HESI Fundamentals Practice Exam

Correct Answer: A

Rationale: The correct dietary instruction for a client taking warfarin is to avoid foods high in vitamin K. Warfarin is an anticoagulant that works by inhibiting vitamin K-dependent clotting factors. Consuming foods high in vitamin K, such as leafy green vegetables, can antagonize the effects of warfarin, potentially leading to treatment inefficacy or fluctuations in anticoagulation levels. Therefore, clients on warfarin therapy should be advised to avoid foods high in vitamin K to maintain the effectiveness of the medication. Choices B, C, and D are incorrect because increasing leafy green vegetables (choice B) would introduce more vitamin K, consuming a consistent amount of foods high in potassium (choice C) is not directly related to warfarin therapy, and limiting high-protein foods (choice D) is not a specific concern for clients on warfarin therapy.

Correct Answer: D

Rationale: A respiratory rate of 28 breaths per minute (D) is most concerning because it indicates respiratory distress and requires immediate intervention. While coarse crackles (A), fever (B), and productive cough (C) are common findings in pneumonia, a high respiratory rate signifies a more severe condition that needs prompt attention to prevent respiratory failure. Monitoring the respiratory rate is crucial in assessing the severity of respiratory distress in pneumonia, as it can rapidly progress to respiratory failure if not managed promptly.

Correct Answer: C

Rationale: The most accurate method to confirm the proper placement of a nasogastric tube is by examining a chest x-ray obtained after the tubing was inserted. This visual assessment allows healthcare providers to directly visualize the position of the tube in relation to anatomical landmarks, ensuring it is correctly placed in the stomach. Aspirating gastric contents or hearing air pass may provide some information but are not as definitive as a chest x-ray for confirming placement. Checking the remaining length of tubing is not a reliable method for determining proper placement as it does not indicate where the tip of the tube lies within the body.

Correct Answer: D

Rationale: To determine the drops per minute for the client, first convert the client's weight from pounds to kilograms: 182/2.2 = 82.73 kg. Calculate the dosage by multiplying 5 mcg by the client's weight in kg: 5 mcg/kg/min 82.73 kg = 413.65 mcg/min. Find the concentration of the solution in mcg/ml by dividing 250 ml by 50,000 mcg (50 mg): 250 ml/50,000 mcg = 200 mcg/ml. As the client needs 413.65 mcg/min and the solution is 200 mcg/ml, the client should receive 2.07 ml per minute. Finally, using the drip factor of 60 gtt/ml, multiply the ml per minute by the drip factor: 60 gtt/ml 2.07 ml/min = 124.28 gtt/min, which rounds to 124 gtt/min. Therefore, the client should receive 124 drops per minute. Choice D is the correct answer. Choices A, B, and C are incorrect because they do not reflect the accurate calculation based on the client's weight, dosage, concentration of the solution, and drip factor.

Correct Answer: D

Rationale: The highest priority nursing diagnosis when planning care for a client with an indwelling urinary catheter is 'High risk for infection.' Indwelling urinary catheters pose a significant risk of infection due to their direct contact with the urinary system. Preventing and managing infections is crucial in the care of these clients. Monitoring for signs of infection, following proper catheter care protocols, and maintaining aseptic technique during catheter maintenance are essential steps to prevent complications associated with catheter-related infections. Choices A, B, and C are not the highest priority because in this case, the immediate concern is the risk of infection associated with the presence of the urinary catheter. While self-care deficit, functional incontinence, and fluid volume deficit are important considerations in overall patient care, they are not as critical as preventing potentially serious infections related to the indwelling urinary catheter.