HESI LPN
CAT Exam Practice
1. The nurse is assessing a client with Addison's disease who is weak, dizzy, disoriented, and has dry oral mucous membranes, poor skin turgor, and sunken eyes. Vital signs are blood pressure 94/44, heart rate 123 beats/minute, respiration 22 breaths/minute. Which intervention should the nurse implement first?
- A. Assess extremity strength and resistance
- B. Report a sodium level of 132 mEq/L or mmol/L (SI units)
- C. Measure and record the cardiac QRS complex
- D. Check current finger stick glucose
Correct answer: D
Rationale: The client’s symptoms suggest possible adrenal crisis or hypoglycemia. Checking glucose is a priority to rule out hypoglycemia, which requires immediate intervention. The client is presenting with symptoms indicative of hypoglycemia, which can be life-threatening if not promptly addressed. Assessing extremity strength, reporting sodium levels, or measuring the cardiac QRS complex are not the most urgent actions in this scenario.
2. The nurse is assessing a 3-month-old infant who had a pylorotomy yesterday. This child should be medicated for pain based on which finding?
- A. Restlessness
- B. Clenched Fist
- C. Increased pulse rate
- D. Increased respiratory rate
Correct answer: A
Rationale: In infants, restlessness can be a significant indicator of discomfort or pain, necessitating appropriate pain management. While choices B, C, and D can also be associated with pain, restlessness is a more general and reliable indicator in this scenario. A clenched fist might indicate pain or distress, but it is not as specific as restlessness in assessing pain in infants. Increased pulse rate and respiratory rate can be influenced by various factors other than pain, making them less reliable indicators of pain in this context.
3. After assessing an older adult with a suspected cerebrovascular accident (CVA), the nurse documents the client's right upper arm weakness and slurred speech. When the client complains of a severe headache and nausea, and the neurological assessment remains unchanged, which action should the nurse implement first?
- A. Administer an oral analgesic with antiemetic
- B. Collect blood for coagulation times
- C. Send the client for a computed tomography scan of the brain
- D. Obtain a history of medication use, recent surgery, or injury
Correct answer: C
Rationale: In this scenario, the priority action for the nurse is to send the client for a computed tomography (CT) scan of the brain. A CT scan is crucial in assessing acute changes or bleeding that could influence treatment decisions in a suspected cerebrovascular accident (CVA). While addressing symptoms like headache and nausea is important, ruling out acute changes in the brain with a CT scan takes precedence in this situation. Collecting blood for coagulation times may be necessary but is not the initial priority. Obtaining a history of medication use, recent surgery, or injury is also important but not the first action to take when a CVA is suspected.
4. A client with active tuberculosis (TB) is receiving isoniazid (INH) and rifampin (RMP) daily, so direct observation therapy (DOT) is initiated while the client is hospitalized. Which instruction should the nurse provide this client?
- A. Describe feelings about taking daily medications
- B. Take medications in the presence of the nurse
- C. Notify the nurse after self-medication is completed
- D. Keep a daily record of all medications taken
Correct answer: B
Rationale: The correct instruction for the nurse to provide the client undergoing direct observation therapy for TB is to take medications in the presence of the nurse. This approach ensures that the client is actually taking the medications as prescribed, reducing the risk of noncompliance. Choice A is incorrect because the focus should be on ensuring the client physically takes the medications rather than discussing feelings. Choice C is incorrect as it does not ensure direct observation. Choice D is incorrect because self-reporting or keeping a record does not guarantee that the client is actually taking the medications.
5. The nurse is assessing an infant with pyloric stenosis. Which pathophysiological mechanism is the most likely consequence of this infant’s clinical picture?
- A. Metabolic acidosis
- B. Metabolic alkalosis
- C. Respiratory alkalosis
- D. Respiratory acidosis
Correct answer: B
Rationale: Pyloric stenosis often leads to metabolic alkalosis due to the loss of gastric acid from vomiting. Metabolic acidosis would not be expected in pyloric stenosis as there is no excessive acid accumulation. Respiratory alkalosis and respiratory acidosis are not typically associated with pyloric stenosis, making them incorrect choices.
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