Objective To evaluate the effectiveness of ultrasound assessing the risk of gastric con-tent aspiration in patients undergoing emergency abdominal surgery.Methods This was a prospective self-control study.Seventy-three American Society of Anesthesiologists Physical Status classification Ⅰ-Ⅲ pa-tients,aged＞18 yr,who underwent emergency abdominal surgery in Beijing Daxing District People's Hos-pital from June 2022 to December 2023,were selected.Time method assessment:The time and category of fasting and no-drinking were inquired,the patient's gastric emptying status and risk of gastric content aspi-ration were assessed based on the time of fasting and no-drinking,and a preliminary anesthesia plan was for-mulated.Ultrasound method assessment:The properties of gastric contents were determined,the cross-sec-tional area of the gastric antrum was measured,the volume of gastric fluid was estimated,the Perlas grading of the gastric antrum was performed to assess the risk of gastric content aspiration,and a final anesthesia plan for implementation was formulated.Results The number of patients with a high-risk of gastric content aspiration determined by the time method and ultrasound method was 2 cases(3％ )and 11 cases(15％ ),respectively,with a statistically significant difference between the two methods(P＜0.05).The risk class of gastric content aspiration changed after ultrasound examination in 11 patients.One patient with a high risk determined by the time method was identified as having a low risk by the ultrasound method,and the other 10 patients with a low risk determined by the time method were identified as having a high risk by the ultra-sound method.There was a statistically significant difference in the anesthesia induction plans formulated based on two methods(P＜0.05),while there was no statistically significant difference in the airway mainte-nance plans between the two methods(P＞0.05).Regurgitation of gastric contents occurred only in one case(1.4％ ),and no gastric content aspiration was found in any case.Conclusions Preoperative gastric ultra-sound examination can be used to assess the risk of gastric content aspiration and guide the formulation of anesthesia plans for the patients undergoing emergency abdominal surgery.
万方数据