Hamilton et al. Digestive Dis Sciences (1988).
Using continuous monitoring of pH (acidity) within the esophagus among several alternative positions at rest, this randomized clinical trial detected a significant decrease in the time that the esophagus was exposed to highly acid conditions when using a foam wedge to elevate the head, and also showed a decrease in the time necessary for the acid to be cleared. Interestingly, use of a wedge-shaped mechanism was significantly more effective than elevation through the use of standard bed blocks.
Davis C. Ryman
MD/PhD candidate, Case Western Reserve University
Lamb lab, Departments of Neuroscience and Genetics
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