Gastric Residual Volume Monitoring in ICU Patients

Introduction to GRV Monitoring

The American Society of Parenteral and Enteral Nutrition recommends that routine monitoring of gastric residual volume (GRV) is not necessary for ICU patients receiving Ryle's tube (RT) feeding, except in patients with feeding intolerance or those at high risk of aspiration 1, 2

GRV should not be routinely monitored in critically ill patients receiving enteral nutrition via RT, as recommended by the Society of Critical Care Medicine 1, 3
GRV measurement should be performed in specific situations, such as when patients demonstrate signs of feeding intolerance, as suggested by the European Society of Clinical Nutrition and Metabolism 1, 4
The American College of Gastroenterology recommends GRV measurement in patients considered at high risk for aspiration 1, 2

Vomiting or regurgitation may indicate feeding intolerance, according to the Clinical Nutrition journal 3
Abdominal distension and abdominal pain or discomfort are signs of feeding intolerance that may require GRV measurement, as noted by the Clinical Nutrition journal 4
Absence of bowel sounds is a sign of feeding intolerance that may require GRV measurement, as recommended by the Centers for Disease Control and Prevention 5

Patients with impaired consciousness may benefit from GRV monitoring, as suggested by the MMWR Recommendations and Reports 5
Patients with neurological disorders affecting swallowing may require GRV monitoring, according to the MMWR Recommendations and Reports 5
Patients in prone position may benefit from GRV monitoring, as recommended by the Clinical Nutrition journal 4

If GRV monitoring is performed, enteral feeding should be continued unless GRV exceeds 500 mL/6 hours, as recommended by the Clinical Nutrition journal 3, 4
For patients with GRV >500 mL/6 hours, temporarily holding enteral feeding and performing an abdominal examination to rule out acute abdominal complications is recommended by the Clinical Nutrition journal 4
Consideration of prokinetic agents, such as erythromycin, is recommended for patients with elevated GRV, as suggested by the Clinical Nutrition journal 3, 4

Use of prokinetic agents, such as intravenous erythromycin, is recommended as first-line therapy for elevated GRV, according to the Clinical Nutrition journal 3, 4
Consideration of post-pyloric feeding tube placement is recommended for patients with persistent feeding intolerance despite prokinetic use, as suggested by the Intensive Care Medicine journal 1, 2, 6

For pediatric ICU patients, routine GRV measurement is not recommended, as noted by the Intensive Care Medicine journal 6
In non-surgical critically ill patients with sepsis or septic shock, GRV monitoring should be avoided unless feeding intolerance is present, as recommended by the Critical Care Medicine journal 7, 1
Early enteral nutrition is recommended for most critically ill patients, with gradual advancement as tolerated, according to the Critical Care journal 8, 9