Cardiovascular magnetic resonance predicts all-cause mortality in pulmonary hypertension associated with heart failure with preserved ejection fraction

Pankaj Garg, Robert A. Lewis, Christopher S. Johns, Andrew J. Swift, David Capener, Smitha Rajaram, A. A. Roger Thompson, Robin Condliffe, Charlie A. Elliot, Athanasios Charalampopoulos, Abdul G. Hameed, Alexander Rothman, Jim M. Wild, David G. Kiely

Research output: Contribution to journalArticlepeer-review

Abstract

This study aimed to determine the prognostic value of cardiovascular magnetic resonance (CMR) in patients with heart failure with preserved ejection fraction and associated pulmonary hypertension (pulmonary hypertension-HFpEF). Patients with pulmonary hypertension-HFpEF were recruited from the ASPIRE registry and underwent right heart catheterisation (RHC) and CMR. On RHC, the inclusion criteria was a mean pulmonary artery pressure (MPAP) ≥ 25 mmHg and pulmonary arterial wedge pressure > 15 mmHg and, on CMR, a left atrial volume > 41 ml/m 2 with left ventricular ejection fraction > 50%. Cox regression was performed to evaluate CMR against all-cause mortality. In this study, 116 patients with pulmonary hypertension-HFpEF were identified. Over a mean follow-up period of 3 ± 2 years, 61 patients with pulmonary hypertension-HFpEF died (53%). In univariate regression, 11 variables demonstrated association to mortality: indexed right ventricular (RV) volumes and stroke volume, right ventricular ejection fraction (RVEF), indexed RV mass, septal angle, pulmonary artery systolic/diastolic area and its relative area change. In multivariate regression, only three variables were independently associated with mortality: RVEF (HR 0.64, P < 0.001), indexed RV mass (HR 1.46, P < 0.001) and IV septal angle (HR 1.48, P < 0.001). Our CMR model had 0.76 area under the curve (P < 0.001) to predict mortality. This study confirms that pulmonary hypertension in patients with HFpEF is associated with a poor prognosis and we observe that CMR can risk stratify these patients and predict all-cause mortality. When patients with HFpEF develop pulmonary hypertension, CMR measures that reflect right ventricular afterload and function predict all-cause mortality.

Original languageEnglish
Pages (from-to)3019-3025
Number of pages7
JournalInternational Journal of Cardiovascular Imaging
Volume37
Issue number10
Early online date12 May 2021
DOIs
Publication statusPublished - 1 Oct 2021

Keywords

  • Heart failure
  • Magnetic resonance imaging
  • Prognosis
  • Pulmonary hypertension
  • Right ventricular function

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