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The extent of vasoconstriction may be slight or severe depending on the substance or circumstance. Many vasoconstrictors also cause pupil dilation. Medications that cause vasoconstriction include: antihistamines, decongestants, and stimulants. Severe vasoconstriction may result in symptoms of intermittent claudication. [1]
Methamphetamine is a sympathomimetic drug that causes vasoconstriction and tachycardia. Methamphetamine also promotes abnormal extra heart beats and irregular heart rhythms some of which may be life-threatening. [42]
Anhydrous aluminium sulfate is the main ingredient and acts as a vasoconstrictor in order to disable blood flow. The stick is applied directly to the bleeding site. The high ionic strength promotes flocculation of the blood, and the astringent chemical causes local vasoconstriction
Since β 2 adrenergic receptors can cause vascular smooth muscle dilation, beta blockers may cause some vasoconstriction. However, this effect tends to be small because the activity of β 2 receptors is overshadowed by the more dominant vasoconstricting α 1 receptors.
vasoconstriction of pain producing intra cranial extracerebral vessels by a direct effect on vascular smooth muscle. Sumatriptan and rizatriptan have been shown to cause vasoconstriction in the human middle meningeal arteries. inhibition of vasoactive neuropeptide release by trigeminal terminals innervating intracranial vessels and the dura mater.
Alpha 1 blockers inhibit vasoconstriction normally initiated by the baroreceptor reflex upon postural change and the subsequent drop in pressure. [26] Other antihypertensive medications may also cause orthostatic hypotension, in addition to anticholinergics, dopaminergic drugs, opiates and psychoactive medications. [27]
[13] [36] [37] The drugs in the latter group seemed to be effective in inhibiting renin activity and lowering blood pressure in both animals and humans. [38] Unfortunately, they had to be given parenterally because of poor bioavailability. They also turned out to have short durations of action, low potencies and their ability to lower blood ...
Reversing the underlying causes of vasodilatory shock, stabilizing hemodynamic, preventing renal, myocardial, and other organs from injuries due to hypoperfusion and hypoxia, and taking necessary measures to safeguard against complications including venous thromboembolism are served as the top priorities during the treatment.