Table 3.
Agreement in diagnoses between protocols according to either 10 supine swallows or the 5 upright swallows
| 5 upright Swallows | Total | ||||||
|---|---|---|---|---|---|---|---|
| A | B | C | D | E | |||
| 10 supine swallows | A | 7 | 1 | 0 | 0 | 0 | 8 |
| B | 0 | 11 | 0 | * 1 | 0 | 12 | |
| C | 0 | 0 | 18 | # 2 | 0 | 20 | |
| D | 0 | α 2 | # 3 | 62 | 2 | 69 | |
| E | 0 | α 2 | # 1 | 16 | 20 | 39 | |
| Total | 7 | 16 | 22 | 81 | 22 | 148 | |
A: Achalasia; B: EGJ outflow obstruction; C (Abnormal motility): Absent peristalsis, distal esophageal spasm, hypercontractile esophagus; D (Borderline): Weak peristalsis; frequent failed peristalsis; hypertensive peristalsis, rapid contraction; E: Normal
α
Discrepancies due to an increase in the IRP in the upright position
*
Diagnosis change from EGJ outflow obstruction to weak peristalsis when shift to upright
#
Discrepancies due to the change in contractility related to the position change