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. An 18-year-old gravida 1, at 41-weeks gestation, is undergoing an oxytocin (Pitocin) induction and has an epidural catheter in place for pain control. With each of the last three contractions, the nurse notes a late deceleration. The client is repositioned, and oxygen provided, but the late decelerations continue to occur with each contraction. What action should the nurse take first?
- A. Prepare for immediate cesarean birth
- B. Turn off the oxytocin (Pitocin) infusion
- C. Notify the anesthesiologist that the epidural infusion needs to be disconnected
- D. Apply an internal fetal monitoring device and continue to monitor carefully
Correct answer: B
Rationale: In the scenario described, the nurse notes late decelerations during contractions despite repositioning and oxygen administration. Late decelerations are often associated with uteroplacental insufficiency, which can be exacerbated by increased uterine activity stimulated by oxytocin. The initial action to manage late decelerations is to turn off the oxytocin infusion to reduce uterine stimulation. This step aims to improve fetal oxygenation and prevent further stress on the fetus. Immediate cesarean birth may be necessary if the late decelerations persist or worsen despite discontinuing the oxytocin infusion. Notifying the anesthesiologist to disconnect the epidural infusion or applying an internal fetal monitoring device are not the first-line interventions for managing late decelerations.
3. A male client reports the onset of numbness and tingling in his fingers and around his mouth. Which lab value is important for the nurse to review before contacting the health care provider?
- A. capillary glucose
- B. urine specific gravity
- C. Serum calcium
- D. white blood cell count
Correct answer: C
Rationale: The correct answer is C: Serum calcium. Numbness and tingling can be indicative of hypocalcemia, which can affect the nervous system. Reviewing serum calcium levels is crucial to address this potential issue. Options A, B, and D are not directly related to the symptoms described by the client and are not typically associated with numbness and tingling around the mouth and fingers. Capillary glucose levels are more relevant in assessing for diabetes or monitoring glucose control. Urine specific gravity is useful in evaluating hydration status. White blood cell count is typically checked to assess infection or immune response, which are not indicated by the client's symptoms of numbness and tingling.
4. 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.
5. What is the best response when a two-year-old boy begins to cry when his mother starts to leave?
- A. Say, 'Let's wave bye-bye to Mommy.'
- B. Say, 'Let me read this book to you.'
- C. Say, 'Two-year-olds usually stop crying the minute the parent leaves.'
- D. Say, 'Now, now, be a big boy, Mommy will be back soon.'
Correct answer: B
Rationale: The best response in this situation is to offer a distraction to the child. Reading a book can help soothe the child during separation from the parent by redirecting their attention. Choice A might not be as effective as providing a distraction like reading a book. Choice C dismisses the child's feelings and generalizes behavior, which is not helpful. Choice D diminishes the child's emotions and does not provide a constructive way to help the child cope with the separation anxiety.
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