单词	vasoconstriction
释义	vasoconstriction /ˌveɪzəʊkənˈstrɪkʃ(ə)n / noun [mass noun] The constriction of blood vessels, which increases blood pressure.At low doses, local anesthetics cause systemic vasoconstriction and raise blood pressure.... The effect is a dramatic increase in blood pressure due to vasoconstriction. The vascular effects result in tissue ischemia from vasoconstriction, platelet aggregation, and increased blood viscosity. Derivatives vasoconstrictive /ˌveɪzəʊkənˈstrɪktɪv/ adjective ... In hypoxia also, they initiate vasoconstrictive reflexes which act to maintain the arterial blood pressure. The venom has vasoconstrictive properties that can lead to cyanosis and necrosis, with poor wound healing and infection. Yet in patients with septic shock, vasopressin has strong vasoconstrictive effects, demonstrated in several studies by an increased MAP and systemic vascular resistance. vasoconstrictor /ˌveɪzəʊkənˈstrɪktə/ noun ... Inhaled steroids are potent vasoconstrictors and are known to reduce bronchial blood flow in both normal subjects and patients with asthma, and consequently they may lessen airway edema. Treatment of basilar migraines should avoid vasoconstrictors, otherwise standard abortive and prophylactic migraine medications are appropriate. Vasopressin has been used clinically to treat a variety of disorders, both as an antidiuretic and as a vasoconstrictor.
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