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Impact of Not Measuring Residual Gastric Volume in Mechanically Ventilated Patients Receiving Early Enteral Feeding: A Prospective Before–After Study

¹ Medical-Surgical Intensive Care Unit, District Hospital Center
² Emergency Unit, Hotel-Dieu University Hospital
³ Medical-Surgical Intensive Care Unit, District Hospital Center; University of Medicine

^* To whom correspondence should be addressed. E-mail: jean.reignier{at}chd-vendee.fr.

	Abstract

Background: Monitoring of residual gastric volume (RGV) to prevent aspiration is standard practice in mechanically ventilated patients receiving early enteral nutrition (EN). No data are available to support a correlation between RGV and adverse event rates. We evaluated whether not measuring RGV affected EN delivery, vomiting, or risk of nosocomial pneumonia. Methods: Two hundred and five eligible patients with nasogastric feeding within 48 hours after intubation were included in a 7-day prospective before–after study. Continuous 24-hour nutrition was started at 25 mL/h then increased by 25 mL/h every 6 hours, to 85 mL/h. In both groups, intolerance was treated with erythromycin (250 mg IV/6 h) and a delivery rate decrease to the previously well-tolerated rate. RGV monitoring was used during the first study period (n = 102), but not during the subsequent intervention period (n = 103). Intolerance was defined as RGV >250 mL/6 h or vomiting in the standard-practice group and as vomiting in the intervention group. Results: Groups were similar for baseline characteristics. Median daily volume of enteral feeding was higher in the intervention group (1489; interquartile range [IQR], 1349–1647) than in the controls (1381; IQR, 1151–1591; P = .002). Intolerance occurred in 47 (46.1%) controls and 27 (26.2%) intervention patients (P = .004). The vomiting rate did not differ between controls and intervention group patients (24.5% vs 26.2%, respectively; P = .34), and neither was a difference found for ventilator-associated pneumonia (19.6% vs 18.4%; P = .86). Conclusion: Early EN without RGV monitoring in mechanically ventilated patients improves the delivery of enteral feeding and may not increase vomiting or ventilator-associated pneumonia. (JPEN J Parenter Enteral Nutr.XXXX;xx:xx-xx)

First published on October 27, 2009
Journal of Parenteral and Enteral Nutrition 2009, doi:10.1177/0148607109344745


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