Peritoneal fluid indocyanine green test for diagnosis of gut leakage in anastomotic leakage rats and colorectal surgery patients  

作　　者：Yu Huang Tian-Yang Li Jie-Feng Weng Hui Liu Yu-Jie Xu Shuai Zhang Wei-Li Gu 

机构地区：[1]Department of Surgery,Guangzhou First People's Hospital,Guangzhou 510180,Guangdong Province,China

出　　处：《World Journal of Gastrointestinal Surgery》2024年第6期1825-1834,共10页世界胃肠外科杂志（英文版）（电子版）

基　　金：Supported by the Science and Technology Projects in Guangzhou,No.202201010623 and No.2024A03J1016;Guangzhou Science and Technology Project of Traditional Chinese Medicine and Combined Chinese and Western Medicine,No.20242A011001;Guangdong Medical Science and Research Foundation,No.A2024088.

摘　　要：BACKGROUND Application of indocyanine green(ICG)fluorescence has led to new developments in gastrointestinal surgery.However,little is known about the use of ICG for the diagnosis of postoperative gut leakage(GL).In addition,there is a lack of rapid and intuitive methods to definitively diagnose postoperative GL.AIM To investigate the effect of ICG in the diagnosis of anastomotic leakage in a surgical rat GL model and evaluate its diagnostic value in colorectal surgery patients.METHODS Sixteen rats were divided into two groups:GL group(n=8)and sham group(n=8).Approximately 0.5 mL of ICG(2.5 mg/mL)was intravenously injected postoperatively.The peritoneal fluid was collected for the fluorescence test at 24 and 48 h.Six patients with rectal cancer who had undergone laparoscopic rectal cancer resection plus enterostomies were injected with 10 mL of ICG(2.5 mg/mL)on postoperative day 1.Their ostomy fluids were collected 24 h after ICG injection to identify the possibility of the ICG excreting from the peripheral veins to the enterostomy stoma.Participants who had undergone colectomy or rectal cancer resection were enrolled in the diagnostic test.The peritoneal fluids from drainage were collected 24 h after ICG injection.The ICG fluorescence test was conducted using OptoMedic endoscopy along with a near-infrared fluorescent imaging system.RESULTS The peritoneal fluids from the GL group showed ICG-dependent green fluorescence in contrast to the sham group.Six samples of ostomy fluids showed green fluorescence,indicating the possibility of ICG excreting from the peripheral veins to the enterostomy stoma in patients.The peritoneal fluid ICG test exhibited a sensitivity of 100%and a specificity of 83.3%for the diagnosis of GL.The positive predictive value was 71.4%,while the negative predictive value was 100%.The likelihood ratios were 6.0 for a positive test result and 0 for a negative result.CONCLUSION The postoperative ICG test in a drainage tube is a valuable and simple technique for the diagnosis of GL.Hence,it should

关 键 词：Gut leakage Indocyanine green Anastomotic leakage model Diagnostic test Diagnostic technique 

分 类 号：R656[医药卫生—外科学]