Table 1.
Summary data for cyclic motor patterns
| Preoperative | Intraoperative | Postoperative | P * | Controls | |
|---|---|---|---|---|---|
| Antegrade | |||||
| Amplitude (mmHg) | 18·5(3·2) | 33·4(17·9) | 31·1(16·0) | 0·045 | 24·7(7·4) |
| Velocity (cm/s) | 1·6(0·2) | 1·5(0·5) | 1·5(0·1) | 0·909 | 0·9(0·1)‡ |
| Extent (cm) | 5·0(0·4) | 6·5(1·3) | 7·1(0·9) | 0·003 | 8·8(0·2)† |
| Retrograde | |||||
| Amplitude (mmHg) | 20·5(4·9) | 34·2(17·6) | 31·2(12·0) | 0·015 | 31·5(10·2) |
| Velocity (cm/s) | 1·4(0·4) | 1·5(0·3) | 1·4(0·3) | 0·359 | 1·5(0·9) |
| Extent (cm) | 5·4(0·5) | 7·4(2·5) | 7·5(0·9) | 0·054 | 11·3(3·7)† |
Values are mean(s.d.).
*
Comparison of preoperative, intraoperative and postoperative periods;
†
P < 0·050,
‡
P < 0·001, postoperative versus control postprandial data (normal baseline colonic activity in its active non-operative state) (repeated-measures ANOVA).