The Supportive Role of Provocative Maneuvers and Impedance Clearance in Detecting Ineffective Esophageal Motility

Virali Shah, Alla Turshudzhyan, Alexandra Mignucci, Micheal Tadros

Abstract


Background: Ineffective esophageal motility (IEM) is one of the most common esophageal motility disorders. However, the definition of IEM has evolved. Chicago classification version 4.0 (CCv4.0) made IEM parameters more stringent with greater than 70% of ineffective wet swallows (WS) necessary to diagnose conclusive IEM. Of the ineffective swallows, 50-70% are deemed inconclusive cases. This study sought to determine whether provocative maneuvers, including multiple rapid swallows (MRS) and apple viscous swallows (AVS), and impedance clearance can provide supportive information for inconclusive IEM disorders based on CCv4.0.

Methods: Esophageal motility data on 100 patients were analyzed. All patients completed WS and at least one additional swallow test (MRS and/or AVS). Patients were classified as having conclusive IEM, inconclusive IEM, or normal motility. IEM features detected on MRS/AVS and incomplete bolus clearance were recorded. Percentage of agreement between IEM features and incomplete bolus clearance was calculated for each motility group.

Results: Ten patients had conclusive IEM, nine had inconclusive IEM, and 32 had normal motility. There was 70% agreement between IEM features and incomplete bolus clearance with conclusive IEM, 33% agreement with inconclusive IEM, and 9% agreement with normal motility. There was significantly more agreement in the conclusive and inconclusive IEM groups than in the normal motility group (P = 0.0003).

Conclusions: Combinational follow-up testing with provocative maneuvers and impedance clearance may assist with risk stratification of IEM patients and assist in further management of inconclusive IEM. MRS and AVS can detect unique IEM features that may help with preoperative management of inconclusive IEM.




Gastroenterol Res. 2022;15(5):225-231
doi: https://doi.org/10.14740/gr1552

Keywords


Ineffective esophageal motility; Chicago classification; Manometry; Esophagus; Impedance clearance

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