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Hypoxic Pulmonary Vasoconstriction
Physiological Reviews, 2012It has been known for more than 60 years, and suspected for over 100, that alveolar hypoxia causes pulmonary vasoconstriction by means of mechanisms local to the lung. For the last 20 years, it has been clear that the essential sensor, transduction, and effector mechanisms responsible for hypoxic pulmonary vasoconstriction (HPV) reside in the pulmonary
Larissa A Shimoda +2 more
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Reversible Cerebral Vasoconstriction Syndrome
Headache: The Journal of Head and Face Pain, 2009Reversible cerebral vasoconstriction syndromes (RCVS) are a group of disorders that have in common an acute presentation with headache, reversible vasoconstriction of cerebral arteries, with or without neurological signs and symptoms. In contrast to primary central nervous system vasculitis, they have a relatively benign course.
Chad A, Whyte, Leonard H, Calabrese
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Hypoxic pulmonary vasoconstriction
Current Opinion in Anaesthesiology, 1999Hypoxic pulmonary vasoconstriction is a local reflex in the lung that diverts blood away from poorly oxygenated regions. Improvements in understanding of modulators of this response have led to pharmacologic methods whereby V/Q matching may potentially be improved in certain types of pulmonary pathology and during anesthesia for thoracic surgical ...
J P, Dumas +3 more
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Hypoxic pulmonary vasoconstriction
Journal of Applied Physiology, 2005Humans encounter hypoxia throughout their lives. This occurs by destiny in utero, through disease, and by desire, in our quest for altitude. Hypoxic pulmonary vasoconstriction (HPV) is a widely conserved, homeostatic, vasomotor response of resistance pulmonary arteries to alveolar hypoxia.
Rohit, Moudgil +2 more
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Vasoconstrictions mediated by an endothelium-derived vasoconstricting factor (EDCF)
Basic Research in Cardiology, 1989To enlighten the role of endothelium in the generation of vasospasms we examined vascular tone after reduction of oxygen supply in dependence on endothelial function in isolated vessels (rabbit aorta abdominalis, pig coronary, and pulmonary artery).
S, Dhein, A, Salameh, F, Esser, W, Klaus
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Hypoxic Pulmonary Vasoconstriction
High Altitude Medicine & Biology, 2013Hypoxic pulmonary vasoconstriction (HPV) continues to fascinate cardiopulmonary physiologists and clinicians since its definitive description in 1946. Hypoxic vasoconstriction exists in all vertebrate gas exchanging organs. This fundamental response of the pulmonary vasculature in air breathing animals has relevance to successful fetal transition to ...
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Cerebral Vasoconstriction Syndromes
Topics in Stroke Rehabilitation, 2004Stroke from reversible cerebral arterial vasoconstriction has been described in a variety of conditions, including migraine, pregnancy, puerperium (postpartum angiopathy), use of vasoconstrictive drugs, Call-Fleming syndrome, and benign angiopathy of the central nervous system. Although vasoconstriction is an important cause of ischemic and hemorrhagic
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Mechanisms of vasoconstriction
American Heart Journal, 1991The contractility of vascular smooth muscle cells is controlled in a complex manner by both extracellular and intracellular messages. The vascular endothelium does not simply act as a physical barrier between the blood and smooth muscle cells, it integrates intravascular signals and controls the contractility of underlying smooth muscle cells by way of
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Postgraduate Medicine, 1960
Vasoconstriction of some degree is almost always present in the skin of the extremities; it is more active in peripheral sites. Vasoconstriction may be caused by stimuli of central origin or by reflexive responses to peripheral stimuli. Cold and posture are the most significant causes of reflexive stimuli. Abnormal vasoconstriction is seen in Raynaud's
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Vasoconstriction of some degree is almost always present in the skin of the extremities; it is more active in peripheral sites. Vasoconstriction may be caused by stimuli of central origin or by reflexive responses to peripheral stimuli. Cold and posture are the most significant causes of reflexive stimuli. Abnormal vasoconstriction is seen in Raynaud's
openaire +2 more sources