The main purpose of this study is to utilize operative grading scale to predict conversion to open,complication and reintervention and validate Nassar Scale.

Laparoscopic cholecystectomy is the commonly performed procedure in our institute. Laparosopic cholecystectomy is high variable surgery ranging from simple routine operation to difficult surgery leading to increased morbidity and mortality. The majority of previous scores use a combination of pre-operative and operative data and were produced in studies that were limited by retrospective data, small sample sizes and lack of external validation.

Very few intraoperative difficulty grading scale was published and none are widely used in clinical practice. So operative grading scale will have advantages of assisting in intra-operative strategy and planning, allowing comparison across different research studies, facilitating risk adjustment for surgical outcomes and providing an aid in training surgeons and monitoring of training progression.

The main purpose of this study is to utilize operative grading scale to predict conversion to open,complication and reintervention.

Inclusion Criteria:

• All patients undergoing laparoscopic cholecystectomy

Exclusion Criteria:

• CBD Stone
• Malignancy of Extrahepatic biliary tree
• Cholecystectomy as a part of other surgery

Hospital patients