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30 Cards in this Set
- Front
- Back
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The uterus is an organ composed of:
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Smooth muscle
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The uterus contains a variety of:
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Receptors
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Alpha sympathetic innervation causes the uterus to:
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Contract
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Beta 2 sympathetic innervation causes the uterus to:
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Relax
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Prostaglandins:
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Increase uterine tone
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Oxytocin:
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Increase uterine tone
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Drugs that increase uterine tone:
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Oxytocin/pitocin, ergot alkaloids, prostaglandins
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Uterine tone needs to be increased during:
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Induction/augmentation of labor
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Uterine tone needs to be increased during:
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Induction of therapeutic abortion
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Uterine tone needs to be increased during:
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Cervical ripening
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Uterine tone needs to be increased during:
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Control of uterine atony and hemorrhage following delivery
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Uterine atony occurs in _____ of all deliveries
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2-5%
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Naturally occurring hormone:
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Oxytocin
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Oxytocin is a combo of:
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Pitressin and vasopressin
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Oxytocin is synthesized in the:
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Hypothalamus
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Pitocin is chemically identical to:
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Oxytocin
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Oxytocin increases the _____ of uterine cxs
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Frequency and strength
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Oxytocin: increases ______, actomyocin coupling, muscle cx
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Myoplamsmic calcium concentrations
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Oxytocin has a ____ effect
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Dual
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Oxytocin is a direct :
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Uterotonic
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Oxytocin stimulates (indirect uterine cx effect):
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Prostaglandin release
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Primary uses of pitocin:
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Augmentation of hypotonic labor
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Primary uses of pitocin:
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Induction of labor
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Primary uses of pitocin:
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Increase uterine tone following delivery to prevent uterine atony and PP hemorrhage (first line rx)
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Pitocin is metabolized in the:
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Liver
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Pitocin half life:
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12-17 minutes
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Pitocin is a direct mild:
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Vasodilator
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Pitocin reduces both:
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Systolic and diastolic (more) bp
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Flushing and reflex tachycardia may occur with:
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Pitocin
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You should avoid giving pitocin in:
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Large bolus injections
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