Background: Emergence from anesthesia is the critical period. This early emergence period isrnubiquitous with potential complications. In order to enable early detection and promptrntreatment of these potential complications by the practitioner, there needs to be an effectivernsystem of detection and reporting of all adverse events occurring during the period ofrnemergence.rnA wide spectrum of critical incidents occur in the PACU, many of which are related to therncardiovascular and respiratory systems. Critical incidents have a major impact on healthcarernutilization and result in prolonged PACU stays and higher levels of postoperative care thanrninitially anticipated. Events occurring during the PACU period continue to be a source of patientrnmorbidity. The overall incidence of complications occurring during the post anesthesia care unitrnstay may be higher than previously expected.rnObjectives: To investigate the incidence of postoperative complications among patientsrnadmitted to the PACU at the major operation room in TASH. And to identify factors that arernassociated with the complications and to propose an instrument that addresses therncomplications, risks and individualized interventions.rn11rnMethodology: After approval from the university, institutional based prospectiverncross-sectional study was conducted from June 14- July 29, 2017 to investigate the incidence ofrncomplications in all patients admitted to PACU who had surgery (elective and emergency)rnunder general anaesthesia (GA), Monitored Anaesthesia Care (MAC), Regional Anaesthesiarn(RA). Data was collected using survey data sheet (a standardised data collection form), which isrna three page check-box form and was analyzed using Statistical Package for Social Sciences,rnversion 21.rnResults: During the study period 312 patients were admitted to the PACU of the major OR.rnTotal number of patients who had complications in the PACU was 65 (20.83%). The type ofrncomplications is characteristically of respiratory system in the first place (35.4%); followed byrncardiovascular system complications (21.1%), and PONV (13.8%) which comes third on the list.rnOf all the studied variables only the presence of pre-existing co-morbidity and duration of thernsurgery had significant association with the incidence of complications. But none of the 65rnpatients who had complications was found having any significant correlation to: Age (P=0.714),rnSex (P=0.717), Urgency of procedure (P=0.472), Type of surgery (P=0.887), Type of anesthesiarn(P=0.150), Attending anesthesia provider (P=0.378) and Position during surgery (P=0.370)rnConclusion and recommendation: The presence of pre-existing co-morbidity and the longer thernduration of the surgery, the higher the incidence of the post-op complication will be.rnThere was a very small number of patients in the study, I believe that inclusion of more patientsrnand different surgical specialties such as Obstetrics and orthopedic surgeries would havernchanged the results in terms of kind and percentage of complications. I recommend that arnprospective follow-up trial be undertaken in large number of patients, with data on criticalrnincidents being collected by clinicians, to strengthen the findings of this study.