Background: Studies on post operative pulmonary complications are few and far for our country and our region in spite of them conferring significant morbidity and mortality to our patients as well as imposing a significant burden on our already fragile healthcare systems. Aim: This study was undertaken with the aim of determining the incidence risk and mortality associated with post operative pulmonary complications in our region using the ARISCAT score. Methods: Over the course of one year, ARISCAT score was calculated for 400 patients posted for surgery. Preoperative clinical parameters and postoperative complications were recorded. Following data collection, a thorough clinical examination of the respiratory system, cardiovascular system, nervous system, and abdomen was performed. Data was analysed using SPSS V21. Binary logistic regression was used to calculate odds ratio. ROC Curve and diagnostic accuracy test was used for calculation of sensitivity and specificity, PPV, NPV and accuracy. Results: 12.3% of the patients developed post operative pulmonary complications. The PPV of the ARISCAT score was found to be 45.21%, the NPV 95.11%, sensitivity 67.35% and specificity 88.60%. There was a statistically significant 9.117 times higher chance (p<0.001) of developing PPC in those at belonging to intermediate risk group and 48.262 times higher chance (p<0.001) in those belonging to high-risk group as compared to low-risk group. For the ARISCAT score, in our study, a score of 33.5 was the optimal cut-off to detect post operative pulmonary complications with a sensitivity of 85.71% and specificity of 76.07%. 26.5% of patients developing a PPC died. 113 times higher risk (p<0.001) of death was observed for those who were with PPC as compared to without PPC patients. Most common type of post operative pulmonary complication developed was respiratory infection (30.6%), followed by pulmonary oedema (20.4%). Conclusion: Patients who were found to be at a higher risk of developing post operative pulmonary complications as per the ARISCAT score developed them more frequently as compared to the ones who were found to be at a lower risk.