HESI RN
HESI Maternity Test Bank
1. A 34-week primigravida woman with preeclampsia is receiving Lactated Ringer’s 500ml with magnesium sulfate 20 grams at the rate of 3g/hr. How many ml/hr should the nurse program the infusion pump?
- A. 75ml/hr
- B. 100ml/hr
- C. 50ml/hr
- D. 25ml/hr
Correct answer: A
Rationale: To calculate the infusion rate, divide the total quantity to be infused (500ml) by the total time (1 hour) which equals 500ml/hr. Since the magnesium sulfate is being given at 3g/hr, and 1g of magnesium sulfate is in 5ml of solution, the rate will be 3g/hr x 5ml/g = 15ml/hr. Therefore, the total infusion rate should be 500ml/hr + 15ml/hr = 515ml/hr. Hence, the nurse should program the infusion pump to deliver 75ml/hr (515ml/hr total - 500ml/hr Lactated Ringer's rate). This choice is correct because it accounts for both the Lactated Ringer's and magnesium sulfate rates. Choice B, 100ml/hr, is incorrect as it does not consider the additional magnesium sulfate infusion rate. Choice C, 50ml/hr, is incorrect because it does not account for the magnesium sulfate infusion. Choice D, 25ml/hr, is incorrect as it is too low and does not consider the magnesium sulfate being infused concurrently.
2. A laboring client’s membranes rupture spontaneously. The nurse notices that the amniotic fluid is greenish-brown. What intervention should the nurse implement first?
- A. Turn the client to her left side
- B. Contact the healthcare provider
- C. Assess the fetal heart rate
- D. Check the cervical dilation
Correct answer: C
Rationale: The correct answer is to assess the fetal heart rate. When amniotic fluid is greenish-brown, it may indicate the presence of meconium, which can be concerning as it may lead to fetal distress. Assessing the fetal heart rate will help determine the well-being of the fetus and guide further actions to ensure the safety of both the mother and the baby.
3. 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.
4. What is the priority nursing assessment immediately following the birth of an infant with esophageal atresia and a tracheoesophageal (TE) fistula?
- A. Body temperature.
- B. Level of pain.
- C. Time of first void.
- D. Number of vessels in the cord.
Correct answer: D
Rationale: The priority nursing assessment immediately following the birth of an infant with esophageal atresia and a tracheoesophageal (TE) fistula is to check the number of vessels in the cord. This assessment is crucial to identify any potential anomalies related to the TE fistula, as abnormalities in the cord vessels may indicate associated congenital anomalies that need immediate attention.
5. The nurse is caring for a 2-day old neonate who has not passed meconium and has a swollen abdomen. The healthcare provider reviews the flat plate X-ray of the abdomen and makes a tentative diagnosis of Hirschsprung's disease. Which pathophysiological process is consistent with this neonate's clinical picture?
- A. The congenital absence of parasympathetic ganglion cells to large intestine produces no peristalsis.
- B. Pyloric obstruction causes reflux and projectile hematemesis.
- C. Partial imperforated anal opening limits passage of stools.
- D. Peristalsis moving against the intestinal obstruction causing hyperactivity of the bowel.
Correct answer: A
Rationale: Hirschsprung's disease is caused by the absence of parasympathetic ganglion cells in the large intestine, leading to a lack of peristalsis and obstruction.
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