Hypoxic pulmonary vasoconstriction - Wikipedia
Hypoxic pulmonary vasoconstriction (HPV), also known as the Euler-Liljestrand mechanism, is a physiological phenomenon in which small pulmonary arteries constrict in the presence of alveolar hypoxia (low oxygen levels).
The hypoxic pulmonary vasoconstriction: From physiology to …
Hypoxic pulmonary vasoconstriction (HPV) represents an intrinsic property of pulmonary vascular smooth muscle cells (VSCMs) and an important homeostatic mechanism that helps to ensure correct gas exchange in physiological and pathological conditions.
Physiology, Pulmonary Vasoconstriction - StatPearls - NCBI Bookshelf
2023年4月17日 · Pulmonary vasoconstriction is a physiological phenomenon and mechanism in response to alveolar hypoxia or low oxygen partial pressures in the pulmonary arterioles and, to some extent, the pulmonary venules.
Hypoxic pulmonary vasoconstriction | BJA Education - Oxford …
2017年2月22日 · Learn how hypoxic pulmonary vasoconstriction (HPV) is a reflex that improves ventilation-perfusion matching in the lungs. Explore the factors that influence HPV, its role in acute and chronic respiratory diseases, and its interaction with anaesthetic agents.
Hypoxic Pulmonary Vasoconstriction | Anesthesiology
Hypoxic pulmonary vasoconstriction (HPV) represents a fundamental difference between the pulmonary and systemic circulations. HPV is active in utero, reducing pulmonary blood flow, and in adults helps to match regional ventilation and perfusion although it has little effect in …
Hypoxic Pulmonary Vasoconstriction - CHEST
Learn about the molecular mechanisms, clinical implications, and pathophysiology of HPV, a homeostatic response to alveolar hypoxia. The article reviews the evidence for mitochondrial sensor, calcium signaling, rho kinase, HIF-1α, and other factors involved in HPV.
Hypoxic Pulmonary Vasoconstriction - PubMed Central (PMC)
Hypoxic pulmonary vasoconstriction (HPV) is a homeostatic mechanism that is intrinsic to the pulmonary vasculature. Intrapulmonary arteries constrict in response to alveolar hypoxia, diverting blood to better-oxygenated lung segments, thereby optimizing ventilation/perfusion matching and systemic oxygen delivery.
Hypoxic Pulmonary Vasoconstriction: From Molecular …
Hypoxic pulmonary vasoconstriction (HPV) is a homeostatic mechanism that is intrinsic to the pulmonary vasculature. Intrapulmonary arteries constrict in response to alveolar hypoxia, diverting blood to better-oxygenated lung segments, thereby …
Hypoxic pulmonary vasoconstriction (HPV) is a reflex contrac-tion of vascular smooth muscle in the pulmonary circulation in response to a low regional partial pressure of oxygen. It is an important mechanism for matching of regional perfusion and ventilation in the lung.
Hypoxic pulmonary vasoconstriction: mechanisms and …
2006年1月1日 · This phenomenon is called hypoxic pulmonary vasoconstriction (HPV), and is responsible for maintaining the ventilation–perfusion ratio during localized alveolar hypoxia. In disease, however, global hypoxia results in a detrimental increase in total pulmonary vascular resistance, and increased load on the right heart.