This is a reasonable view; a high
gastric residual volume increases the risk of gastroesophageal
reflux and subsequent aspiration of gastric
contents into the trachea. In one study, investigators
reported a high correlation coefficient (0.93) between
gastric residual volume and gastroesophageal reflux in
19 critically ill patients. The most frequently cited
volume of concern is 200 mL or greater.