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How can pulmonary hypertension protect from pulmonary odema?

This mentioned in davidson 23 edition, page 517 , mitral stenosis subject “ Atrial fibrillation is very common due to progressive dilatation of the LA. Its onset often precipitates pulmonary oedema because the accompanying tachycardia and loss of atrial contraction lead to marked haemodynamic deterioration and a rapid rise in left atrial pressure. In the absence of AF, a more gradual rise in left atrial pressure may occur. In the presence or absence of AF, pulmonary hypertension may occur, which can protect the patient from pulmonary oedema.“

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Ali Hani

Lvl 1
4y ago
Updated: 11/20/2022

This precapillary vasoconstriction has been considered to protect the pulmonary capillary bed from excessive pressure increases in pulmonary venous hypertension and therefore to prevent fluid leak and edema formation (115, 135).

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rebomoon

Lvl 2
4y ago

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