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Related Experiment Videos

[Study on correlation between postures and gastroesophageal reflux]

J Xu1, J Zhang

  • 1Department of Gastroenteroloy, Union Hospital, Tongji Medical University, Wuhan.

Zhonghua Nei Ke Za Zhi
|March 1, 1996
PubMed
Summary
This summary is machine-generated.

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Gastroesophageal reflux disease patients showed no significant differences in reflux episodes between upright and supine positions. Lower esophageal sphincter relaxation is the primary reflux mechanism in both postures, suggesting upright reflux is significant for esophagitis.

Area of Science:

  • Gastroenterology
  • Digestive Physiology

Background:

  • Gastroesophageal reflux disease (GERD) is a common condition.
  • Understanding reflux mechanisms in different body postures is crucial for GERD management.

Purpose of the Study:

  • To compare the frequency and mechanisms of esophageal and gastric reflux in upright versus supine postures.
  • To investigate the role of lower esophageal sphincter relaxation and gastric pressure in GERD.

Main Methods:

  • Simultaneous esophageal and gastric manometry with intraesophageal pH monitoring.
  • Study conducted on 12 patients diagnosed with gastroesophageal reflux disease.

Main Results:

  • No significant differences were observed in the number of reflux episodes between upright and supine postures.

Related Experiment Videos

  • Acid clearance time and percentage of time with pH below 4 were similar in both positions.
  • Reflux associated with lower esophageal sphincter relaxation (LESR) and increased gastric pressure occurred with similar frequency in both postures.

    • Conclusions:

    • Upright reflux may contribute to reflux esophagitis as significantly as supine reflux.
    • Lower esophageal sphincter relaxation is identified as the primary mechanism for reflux in both postures.
    • Increased gastric pressure may be a contributing factor to gastroesophageal reflux.