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ORIGINAL ARTICLE
Year : 2019  |  Volume : 8  |  Issue : 2  |  Page : 96-101

Perioperative factors influencing the incidence of postoperative pulmonary complications in patients undergoing head-and-neck versus abdominal surgeries and their outcome


Department of Anaesthesiology and Critical Care, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India

Correspondence Address:
Dr. Sunil Rajan
Department of Anaesthesiology, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham, Kochi, Kerala
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijrc.ijrc_53_18

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Background: Postoperative pulmonary complications(PPCs) are frequent causes for adverse outcomes after major surgeries. Aim: The aim of this study was to compare the perioperative factors influencing the incidence of PPCs in two groups of patients undergoing prolonged major surgeries, namely head-and-neck versus abdominal surgeries, receiving postoperative ventilation. Patients and Methods: This prospective observational study was designed, and the necessary data were collected from consecutive patients fulfilling all criteria in a single center between August 2017 and March 2018. Correlation of PPCs with duration of surgery, perioperative mechanical ventilation(PMV), and volume of crystalloids used in both the groups was analyzed by multiple binary logistic regression. The inhospital mortality and number of days of intensive care unit(ICU) and hospital stay were analyzed with Student's t-test. Results: A total of 155patients were studied in which 77patients who underwent head-and-neck surgeries(Group1) and 78 who underwent abdominal surgeries(Group2). Both the groups had a comparable demographic profile. Group2patients had a higher incidence of PPCs. Duration of PMV but not of surgery influenced the occurrence of PPCs independently, showing 8.2%(1.2%–15.7%) increase in PPCs with every hour increase in PMV(odds ratio: 1.08[95% confidence interval, 1.01–1.16] with P =0.002). PPCs prolonged the ICU and hospital stays and mortality. Conclusion: Duration of PMV is an independent risk factor for the development of PPCs. Abdominal surgeries proved to be an independent risk factor for PPCs. Early identification and risk modifications are required to reduce PPCs in high-risk category of patients who receive general anesthesia with prolonged mechanical ventilation.


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