Letter by Smiseth and Nagueh et al Regarding Article, “Role of Diastolic Stress Testing in the Evaluation for Heart Failure With Preserved Ejection Fraction: A Simultaneous Invasive-Echocardiographic Study”
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To the Editor:
We read with interest the article by Obokata et al1 about the role of diastolic stress testing in the evaluation of patients with potential heart failure with preserved ejection fraction (HFpEF). The study used elevated pulmonary capillary wedge pressure at rest or exercise as evidence of HFpEF. The authors explored whether diagnostic algorithms from the European Society of Cardiology2 and American Society of Echocardiography/European Association of Cardiovascular Imaging3 could identify elevated left ventricular filling pressure in patients suspected of having HFpEF. The hemodynamic data collected in the study present a unique opportunity to understand more about the exercise capacity of patients with HFpEF that exceeds simply comparing current echo algorithms, as was the …