Abstract
The purpose of this study was to describe patterns of intraoperative tissue interface pressure, identify the amount of time during which the pressure at four anatomical locations exceeded 32mm Hg, and examine associations between patient- and surgery-related variables and peak tissue interface pressure. We used a pressure mapping system to measure the intraoperative tissue interface pressure of 150 patients. We implemented linear mixed-effects models to assess trends in the mean and peak tissue interface pressure. The percentage of time during which the interface pressure exceeded 32mm Hg at the scapulae, interscapular area, and sacral area was 70%, 70%, and 90%, respectively. Body mass index, length of surgery, and intraoperative position were major predictors of increased pressure. Understanding patterns of tissue interface pressure of patients during surgery may help perioperative nurses develop strategies to attenuate pressure and protect skin integrity.
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