Table 2.
Comparison between types of primary rumination.
| Type L-R-F (LES relaxation-R wave-Bolus Flow) | Type R-L-F (R wave-LES relaxation-Bolus Flow) | Type N-R-F (no LES relaxation-R wave-Bolus Flow) | |
|---|---|---|---|
| Number of Primary Rumination Episodes (%) | 21 (51) | 8 (20) | 12 (29) |
| LES baseline pressure (mmHg) | 29.1 ± 2.7 | 22.7 ± 3.1 | 29.3 ± 4.4 |
| LES pressure during rumination episode (mmHg) | 7.2 ± 1.9 | 6.5 ± 1.8 | 16.0 ± 2.4 |
| Gastric pressure before R wave (mmHg) | 10.0 ± 0.6 | 14.0 ± 1.1 | 10.7 ± 8.3 |
| Gastric pressure during R wave (mmHg) | 82 ±8.6 | 89.8 ±16.7 | 71.3 ± 14.2 |
| Duration of gastric R wave (sec) | 0.7 ± 0.2 | 0.5± 0.2 | 0.8 ± 0.4 |
| Difference between baseline gastric pressure and peak R wave gastric pressure (mmHg) | 72.9 ±8.8 | 76.1± 17.0 | 61.0 ± 14.0 |
| Thoracic pressure before R wave (mmHg) | −0.6 ± 0.9 | 3.3± 1.2 | −0.3± 1.0 |
| Thoracic pressure during R wave (mmHg) | 55.0 ± 8.6 | 71.5± 16.4 | 61.0 ± 15.0 |
| Difference between baseline thoracic pressure and peak R wave thoracic pressure (mmHg) | 55.6 ± 8.6 | 70.0± 19.1 | 61.1 ± 15.1 |
| Difference between baseline gastric pressure and thoracic pressure at baseline (mmHg) | 10.5 ± 1.1 | 10.6± 1.3 | 11.0± 0.7 |
| Difference between gastric pressure and thoracic pressure during rumination (mmHg) | 27.0 ± 5.3 | 18.4± 4.7 | 10.6± 0.7 |
| Mean time from R wave to bolus entry (sec) | 0.2 ± 0.1 | 0.5± 0.3 | 0.1+ 0.1 |
| Mean time LES relaxation to bolus entry (sec) | 6.0 ± 2.0 | −0.2± 0.2 | No relaxation |
| Mean time from LES relaxation to start of R wave (sec) | 6.0 ±2.5 before R wave | 0.3 ± 0.5 after R wave | No relaxation |
| Time from bolus presence in the esophagus to R wave (sec) | 17 episodes simultaneous 4.35 + 1.84 sec with 4 episodes after R | 0.5 ±0.3 after R wave | 0.1 ± 0.1 after R wave |
| Duration of bolus presence in the esophagus (sec) | 4.3± 7.8 | 2.6± 3.4 | 1.1± 1.8 |
| Percentage of episodes sensed by patient prior to rumination | 33 | 62 | 33 |
| UES opening during rumination (%) | 86 | 75 | 64 |
| Bolus reaching UES during rumination (%) | 52 | 88 | 46 |
| During meal (%)* | 33 | 87 | 33 |
*
P=0.02