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Vasoconstriction is the narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels, in particular the large arteries and small arterioles.
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As a vasodilator, nitric oxide widens and relaxes blood vessels, which lowers blood pressure and simultaneously improves blood flow. Celery is another food that offers the same benefits — not to ...
Endogenous substances and drugs that cause vasodilation are termed vasodilators. Many of these substances are neurotransmitters released by perivascular nerves of the autonomic nervous system [ 6 ] Baroreceptors sense blood pressure and allow adaptation via the mechanisms of vasoconstriction or vasodilation to maintain homeostasis .
Opening and keeping open the microcirculation is a consideration in the treatment of distributive shock, as a result limiting the use of vasopressors has been suggested. [2] Control of inflammation, vascular function and coagulation to correct pathological differences in blood flow and microvascular shunting has been pointed to as a potentially ...
Vasopressors have not been found to improve outcomes when used for hemorrhagic shock from trauma [38] but may be of use in neurogenic shock. [20] Activated protein C (Xigris), while once aggressively promoted for the management of septic shock , has been found not to improve survival and is associated with a number of complications. [ 39 ]
A cerebral vasodilator is a drug which acts as a vasodilator in the brain. [1] [2] They are used to improve blood flow in people with cerebrovascular insufficiency and to treat neurological disorders secondary to this condition. [2] A number of different cerebral vasodilators exist.
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