HESI RN

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. In this case, with 20 grams of magnesium sulfate in 500 mL of solution, 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. This calculation ensures the correct dose is delivered within the specified time frame.

2. When performing the daily head-to-toe assessment of a 1-day-old newborn, the nurse observes a yellow tint to the skin on the forehead, sternum, and abdomen. Which action should the nurse take?

• A. Measure bilirubin levels using transcutaneous bilirubinometry.
• B. Evaluate cord blood Coombs test results.
• C. Review maternal medical records for blood type and Rh factor.
• D. Prepare the newborn for phototherapy.

Correct Answer: A

Rationale: The presence of a yellow tint on the skin of a newborn suggests jaundice. The initial step in managing jaundice in a newborn is to measure bilirubin levels, typically done using transcutaneous bilirubinometry. This measurement helps determine the severity of jaundice and guides appropriate treatment interventions. Evaluating cord blood Coombs test results or reviewing maternal medical records for blood type and Rh factor are not the immediate actions indicated when jaundice is suspected. Phototherapy may be considered after confirming elevated bilirubin levels and assessing the need for treatment.

3. A woman who delivered a 9-pound baby via cesarean section under spinal anesthesia is recovering in the post-anesthesia care unit. Her fundus is firm at the umbilicus, and a continuous trickle of bright red blood with no clots is observed by the nurse. Which action should the nurse implement?

• A. Assess her blood pressure.
• B. Apply an ice pack to the perineum.
• C. Allow the infant to breastfeed.
• D. Massage the fundus vigorously.

Correct Answer: A

Rationale: In this situation, continuous bleeding despite a firm fundus suggests a possible laceration. The appropriate action for the nurse to take is to assess the woman's blood pressure. This helps determine the severity of blood loss and guides further interventions, such as identifying the need for additional assessments or interventions to control bleeding.

4. The client is admitted in active labor with a cervix that is 3 cm dilated, 50% effaced, and the presenting part at 0 station. An hour later, the client expresses the need to go to the bathroom. Which action should the nurse implement first?

• A. Palpate the client’s bladder.
• B. Check the pH of the vaginal fluid.
• C. Review the fetal heart rate pattern.
• D. Determine cervical dilation.

Correct Answer: D

Rationale: The nurse should prioritize determining cervical dilation as it helps in assessing the progress of labor and ensures it is safe for the client to move. Changes in cervical dilation may indicate the advancement of labor, warranting appropriate interventions or restrictions on movement to prevent complications.

5. A new mother who is breastfeeding her 4-week-old infant and has type 1 diabetes reports that her insulin needs have decreased since the birth of her child. Which action should the nurse implement?

• A. Inform her that a decreased need for insulin occurs while breastfeeding.
• B. Counsel her to increase her caloric intake.
• C. Advise the client to breastfeed more frequently.
• D. Schedule an appointment for the client with the diabetic nurse educator.

Correct Answer: A

Rationale: During breastfeeding, insulin needs often decrease due to the metabolic demands of milk production. Therefore, the nurse should inform the client that this decrease in insulin requirements is a normal response to breastfeeding. It is essential for healthcare providers to educate clients about this physiological change to prevent unnecessary concerns or adjustments to insulin therapy.