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. When caring for a client with acute respiratory distress syndrome (ARDS), why does the nurse elevate the head of the bed 30 degrees?
- A. To reduce abdominal pressure on the diaphragm
- B. To promote retraction of the intercostal accessory muscles of respiration
- C. To promote bronchodilation and effective airway clearance
- D. To decrease pressure on the medullary center which stimulates breathing
Correct answer: A
Rationale: Elevating the head of the bed to 30 degrees is done to reduce abdominal pressure on the diaphragm, aiding in lung expansion and oxygenation. This position helps improve respiratory mechanics by allowing the diaphragm to move more effectively. Choice B is incorrect as elevating the head of the bed does not directly promote retraction of the intercostal accessory muscles of respiration. Choice C is incorrect because although elevating the head of the bed can assist with airway clearance, its primary purpose in ARDS is to decrease pressure on the diaphragm. Choice D is incorrect because reducing pressure on the medullary center is not the main goal of elevating the head of the bed; the focus is on enhancing lung function and oxygen exchange.
3. A male client is returned to the surgical unit following a left nephrectomy and is medicated with morphine. His dressing has a small amount of bloody drainage, and a Jackson-Pratt bulb surgical drainage device is in place. Which intervention is most important for the nurse to include in this client's plan of care?
- A. Monitor urine output hourly
- B. Assess for back muscle aches
- C. Record drainage from the drain
- D. Obtain body weight daily
Correct answer: C
Rationale: The most important intervention for the nurse to include in the client's plan of care following a left nephrectomy with a Jackson-Pratt bulb in place is to record drainage from the drain. Monitoring the drainage is crucial as it helps assess for potential complications such as hemorrhage, infection, or other issues related to the surgical site. Assessing urine output is important post-nephrectomy but not as critical as directly monitoring the drainage. Assessing for back muscle aches may be relevant for pain management but not as crucial as monitoring the drainage. Obtaining body weight daily is not directly related to assessing the surgical drain output and is less critical in this scenario.
4. A female client reports she has not had a bowel movement for 3 days, but now is defecating frequent small amounts of liquid stool. Which action should the nurse implement?
- A. Digitally check the client for a fecal impaction
- B. Increase fluid intake to promote bowel regularity
- C. Provide a high-fiber diet to facilitate bowel movements
- D. Administer a stool softener
Correct answer: A
Rationale: The correct answer is A: Digitally check the client for a fecal impaction. Small, frequent liquid stools following constipation may indicate a fecal impaction. This intervention is crucial to assess and address a potential impaction promptly. Choices B, increasing fluid intake, and C, providing a high-fiber diet, may help with bowel regularity in general cases, but they don't directly address the urgent concern of a possible impaction. Choice D, administering a stool softener, is not appropriate as the first action when a fecal impaction is suspected; it could worsen the condition by causing further liquid stool output without addressing the impaction.
5. A female client is admitted for a diabetic crisis resulting from inadequate dietary practices. After stabilization, the nurse talks to the client about her prescribed diet. What client characteristic is most important for successful adherence to the diabetic diet?
- A. Understands the importance of timing insulin administration 30 minutes before eating
- B. Frequently includes fruits and vegetables in meals and snacks
- C. Has access to someone who can assist with meal preparation and monitoring
- D. Demonstrates willingness to consistently follow the prescribed diet
Correct answer: D
Rationale: The most crucial characteristic for successful adherence to a diabetic diet is the client's willingness to consistently follow the prescribed diet plan. Option A, understanding insulin timing, is important for treatment but not directly related to dietary adherence. Option B, consuming fruits and vegetables, is a healthy practice but does not ensure adherence to a specific diabetic diet. Option C, having assistance with meal preparation, is beneficial but not as essential as the client's personal commitment to adhering to the diet consistently.
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