HESI RN
HESI Maternity Test Bank
1. An infant with tetralogy of Fallot becomes acutely cyanotic and hyperneic. Which action should the nurse implement first?
- A. Place the infant in a knee-chest position.
- B. Administer morphine sulfate.
- C. Start intravenous fluids.
- D. Provide 100% oxygen by face mask.
Correct answer: A
Rationale: In a tetralogy of Fallot situation, placing the infant in a knee-chest position is the initial priority to help increase systemic vascular resistance, which reduces the right-to-left shunt and improves oxygenation. This position can assist in optimizing oxygen levels before considering other interventions. Administering morphine sulfate (choice B) is not the first-line treatment for tetralogy of Fallot crisis. Starting intravenous fluids (choice C) may be necessary but is not the priority in this situation. Providing 100% oxygen by face mask (choice D) may not fully address the underlying issue of decreased systemic vascular resistance that leads to cyanosis in tetralogy of Fallot.
2. At 40 weeks gestation, a client presents to the obstetrical floor with spontaneous rupture of amniotic membranes at home and is in active labor. The client feels the need to bear down and push. What information is most important for the nurse to obtain first?
- A. Estimated amount of fluid.
- B. Any odor noted when membranes ruptured.
- C. Color and consistency of fluid.
- D. Time the membranes ruptured.
Correct answer: C
Rationale: The color and consistency of the amniotic fluid are crucial to assess as they can provide valuable information about the presence of meconium, which may indicate fetal distress. Meconium-stained amniotic fluid can lead to complications such as meconium aspiration syndrome in the newborn. Therefore, assessing the color and consistency of the amniotic fluid is the priority in this situation to ensure timely interventions if needed. Estimated amount of fluid (Choice A) may be important but not as critical as assessing for meconium. Any odor noted when membranes ruptured (Choice B) is less relevant compared to assessing for meconium. Knowing the time the membranes ruptured (Choice D) is important but does not take precedence over assessing for fetal distress indicated by meconium presence.
3. A 38-week primigravida who works at a desk job and sits at a computer for 8 hours each day tells the nurse that her feet have begun to swell. Which instruction would be most effective in preventing pooling of blood in the lower extremities?
- A. Wear support stockings.
- B. Reduce salt in her diet.
- C. Move about every hour.
- D. Avoid constrictive clothing.
Correct answer: C
Rationale: During pregnancy, especially in the third trimester, it is common for women to experience swelling due to decreased circulation. Encouraging the patient to move about every hour helps prevent blood pooling in the lower extremities by promoting circulation. This simple activity can help alleviate swelling and discomfort associated with prolonged sitting.
4. 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.
5. After a client delivered vaginally 2 days ago, what information should you share with her if she wants to resume using her diaphragm for birth control?
- A. The diaphragm is the most effective form of contraception.
- B. The diaphragm must be refitted after childbirth.
- C. Vaseline lubricant should be used when inserting the diaphragm.
- D. The diaphragm should be inserted 2 to 4 hours before intercourse.
Correct answer: B
Rationale: After childbirth, the diaphragm must be refitted to ensure a proper fit and effectiveness. Changes in the body post-delivery can affect the fit of the diaphragm, making it necessary to get refitted. Choice A is incorrect because while the diaphragm can be effective, it is not the most effective form of contraception. Choice C is incorrect because oil-based lubricants like Vaseline can damage latex diaphragms. Choice D is incorrect because the diaphragm should be inserted no more than 2 hours before intercourse, not 2 to 4 hours.
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