HESI LPN
CAT Exam Practice Test
1. 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.
2. When assessing a client several hours after surgery, the nurse observes that the client grimaces and guards the incision while moving in bed. The client is diaphoretic, has a radial pulse rate of 110 beats/min, and a respiratory rate of 35 breaths/min. What assessment should the nurse perform first?
- A. Apical heart rate
- B. IV site and fluids
- C. Pain scale
- D. Temperature
Correct answer: C
Rationale: The client’s grimacing and guarding suggest pain; assessing the pain scale is crucial for addressing the discomfort. Pain management is a priority to ensure the client's well-being and comfort. Checking the apical heart rate, IV site and fluids, or temperature can be important but addressing the client's pain takes precedence in this scenario. The elevated pulse rate and respiratory rate could be indicative of pain, making the pain scale assessment essential to guide appropriate interventions.
3. A client prescribed warfarin is being taught about dietary modifications by a nurse. Which statement by the client indicates understanding of the teaching?
- A. ''I need to avoid foods high in vitamin C.''
- B. ''I should eat a consistent amount of vitamin K each day.''
- C. ''I can eat as many leafy greens as I want.''
- D. ''I should not worry about any changes in my diet.''
Correct answer: B
Rationale: The correct answer is B. Consistency in vitamin K intake is crucial for clients on warfarin to maintain stable anticoagulation levels. Option A is incorrect as vitamin C does not directly interact with warfarin. Option C is incorrect because although leafy greens are high in vitamin K, excessive consumption can affect warfarin's effectiveness. Option D is incorrect as any changes in diet, particularly in vitamin K intake, can impact the efficacy of warfarin.
4. A male client with schizophrenia tells the nurse that the hospital has installed cameras that watch him and listening devices that record what everyone says. Which nursing problem should the nurse document for this client?
- A. Noncompliance with medication related to thought broadcasting
- B. Situational self-esteem disturbance secondary to schizophrenia
- C. Disturbed sensory perception related to auditory hallucinations
- D. Impaired environmental interpretation related to paranoid delusions
Correct answer: D
Rationale: The correct answer is D: Impaired environmental interpretation related to paranoid delusions. The client's belief about cameras watching and recording him is a manifestation of paranoid delusions, indicating a misinterpretation of the environment. Choice A is incorrect because thought broadcasting is not directly related to the client's belief about surveillance equipment. Choice B is incorrect as self-esteem disturbance is not the primary issue presented. Choice C is also incorrect as the client is not experiencing auditory hallucinations but rather paranoid delusions about surveillance.
5. When assessing a client with acute asthma, the nurse is most likely to obtain which finding?
- A. Pursed lip breathing and clubbing of fingers
- B. Fever and a high-pitched inspiratory stridor
- C. A short expiratory phase and hemoptysis
- D. Cough and musical breath sounds on expiration
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.
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