Non surgical procedure related postoperative Complications independently predicts perioperative mortality, in gastrointestinal and Hpb surgeries.- A retrospective Analysis of prospectively maintained data

Aim The Aim of the study was to evaluate relationship between non surgical procedure related complication and 30 days mortality. Material and Methods All gastrointestinal and hepatobiliary procedures performed in last 3 years have been evaluated retrospectively. Non surgical procedure related postoperative complications were defined as perioperative complications non related to surgical procedures or techniques and related to patients’ physiological health or comorbidities (e.g acute kidney injury, ARDS, acute respiratory failure, pre existing sepsis, etc.), Surgical related complications were defined as perioperative complications related to surgical procedures or techniques (e.g. bleeding, leaks, sepsis due to leaks etc.). Factors affecting 30 days mortality and morbidity were analysed using univariate and multivariate analysis. Chi square test was used for categorical values, Mann Whitney U test was used for numerical values. Multivariate logistic regression analysis was used for multivariate analysis. Statistical analysis was used suing SPSS version 21. Results Total 325 major hepatobiliary and pancreatic surgery was done in our institute in last 2 years. 30 days overall mortality rate was 6.4%. In univariate analysis mortality was significantly associated with nonsurgical procedure related complications. (p < 0.0001). Surgical complications were not associated with mortality. On univariate analysis other factors associated with mortality were emergency surgeries, high CDC grade of surgery, higher ASA grades, increase operative duration, increased blood product requirements. However on multivariate analysis only nonsurgical procedure related postoperative complications independently predicted mortality. (p=0.001). Conclusions Non surgical procedure related post operative complications (Physiological) is strongly associated with 30 days mortality, suggesting improved perioperative care can help to reduce post operative mortality.