Pulmonary HTN-Definition-Causes-Presentation-Dx-Treatment,”Pulmonary arterial pressure > 25 at rest or > 30 with exerciseCauses-Reduced venous drainage (MS)-Increased pulmonary flow (L–>R shunt)-Obstruction-Hypoxia-Increased blood viscosityPresentation-Loud P2 + sternum lift (indicates RV dilation)Dx-ECG: RVH (right axis deviation)-Echo: Dilated pulmonary artery, dilated/hypertrophied RA and RV, abnormal movement of IV septum due to increased RV volume

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