Evaluation of right ventriculoarterial coupling in pulmonary hypertension: a magnetic resonance study
نویسندگان
چکیده
Methods We included 139 patients undergoing CMR and right heart catheterization within 2 days (n=151 test pairs) for the evaluation of known or suspected pulmonary hypertension. Right ventricular end-systolic volume index (ESVI) and stroke volume index (SVI) were obtained, respectively, from cardiac cine images and phasecontrast of the pulmonary artery after adjusting for body surface area. Right heart catheterization provided mean pulmonary artery pressure (mPAP) as a surrogate of right ventricular end-systolic pressure, pulmonary capillary wedge pressure (PCWP), and pulmonary vascular resistance index (PVRI). Ea was calculated as (mPAPPCWP)/SVI; and Emax as PAP/ESVI.
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