Premium
Improving the utility of high‐resolution manometry for the diagnosis of defecatory disorders in women with chronic constipation
Author(s) -
Sharma Mayank,
Muthyala Anjani,
Feuerhak Kelly,
Puthanmadhom Narayanan Susrutha,
Bailey Kent R.,
Bharucha Adil E.
Publication year - 2020
Publication title -
neurogastroenterology and motility
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.489
H-Index - 105
eISSN - 1365-2982
pISSN - 1350-1925
DOI - 10.1111/nmo.13910
Subject(s) - medicine , anorectal manometry , chronic constipation , constipation , gastroenterology , high resolution manometry , high resolution , urology , disease , remote sensing , reflux , geology
Abstract Background We compared the utility of existing and modified versions of high‐resolution manometry for diagnosing defecatory disorders (DD). Methods In 64 healthy and 136 constipated women, we compared left lateral (LL) and seated manometry, and analyzed with existing (ManoView™) and new methods, for discriminating between constipated patients with normal and prolonged rectal balloon expulsion time (BET). In both positions, the rectoanal gradient (RAG) and, for the new analysis, the pressure topography pattern during evacuation were used to discriminate between constipated patients without and with DD. Key Results The BET was prolonged, suggestive of a DD, in 52 patients (38%). During evacuation, rectoanal pressures and the RAG were greater in the seated than the LL position ( P ≤.001). The new analysis identified 4 rectoanal pressure patterns. In the seated position, the BET was associated with the pattern ( P =.0001), being prolonged in, respectively, 45%, 15%, 53%, and 0% of patients with minimal change, anal relaxation, paradoxical contraction, and transmission. Within each pattern, the RAG was greater (ie, less negative, P <.0001) in patients with a normal than a prolonged BET. Compared to the ManoView™ RAG in the LL position, the integrated analysis (ie, pattern and new RAG) in the LL position ( P< .01) and the seated ManoView™ gradient ( P= .02) were more effective for discriminating between constipated patients without and with DD. Conclusions & Inferences Anorectal HRM ideally should be performed in the more physiological seated position and analyzed by a two‐tier approach, which incorporates the overall pattern followed by the rectoanal gradient. These findings reinforce the utility of manometry for diagnosing DD.