Objective To evaluate the effectiveness of enhanced recovery after surgery （ERAS） in the perioperative
nutritional management of patients with dentofacial malformations. Methods Retrospective analysis of personal basic
information， general clinical data， and nutritional indexes of orthognathic surgery patients who underwent orthognathic
surgery from July 2023 to December 2023 was performed. A total of 79 patients who accepted ERAS interventions were
selected， and 79 non-ERAS patients were matched using propensity score matching. Propensity score matching was used to
control confounders，t-test，χ2
test and multifactorial analyses were used to assess the effects of ERAS measures on
postoperative nutritional status indicators in orthognathic patients. Results After propensity score matching， no statistical
difference was found in general data （P>0.05）.The median age of the patients was 23（21，28） years old. Female patients
accounted for a higher proportion （63.3%）.Among the reasons for seeking medical treatment， the proportion of patients
seeking medical treatment only for functional reasons and only for facial reasons was 1∶7.7. And 95.6% of the patients had a
college degree or higher. Less than 10% of patients had both underlying diseases and medication history. The results of
perioperative nutritional risk screening showed that 19% of patients were at nutritional risk preoperatively and 27.8% were at
nutritional risk postoperatively. The postoperative weight loss of patients was （1.40±2.02） kg. Statistical analysis of the
postoperative nutritional status indicators in the ERAS and non-ERAS groups showed significant differences in the
postoperative laboratory indexes （hemoglobin value）， food-intake on the day of surgery， food-intake on the first day after
surgery， food-intake on the second day after surgery， and the total food-intake in the postoperative period （P<0.05）
.Multiple regression analysis showed that gender and the reason for the surgery were the factors influencing the hemoglobin
value on the first postoperative day. Conclusion Postoperative nutritional risk is increased in orthognathic patients， and
ERAS can improve some postoperative nutrition-related indexes in patients.
