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30 Cards in this Set

  • Front
  • Back
NTG is used for:
Uterine relaxation
Increases uterine blood flow
NTG
There is a rapid ______ transfer with NTG
Placental
Primarily affects arteriolar side
Sodium nitroprusside
Arteriolar and venous dilator
Sodium nitroprusside
Has a quick onset and short duration
Sodium nitroprusside
Does NOT improve uterine blood flow
Sodium nitroprusside
Can cause cyanide toxicity
Sodium nitroprusside
Ultra short acting beta blocker
Esmolol
Esmolol is a:
B1 antagonist
Causes fetal B blockade in sheep
Esmolol
Not commonly used in obstetrics
Esmolol
Esmolol is eliminated by
Plasma esterases
A1 and non selective BB
Labetalol
Ratio of alpha to B effects in labetalol
1:3
Latetalol maintains:
Uterine blood flow
Can be used for tx of PIH and to blunt responses to intubation. A/B blocker
Labetalol
Contraindicated in pts with asthma
Labetalol
Vaspressors
Epi, ephedrine, neo
Uterine artery vasoconstrictor
Epi
Reduces uterine blood flow
Epi
Temporarily relaxes the uterus
Epi
Has direct and indirect action
Ephedrine
Has A and B effects; A - indirect, B- direct
Ephedrine
Ephedrine is _____ times less potent than epi
250
Vasopressor of choice in OB
Ephedrine
Ephedrine does not cause:
Uterine artery constriction
Ephedrine does not compromise:
Uteroplacental perfusion
Ephedrine crosses the placenta and causes:
Increased FHR and BTBV; increases O2 consumption
Ephedrine is not good for a:
Fetus already in distress