Saturday, November 2, 2019

Pulmonary hypertension notes


Pulmonary hypertension (PH) is defined as a resting mean pulmonary artery pressure of 25 mm Hg or greater measured during right heart catheterization.

(How I remember the number 25 - PH: 2 letters, Hyper: 5 letters).

Classification of Pulmonary Hypertension mnemonic

"A heart lung chronic thrombotic unclarity"
1: pulmonary Arterial hypertension
2: PH due to left-sided heart disease
3: PH due to lung diseases and/or hypoxia
4: Chronic thromboembolic pulmonary hypertension and other pulmonary artery obstructions
5: PH with unclear or multifactorial causes

The transpulmonary pressure gradient (TPG): The difference between mean pulmonary arterial pressure (mPAP) and left atrial pressure (LAP, commonly estimated by pulmonary capillary wedge pressure PCWP).

A TPG of >12 mmHg would result in a diagnosis of “out of proportion” pulmonary hypertension - suggesting intrinsic pulmonary vascular disease in patients with left-heart conditions associated with increased pulmonary venous pressure.

Will update post as I learn more... 


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