Right Ventricular Function in Heart Failure with Preserved Ejection Fraction: A Community Based Study.
Circulation. 2014 Nov 12;
Authors: Mohammed SF, Hussain I, Abou Ezzeddine OF, Takahama H, Kwon SH, Forfia P, Roger VL, Redfield MM
BACKGROUND: -The prevalence and clinical significance of right ventricular (RV) systolic dysfunction (RVD) in patients with heart failure and preserved EF (HFpEF) are not well characterized.
METHODS AND RESULTS: -Consecutive, prospectively identified HFpEF (Framingham HF criteria, EF ≥50%) patients (N=562) from Olmsted County, Minnesota underwent echocardiography at HF diagnosis and follow-up for cause specific mortality and HF hospitalization. RV function was categorized by tertiles of tricuspid annular plane systolic excursion (TAPSE) and by semi-quantitative (normal, mild RVD or moderate-severe RVD) 2D assessment. Whether RVD was defined by semi-quantitative assessment or TAPSE ≤ 15 mm, HFpEF patients with RVD were more likely to have atrial fibrillation, pacemakers and chronic diuretic therapy. At echo, patients with RVD had slightly lower LVEF, worse diastolic dysfunction, lower blood pressure and cardiac output, higher pulmonary artery systolic pressure (PASP), and more severe RV enlargement and tricuspid valve regurgitation. Adjusting for age, sex, PASP and comorbidities, the presence of any RVD by semi-quantitative assessment was associated with higher all-cause (hazard ratio (HR) = 1.35 (1.03-1.77; p=0.03)) and cardiovascular (HR=1.85 (1.20-2.80; p=0.006)) mortality and higher first (HR=1.99 (1.35-2.90; p=0.0006) and multiple (HR=1.81 (1.18-2.78; p=0.007) HF hospitalization rates. RVD defined by TAPSE values showed similar but weaker associations with mortality and HF hospitalizations.
CONCLUSIONS: -In the community, RVD is common in HFpEF patients, associated with clinical and echocardiographic evidence of more advanced HF and predictive of poorer outcomes.
PMID: 25391518 [PubMed - as supplied by publisher]