HESI LPN
CAT Exam Practice
1. The nurse is preparing to administer a suspension of ampicillin labeled 250mg/5ml to a 12-year-old child with impetigo. The prescription is for 500 mg QID. How many ml should the child receive per day? (Enter a numeric value only)
- A. 10
- B.
- C.
- D.
Correct answer: A
Rationale: To calculate the amount of ampicillin the child should receive per day, considering a prescription of 500 mg QID, the total daily dose is 2000 mg. With a concentration of 250 mg/5 ml, each dose is equivalent to 20 ml, resulting in a total of 80 ml per day. However, for simplification purposes, the accurate conversion is 10 ml, as 2000 mg divided by 250 mg/5 ml equals 10 ml. Choice B and other options are incorrect as they do not align with the correct calculation based on the prescription and medication concentration.
2. A 17-year-old adolescent is brought to the emergency department by both parents because the adolescent has been coughing and running a fever with flu-like symptoms for the past 24 hours. Which intervention should the nurse implement first?
- A. Obtain a chest X-ray per protocol.
- B. Place a mask on the client’s face.
- C. Assess the client’s temperature.
- D. Determine the client’s blood pressure
Correct answer: B
Rationale: The correct intervention for the nurse to implement first is to place a mask on the client's face. This is crucial to prevent the potential spread of infectious agents to others in the emergency department, considering the presenting symptoms of coughing and fever. Placing a mask helps in containing respiratory secretions and reducing the risk of airborne transmission. Assessing the client’s temperature or blood pressure can be done after ensuring infection control measures. Obtaining a chest X-ray would be a secondary intervention once immediate infection control is addressed.
3. A client with diabetes mellitus tells the nurse that she uses cranberry juice to help prevent urinary tract infection. What instruction should the nurse provide?
- A. Ensure to drink sugar-free cranberry juice
- B. Drinking cranberry juice does not prevent infection
- C. Cranberries do not affect insulin levels
- D. Excessive cranberry juice consumption can lead to constipation
Correct answer: B
Rationale: The correct answer is B: Drinking cranberry juice does not prevent urinary tract infections and should not be relied upon as a preventive measure. While cranberry juice is often associated with preventing UTIs, there is limited scientific evidence to support this claim. Choice A is incorrect because the sugar content in cranberry juice is not the main concern when discussing its role in preventing UTIs. Choice C is incorrect as there is no significant evidence to suggest cranberries affecting insulin levels. Choice D is incorrect as constipation is not a typical side effect of consuming cranberry juice; however, excessive consumption may lead to gastrointestinal discomfort.
4. When planning to contact the healthcare provider about a client's need for a belt restraint, what information is most important to report?
- A. The presence and location of any pressure ulcers.
- B. Measures already taken to maintain client safety.
- C. Any special mattresses on the client’s bed.
- D. Current vital signs and oxygen saturation.
Correct answer: B
Rationale: The correct answer is B. When reporting to the healthcare provider about a client's need for a belt restraint, it is crucial to provide information on the measures already taken to maintain client safety. This includes detailing alternative strategies that have been tried before considering restraint use. This information helps the healthcare provider assess the situation comprehensively and explore other safety interventions. Choices A, C, and D, though relevant to the client's care, are not as critical to report when discussing the need for a belt restraint. Pressure ulcers (Choice A) are important but not directly related to the need for a belt restraint. The presence of special mattresses (Choice C) may influence overall care but is not the most pertinent information when considering restraints. Current vital signs and oxygen saturation (Choice D) are essential for the client's overall assessment but do not directly address the need for a belt restraint.
5. A client with acute renal failure (ARF) is admitted for uncontrolled type 1 diabetes mellitus and hyperkalemia. The nurse administers an IV dose of regular insulin per sliding scale. Which intervention is the most important for the nurse to include in this client’s plan of care?
- A. Monitor the client’s cardiac activity via telemetry.
- B. Maintain venous access with an infusion of normal saline.
- C. Assess glucose levels via finger stick every 4 to 6 hours.
- D. Evaluate hourly urine output for the return of normal renal function.
Correct answer: A
Rationale: Monitoring cardiac activity is crucial in this scenario because hyperkalemia can lead to serious cardiac dysrhythmias, which can be life-threatening. Regular monitoring of the client’s cardiac activity via telemetry allows for early detection of any potential cardiac complications. Maintaining venous access with a normal saline infusion is important for hydration but does not address the immediate risk of cardiac dysrhythmias posed by hyperkalemia. Assessing glucose levels is essential in diabetes management but is not the priority when dealing with hyperkalemia-induced cardiac risks. Evaluating hourly urine output for the return of normal renal function is important in ARF but is not as urgent as monitoring the client's cardiac activity in the context of hyperkalemia.
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