Key result
Exercise intolerance in pulmonary arterial hypertension is driven by complex, multifactorial pathophysiological mechanisms including autonomic dysfunction, muscle weakness, and endothelial dysfunction.
Why the study?
Exercise intolerance in pulmonary arterial hypertension involves complex, multifactorial mechanisms beyond the pulmonary circulation and right ventricle, which this article examines along with their clinical relevance.
Exercise intolerance in PAH is multifactorial, extending beyond the pulmonary circulation and right ventricle to include autonomic, muscular, and endothelial dysfunction.
Broadens PAH exercise evaluation beyond RV; leaves open targeted autonomic and muscle interventions pending prospective data.
Pulmonary arterial hypertension (PAH) is a chronic disease that is associated with a significant and progressive limitation of exercise tolerance. The pathophysiological mechanisms of exercise intolerance during exercise are complex, multifactorial, and in fact not limited to the pulmonary circulation and the right ventricle. Disturbance of autonomic nervous function leads to an enhanced chemosensitivity, as well as respiratory and peripheral muscle weakness, and systemic endothelial dysfunction, which together play important roles in PAH pathophysiology and symptomatology. This article is focused on the different pathophysiological mechanisms of exercise intolerance in PAH, their interactions, and their relevance for clinical practice.
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Dumitrescu et al. (2019) conducted a review in Pulmonary arterial hypertension (PAH). Exercise intolerance in pulmonary arterial hypertension is driven by complex, multifactorial pathophysiological mechanisms including autonomic dysfunction, muscle weakness, and endothelial dysfunction.
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