Abstract:Objective To investigate the nutritional risk of patients with coronary artery bypass grafting (CABG) and the effect of early nutritional support on the prognosis of patients with nutritional risk. Methods A total of 1 286 patients with CABG who received treatment from June 2014 to June 2018 were selected and received nutritional risk screening according to NRS2002. The patients with nutritional risk were randomly divided into control group (without nutritional support) and experiment group (with nutritional support). The total protein (TP), albumin (ALB), prealbumin (PAB), transferrin (TRF), complications and hospital stay were compared between the two groups. Results There were 714 (55.5%) patients with nutritional risk (NRS ≥ 3), among which 22 (1.7%) were malnutrition, and patients were divided into control group (357 cases) and experimental group (357 cases). The PAB and TRF in the experimental group were significantly higher than those in the control group on the 5th and 7th day after operation (P<0.05). TP and ALB were significantly higher than those in the control group on the 7th day after operation (P<0.05). The postoperative complications in the experimental group were less than those in the control group, and the postoperative hospital stay was shorter than that in the control group (all P<0.05). Conclusion The proportion of patients with nutritional risk in CABG is high. Early postoperative nutritional support for patients with nutritional risk can improve nutritional indicators, reduce complications and shorten postoperative hospital stay.