Effects of Right Ventricular Ejection Fraction on Outcomes in Chronic Systolic Heart Failure

Abstract Background Patients with left ventricular systolic heart failure have a significantly increased risk of all-cause mortality and sudden cardiac death. A cardiac magnetic resonance (CMR) sub-study of the Danish Study to Assess the Efficacy of Implantable Cardioverter Defibrillators (ICDs) in Patients with Nonischemic Systolic Heart Failure on Mortality (DANISH) trial found that in patients who also had reduced right ventricular ejection fraction, ICD implantation significantly increased survival. Recent studies have found that right ventricular free wall strain (RV-FWS) assessed by echocardiography has a similar prognostic power as right ventricular ejection fraction assessed by CMR and RV-FWS determined by echocardiographic may be a more accessible imaging modality to identify patients more likely to benefit from ICD implantation. Purpose To investigate if echocardiographic RV-FWS is related to risk of all-cause death in patients with heart failure and left ventricular systolic dysfunction and whether RV-FWS can identify a sub-group of patients more likely to benefit from ICD implantation. Methods RV-FWS was measured in 343 patients with left ventricular systolic heart failure included in the DANISH trial at our hospital, who underwent an echocardiographic examination before randomization. Cox regression was used to assess the effects of RV-FWS and ICD implantation on all-cause mortality. Impaired RV-FWS was defined as RV-FWS >−20% according to guidelines. Results Median RV-FWS was −19% (quartiles: −24% to −14%). Impaired RV-FWS was present in 186 (54%) patients, and 70 (20.4%) patients died. RV-FWS was related to all-cause mortality both univariably, hazard ratio (HR) 1.07 (95% confidence interval [CI], 1.03–1.11), P=0.001, and adjusted for age, gender, tricuspid annular plane systolic excursion and left ventricular ejection fraction, HR 1.06 (95% CI 1.01–1.10), P=0.009. There was a significant interaction between impaired RV-FWS and effect of ICD, P for interaction=0.045 and ICD implantation significantly reduced mortality in patients with impaired RV-FWS, HR 0.52 (95% CI 0.28–0.96), P=0.04, but not in patients with normal RV-FWS, HR 1.34 (95% CI 0.64–2.82), P=0.44. Conclusion RV-FWS was independently related to all-cause mortality and associated with effect of ICD implantation. With validation in larger studies, impaired RV-FWS may potentially become a candidate for selecting patients for ICD implantation. Impaired RVFWS and effect of ICD Funding Acknowledgement Type of funding source: Foundation. Main funding source(s): Danish Heart Foundation

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LOW RIGHT VENTRICULAR EJECTION FRACTION: A POTENTIAL EXPLANATION FOR RACIAL DIFFERENCES IN MORTALITY IN ADVANCED SYSTOLIC HEART FAILURE IN THE BETA-BLOCKER EVALUATION OF SURVIVAL TRIAL

Journal of the American College of Cardiology ◽

10.1016/s0735-1097(13)60686-5 ◽

2013 ◽

Vol 61 (10) ◽

pp. E686 ◽

Cited By ~ 1

Author(s):

Michel White ◽

Kanan Patel ◽

Guillem Caldentey ◽

Prakash Deedwania ◽

Inmaculada Aban ◽

...

Keyword(s):

Heart Failure ◽

Ejection Fraction ◽

Right Ventricular ◽

Racial Differences ◽

Beta Blocker ◽

Systolic Heart Failure ◽

Right Ventricular Ejection Fraction ◽

Ventricular Ejection ◽

Ventricular Ejection Fraction ◽

Potential Explanation

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ACCESSMENT OF RIGHT VENTRICULAR SYSTOLIC FUNCTION USING TAPSE

Journal of Medicine and Pharmacy ◽

10.34071/jmp.2011.5.9 ◽

2011 ◽

pp. 62-70

Author(s):

Lien Nhut Nguyen ◽

Anh Vu Nguyen

Keyword(s):

Heart Failure ◽

Left Ventricular Ejection Fraction ◽

Ejection Fraction ◽

Right Ventricular ◽

Systolic Function ◽

Systolic Heart Failure ◽

Left Ventricular ◽

Ventricular Ejection ◽

Left Ventricular Ejection ◽

Ventricular Ejection Fraction

Background: The prognostic importance of right ventricular (RV) dysfunction has been suggested in patients with systolic heart failure (due to primary or secondary dilated cardiomyopathy - DCM). Tricuspid annular plane systolic excursion (TAPSE) is a simple, feasible, reality, non-invasive measurement by transthoracic echocardiography for evaluating RV systolic function. Objectives: To evaluate TAPSE in patients with primary or secondary DCM who have left ventricular ejection fraction ≤ 40% and to find the relation between TAPSE and LVEF, LVDd, RVDd, RVDd/LVDd, RA size, severity of TR and PAPs. Materials and Methods: 61 patients (36 males, 59%) mean age 58.6 ± 14.4 years old with clinical signs and symtomps of chronic heart failure which caused by primary or secondary DCM and LVEF ≤ 40% and 30 healthy subject (15 males, 50%) mean age 57.1 ± 16.8 were included in this study. All patients and controls were underwent echocardiographic examination by M-mode, two dimentional, convensional Dopler and TAPSE. Results: TAPSE is significant low in patients compare with the controls (13.93±2.78 mm vs 23.57± 1.60mm, p<0.001). TAPSE is linearly positive correlate with echocardiographic left ventricular ejection fraction (r= 0,43; p<0,001) and linearly negative correlate with RVDd (r= -0.39; p<0.01), RVDd/LVDd (r=-0.33; p<0.01), RA size (r=-0.35; p<0.01), TR (r=-0.26; p<0.05); however, no correlation was found with LVDd and PAPs. Conclusions: 1. Decreased RV systolic function as estimated by TAPSE in patients with systolic heart failure primary and secondary DCM) compare with controls. 2. TAPSE is linearly positive correlate with LVEF (r= 0.43; p<0.001) and linearly negative correlate with RVDd (r= -0.39; p<0.01), RVDd/LVDd (r=-0.33; p<0.01), RA size (r=-0.35; p<0.01), TR (r=-0.26; p<0.05); however, no correlation is found with LVDd and PAPs. 3. TAPSE should be used routinely as a simple, feasible, reality method of estimating RV function in the patients systolic heart failure DCM (primary and secondary).

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