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Sensory testing of the esophagus
1Neuro-Enteric Clinical Research Group, Department of Medicine, Section of Gastroenterology, Southern Arizona VA Health Care System, Tucson, Arizona 85723, USA. Ronnie.Fass@med.VA.gov
Journal of Clinical Gastroenterology
|August 21, 2004
Summary
New methods improve understanding of esophageal sensory testing for functional esophageal disorders. However, study design flaws and unrecognized modulating factors hinder accurate interpretation of results.
Area of Science:
- Gastroenterology
- Neurogastroenterology
- Esophageal Physiology
Background:
- Historically, esophageal sensory testing for non-cardiac chest pain relied on acid perfusion and edrophonium tests.
- Increased interest in functional esophageal disorders necessitates advanced techniques to understand esophageal pain mechanisms.
Purpose of the Study:
- To review advancements in esophageal sensory testing techniques.
- To highlight challenges and limitations in current study designs and interpretation.
Main Methods:
- Review of established and novel esophageal sensory testing modalities.
- Discussion of techniques including balloon distension, electrical stimulation, impedance planimetry, intraluminal ultrasonography, and central evaluation.
Main Results:
- Newer techniques like balloon distension and impedance planimetry provide insights into esophageal sensory thresholds.
- Intraluminal ultrasonography and central evaluation offer physiological and neurological perspectives.
- Significant design flaws and unrecognised modulating factors impede reliable interpretation of esophageal sensory testing results.
Conclusions:
- Despite advancements, esophageal sensory testing requires improved study designs to overcome current limitations.
- Further research is needed to identify and account for factors modulating esophageal sensation for accurate diagnosis.