HESI LPN
Adult Health Exam 1 Chamberlain
1. When counting a client's radial pulse, the nurse notes the pulse is weak and irregular. To record the most accurate heart rate, what should the nurse do?
- A. Recheck the radial pulse in thirty minutes
- B. Palpate the radial pulse for thirty seconds and double the rate
- C. Count the apical pulse rate for sixty seconds
- D. Compare the radial pulse rate bilaterally and record the higher rate
Correct answer: C
Rationale: The correct answer is to count the apical pulse rate for sixty seconds. The apical pulse is more accurate, especially when peripheral pulses are weak or irregular. Counting the apical pulse for a full minute provides a more precise heart rate measurement. Option A is incorrect because waiting for thirty minutes is unnecessary and could delay potential interventions. Option B is incorrect because doubling the radial pulse rate may not provide an accurate representation of the heart rate. Option D is incorrect because comparing radial pulses bilaterally does not give the most accurate heart rate measurement; the apical pulse is preferred in this situation.
2. A client with a diagnosis of rheumatoid arthritis is prescribed methotrexate. What is the primary action of this medication?
- A. Increases joint lubrication
- B. Reduces inflammation by suppressing the immune system
- C. Enhances bone density
- D. Stimulates cartilage regeneration
Correct answer: B
Rationale: The correct answer is B: Methotrexate is an immunosuppressant that works by suppressing the immune system, thereby reducing inflammation in rheumatoid arthritis. Methotrexate does not directly increase joint lubrication (Choice A) as its primary action is on the immune system. Choices C and D are incorrect since methotrexate does not enhance bone density or stimulate cartilage regeneration. It is crucial for healthcare providers to understand the mechanism of action of medications to provide safe and effective care to patients.
3. The nurse is caring for a client with a history of seizure disorder who is receiving phenytoin (Dilantin). Which laboratory value is most important to monitor?
- A. Phenytoin level
- B. Sodium level
- C. Hemoglobin level
- D. White blood cell count
Correct answer: A
Rationale: Corrected Rationale: Monitoring the phenytoin level is crucial to ensure it is within the therapeutic range and to prevent toxicity. Monitoring sodium level is important in clients receiving lithium, not phenytoin. Hemoglobin level and white blood cell count are not directly related to phenytoin therapy monitoring.
4. The nurse is assessing a client with an IV infusion of normal saline. The client reports pain and swelling at the IV site. What should the nurse do first?
- A. Slow the rate of infusion
- B. Apply a warm compress to the site
- C. Elevate the affected arm
- D. Discontinue the IV infusion
Correct answer: D
Rationale: The correct answer is to discontinue the IV infusion. Pain and swelling at the IV site may indicate infiltration or phlebitis, which requires immediate discontinuation of the infusion to prevent further complications. Continuing the infusion can lead to tissue damage or infection. Slowing the rate of infusion, applying a warm compress, or elevating the affected arm would not address the underlying issue of infiltration or phlebitis and could potentially worsen the condition by allowing more fluid to infiltrate the tissues.
5. A client is scheduled for an abdominal ultrasound in the morning and has been instructed to fast overnight. The client asks the nurse why fasting is necessary. What is the best response?
- A. It helps reduce the production of intestinal gases.
- B. It ensures clearer imaging by emptying the stomach.
- C. It prevents the risk of aspiration during the procedure.
- D. It is a standard procedure for all surgical interventions.
Correct answer: B
Rationale: The correct answer is B: 'It ensures clearer imaging by emptying the stomach.' Fasting before an abdominal ultrasound is essential to empty the stomach, allowing for better visualization of the abdominal organs. This improves the quality of the imaging and enhances diagnostic accuracy. Choices A, C, and D are incorrect because reducing intestinal gases, preventing aspiration, and being a standard procedure for surgical interventions are not the primary reasons for fasting before an abdominal ultrasound.
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