HESI RN
HESI Maternity Test Bank
1. 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.
2. The LPN/LVN is preparing a client with a term pregnancy who is in active labor for an amniotomy. What equipment should the nurse have available at the client's bedside?
- A. Litmus paper.
- B. Fetal scalp electrode.
- C. A sterile glove.
- D. Needle and Thread
Correct answer: C
Rationale: For performing an amniotomy, the nurse should have a sterile glove to maintain asepsis and an amniotic hook to rupture the amniotic sac. Litmus paper is not required for this procedure, and a fetal scalp electrode is used for fetal monitoring, not for an amniotomy.
3. 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.
4. The nurse is caring for a one-year-old child following surgical correction of hypospadias. Which nursing action has the highest priority?
- A. Monitor urinary output
- B. Auscultate bowel sounds
- C. Observe appearance of stool
- D. Record percent of diet consumed
Correct answer: A
Rationale: In caring for a one-year-old child post hypospadias surgery, the highest priority action is to monitor urinary output. This is crucial to assess kidney function and ensure there are no complications following the surgical procedure. Auscultating bowel sounds, observing stool appearance, and recording diet consumption are important assessments too, but in this case, monitoring urinary output takes precedence due to the nature of the surgery and potential complications related to urinary function.
5. At 35 weeks gestation, a client complains of 'pain whenever the baby moves.' The nurse notes a temperature of 101.2 F (38.4 C) with severe abdominal or uterine tenderness on palpation. What condition do these findings indicate?
- A. Round ligament strain.
- B. Chorioamnionitis.
- C. Abruptio placentae.
- D. Viral infection.
Correct answer: B
Rationale: The client's symptoms of fever and abdominal tenderness, along with the gestational age, are classic signs of chorioamnionitis, an infection of the amniotic fluid. Chorioamnionitis is a serious condition that requires prompt recognition and treatment to prevent maternal and fetal complications. Round ligament strain (Choice A) typically presents with sharp, stabbing pain on the sides of the abdomen and is not associated with fever or uterine tenderness. Abruptio placentae (Choice C) presents with sudden-onset vaginal bleeding and severe abdominal pain, often with a board-like uterus. Viral infections (Choice D) may present with a variety of symptoms, but the combination of fever, abdominal tenderness, and gestational age in this scenario points more towards chorioamnionitis.
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