ORIGINAL ARTICLE
Year : 2011  |  Volume : 5  |  Issue : 2  |  Page : 167-169

Perioperative risk factors for prolonged mechanical ventilation and tracheostomy in women undergoing coronary artery bypass graft with cardiopulmonary bypass


1 Department of Cardiac Anesthesiology, Shahid Rajaei Heart Center, Tehran, Iran
2 Department of Anesthesiology, Tabriz University of Medical Sciences, Tabriz, Iran
3 Department of Cardiac Anesthesiology, Anesthesiology Research Center, Shahid Beheshti University of Medicine, Tehran, Iran

Correspondence Address:
Ali Dabbagh
Department of Cardiac Anesthesiology, Anesthesiology Research Center, Shahid Beheshti University of Medicine, Tehran
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1658-354X.82786

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Background: Prolonged mechanical ventilation is an important recognized complication occurring during cardiovascular surgery procedures. This study was done to assess the perioperative risk factors related to postoperative pulmonary complications and tracheostomy in women undergoing coronary artery bypass graft with cardiopulmonary bypass. Methods: It was a retrospective study on 5,497 patients, including 31 patients with prolonged ventilatory support and 5,466 patients without it; from the latter group, 350 patients with normal condition (extubated in 6-8 hours without any complication) were selected randomly. Possible perioperative risk factors were compared between the two groups using a binary logistic regression model. Results: Among the 5,497 women undergoing coronary artery bypass graft (CABG), 31 women needed prolonged mechanical ventilation (PMV), and 15 underwent tracheostomy. After logistic regression, 7 factors were determined as being independent perioperative risk factors for PMV. Discussion: Age ≥70 years old, left ventricular ejection fraction (LVEF) ≤30%, preexisting respiratory or renal disease, emergency or re-do operation and use of preoperative inotropic agents are the main risk factors determined in this study on women undergoing CABG.


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