Postoperative outcomes of oncology patients undergoing radical visceral resections - a multi-centric observational study (RaVisRO study).

Onco-surgical procedures involving radical visceral resections often pose major challenges to the intensive care physicians and surgeons during the postoperative period. The higher morbidity and mortality rates noted are not only due to the complex nature of these surgical procedures, but also due to the postoperative stormy course that involves major fluid shifts, major blood loss, multiple blood transfusions, dyselectrolytemias, sepsis, anastomotic leaks, major adverse cardiac events, pulmonary complications and re-admission to intensive care unit (ICU). Various factors such as age, body mass index (BMI), American Society of Anesthesiologists (ASA) grade, pre-operative albumin levels, stage of cancer, surgical complexity, frailty status, duration of surgery, intraoperative blood loss, transfusion of blood products and cumulative fluid balance predict the occurrence of postoperative complications. The higher incidence of overall and severe complications (i.e., higher comprehensive complication index or CCI) noted in these patients especially during the immediate postoperative period can lead to increased length of stay (LOS) in the ICU and in the hospital, higher ICU re-admission rate, increased re-intubation rate and higher mortality rates. A thorough knowledge of these morbidity predictors, postoperative complications and outcomes can help in anticipation, prevention, early detection and timely management of these complexities. We, therefore intend to conduct a study to observe the outcomes following oncological surgeries that involve radical visceral resections.