HESI RN
HESI Maternity Test Bank
1. When can a woman who thinks she may be pregnant use a home pregnancy test to diagnose pregnancy?
- A. A home pregnancy test can be used right after your first missed period.
- B. These tests are most accurate after you have missed your second period.
- C. Home pregnancy tests often give false positives and should not be trusted.
- D. The test can provide accurate information when used right after ovulation.
Correct answer: A
Rationale: The correct answer is A. Home pregnancy tests detect hCG, a hormone produced during pregnancy, and are most accurate after the first missed period when hCG levels are higher. Testing too early may result in a false negative. Waiting until after the first missed period increases the reliability of the test results. Choice B is incorrect as waiting until after the second missed period is unnecessary and may delay seeking appropriate healthcare. Choice C is incorrect as home pregnancy tests are generally reliable when used correctly. Choice D is incorrect because ovulation occurs before the period, and testing immediately after ovulation may not provide accurate results.
2. During a non-stress test (NST) at 41-weeks gestation, the LPN/LVN notes that the client is not experiencing contractions, the fetal heart rate (FHR) baseline is 144 bpm, and no FHR accelerations are present. What action should the nurse take?
- A. Check the client for urinary bladder distention.
- B. Notify the healthcare provider of the nonreactive results.
- C. Have the mother stimulate the fetus to move.
- D. Ask the client if she has felt any fetal movement.
Correct answer: D
Rationale: In this scenario, the nurse should ask the client if she has felt any fetal movement. This action is important as assessing for fetal movement can help determine if the absence of FHR accelerations is attributed to fetal sleep or decreased fetal activity. It is crucial to gather information directly from the client to aid in the assessment and decision-making process. This approach can provide valuable insights into the fetal well-being and guide further interventions if needed.
3. A father watching the admission of his newborn to the nursery notices that eye ointment is placed in the infant's eyes. He asks what is the purpose of the ointment. The nurse would be correct in stating that the purpose of the ointment is:
- A. Prevent eye infection.
- B. Dilate the pupil so the red reflex can be visualized.
- C. Clear the infant's vision.
- D. Prevent herpes infection.
Correct answer: A
Rationale: The correct answer is A: Prevent eye infection. Eye ointment, usually containing erythromycin, is applied to prevent neonatal conjunctivitis, which can be caused by bacteria present in the birth canal. It is not used to dilate the pupil, clear the infant's vision, or prevent herpes infection.
4. What action should the nurse take if an infant, who was born yesterday weighing 7.5 lbs (3,402 grams), weighs 7 lbs (3,175 grams) today?
- A. Inform and assure the mother that this is normal weight loss.
- B. Encourage the mother to increase the frequency of breastfeeding.
- C. After verifying the accuracy of weight, notify the healthcare provider.
- D. Monitor the stool and urine output of the neonate for the last 24 hours.
Correct answer: A
Rationale: The correct action for the nurse to take in this situation is to inform and assure the mother that this weight loss is normal. Newborns can lose up to 10% of their birth weight in the first few days after birth, which is attributed to fluid loss and adjustment to life outside the womb. This weight loss is typically regained within the first two weeks of life. It is crucial for the nurse to educate and provide reassurance to the mother about this common occurrence in newborns.
5. The healthcare provider prescribes magnesium sulfate 6 grams intravenously (IV) to be infused over 20 minutes for a client with preterm labor. The IV bag contains magnesium sulfate 20 grams in dextrose 5% in water 500 mL. How many mL/hour should the nurse set the infusion pump?
- A. 150 mL/hour
- B. 250 mL/hour
- C. 50 mL/hour
- D. 275 mL/hour
Correct answer: A
Rationale: To calculate the infusion rate, first, determine the total volume to be infused (6 grams of magnesium sulfate) over a specific time frame (20 minutes). Then, calculate the concentration of magnesium sulfate in the IV bag to determine the mL/hour rate. The IV bag contains 20 grams of magnesium sulfate in 500 mL of solution, which means there are 4 grams of magnesium sulfate per 100 mL. Since 6 grams are required, the nurse should set the pump to deliver 150 mL/hour to infuse the prescribed dose over 20 minutes. Choice B, 250 mL/hour, is incorrect because it miscalculates the amount of magnesium sulfate infused per hour. Choice C, 50 mL/hour, is incorrect as it is too slow to deliver the required dose in the specified time frame. Choice D, 275 mL/hour, is incorrect as it overestimates the infusion rate and would deliver the dose too quickly.
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