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Table 2 PVR on surgery criteria of PAH related to congenital heart disease

From: Clinical application of pulmonary vascular resistance in patients with pulmonary arterial hypertension

Recommend defect closing PVR (wood) PVRi (wood units · m2)
Y  < 2.3  < 4
N  > 4.6  > 8
Y/N* 2.3–4.6 4–8
  1. PAH pulmonary artery hypertension, PVR pulmonary vascular resistance, PVRi pulmonary vascular resistance index, Y indicated closing defect, N indicated not closing defect
  2. *Indicated requires individualized assessment