Related Experiment Video
Updated: Jun 4, 2025
Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery
Published on: November 28, 2018
Evaluation of the prevalence and predictors of right ventricular diastolic dysfunction in patients undergoing
Jamshid Abedi1, Mohammad Ebrahim Ghafari2, Jalal Kheirkhah3
1School of Medicine, Guilan University of Medical Sciences, Rasht, Iran.
Insights
Coronary artery bypass grafting (CABG) surgery frequently causes right ventricle diastolic dysfunction (RVDD). This complication, which occurs in over 70% of patients, cannot be predicted before surgery.
Area of Science:
- Cardiology
- Cardiac Surgery
- Echocardiography
Background:
- Coronary artery bypass grafting (CABG) is increasingly common.
- Post-surgical complications are a growing concern.
- Right ventricle diastolic dysfunction (RVDD) is a known post-CABG complication.
Purpose of the Study:
- To determine the frequency of RVDD after CABG.
- To identify predictors of RVDD following CABG.
Main Methods:
- A cross-sectional study included 80 adult patients undergoing CABG.
- Echocardiography assessed right ventricle (RV) function pre-operatively and 7 days post-operatively.
- Exclusion criteria included prior heart surgery or arrhythmias.
Main Results:
- 13.8% of patients had pre-existing RVDD, all progressing to Grade II post-CABG.
- Among patients with normal pre-CABG RV function, only 29.9% maintained normal function post-surgery.
- The incidence of post-CABG RVDD was 11.9% for Grade I and 58.2% for Grade II.
- No pre-operative demographic or echocardiographic factors predicted post-CABG RVDD.
Conclusions:
- CABG surgery is associated with a high incidence of RVDD.
- RVDD post-CABG is currently unpredictable based on pre-operative assessments.
- Further research is needed to understand the long-term consequences of post-CABG RVDD.
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. A history of previous heart surgery or arrhythmia were the main exclusion criteria. After recording demographic and clinical information, echocardiography of the right ventricle (RV) was performed the day before the surgery and seven days later. The functional parameters were obtained according to the 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. 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.
More Related Videos
10:33Assessment of Right Ventricular Structure and Function in Mouse Model of Pulmonary Artery Constriction by Transthoracic Echocardiography
Published on: February 3, 2014
08:21Biventricular Assessment of Cardiac Function and Pressure-Volume Loops by Closed-Chest Catheterization in Mice
Published on: June 15, 2020
Related Concept Videos
01:20Mitral Regurgitation I: Introduction
01:22Mitral Stenosis I: Introduction