Figure 1. Changes in pulmonary capillary wedge pressure (PCWP) during exercise in patients with heart failure with preserved ejection fraction (red squares) vs controls (black circles).

*P<0.001 for change in PCWP (vs control); †P<0.001 vs baseline (within group); ‡P<0.01 vs baseline (within group). Reproduced in part from Borlaug et al ¹¹ with permission. Copyright ©2010, Wolters Kluwer Health, Inc.