Figure 3.

Alteration in resistance–compliance relationship in pulmonary hypertension. (A) Elevated pulmonary capillary wedge pressure shifts the PVR–PAC curve to the left as depicted by Tedford and colleagues (adapted by permission from Reference 61). (B) RC time is reduced in CTEPH patients both pre- and postendarterectomy as depicted by MacKenzie and colleagues (adapted by permission from Reference 67). CTEPH = chronic thromboembolic pulmonary hypertension; IPAH = idiopathic pulmonary artery hypertension; PCWP = pulmonary capillary wedge pressure; PEA = pulmonary endarterectomy; RC = resistance and compliance.