire (FD) are the pressures at which the patient first noticed rectal distension and desire to defecate, respectively
| Median pressure above MDP (mm Hg) | Preoperatively | 6 months | 12 months | p Value |
|---|---|---|---|---|
| MDP | 14 (12–20) | 16 (12–20) | 16 (12–16) | >0.05 |
| Sensory thresholds | ||||
| FS | 4 (2–6) | 5 (0–24) | 10 (2–22) | >0.05 |
| FD | 10 (8–18)a | 12 (8–34) | 18 (10–34)a | 2-a0.03 |
| MTP | 14 (8–24)a | 22 (8–34) | 26 (14–40)a | 2-a0.02 |
aMDP, minimal distension pressure; MTV, maximum tolerated volume.
↵2-a Significant increase in FD and MTP, 12 month levels compared with preoperative results.