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Related Experiment Video

Updated: Apr 27, 2026

Quantitative Autonomic Testing

Quantitative Autonomic Testing

Published on: July 19, 2011

How to perform and interpret balloon expulsion test.

Bong Eun Lee¹, Gwang Ha Kim¹

¹Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea.

Journal of Neurogastroenterology and Motility

|June 21, 2014

Summary

This summary is machine-generated.

The balloon expulsion test assesses defecatory disorders by simulating stool evacuation. This review examines its techniques, interpretation, and clinical usefulness due to inconsistent methodologies.

Keywords:

Constipation, Defecation, Functional gastrointestinal disorders

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Area of Science:

Gastroenterology
Colorectal Surgery
Physiology

Background:

Defecatory disorders are common, impacting quality of life.
The balloon expulsion test (BET) is a diagnostic tool for these conditions.
Current BET methodology lacks standardization, leading to variable results.

Purpose of the Study:

To review the techniques used in the balloon expulsion test.
To discuss the interpretation of BET results.
To evaluate the clinical utility of the BET in diagnosing defecatory disorders.

Main Methods:

Literature review of studies on the balloon expulsion test.
Analysis of reported techniques, interpretation criteria, and clinical applications.
Synthesis of findings regarding BET standardization and utility.

Main Results:

The BET assesses the ability to expel a simulated stool.
Significant variability exists in BET protocols and interpretation guidelines.
Despite limitations, the BET offers insights into defecatory dysfunction.

Conclusions:

Standardizing the balloon expulsion test is crucial for reliable diagnosis.
Further research is needed to refine BET methodology and interpretation.
The BET remains a valuable, albeit imperfect, tool for evaluating defecatory disorders.