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Related Experiment Videos

Segmental versus diffuse nutcracker esophagus: an intermittent motility pattern

S R Achem1, B E Kolts, L Burton

  • 1Department of Medicine, University of Florida Health Science Center, Jacksonville.

The American Journal of Gastroenterology
|June 1, 1993
PubMed
Summary

Segmental high-amplitude peristaltic contractions (SHAPC) and nutcracker esophagus (NE) are distinct esophageal motility disorders in noncardiac chest pain patients. These patterns are labile and do not represent an evolving spectrum, indicating a variable marker for chest pain.

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Area of Science:

  • Gastroenterology
  • Esophageal Physiology
  • Digestive Disorders

Background:

  • Nutcracker esophagus (NE) is a common esophageal motility abnormality linked to noncardiac chest pain.
  • NE is traditionally viewed as a diffuse distal esophageal process, though some consider it segmental.

Purpose of the Study:

  • To compare segmental high-amplitude peristaltic contractions (SHAPC) with diffuse NE in noncardiac chest pain patients.
  • To investigate if SHAPC represents an early stage of NE.
  • To analyze prevalence, clinical features, consistency, and manometric course of SHAPC versus NE.

Main Methods:

  • Comparative analysis of patient cohorts with SHAPC and NE.
  • Clinical feature assessment and esophageal manometry.
  • Follow-up manometric studies to assess diagnostic consistency and pattern evolution.

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Main Results:

  • Prevalence and clinical features of SHAPC and NE were similar.
  • Abnormally high peristaltic amplitude was observed in the proximal esophagus in 39% of patients.
  • Follow-up manometry showed low diagnostic consistency: 53% of NE and 20% of SHAPC patients retained their diagnosis.
  • Significant permutation between NE and SHAPC groups occurred (33% and 40%, respectively).

Conclusions:

  • SHAPC does not appear to be an early manifestation of NE; they are distinct patterns.
  • High-amplitude peristaltic contractions, whether segmental or diffuse, represent a labile marker associated with noncardiac chest pain.
  • Esophageal motility patterns in noncardiac chest pain are dynamic and may not represent a fixed disease spectrum.