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Biological: Behavioural genetics · Evolutionary psychology · Neuroanatomy · Neurochemistry · Neuroendocrinology · Neuroscience · Psychoneuroimmunology · Physiological Psychology · Psychopharmacology (Index, Outline)
A vasoconstrictor, also vasopressor or simply pressor, is any substance that acts to cause vasoconstriction (narrowing of the lumena of blood vessels) and usually results in an increase of the blood pressure. The opposite process, vasodilation, is the opening of blood vessels. Vasoconstrictors are used in medicine to treat hypotension.
Many vasoconstrictors act on specific receptors, such as vasopressin receptors or adrenoreceptors. Vasoconstrictors are also used clinically to increase blood pressure or to reduce local blood flow. Exposure to moderately high levels of stress also induces vasoconstriction.
Examples of vasoconstrictors[]
Vasoconstrictors include systemic and topical. For example, phenylephrine is available systemic (i.e. orally ingested tablets like Sudafed PE), and topical (such as nose sprays like Neo-synephrine, and eye drops for pupil dilation purposes)
- Amphetamine
- Angiotensin
- Antihistamines
- Adrenaline
- Asymmetric dimethylarginine
- Adenosine triphosphate
- Bufotenine
- Catecholamines
- Cocaine
- Decongestants
- Dihydroergotamine
- Endothelin
- Ephedrine
- Ergine
- Metamphetamine
- Methoxamine
- Methylphenidate
- Neuropeptide Y
- Norepinephrine
- Phenylephrine
- Pseudoephedrine
- Serotonin
- Tetrahydrozoline hydrochloride (in eye drops)
- Thromboxane
- Tryptamine
- Tyramine
See also[]
- Addison's disease
- Bright light
- Cold
- Inotrope
- Heart rate affecting drugs
- Hypotension
- Nitric oxide
- Elevated sound levels
- Pheochromocytoma
- Shock
- Stimulants
- Vasodilation
- Vasodilator drugs
- Vasoconstriction
- Vasopressin
References[]
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External links[]
- Definition of Vasoconstriction on HealthScout
- Cannabis arteritis revisited--ten new case reports
- Are coronary heart disease and peripheral arterial disease associated with tobacco or cannabis consumption
- Vasoconstrictor effects of Cannabis appear to inhibit Migraine (headache) attacks
Cardiovascular system, physiology: cardiovascular physiology | |
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Volumes |
Preload - Afterload - End-systolic volume - End-diastolic volume - Frank-Starling law of the heart |
Interactions |
Cardiac output - Wiggers diagram - Pressure volume diagram |
Tropism |
Chronotropic - Dromotropic - Inotropic |
Hemodynamics |
Baroreflex - Kinin-kallikrein system - Renin-angiotensin system - Vasoconstrictors - Vasodilators - Compliance - Vascular resistance |
Other |
Electrical conduction system of the heart (Cardiac action potential) |
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