
Comparison of Endoscopic, Manometric, and pH-Impedance Parameters of All Participants
Parameters | Total (N = 177) |
AET < 4% (n = 55) |
4% ≤ AET ≤ 6% (n = 69) |
AET > 6% (n = 53) |
AET ≥ 4% (n = 122) |
||
---|---|---|---|---|---|---|---|
Endoscopy | |||||||
Esophagitis | 39 (22.0) | 8 (14.6) | 15 (21.7) | 16 (30.2) | 0.146 | 31 (25.4) | 0.107 |
Grade A | 17 (9.6) | 6 (10.9) | 5 (7.3) | 6 (11.3) | - | 11 (9.0) | - |
Grade B | 22 (12.4) | 2 (3.6) | 10 (14.5) | 10 (18.9) | - | 20 (16.4) | - |
24-Hour pH-impedance parameters | |||||||
MNBI (Ω) | 2740 ± 1377 | 4053 ± 1031 | 2471 ± 1085a,b | 1725 ± 840 |
< 0.001 | 2147 ± 1050 | < 0.001 |
MNBI < 2292 | 75 (42.4) | 2 (3.6) | 31 (44.9)a,b | 42 (79.3) |
< 0.001 | 73 (59.8) | < 0.001 |
PSPWi (%) | 29.4 ± 20.1 | 46.2 ± 23.2 | 26.4 ± 12.2a,b | 16.0 ± 10.9 |
< 0.001 | 21.9 ± 12.7 | < 0.001 |
PSPWi < 61% | 150 (84.7) | 31 (56.4) | 67 (97.1) |
52 (98.1) |
< 0.001 | 119 (97.5) | < 0.001 |
Reflux episodes | 41.4 ± 31.2 | 37.1 ± 28.0 | 39.5 ± 25.7 | 48.5 ± 39.1 | 0.131 | 43.4 ± 32.4 | 0.210 |
Weakly acidic reflux | 21.6 ± 21.7 | 25.9 ± 19.8 | 18.4 ± 18.1 | 21.3 ± 26.9 | 0.161 | 19.7 ± 22.3 | 0.077 |
Alkaline reflux | 0.8 ± 2.6 | 1.4 ± 3.5 | 0.7 ± 2.3 | 0.4 ± 1.5 | 0.118 | 0.6 ± 2.0 | 0.106 |
Reflux episodes > 80 | 12 (6.8) | 1 (1.8) | 4 (5.8) | 7 (13.2) |
0.057 | 11 (9.0) | 0.108 |
SAP > 95% | 64 (36.2) | 18 (32.7) | 21 (30.4) | 25 (47.2) | 0.132 | 46 (37.7) | 0.524 |
HRM parameters | |||||||
EGJ II/III | 41 (23.2) | 5 (9.1) | 18 (26.1) |
18 (34.0) |
0.007 | 36 (29.5) | 0.003 |
Hypotensive EGJ | 57 (32.2) | 14 (25.5) | 28 (40.6) | 15 (28.3) | 0.155 | 43 (35.3) | 0.197 |
IEM | 96 (54.2) | 22 (40.0) | 42 (60.9) |
32 (60.4) |
0.038 | 74 (60.7) | 0.011 |
a
b
c
MNBI, mean nocturnal baseline impedance; PSPWi, post-reflux swallow-induced peristaltic wave index; SAP, symptom association probability; HRM, high-resolution manometry; EGJ, esophagogastric junction; IEM, ineffective esophageal motility.
Data are presented as n (%) or mean ± SD.