Trial reportNursing in critical care2026
Efficacy and Tolerability of Non-Routine Gastric Residual Volume Monitoring in Mechanically Ventilated Adults Receiving Early Enteral Nutrition: A Randomised Controlled Non-Inferiority Trial.
Trial report in Nursing in critical care, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundPatients receiving early enteral nutrition in the intensive care unit (ICU) often undergo gastric residual volume (GRV) monitoring to assess feeding tolerance. Despite guidelines recommending non-routine monitoring, many ICUs continue to perform 4-hourly GRV checks, which may lead to unnecessary feeding interruptions and increased nursing workload.
aimTo explore the impact of non-routine monitoring of GRV on feeding intolerance in patients receiving early enteral nutrition. STUDY
designThis was a randomised controlled non-inferiority trial conducted in a tertiary A-level hospital. Patients receiving mechanical ventilation and continuous enteral nutrition were randomly assigned to an intervention group (GRV monitored once at 12 h, then once daily) or a control group (routine 4-hourly monitoring). Feeding intolerance was defined as vomiting or GRV > 200 mL.
resultsEach group included 52 patients. Feeding intolerance occurred in 36.5% of the intervention group versus 21.2% of controls, with an absolute difference of 15.4% (95% CI -2.0 to +31.6; p = 0.13), indicating a non-significant difference between the two groups. Competing-risk models showed no significant between-group difference (adjusted HR 1.35, 95% CI 0.62 to 2.92; p = 0.45). Higher BMI was associated with lower intolerance risk (HR 0.91 per 1-point increase; p = 0.044), while higher SOFA score increased risk (HR 1.14 per 1-point increase; p = 0.014).
conclusionsReducing GRV monitoring to once daily did not increase the incidence of feeding intolerance. RELEVANCE TO CLINICAL PRACTICE: The findings of this study support critical care nurses in reducing gastric residual volume monitoring to once daily, as this does not increase the incidence of feeding intolerance. However, attention should be paid to patients at higher risk of feeding intolerance.
trial registrationThis study was registered in the Chinese Clinical Trial Registry (Registration number: ChiCTR2000038245).
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