HESI LPN
CAT Exam Practice Test
1. The urinary drainage of a client with continuous bladder irrigation is becoming increasingly red. Which intervention should the nurse implement?
- A. Increase the irrigation rate
- B. Lower the head of the bed
- C. Milk the catheter tubing
- D. Evaluate for fluid overload
Correct answer: A
Rationale: Increasing the irrigation rate can help clear any blood clots and reduce the redness in the urinary drainage. This intervention aims to improve the flushing of the bladder and potentially resolve the issue. Lowering the head of the bed would not directly address the red urinary drainage. Milking the catheter tubing is not recommended as it can cause trauma to the catheter or bladder, leading to further complications. While evaluating for fluid overload is an important nursing consideration, it does not directly address the immediate concern of redness in the urinary drainage, which requires a focused intervention to clear any blockages or clots in the system.
2. After years of struggling with weight management, a middle-aged man is evaluated for gastroplasty. He has experienced difficulty managing his diabetes mellitus and hypertension, but he is approved for surgery. Which intervention is most important for the nurse to include in this client’s plan of care?
- A. Monitor for signs of depression
- B. Apply sequential compression stockings
- C. Provide a wide variety of meal choices
- D. Observe for signs of depression
Correct answer: D
Rationale: Observing for signs of depression is crucial in this patient's plan of care as depression can impact his overall recovery and management post-surgery. Depression is common in individuals struggling with weight management, diabetes mellitus, and hypertension. Monitoring for urinary incontinence (Choice A) is not the priority in this case as the patient is undergoing gastroplasty for weight management, not a urinary issue. Applying sequential compression stockings (Choice B) is important for preventing deep vein thrombosis in immobile patients but is not the priority in this scenario. Providing a wide variety of meal choices (Choice C) is not the most crucial intervention at this stage, as post-gastroplasty dietary restrictions are essential for successful weight management.
3. A male client with angina pectoris is being discharged from the hospital. What instructions should the nurse plan to include in the discharge teaching?
- A. Engage in physical exercise before eating to help decrease cholesterol levels.
- B. Avoid walking briskly in cold weather to prevent a decrease in cardiac output.
- C. Keep nitroglycerin in a light-colored plastic bottle and readily available.
- D. Avoid all isometric exercises, but walk regularly.
Correct answer: C
Rationale: The correct answer is to keep nitroglycerin in a light-colored container and readily available. Nitroglycerin should be protected from light to maintain its effectiveness. Option A is incorrect because physical exercise immediately before eating can trigger angina. Option B is incorrect as cold weather can exacerbate angina symptoms. Option D is incorrect as isometric exercises can increase the workload on the heart, which is not recommended for individuals with angina.
4. A heparin infusion is prescribed for a client who weighs 220 pounds. After administering a bolus dose of 80 units/kg, the nurse calculates the infusion rate for the heparin sodium at 18 units/kg/hour. The available solution is Heparin Sodium 25,000 units in 5% Dextrose Injection 250 ml. The nurse should program the infusion pump to deliver how many ml/hour?
- A. 18
- B. 27
- C. 36
- D. 45
Correct answer: B
Rationale: To calculate the infusion rate, first, find the total dose required per hour, which is the patient's weight (220 pounds) multiplied by the prescribed rate (18 units/kg/hour). This equals 3960 units/hour. Next, determine how many ml of the solution contain 25,000 units; this is 250 ml. Divide the total dose required per hour (3960 units) by the units per ml (25,000 units/250 ml) to find how many ml are needed per hour. This results in 27 ml/hour. Therefore, the nurse should program the infusion pump to deliver 27 ml/hour. Choice A (18) is incorrect as it does not account for the concentration of the heparin solution. Choices C (36) and D (45) are incorrect as they do not reflect the accurate calculations based on the patient's weight and the heparin concentration in the solution.
5. A client is receiving lidocaine IV at 3 mg/minute. The pharmacy dispenses a 500 ml IV solution of normal saline (NS) with 2 grams of lidocaine. The nurse should regulate the infusion pump to deliver how many ml/hour?
- A. 18
- B. 27
- C. 36
- D. 45
Correct answer: D
Rationale: The infusion rate is calculated based on the concentration of lidocaine and the prescribed rate of infusion. First, convert lidocaine's weight to milligrams (2 grams = 2000 mg). Then, use the formula: (Total volume in ml * dose in mg) / 60 minutes. For this case, (500 ml * 2000 mg) / 60 minutes = 45 ml/hour. Therefore, the correct answer is D. Choices A, B, and C are incorrect as they do not reflect the accurate calculation based on the provided concentration and infusion rate.
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