Prospective Study
Copyright ©The Author(s) 2016. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Cardiol. Nov 26, 2016; 8(11): 676-683
Published online Nov 26, 2016. doi: 10.4330/wjc.v8.i11.676
Outcomes and long-term survival of coronary artery surgery: The controversial role of opium as risk marker
Mahdi Najafi, Leila Jahangiry, Seyedeh Hamideh Mortazavi, Arash Jalali, Abbasali Karimi, Ali Bozorgi
Mahdi Najafi, Department of Anesthesiology, Tehran Heart Center, Tehran University of Medical Sciences, Tehran 1411713138, Iran
Mahdi Najafi, Seyedeh Hamideh Mortazavi, Arash Jalali, Department of Research, Tehran Heart Center, Tehran University of Medical Sciences, Tehran 1411713138, Iran
Leila Jahangiry, Department of Health Education and Promotion, School of Public Health, Tabriz University of Medical Sciences, Tabriz 5165665931, Iran
Abbasali Karimi, Department of Cardiothoracic Surgery, Tehran Heart Center, Tehran University of Medical Sciences, Tehran 1411713138, Iran
Ali Bozorgi, Department of Cardiology, Tehran Heart Center, Tehran University of Medical Sciences, Tehran 1411713138, Iran
Author contributions: Najafi M designed the study; Najafi M, Jahangiry L, Karimi A, Bozorgi A performed the research; Mortazavi SH and Jalali A analysed the data; Najafi M and Mortazavi SH wrote the paper; Najafi M revised the manuscript for final submission.
Institutional review board statement: The study was reviewed and approved by the Tehran Heart Center Institutional Review Board.
Informed consent statement: All study participants, or their legal guardian, provided informed written consent prior to study enrollment.
Conflict-of-interest statement: The authors declare no conflict-of-interest.
Data sharing statement: No additional data are available.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Mahdi Najafi, MD, Associate Professor, Department of Anesthesiology, Tehran Heart Center, Tehran University of Medical Sciences, North Kargar Street, Tehran 1411713138, Iran. najafik@sina.tums.ac.ir
Telephone: +98-21-88029674 Fax: +98-21-88029731
Received: June 14, 2016
Peer-review started: June 17, 2016
First decision: July 27, 2016
Revised: August 16, 2016
Accepted: September 7, 2016
Article in press: September 8, 2016
Published online: November 26, 2016
Core Tip

Core tip: A significant percentage of coronary artery disease patients undergo cardiac surgery so defining outcome predictors is essential for risk calculation and is necessary for estimation of resource utilization and provision of services. Employing global knowledge on this issue is not justified without adjustment for regional specifications and needs. This study aimed at clarifying the role of opium addiction in predicting long-term mortality of coronary artery bypass graft surgery in addition to advanced age, low ejection fraction, diabetes mellitus and cerebrovascular accident.