HESI LPN
CAT Exam Practice Test Questions
Question 1 of 5
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?
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.
Question 2 of 5
When assessing a client with acute asthma, the nurse is most likely to obtain which finding?
Correct Answer: D
Rationale: When assessing a client with acute asthma, a cough and wheezing or musical breath sounds on expiration are typical findings. Pursed lip breathing and clubbing of fingers (choice A) are not common in acute asthma but could be seen in chronic respiratory conditions. Fever and high-pitched inspiratory stridor (choice B) are more indicative of croup or epiglottitis. A short expiratory phase and hemoptysis (choice C) are not typical findings in acute asthma.
Question 3 of 5
What action should the nurse implement for a female client with cancer who has a good appetite but experiences nausea whenever she smells food cooking?
Correct Answer: A
Rationale: The correct action for the nurse to implement is to encourage family members to cook meals outdoors and bring the cooked food inside. This strategy can help reduce the smell of cooking food and potentially alleviate the client's nausea triggered by food smells. Assessing the client's mucus membranes (choice C) is not directly related to the client's symptom of nausea triggered by food smells. Instructing the client to take an antiemetic before every meal (choice D) may not address the root cause of the issue, which is the smell of cooking food. Advising the client to replace cooked foods with nutritional supplements (choice B) does not address the immediate problem of food odors triggering nausea.
Question 4 of 5
To manage the client's constipation, which suggestions should the nurse provide? (Select all that apply)
Correct Answer: C
Rationale: The correct answer is C. Increasing fluid intake is essential for managing constipation. Adequate hydration helps soften stool and promotes bowel movements. Choices A and B are incorrect as decreasing laxative use without medical advice and suggesting specific foods like oatmeal with stewed prunes may not be suitable for every individual with constipation. Choice D is also incorrect as while seeking help with meal preparation can indirectly aid in managing constipation, the immediate need is to increase fluid intake.
Question 5 of 5
A male client with hypertension, who received new antihypertensive prescriptions at his last visit returns to the clinic two weeks later to evaluate his blood pressure (BP). His BP is 158/106 mmHg and he admits that he has not been taking the prescribed medication because the drugs make him feel bad. In explaining the need for hypertension control, the nurse should stress that an elevated BP places the client at risk for which pathophysiological condition?
Correct Answer: A
Rationale: The correct answer is A: Stroke secondary to hemorrhage. Hypertension increases the risk of stroke due to the stress and damage it causes to blood vessels, which can lead to hemorrhage. Choice B is incorrect because acute kidney injury is more commonly associated with chronic uncontrolled hypertension, not acute elevations. Choice C is incorrect as heart block is not a direct consequence of hypertension. Choice D is incorrect as hypertension does not directly cause cataracts leading to blindness.