Effects and risk factors of different gastric residual volume on the full feeding rate of enteral nutrition patients in ICU
Objective To compare the difference of the full feeding rate in ICU patients with different gastric re-sidual volume(GRV)of continuous enteral nutrition,and to analyze the related factors affecting the full feeding rate.Methods The data of 518 patients with continuous enteral nutrition admitted to the ICU of Shanghai First People's Hospital from January 2021 to May 2022 were retrospectively analyzed,and were divided into groups according to the different gastric residual volume on the 7th day after admission to ICU,of which 57 patients with gastric residual volume ≥200 mL were taken as the standard group,and 461 patients with gastric residual volume<200 mL were selected as the non-standard group.The full feeding rate of 2 groups on the 7th day after admission to ICU was com-pared,and logistic regression model was used to analyze the related factors affecting the full feeding rate.Results The feeding standard rate of the standard group was 14.0%(8/57),which was significantly lower than that of the non-standard group(27.1%,125/461),and the difference was statistically significant(x2=4.548,P=0.039).The mult-ivariate logistic regression model showed that the risk factors affecting the full feeding were overweight(OR=0.496,P<0.001,95%CI was from 0.317 to 0.775),obesity(OR=0.351,P=0.020,95%CI was from 0.145 to 0.851),and sequential organ failure score(OR=0.931,P=0.023,95%CI was from 0.876 to 0.990),while the protective factors were underweight(OR=2.462,P=0.005,95%CI was from 1.315 to 4.609)and mechanical ventilation(OR=2.092,P=0.002,95%CI was from 1.279 to 3.421).Conclusion Although the full feeding rate of ICU patients with residual volume≥200 mL is lower than that of patients with gastric residual volume<200 mL,and gastric residual volume≥200 mL is not an independent risk factor of full feeding,while overweight,obesity,and higher sequential organ failure score will affect the full feeding rate of ICU patients.
intensive care unitsgastric residual volumefeeding standardinfluencing factors