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  • Title: Combined vascular and biliary fluorescence imaging in laparoscopic cholecystectomy.
    Author: Schols RM, Bouvy ND, van Dam RM, Masclee AA, Dejong CH, Stassen LP.
    Journal: Surg Endosc; 2013 Dec; 27(12):4511-7. PubMed ID: 23877766.
    Abstract:
    BACKGROUND: Bile duct injury in patients undergoing laparoscopic cholecystectomy is a rare but serious complication. Concomitant vascular injury worsens the outcome of bile duct injury repair. Near-infrared fluorescence imaging using indocyanine green (ICG) is a promising, innovative, and noninvasive method for the intraoperative identification of biliary and vascular anatomy during cholecystectomy. This study assessed the practical application of combined vascular and biliary fluorescence imaging in laparoscopic gallbladder surgery for early biliary tract delineation and arterial anatomy confirmation. METHODS: Patients undergoing elective laparoscopic cholecystectomy were enrolled in this prospective, single-institutional study. To delineate the major bile ducts and arteries, a dedicated laparoscope, offering both conventional and fluorescence imaging, was used. ICG (2.5 mg) was administered intravenously immediately after induction of anesthesia and in half of the patients repeated at establishment of critical view of safety for concomitant arterial imaging. During dissection of the base of the gallbladder and the cystic duct, the extrahepatic bile ducts were visualized. Intraoperative recognition of the biliary structures was registered at set time points, as well as visualization of the cystic artery after repeat ICG administration. RESULTS: Thirty patients were included. ICG was visible in the liver and bile ducts within 20 minutes after injection and remained up to approximately 2 h, using the ICG-filter of the laparoscope. In most cases, the common bile duct (83%) and cystic duct (97%) could be identified significantly earlier than with conventional camera mode. In 13 of 15 patients (87%), confirmation of the cystic artery was obtained successfully after repeat ICG injection. No per- or postoperative complications occurred as a consequence of ICG use. CONCLUSION: Biliary and vascular fluorescence imaging in laparoscopic cholecystectomy is easily applicable in clinical practice, can be helpful for earlier visualization of the biliary tree, and is useful for the confirmation of the arterial anatomy.
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