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Definitions of PH and PAH 

Definitions of PH and PAH
Definitions of PH and PAH

Clive Handler

and Gerry Coghlan

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date: 23 October 2019

PH and PAH 8

Normal value of mean pulmonary artery pressure (mPAP) 9

Significance of mPAP 21–24mmHg 9

mPAP during exercise 9

Pulmonary vascular resistance (PVR) 10

Pre-capillary versus post-capillary PH 11

Post-capillary PH ‘out of proportion’ to that expected from PCWP 14

PH is a haemodynamic and pathophysiological abnormality found in many clinical conditions, most commonly heart and lung diseases....

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