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. A client with anorexia nervosa has a body mass index (BMI) of 16.5 and has been diagnosed with bradycardia. Which of the following findings should the RN be most concerned about?
- A. Body temperature of 96.8°F.
- B. Heart rate of 52 BPM.
- C. Serum potassium level of 4.1 mEq/L.
- D. Electrocardiogram (ECG) changes.
Correct answer: D
Rationale: In a client with anorexia nervosa and bradycardia, monitoring for ECG changes is crucial as these changes may indicate potentially life-threatening cardiac complications. While other findings like low body temperature, bradycardia, and serum potassium levels are concerning, ECG changes specifically reflect the impact of bradycardia on the heart's electrical activity and should be the priority for the nurse to assess and address.
3. A client with a history of deep vein thrombosis (DVT) is admitted with unilateral leg swelling. Which intervention should the nurse implement?
- A. Elevate the affected leg on a pillow.
- B. Apply a warm compress to the affected leg.
- C. Perform passive range-of-motion exercises on the affected leg.
- D. Encourage the client to ambulate frequently.
Correct answer: A
Rationale: The correct intervention for a client with a history of deep vein thrombosis (DVT) and unilateral leg swelling is to elevate the affected leg on a pillow. Elevating the affected leg helps reduce swelling and pain by promoting venous return and preventing stasis of blood flow. Applying a warm compress (Choice B) may increase inflammation and worsen the condition. Performing passive range-of-motion exercises (Choice C) and encouraging ambulation (Choice D) can dislodge a clot and lead to potential embolism, making these choices contraindicated in a client with DVT.
4. A 54-year-old male client and his wife were informed this morning that he has terminal cancer. Which nursing intervention is likely to be most beneficial?
- A. Ask the wife how she would like to participate in the client’s care.
- B. Provide the wife with information about hospice.
- C. Encourage the wife to visit during and after painful treatments are completed.
- D. Refer the wife to a support group for family members of those dying of cancer.
Correct answer: A
Rationale: During this challenging time of dealing with a terminal cancer diagnosis, involving the wife in the care process can be highly beneficial. By asking the wife how she would like to participate in the client’s care, it allows her to feel more in control and connected. This approach fosters a collaborative care environment, ensuring that the wife's preferences and needs are taken into consideration. Providing information about hospice (choice B) may be premature at this stage and could potentially overwhelm the family. Encouraging the wife to visit during and after painful treatments (choice C) may not address her need for involvement in decision-making. Referring the wife to a support group (choice D) is helpful but may not directly involve her in the care process of her husband.
5. Protein synthesis begins with a process known as transcription. What is produced during this process?
- A. A codon
- B. A DNA helix
- C. A DNA strand
- D. An RNA strand
Correct answer: D
Rationale: The correct answer is D: An RNA strand. During transcription, the DNA template is used to produce an RNA strand, not a codon, DNA helix, or another DNA strand. A codon is a sequence of nucleotides that specifies a particular amino acid during translation, not produced during transcription. A DNA helix refers to the double-stranded structure of DNA, which is not produced during transcription. Another DNA strand is not produced during transcription since the process involves creating an RNA copy of a specific gene.