HESI LPN
CAT Exam Practice Test
1. An adult suffered burns to the face and chest resulting from a grease fire. On admission, the client was intubated, and a 2-liter bolus of normal saline was administered IV. Currently, the normal saline is infusing at 250 ml/hour. The client’s heart rate is 120 beats/minute, blood pressure is 90/50 mmHg, respirations are 12 breaths/minute over the ventilated 12 breaths for a total of 24 breaths/minute, and the central venous pressure (CVP) is 4 mm H2O. Which intervention should the nurse implement?
- A. Increase the rate of normal saline infusion
- B. Infuse an additional bolus of normal saline
- C. Lower the head of the bed to a recumbent position
- D. Bring a tracheostomy tray to the bedside
Correct answer: B
Rationale: The correct intervention is to infuse an additional bolus of normal saline. The client's presentation with a heart rate of 120 beats/minute, hypotensive blood pressure of 90/50 mmHg, and low CVP of 4 mm H2O indicates hypovolemic shock. Administering more normal saline can help in restoring intravascular volume and improving perfusion. Increasing the rate of normal saline infusion (Choice A) is not the best choice as it may lead to fluid overload. Lowering the head of the bed to a recumbent position (Choice C) could worsen hypotension by reducing venous return. Bringing a tracheostomy tray to the bedside (Choice D) is not a priority at this time as the client is already intubated, and the immediate concern is addressing the hypovolemia.
2. A young adult client was admitted 36 hours ago for a head injury that occurred as a result of a motorcycle accident. In the last 4 hours, the client’s urine output has increased to over 200 ml/hour. Before reporting the finding to the healthcare provider, which intervention should the nurse implement?
- A. Obtain capillary blood samples for glucose every 2 hours
- B. Measure oral secretions suctioned during the last 4 hours
- C. Evaluate the urine osmolality and serum osmolality values
- D. Obtain blood pressure and assess for dependent edema
Correct answer: C
Rationale: The correct answer is to evaluate the urine osmolality and serum osmolality values. The increased urine output following a head injury could indicate diabetes insipidus, a condition characterized by excessive urination and extreme thirst. Evaluating osmolality is crucial for diagnosing diabetes insipidus. Choice A is incorrect because obtaining capillary blood samples for glucose every 2 hours is not the priority in this situation. Choice B is irrelevant to the client's current symptom of increased urine output. Choice D is also not the most appropriate intervention as the focus should be on assessing for a potential endocrine issue related to the increased urine output.
3. A male client with schizophrenia is jerking his neck and smacking his lips. Which finding indicates to the nurse that he is experiencing an irreversible side effect of antipsychotic agents?
- A. Cramping muscular pain
- B. Worming movements of the tongue
- C. Decreased tendon reflexes
- D. Dry oral mucous membranes
Correct answer: B
Rationale: The correct answer is B: Worming movements of the tongue. Worming movements of the tongue, known as tardive dyskinesia, are an irreversible side effect of antipsychotic medications. Tardive dyskinesia is characterized by involuntary, repetitive movements of the tongue, lips, face, trunk, and extremities. Cramping muscular pain (Choice A) is more indicative of dystonia, an extrapyramidal side effect that can be treated effectively with antiparkinsonian medications. Decreased tendon reflexes (Choice C) are not typically associated with irreversible side effects of antipsychotic agents. Dry oral mucous membranes (Choice D) are not specific to irreversible side effects of antipsychotic medications.
4. Several clients on a busy antepartum unit are scheduled for procedures that require informed consent. Which situation should the nurse explore further before witnessing the client's signature on the consent form?
- A. The client was medicated for pain with a narcotic analgesic IM 6 hours ago
- B. A 15-year-old primigravida who has been self-supporting for the past 6 months
- C. The obstetrician explained a procedure that a neurologist will perform
- D. The client is illiterate but verbalizes understanding and consent for the procedure
Correct answer: D
Rationale: The correct answer is D because an illiterate client may require additional support to ensure they fully comprehend the information provided in the informed consent process. It is crucial to confirm that the client truly understands the nature of the procedure, its risks, and benefits. While it is important to assess pain control (choice A), a client's previous medication administration does not directly impact their ability to understand the consent process. Choice B, a 15-year-old primigravida who has been self-supporting, may legally provide informed consent depending on the jurisdiction and circumstances, so this situation may not require further exploration. Choice C, explaining a procedure by a different specialist, does not necessarily require additional exploration before witnessing the client's consent.
5. A client taking clopidogrel reports the onset of diarrhea. Which nursing action should the nurse implement first?
- A. Observe the appearance of the stool
- B. Assess the client’s skin turgor
- C. Review the client’s laboratory values
- D. Auscultate the client’s bowel sounds
Correct answer: A
Rationale: Observing the stool’s appearance should be implemented first as it helps determine the nature and possible severity of the diarrhea, which is essential in managing the side effect. Assessing skin turgor (Choice B) is not the priority in this situation. Reviewing laboratory values (Choice C) can provide additional information but is not the initial step. Auscultating bowel sounds (Choice D) is not the priority when the client is experiencing diarrhea.
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