Document Type : Original Article
Authors
- Jamshid Abedi 1
- Mohammad Ebrahim Ghafari 2
- Jalal Kheirkhah 3
- Hassan Moladoust 4
- Mohammad Reza Aghajankhah 5
1 MD, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
2 Assistant Professor, Department of Epidemiology and Biostatistics, Faculty of Health, Qom University of Medical Sciences, Qom, Iran
3 Professor, Department of Cardiology, Healthy Heart Research Center, Heshmat Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
4 Professor, Department of Biochemistry and Medical Physics, Healthy Heart Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
5 Assistant Professor, Department of Cardiology, Healthy Heart Research Center, Heshmat Hospital, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
Abstract
BACKGROUND: With the increase in the number of coronary artery bypass grafting (CABG) surgeries, the concern about complications after it has also increased. RV diastolic dysfunction (RVDD) is one of the Post-CABG complications, and in this study we intend to investigate its frequency and predictors.
METHODS: In this cross-sectional study, eighty CABG candidate adult patients were included in the study. History of previous heart surgery or arrhythmia were the main exclusion criteria. After recording of demographic and clinical information, the day before the surgery and seven days later, echocardiography of the right ventricle (RV) was performed. The functional parameters were obtained according to Guidelines for the Echocardiographic Assessment of the Right Heart in Adults.
RESULTS: Eighty patients with an average age of 60.25+8.93 years participated in the study. Most patients were male (72.5%). Thirteen patients had RVDD before CABG (30.8% grade-I and 69.2% grade-II). All these 13 patients had RVDD Grade-II after surgery (P=0.046). Among 67 patients with normal RV function before CABG, RV function was normal in only 20 patients (29.9%) after CABG. While the incidence of grade-I and grade-II Post-CABG RVDD (Post-coronary artery bypass grafting right ventricle diastolic dysfunction) was 11.9% and 58.2%, respectively (P<0.001).Univariate logistic regression analysis showed that there was no association between pre-CABG variables, neither demographic nor echocardiographic, and the occurrence of RVDD after CABG.
CONCLUSION: CABG surgery is associated with a high incidence of RVDD, which cannot be predicted before surgery. The short-term and long-term consequences of this complication are still unknown.
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