Obstetric Pharm Flashcards
During pregnancy, does gastric absorption slow or increase?
slow- oral medication takes longer to take effect
What makes IV administered medication pass quickly through the maternal system?
increase in hepatic metabolism and increase in renal excretion
What is magnesium sulfate classified as?
electrolyte
When is magnesium sulfate used in pregnancy?
severe hypertension lasting more than 15 minutes with preeclampsia or seizure in 20 weeks of greater of gestation
What are the side effects of magnesium sulfate?
drowsiness, respiratory depression, hypotension, bradycardia with rapid administration
What is calcium chloride classified as?
electrolyte
What is calcium chloride an antidote for?
magnesium sulfate overdose
What are the adverse effects of calcium chloride?
nausea, vomiting, syncope, bradycardia, dysrhythmias
How is calcium chloride administered?
slow IV push
What is valium/diazepam classified as?
benzodiapine
When is diazepam/valium indicated in pregnant women?
Eclampsia when the pt’s seizure do not respond to magnesium sulfate
What are the adverse of valium/diazepam?
nausea, vomiting, respiratory depress and hypotension
What is Diphenhydramine classified as?
antihistamine
How is diphenhydramine used in pregnancy?
sedative and antiemetic (nausea/vomiting),treats hyperemesis gravidarum
What is the classification of ondansetron?
antiemetic (nausea and vomiting
What are the adverse effects of ondansetron?
QT polongation
How does oxytocin work?
naturally occuring pituitary hormone that triggers uterine contractions by acting on smooth muscle
What is oxytocin used for?
only to control severe postpartum hemorrhage after all products are expelled from the uterus
What are the adverse effects of oxytocin?
nausea/vomitting, seizures, cardiac dysrhythmias and anaphylaxis
What can happen if oxytocin is given in excess?
coma, uterine rupture and hypertension
Indications for magnesium sulfate
Pre-eclampsia
Eclampsia
What is Pitocin
synthetic oxytocin, controls hemorrhaging and sustains uterine contractions
Contraindications of Pitocin
do not administer until the baby and placenta has been delivered
Dose of Pitocin
10-40 units in 1L of solution