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. Author manuscript; available in PMC: 2021 Sep 1.
Published in final edited form as: Curr Opin Pulm Med. 2020 Sep;26(5):384–390. doi: 10.1097/MCP.0000000000000699

Figure 1. Changes over time to the hemodynamic definition of pulmonary hypertension.

Figure 1.

Since the 1st World Symposium on Pulmonary Hypertension (WSPH) in 1973, there have been a number of changes to the hemodynamic criteria for diagnosing PH and pre-capillary PH.