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TITLE:

RATE OF OCCURRENCE OF POST-OPERATIVE PULMONARY COMPLICATIONS AFTER CORONARY BYPASS SURGERY

AUTHORS:

Dr Muhammad Tayyab Farid, Dr Ahsan Riaz, Dr Muhammad Sajid

ABSTRACT:

Objective: This research work carried out to find out the rate of occurrence and risk factors of pulmonary complications after the surgical intervention for CB (Cardiopulmonary Bypass) and its correlation with the before surgery and intra-operative factors of risks. Methodology: This research work was an analysis based on observations of 517 patients who had to experience cardio-pulmonary bypass surgery. We noted the rate of occurrence of Post-Operative Pulmonary Complications and their risk factors. We applied the logistic regression for the determination of the correlation of before surgery and intra-operative factors of risks with the prevalence of Post-Operative Pulmonary Complications. Results: There was occurrence of Post-Operative Pulmonary Complications in 6.20% (n: 32) patients. The most frequent pulmonary complication after the surgical intervention was atelectasis that was present in 3.86% (n: 20) patients, followed by failure of respiratory system in 1.54% (n: 8) patients, pneumonia was present in 0.58% (n: 3) patients & ARDS (Acute Respiratory Distress Syndrome) in .19% (n: 1) patients. The most important risk factors of these complications was elder age equal or greater than 60 years of age, long duration of CPB with greater than two hours, pre-operative pulmonary HTN (Hypertension) and intra-operative injury of phrenic nerve. The rate of mortality was 9.40% among the patients present with the Post-Operative Pulmonary Complications & this rate was only 1% among patients with no Post-Operative Pulmonary Complications. Conclusion: The rate of prevalence of the Post-Operative Pulmonary Complications was 6.20% in this current research work. Elder age, long duration of CPB, pre-operative HTN and intra-operative phrenic nerve injury are the most important factors of risk for the post-operative pulmonary complications after surgical intervention. Keywords: Post-Operative Pulmonary Complications, Pulmonary, Mortality, Bypass, Pneumonia.

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