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Year : 2016  |  Volume : 44  |  Issue : 2  |  Page : 58-63

Influence of severity of obstructive sleep apnea on postoperative pulmonary complications in patients undergoing gastroplasty

Department of Anesthesia and Surgical Intensive care, Faculty of Medicine, Tanta University, Tanta, Egypt

Correspondence Address:
Rehab S EL-kalla
Department of Anesthesia and Surgical Intensive care, Faculty of Medicine, Tanta University, EL Gheish street, Tanta 31257
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DOI: 10.4103/1110-1415.189347

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Introduction Obstructive sleep apnea (OSA) is a common comorbidity in morbid obese patients scheduled for gastroplasty. The objective of our study was to determine the relationship between postoperative pulmonary complications and the severity of OSA in patients undergoing gastroplasty, who were evaluated preoperatively by using polysomnography. Methods All patients with BMI greater than or equal to 50 kg∕m2 were selected and referred to the sleep lab to detect OSA. Patients with apnea hypopnea index (AHI) less than 16 were excluded. Patients with AHI greater than or equal to 16 were divided into two groups according to the severity of AHI: patients with AHI in the range 16–30 were classified as having moderate OSA (group I) and patients with AHI greater than 30 were classified as having severe OSA (group II). In total, 40 patients were divided into two equal groups. Pulmonary complications in the first 24 h were analyzed according to the AHI. Results Overall, 15% patients of group I and 25% of group II received preoperative continuous positive airway pressure therapy, and postoperatively, all patients were closely monitored either in the Postanesthetic Care Unit or in the ICU. The rate of incidence of the postoperative pulmonary complications was not increased with increased the severity of OSA. Conclusion In obese patients with OSA, the severity of which was assessed by using the AHI, the incidence of postoperative pulmonary complications did not increase with increased severity of OSA. Appropriate preoperative evaluation and preparation with meticulous perioperative monitoring lead to a decrease in pulmonary complications, despite the severity of OSA.

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