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Inverse hyperbolic relationship between resistance and compliance in the pulmonary circulation as depicted by (A) Lankhaar and colleagues (adapted by permission from Reference 62) and (B) Tedford and colleagues (adapted by permission from Reference 61). CTEPH = chronic thromboembolic pulmonary hypertension; IPAH = idiopathic pulmonary artery hypertension; NONPH = healthy control subjects.
