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Ambient temperature is an example of exogenous vasoconstriction. Cutaneous vasoconstriction will occur because of the body's exposure to the severe cold. Examples of endogenous factors include the autonomic nervous system, circulating hormones, and intrinsic mechanisms inherent to the vasculature itself (also referred to as the myogenic response).
The initial treatment aiming at restoring effective blood pressure in patients that have refractory shock typically starts with introducing norepinephrine and dopamine. [24] Vasopressin comes as the second-line agent. [24] However, high-dose therapy is linked to excessive coronary, splanchnic vasoconstriction, and hypercoagulation. [6]
Overuse of β 2 agonists and asthma treatment without proper inhaled corticosteroid use has been associated with an increased risk of asthma exacerbations and asthma-related hospitalizations. [8] The excipients, in particular sulfite, could contribute to the adverse effects.
Various vasoactive agents, such as prostanoids, phosphodiesterase inhibitors, and endothelin antagonists, are approved for the treatment of pulmonary arterial hypertension. The use of vasoactive agents for patients with pulmonary hypertension may cause harm and unnecessary expense to persons with left heart disease or hypoxemic types of lung ...
It is commonly used to alleviate the pain of minor injuries, as well as decrease muscle soreness. The use of ice packs in treatment decreases the blood flow most rapidly at the beginning of the cooling period, [21] this occurs as a result of vasoconstriction, the initial reflex sympathetic activity. Although the use of cryotherapy has been ...
For example, if the natural activation of the α 1-adrenergic receptor leads to vasoconstriction, an α 1-adrenergic antagonist will result in vasodilation. [ 3 ] Some adrenergic antagonists, mostly β antagonists, passively diffuse from the gastrointestinal tract.
The standard drug treatment of dexamethasone does not alter the hypoxia or the consequent vasoconstriction, but stimulates fluid reabsorption in the lungs to reverse the edema. Additionally, several studies on native populations remaining at high altitudes have demonstrated to varying degrees the blunting of the HPV response.
Generalized vasoconstriction usually results in an increase in systemic blood pressure. Pages in category "Vasoconstrictors" The following 38 pages are in this ...