Anaotmical variability in the position of cystic artery and its affect on surgical approach during laparoscopic cholecystectomy
Abstract Background: The laparoscopic view of extrahepatic biliary tract and cystic artery is different anatomically from open approach. Consequently iatrogenic injuries due to inadverent damage to cystic artery are not uncommon. These complications can be prevented by careful dissection in Calots triangle and better knowledge of laparoscopic anatomy of cystic artery and its variations. The aim of this study is to establish the prevalence of variation in position of cystic artery in relation to cystic duct in Asia’s largest slum area. This will help identify the safe area for dissecting peritoneum in Calots triangle and thus help young surgeons overcome the long learning curve associated with laparoscopy.Methods: During a 2 year period from 2018-2019, 192 laparoscopic cholecystectomies that were performed at a tertiary care hospital were studied. Patients above the age of 70 years, pregnant females, patients with history of previous abdominal surgery and the cases of conversion from laparoscopic to open cholecystectomy were excluded from the study. Cystic artery was divided into four groups based on its relative position to cystic duct. It includes superomedial, superolateral, anterior and absent cystic artery relative to the cystic duct.Results: Out of 192 cases of laparoscopic cholecystectomy 174 (90.62%) patients had cystic artery superomedial to cystic duct and 10 (5.208%) had a cystic artery at superolateral position to cystic duct. In 5 (2.6%) patients it was found anterior to cystic duct and in 3 (1.56%) patients it was absent.Conclusions: As the least common position of cystic artery was found to be anterior to cystic duct in our study, it is concluded that blind dissection from anterior side is the safest approach to avoid injury to cystic artery. This technique can help young surgeons overcome the long learning curve associated with laparoscopy.