Table 3:
HRM Parameters in Female Participants with Normal and Abnormal BET
| Variable | Women with Normal BET (n = 96) | Women with Abnormal BET (n = 17) | P Value | ||
|---|---|---|---|---|---|
| Mean ± SD | 10th, 90th percentile | Mean ± SD | 10th, 90th percentile | ||
| Anal resting pressure | 78 ± 25 | 44, 110 | 77 ± 21 | 48, 100 | .83 |
| Anal HPZ length (cm) | 3.4 ± 0.8 | 2.3, 4.5 | 3.5 ± 0.9 | 2.3, 4.7 | .44 |
| Anal squeeze pressure a | 201 ± 61 | 127, 281 | 203 ± 52 | 121, 262 | .80 |
| Anal squeeze increment a, b | 124 ± 56 | 51, 194 | 125 ± 45 | 49, 191 | .69 |
| Anal squeeze duration (s) c | 13 ± 7 | 3, 22 | 14 ± 6 | 4, 21 | >.99 |
| First sensation (mL) | 37 ± 14 | 20, 58 (n = 81) | 44 ± 19 | 20, 76 (n = 15) | .24 |
| Urgency (mL) | 63 ± 22 | 40, 90 (n = 82) | 75 ± 22 | 60, 120 (n = 15) | .03 |
| Discomfort (mL) | 102 ± 31 | 60, 140 (n = 79) | 135 ± 68 | 72, 264 (n = 15) | .12 |
| Balloon expulsion time (s) | 12 ± 12 | 2, 24 | 163 ± 38 | 82, 180 | - |
| Simulated evacuation without rectal distention | |||||
| Rectal pressure | 30 ± 21 | 4, 62 | 27 ± 15 | 9, 52 | .70 |
| Anal pressure | 63 ± 21 | 36, 91 | 78 ± 23 | 40, 110 | .01 |
| Rectoanal gradient | −34 ± 26 | −66, 2 | −52 ± 27 | −84, −12 | .02 |
| Anal relaxation (%) | 20 ± 35 | −16, 50 | 10 ± 30 | −42, 57 | .07 |
| Simulated evacuation with rectal distention | |||||
| Rectal pressure | 165 ± 58 | 124, 197 | 138 ± 36 | 63, 182 | .02 |
| Anal pressure | 63 ± 24 | 38, 98 | 71 ± 21 | 35, 104 | .09 |
| Rectoanal gradient | 101 ± 66 | 45, 138 | 67 ± 37 | 0, 113 | .002 |
| Anal relaxation (%) | 14 ± 25 | −10, 43 | 3 ± 30 | −35, 50 | .046 |
| Valsalva without rectal distention | |||||
| Anal Pressure | 116 ± 43 | 62, 174 | 146 ± 52 | 91, 242 | .046 |
Values are mm Hg unless stated otherwise. HPZ – high pressure zone.
a
These values are derived from the squeeze maneuver with the highest squeeze pressure
b
Squeeze increment is (anal squeeze pressure – anal resting pressure)
c
Average squeeze duration of 3 maneuvers.