Comparative analysis of perioperative morbidity at a tertiary cancer care center in the pre and post COVID era – has the tide changed?

All patient that underwent any surgical intervention under regional or general anaesthesia during the study period will be included and divided into two groups Pre-COVID and Post-COVID, depending upon whether the intervention was done prior to or after the occurrence of COVID pandemic in India. Data analysis will include demographic details, diagnosis, associated co-morbidities, intervention performed, date of intervention, date of discharge, intra-op, and post-operative complications graded according to the modified Calvien-Dindo classification