an adult suffered burns to face and chest resulting from a grease fire on admission the client was intubated and a 2 liter bolus of normal saline was

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 client with chronic alcoholism is admitted with a decreased serum magnesium level. Which snack option should the nurse recommend to this client?

A. Cheddar cheese and crackers
B. Carrot and celery sticks
C. Beef bologna sausage slices
D. Dry roasted almonds

Correct answer: D

Rationale: Dry roasted almonds are the most suitable snack option for a client with chronic alcoholism and a decreased serum magnesium level because they are high in magnesium. Magnesium is essential in addressing the deficiency. Cheddar cheese and crackers (Choice A) do not contain as much magnesium as almonds. Carrot and celery sticks (Choice B) are healthy choices but do not provide a significant amount of magnesium. Beef bologna sausage slices (Choice C) are not a good choice as processed meats are not rich in magnesium.

3. To evaluate the client's therapeutic response to lactulose for signs of hepatic encephalopathy, which assessment should the nurse obtain?

A. Level of consciousness
B. Percussion of abdomen
C. Serum electrolytes
D. Blood glucose

Correct answer: A

Rationale: The correct answer is A: Level of consciousness. Monitoring the client's level of consciousness is essential in evaluating the effectiveness of lactulose in treating hepatic encephalopathy. Lactulose helps reduce blood ammonia levels by promoting the excretion of ammonia in the stool, thereby improving the client's mental status. Assessing the client's level of consciousness helps determine if the medication is effectively managing hepatic encephalopathy symptoms. Choices B, percussion of the abdomen, and D, blood glucose, are not directly related to evaluating the therapeutic response to lactulose for hepatic encephalopathy. Choice C, serum electrolytes, while important in overall patient care, is not the primary assessment to determine lactulose's effectiveness in treating hepatic encephalopathy.

4. The healthcare provider changes a client’s medication prescription from IV to PO administration and doubles the dose. The nurse notes in the drug guide that the prescribed medication, when given orally, has a high first-pass effect and reduces bioavailability. What action should the nurse implement?

A. Continue administering the medication via the IV route.
B. Give half the prescribed oral dose until consulting the provider.
C. Administer the medication orally as prescribed.
D. Consult with the pharmacist regarding the prescription change.

Correct answer: D

Rationale: The correct action for the nurse to implement is to consult with the pharmacist regarding the change in prescription. With the high first-pass effect of the medication when given orally, it reduces its bioavailability, meaning a dosage adjustment may be necessary to achieve the desired therapeutic effect. Continuing to administer the medication via the IV route (choice A) is not appropriate as the prescription has been changed to oral administration. Giving half the prescribed oral dose until consulting the provider (choice B) is not recommended without proper guidance, which should come from consulting with the pharmacist. Simply administering the medication orally as prescribed (choice C) without addressing the potential issue of reduced bioavailability may lead to suboptimal treatment outcomes.

5. A client with a large pleural effusion undergoes a thoracentesis. Following the procedure, which assessment finding warrants immediate intervention by the nurse?

A. The client has asymmetrical chest wall expansion
B. The client complains of pain at the insertion site
C. The client's chest x-ray indicates decreased pleural effusion
D. The client's arterial blood gases show pH 7.35, PaO2 85, PaCO2 35, HCO3 26

Correct answer: A

Rationale: Asymmetrical chest wall expansion is a critical finding post-thoracentesis as it may suggest a pneumothorax, requiring immediate intervention to prevent further complications. The other options, such as pain at the insertion site (Choice B), decreased pleural effusion on chest x-ray (Choice C), and normal arterial blood gases within acceptable ranges (Choice D) do not indicate an immediate need for intervention like asymmetrical chest wall expansion does.