HESI LPN
Medical Surgical HESI
1. A client is currently receiving an infusion labeled as 5% dextrose injection 500 ml with heparin sodium 25,000 units at 14 mL/hour per pump. A prescription is received to change the rate of the infusion to heparin 1,000 units/hour. How many ml/hour should the nurse program the infusion pump?
- A. 16 ml/hour.
- B. 18 ml/hour.
- C. 20 ml/hour.
- D. 22 ml/hour.
Correct answer: C
Rationale: To deliver 1,000 units/hour from a solution with 25,000 units in 500 ml, the rate should be set to 20 ml/hour. This is calculated by determining that the solution has 50 units/ml (25,000 units / 500 ml = 50 units/ml) and then dividing the required 1,000 units/hour by 50 units/ml, resulting in 20 ml/hour. Therefore, the nurse should program the infusion pump to deliver heparin at 20 ml/hour. Choices A, B, and D are incorrect as they do not align with the calculated rate of 20 ml/hour.
2. A visitor comes to the nursing station and tells the nurse that a client and his relative had a fight, and that the client is now lying unconscious on the floor. What is the most important action the LPN/LVN needs to take?
- A. Ask the client if he is okay.
- B. Call security from the room.
- C. Find out if there is anyone else in the room.
- D. Ask security to make sure the room is safe.
Correct answer: D
Rationale: The most critical action for the LPN/LVN to take in this situation is to ask security to ensure the room is safe. This step is crucial to prevent any further harm to the unconscious client or others. While it is important to assess the client's condition, ensuring safety takes precedence. Calling security from the room may expose the LPN/LVN to potential danger without confirming the safety of the environment first. Finding out if anyone else is in the room can wait until safety is established to avoid unnecessary risks.
3. A newborn who was born post-term is being assessed by a nurse. Which of the following findings should the nurse expect?
- A. A Rh-negative mother who has an Rh-positive infant
- B. A Rh-positive mother who has an Rh-negative infant
- C. A Rh-positive mother who has an Rh-positive infant
- D. A Rh-negative mother who has an Rh-negative infant
Correct answer: A
Rationale: The correct answer is A: 'A Rh-negative mother who has an Rh-positive infant.' In cases where the newborn is born post-term, the mismatched Rh factor between the mother (Rh-negative) and the infant (Rh-positive) can lead to hemolytic disease of the newborn. This condition occurs when maternal antibodies attack fetal red blood cells, causing hemolysis. This can result in jaundice, anemia, and other serious complications for the infant. Choices B, C, and D are incorrect because they do not reflect the mismatched Rh factor scenario that poses a risk for hemolytic disease of the newborn.
4. A 16-year-old female client returns to the clinic because she is pregnant for the third time by a new boyfriend. Which vaccine should the nurse plan to administer?
- A. MMR
- B. Hepatitis B
- C. Human papillomavirus
- D. Pneumococcal
Correct answer: B
Rationale: The correct answer is B, Hepatitis B. The Hepatitis B vaccine is crucial for pregnant women to prevent transmission of the virus to the baby during childbirth. Option A, MMR (Measles, Mumps, Rubella) vaccine, is not indicated during pregnancy. Option C, Human papillomavirus vaccine, is recommended for prevention of HPV infections but is not specifically indicated during pregnancy. Option D, Pneumococcal vaccine, is important for certain populations but is not the priority vaccine for a pregnant woman in this scenario.
5. A client with a history of congestive heart failure (CHF) is admitted with dyspnea and a productive cough. What is the most important assessment for the LPN/LVN to perform?
- A. Measure the client's urine output.
- B. Auscultate the client's lung sounds.
- C. Assess the client's apical pulse.
- D. Check the client's blood pressure.
Correct answer: B
Rationale: Auscultating lung sounds is crucial for assessing the extent of congestion in a client with CHF. The presence of crackles or wheezing can indicate fluid accumulation in the lungs, a common complication of CHF. Monitoring urine output (Choice A) is important to assess renal function but is not the priority in this situation. While assessing the apical pulse (Choice C) and checking blood pressure (Choice D) are important in managing CHF, they do not provide immediate information about the respiratory status and congestion level in the lungs, making auscultating lung sounds the most critical assessment.