Abstract: Objective To evaluate the perioperative nutritional risk of children with congenital heart disease （CHD） and to analyze its influencing factors. Methods Children with CHD who underwent surgery in Hainan Women and Chidren's Medical Center from January 2018 to January 2022 were selected and their data of medical history were collected. The perioperative nutritional risk assessment was completed using STRONGkid. Univariate and multivariate analysis were done to analyze the related factors affecting the perioperative nutritional risk of children with CHD. Results A total of 1 006 children with CHD completed perioperative nutritional risk assessment. The STRONGkid evaluation results showed that the incidence of perioperative medium-high nutritional risk in children with CHD was 43.94%. The results of multivariate Logistic regression analysis showed that gestational age <37 weeks （OR=3.706）, average monthly family income <5 000 yuan （OR=2.875）, pulmonary hypertension （OR=2.892）, heart failure （OR=3.216）, complex diseases （OR=1.881）, prealbumin<250 mg/L （OR=1.990）, 25-（OH）D<30 nmol/L （OR=1.611） were the risk factors for perioperative nutritional risk in children with CHD. Conclusions Attention should be paid to perioperative nutritional risk of children with CHD. Gestational age, family economic status, pulmonary hypertension, heart failure, and complex diseases are the possible influencing factors of perioperative nutritional risk in children with CHD.

Key words: Congenital heart disease, Children, Perioperative period, Nutritional risk, Influencing factor