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Gender effects on esophageal motility
R O Dantas1, E Ferriolli, M A Souza
1Departamento de Clínica Médica, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Brasil.
Summary
Gender influences esophageal motility, with differences observed in contraction duration and velocity during wet swallows. These findings, though not clinically significant, are important for interpreting esophageal manometry tests.
Area of Science:
- Gastroenterology
- Physiology
Background:
- Previous studies suggested no gender-based differences in esophageal motility.
- These studies often lacked multiple swallows and quantitative analysis of esophageal contractions.
Purpose of the Study:
- To investigate potential gender effects on esophageal motility.
- To quantitatively evaluate esophageal contractions in healthy men and women.
Main Methods:
- Esophageal manometry was performed on 40 healthy volunteers (20 men, 20 women).
- Subjects underwent wet and dry swallows with a 5-ml water bolus.
- Measurements included sphincter pressures and contraction characteristics at various esophageal levels.
Main Results:
- Significant gender differences were found in the duration of contractions 5 cm above the lower esophageal sphincter during wet swallows (women exhibited longer durations).
- Velocity of contractions from 15 to 10 cm above the lower esophageal sphincter differed between genders (men showed faster velocity).
- No significant gender differences were observed in sphincter pressures, relaxation, contraction amplitude, or failed/abnormal contractions.
Conclusions:
- Gender appears to influence certain aspects of esophageal motility.
- Observed differences are subtle and likely not clinically significant.
- These gender-related variations should be considered during the interpretation of esophageal manometry results.