Simple adjustable bed bases feature either head or foot elevation, while more complex bases have both leg and head adjustments. Some, such as the Tempur-Ergo, also feature changeable lumbar support.

During the night these patients slept on a bed with a single pillow (without bed head elevation). Patients who had predominant supine reflux on esophageal pH test continued to stay in hospital on ...

Bed head elevation was done during the night-time from 22.00 hours to 05.00 hours. Patients who were upright or combined refluxers were excluded from the study as no bed head elevation was done ...