EXAM REVIEW: PRETERM LABOR, TOCOLYTICS,
INDUCTION & BISHOP SCORE
1. Preterm labor is defined as the onset of regular uterine contractions
resulting in cervical changes occurring between which gestational
ages?
A) 24 and 40 weeks
B) 20 and 37 weeks
C) 16 and 38 weeks
D) 28 and 42 weeks
Answer: B) 20 and 37 weeks
Rationale: Preterm labor is specifically defined as labor that occurs after
20 weeks but before the completion of 37 weeks of gestation.
2. Which of the following is a sign or symptom of preterm labor?
A) Decreased vaginal discharge
B) Sharp, stabbing abdominal pain in the upper right quadrant
C) Low, dull backache
D) Less than 4 uterine contractions in one hour
Answer: C) Low, dull backache
Rationale: A persistent low, dull backache is a common sign of preterm
labor, unlike the other options which are not typical indicators.
3. Which patient is at the highest risk for preterm labor based on the
identified risk factors?
A) A 25-year-old Caucasian woman with a history of term births
,B) A 30-year-old Asian woman who is a non-smoker
C) A 22-year-old African American woman with a history of preterm
birth
D) A 35-year-old Hispanic woman with a high socioeconomic status
Answer: C) A 22-year-old African American woman with a history of
preterm birth
Rationale: A history of preterm birth and African American race are
both significant risk factors for preterm labor.
4. What is fetal fibronectin (fFN)?
A) A hormone that stimulates uterine contractions
B) A glycoprotein that acts as the "glue" holding the fetal membranes to
the decidua
C) A protein that indicates fetal lung maturity
D) An enzyme that is elevated during a placental abruption
Answer: B) A glycoprotein that acts as the "glue" holding the fetal
membranes to the decidua
Rationale: fFN is a glycoprotein found at the junction of the fetal
membranes and the decidua, and its presence in the cervicovaginal
fluid can indicate a disruption of this junction.
5. A nurse is assessing a patient for signs of preterm labor. Which
action is most appropriate?
A) Encourage the patient to ambulate to assess for an increase in
contractions.
B) Position the patient on her back to get the most accurate fetal heart
rate.
C) Administer a dose of oral opioids for pain management.
D) Monitor the fetal heart rate and uterine contractions.
Answer: D) Monitor the fetal heart rate and uterine contractions.
,Rationale: Monitoring fetal heart rate and uterine contractions is a
primary nursing action to assess the status of the patient and fetus
when preterm labor is suspected.
6. What teaching point is crucial for a mother who is at risk for
preterm labor?
A) Engaging in heavy lifting is safe as long as she uses proper form.
B) Breast stimulation is encouraged to prepare for breastfeeding.
C) Avoid long travel and minimize standing.
D) Pelvic rest is not necessary unless she is experiencing pain.
Answer: C) Avoid long travel and minimize standing.
Rationale: Minimizing standing and avoiding long travel are important
preventative measures to reduce the risk of initiating preterm labor.
7. Which of the following is a tocolytic medication that is classified as
a Calcium Channel Blocker?
A) Indomethacin
B) Magnesium Sulfate
C) Terbutaline
D) Nifedipine
Answer: D) Nifedipine
Rationale: Nifedipine is a calcium channel blocker used as a tocolytic
agent to relax uterine smooth muscle.
8. What is the mechanism of action for Terbutaline (Brethine)?
A) Calcium channel blockade
B) Beta2-adrenergic agonist
C) Prostaglandin synthesis inhibition
D) Mineral and electrolyte replacement
Answer: B) Beta2-adrenergic agonist
, Rationale: Terbutaline is a beta2-adrenergic agonist that stimulates
beta2 receptors in the uterus to cause smooth muscle relaxation.
9. Which of the following is an adverse reaction associated with
Magnesium Sulfate?
A) Hyperglycemia
B) Nervousness and tremors
C) Drowsiness and decreased respiratory rate
D) Pulmonary edema
Answer: C) Drowsiness and decreased respiratory rate
Rationale: Drowsiness and decreased respiratory rate are common
adverse effects of Magnesium Sulfate due to its central nervous system
depressant effects. The antidote is Calcium Gluconate.
10. Which medication is administered to a pregnant woman at risk for
preterm delivery to help improve fetal lung function?
A) Nifedipine
B) Magnesium Sulfate
C) Betamethasone
D) Terbutaline
Answer: C) Betamethasone
Rationale: Betamethasone is a corticosteroid (glucocorticoid) given to
accelerate fetal lung maturity and reduce the risk of respiratory distress
syndrome.
11. What is the term for the process of manually starting labor?
A) Augmentation
B) Induction
C) Effacement
D) Dilation