In addition to lower esophageal sphincter (LES) relaxations and decreased LES tone, increased intra-abdominal pressure can also play role in the pathogenesis of gastroesophageal reflux disease (GERD),. Aim: To analyze the correlation between occupation-related increased intra-abdominal pressure or straining (experienced for years) and the prevalence of GERD symptoms. Methods: Reflux symptoms were analyzed through a questionnaire among professional singers, wind players and glassblowers in comparison with controls. Results: Heartburn, regurgitation and hoarseness were significantly more frequent among professional singers than in controls (P<0.001). Among wind players heartburn (P<0.05) and regurgitation (P<0.01), among glassblowers regurgitation (P<0.01) were significantly more frequent in comparison with control subjects. Reflux symptoms correlated significantly with the duration of professional activity (P<0.05). Conclusions: Results suggest that reflux symptoms are more frequent among subjects with occupation-related increased intra-abdominal pressure. GERD seems to be a work-related disease in this aspect.
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