[Value of indocyanine green fluorescence tracer in laparoscopic cholecystectomy for acute cholecystitis]

Objective: To explore the value of low-dose indocyanine green (ICG) fluorescence imaging in laparoscopic cholecystectomy (LC) for acute cholecystitis. Methods: Clinical data of 198 patients with acute cholecystitis and had received LC in Changzhou No.2 People's Hospital from January 2020 to September 2021 were collected. In the fluorescence group (n=97), peripheral intravenous injection of ICG was performed 15 minutes before LC, while conventional white light was applied in the control group (n=101). The efficiency of bile duct discrimination, operation time, intraoperative bleeding and postoperative complications were compared between the two groups. Results: Of the 198 patients, 86 were males and 112 females. The differences were not statisticly significant in age [52 (44, 63) vs 56 (46, 68) years, P>0.05], history of chronic inflammation [34(35.1%) vs 31(30.7%) cases, P>0.05] and other clinical baseline data between the two groups. Compared with the control group, the fluorescence group had higher efficiency of bile duct identification [18 (16,19) vs 38 (28,55) min,P<0.001], shorter operation time [45 (40,60) vs 80 (65,100) min,P<0.001], less intraoperative bleeding [10 (5,15) vs 60 (20,100) ml,P<0.001], and less postoperative liver function damage [alanine aminotransferase 35.0 (23.4,51.0) vs 98.3 (67.0,134.8)U/L,P<0.001]. In the control group, there was one case of biliary duct injury during operation, one case of postoperative biliary fistula, and one case of postoperative hemorrhage. No similar adverse event was found in fluorescence group. Conclusions: ICG fluorescence imaging can improve the efficiency of LC for patients with acute cholecystitis. It is easy to operate and has a good clinical application value.