Ninety Days and In-Hospital Mortality after Gastrointestinal and Hepatopancreatic Biliary Surgery- A Case Series Analysis.

Abstract Aim: The aim was to do a retrospective analysis and audit of our 90 days and in-hospital mortality after gastrointestinal and hepatopancreatic biliary surgery performed in our department and analyze factors predicting it.Patients and methods:All patients who underwent gastrointestinal and hepatopancreatic biliary surgery in our department in the last 3 years were evaluated for 90 days postoperative and in-hospital mortality and various factors affecting it. Categorical values were analyzed using the chi-square test or fisher's exact test wherever appropriate. Continuous variables were analyzed using the student t-test for parametric data and Mann Whitney U test for nonparametric data after skewness and kurtosis analysis. Multivariate analysis was done using logistic regression analysis. A p-value less than 0.05 was considered statistically significant. Statistical analysis was done using SPSS version 23(IBM). Results: 412 patients underwent gastrointestinal and hepatobiliary surgery in the last 3 years at our institute. Ninety days all-cause mortality was 5.8%, all-cause in-hospital mortality was around 4.6%. 90 days mortality in elective and emergency surgeries were respectively 3.2% and 18%. In-hospital mortality in elective and emergency surgeries were respectively 2.35% and 15.2%. On multivariate analysis age, nontechnical complications, open surgery, and emergency surgery independently predicted 90 days mortality. On multivariate analysis age, acute kidney injury, non-procedural complications, and emergency surgeries independently predicted in-hospital mortalities. Conclusion: Age, non-technical complications, open surgery, and emergency surgeries are independently associated with 90 days mortality, and age, acute kidney injury, non-procedural complications, and emergency surgery independently predict in-hospital mortality.