Journal of Neurogastroenterology and Motility : eISSN 2093-0887 / pISSN 2093-0879

Table. 1.

Comparisons Between High-resolution Impedance Manometry Systems

Clinical characteristics All HRIM(N = 36) Diversatek HRIM(n = 14) Medtronic HRIM(n = 22) P-valuea
Age (yr) 59.6 ± 1.7 62.0 ± 2.2 58.1 ± 2.4 0.259
Gender (female) 8 (22%) 3 (21%) 5 (23%) 0.927
BMI 30.5 ± 0.7 29.9 ± 1.1 30.9 ± 0.9 0.473
Perceptive dominant symptom 27 (75%) 11 (79%) 16 (73%) 0.693
GSS 69.0 ± 4.5 62.9 ± 6.5 72.9 ± 6.0 0.279
DSI 10.4 ± 1.0 8.7 ± 1.7 11.4 ± 1.2 0.180
Normal esophageal body motility on HRM 25 (69%) 10 (71%) 15 (68%) 0.837
Total AET (%) 1.6 ± 0.2 1.2 ± 0.3 1.8 ± 0.3 0.247
BI-HRIM 1564 ± 140 1062 ± 124 1884 ± 186 0.003
MNBI-17 2184 ± 150 2387 ± 260 2055 ± 180 0.285
MNBI-15 2083 ± 149 2151 ± 230 2039 ± 199 0.719
MNBI-9 1553 ± 121 1703 ± 168 1458 ± 167 0.332
MNBI-7 1589 ± 148 1699 ± 226 1519 ± 198 0.561
MNBI-5 1474 ± 152 1713 ± 269 1322 ± 177 0.214
MNBI-3 1376 ± 139 1614 ± 274 1225 ± 142 0.175
Distal MNBIb 1498 ± 124 1683 ± 204 1381 ± 154 0.241

aComparison between Diversatek and Medtronic high-resolution impedance manometry (HRIM) systems (performed with independent-samples t tests or Chi-square, as appropriate).

bDistal mean nocturnal baseline impedance (MNBI) represents the averaged MNBI values for 3,5,7, and 9 cm above the lower esophageal sphincter (LES).

BMI, body mass index; GSS, global symptom severity; DSI, dominant symptom intensity; HRM, high-resolution manometry; AET, acid exposure time; BI-HRIM, baseline impedance from HRIM.

J Neurogastroenterol Motil 2020;26:455~462 https://doi.org/10.5056/jnm19142
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