Magnesium: Hypotensive effect

Obstetric Anesthesia, Pharmacology

Magnesium also indirectly affects vascular contractility by inhibiting the release of catecholamines both from the adrenal medulla and peripheral adrenergic terminals resulting in decreased vasoconstriction.

In obstetrics, Mg decreases uterine tone through relaxation of uterine blood vessels and uterine smooth muscle.

Sources

    Br J Anaesth. 1999 Aug;83(2):202-3

    [PubMed: 10618948]

    See also Magnesium: side effects

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2012

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