HESI LPN
CAT Exam Practice Test
1. Following a gunshot wound, an adult client has a hemoglobin level of 4 grams/dl (40 mmol/L SI). The nurse prepares to administer a unit of blood for an emergency transfusion. The client has AB negative blood type and the blood bank sends a unit of type A Rh negative, reporting that there is not type AB negative blood currently available. Which intervention should the nurse implement?
- A. Transfuse Type A negative blood until type AB negative is available.
- B. Recheck the client’s hemoglobin, blood type, and Rh factor.
- C. Administer normal saline solution until type AB negative is available.
- D. Obtain additional consent for the administration of type A negative blood.
Correct answer: A
Rationale: In emergency situations where AB negative blood is unavailable, type A negative blood can be transfused to a patient with AB negative blood type. Type A negative blood is compatible with AB negative blood, making it a suitable option until the correct blood type becomes available. Transfusion of Type A negative blood is crucial to address the severe anemia promptly. Rechecking the client’s hemoglobin, blood type, and Rh factor (Choice B) may delay necessary treatment. Administering normal saline solution (Choice C) is not a substitute for blood transfusion in cases of severe anemia. Obtaining additional consent for the administration of type A negative blood (Choice D) is unnecessary as the situation is emergent and the blood type is compatible.
2. A male client with hypertension, who received new antihypertensive prescriptions at his last visit returns to the clinic two weeks later to evaluate his blood pressure (BP). His BP is 158/106 mmHg and he admits that he has not been taking the prescribed medication because the drugs make him feel bad. In explaining the need for hypertension control, the nurse should stress that an elevated BP places the client at risk for which pathophysiological condition?
- A. Stroke secondary to hemorrhage
- B. Acute kidney injury due to glomerular damage
- C. Heart block due to myocardial damage
- D. Blindness secondary to cataracts
Correct answer: A
Rationale: The correct answer is A: Stroke secondary to hemorrhage. Hypertension increases the risk of stroke due to the stress and damage it causes to blood vessels, which can lead to hemorrhage. Choice B is incorrect because acute kidney injury is more commonly associated with chronic uncontrolled hypertension, not acute elevations. Choice C is incorrect as heart block is not a direct consequence of hypertension. Choice D is incorrect as hypertension does not directly cause cataracts leading to blindness.
3. 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.
4. A client admitted to the intensive care unit with syndrome of inappropriate antidiuretic hormone (SIADH) has developed osmotic demyelination. Which intervention should the nurse implement first?
- A. Patch one eye.
- B. Reorient often.
- C. Range of motion.
- D. Evaluate swallow
Correct answer: B
Rationale: Frequent reorientation is crucial for clients with neurological impairments from osmotic demyelination to prevent confusion and assist with orientation. It helps maintain a proper sense of time, place, and person, reducing disorientation. Patching one eye (Choice A) is not a priority intervention for osmotic demyelination and does not address the immediate need for reorientation. Range of motion exercises (Choice C) may be important for overall care, but reorientation takes precedence due to its impact on neurological functioning. Evaluating swallow (Choice D) is not the primary intervention needed for osmotic demyelination; it is essential but not the first priority.
5. Before administering an intramuscular injection, the nurse's finger is stuck with the needle. Which action should the nurse take?
- A. Go to the emergency room to have blood drawn
- B. Prepare the medication using a new syringe
- C. Apply clean gloves before giving the medication
- D. Review the medical history in the client's chart
Correct answer: B
Rationale: In this scenario, if the nurse's finger is stuck with the needle before administering the injection, the correct action is to prepare the medication using a new syringe. This step is crucial to prevent contamination and ensure the safety of the patient. Going to the emergency room to have blood drawn is unnecessary and does not address the immediate issue of contamination. Applying clean gloves is important for infection control but does not address the potential contamination from the needlestick. Reviewing the medical history in the client's chart is important for overall patient care but is not the priority in this situation where immediate action is required to prevent harm.
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