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Tricuspid regurgitation in acute heart failure: is there any incremental risk?
European Heart Journal Cardiovascular Imaging 2018 September 2
Aim: Significant tricuspid regurgitation (TR) is common in heart failure (HF) and portends poor prognosis. We sought to determine whether the poor outcome results from the TR itself, or whether the TR is a surrogate marker of advanced left-sided myocardial or valvular heart disease.
Methods and results: We studied 639 patients admitted for acute HF. The relationship between TR severity and the endpoint of readmission for HF or mortality was assessed after adjustment for multiple clinical and echocardiographic parameters. Higher TR grade was associated with higher congestion score and with other cardiac abnormalities including reduced left ventricular systolic function, moderate or severe mitral regurgitation, pulmonary hypertension (PH, defined as pulmonary artery systolic pressure ≥ 50 mmHg), and right ventricular dysfunction (all P < 0.001). Only 7% of patients with moderate or severe TR were free of other cardiac lesions. In adjusted models, moderate or severe TR was not associated with readmission for HF or mortality [hazard ratio (HR) 1.24, 95% confidence interval (95% CI) 0.97-1.57]. Patients with moderate/severe TR had similar risk for HF readmission or death compared with patients with trivial/mild TR when PH was not present (HR 1.17; 95% CI 0.78-1.75, P = 0.40) whereas the risk was higher in moderate/severe TR and PH (HR 1.78; 95% CI 1.34-2.36, P < 0.0001).
Conclusion: Patients presenting with symptomatic HF and significant TR have multiple coexisting cardiac abnormalities. TR provides no additive risk in the presence of normal or mildly elevated pulmonary pressures. However, it is associated with excess rehospitalizations and mortality in patients with PH.
Methods and results: We studied 639 patients admitted for acute HF. The relationship between TR severity and the endpoint of readmission for HF or mortality was assessed after adjustment for multiple clinical and echocardiographic parameters. Higher TR grade was associated with higher congestion score and with other cardiac abnormalities including reduced left ventricular systolic function, moderate or severe mitral regurgitation, pulmonary hypertension (PH, defined as pulmonary artery systolic pressure ≥ 50 mmHg), and right ventricular dysfunction (all P < 0.001). Only 7% of patients with moderate or severe TR were free of other cardiac lesions. In adjusted models, moderate or severe TR was not associated with readmission for HF or mortality [hazard ratio (HR) 1.24, 95% confidence interval (95% CI) 0.97-1.57]. Patients with moderate/severe TR had similar risk for HF readmission or death compared with patients with trivial/mild TR when PH was not present (HR 1.17; 95% CI 0.78-1.75, P = 0.40) whereas the risk was higher in moderate/severe TR and PH (HR 1.78; 95% CI 1.34-2.36, P < 0.0001).
Conclusion: Patients presenting with symptomatic HF and significant TR have multiple coexisting cardiac abnormalities. TR provides no additive risk in the presence of normal or mildly elevated pulmonary pressures. However, it is associated with excess rehospitalizations and mortality in patients with PH.
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