Question 1

The following is a common side effect of magnesium sulfate when used for tocolysis:&#10;A) Hyperreflexia&#10;B) Hypercalcemia&#10;C) Drowsiness&#10;D) Hypertension&#10;E) Hypokalemia

Accepted Answer

Magnesium sulfate, when used for tocolysis (to inhibit uterine contractions and delay preterm labor), can cause central nervous system depression, leading to side effects such as drowsiness or lethargy.

Question 2

A 26-year-old woman undergoes a caesarean section. Following delivery of the baby, her uterus does not contract adequately and begins to bleed excessively. Which of the following would be an acceptable agent for the anesthesiologist to administer to improve uterine tone?

A) Methylergonovine
B) Magnesium sulfate
C) Nifedipine
D) Indomethacin
E) Terbutaline

Methylergonovine

Accepted Answer

Methylergonovine is an ergot alkaloid that directly stimulates uterine smooth muscle. The other choices listed have been used as tocolytics and would be contraindicated in this patient.

Deck 17: Drugs Affecting Uterine Motility