HESI LPN
Adult Health 2 Exam 1
1. What is the primary function of neutrophils?
- A. Heparin secretion
- B. Transport oxygen
- C. Phagocytotic action
- D. Antibody formation
Correct answer: C
Rationale: The correct answer is C: Phagocytotic action. Neutrophils are key components of the immune system, primarily involved in the phagocytosis of bacteria and other pathogens. Choice A, Heparin secretion, is incorrect as heparin is primarily secreted by mast cells and basophils. Choice B, Transport oxygen, is incorrect as this is mainly the function of red blood cells. Choice D, Antibody formation, is incorrect as antibody production is primarily carried out by B lymphocytes.
2. A client is prescribed warfarin for the prevention of thromboembolism. What dietary instruction should the nurse provide?
- A. Increase intake of green leafy vegetables
- B. Maintain a consistent intake of vitamin K-rich foods
- C. Avoid all foods containing vitamin K
- D. Consume a high-protein diet
Correct answer: B
Rationale: The correct answer is B. Maintaining a consistent intake of vitamin K-rich foods is important for patients taking warfarin as it helps keep the effects of the medication stable. Choice A is incorrect because while green leafy vegetables are high in vitamin K, they should not be avoided completely but rather consumed consistently. Choice C is also incorrect as avoiding all foods containing vitamin K can lead to fluctuations in warfarin's effectiveness. Choice D is incorrect as a high-protein diet is not specifically recommended for patients taking warfarin.
3. A client is admitted with a diagnosis of diabetic ketoacidosis (DKA). Which laboratory finding is most indicative of this condition?
- A. Serum glucose of 180 mg/dL
- B. Blood pH of 7.30
- C. Positive urine ketones
- D. Serum bicarbonate of 25 mEq/L
Correct answer: C
Rationale: The correct answer is C: Positive urine ketones. In diabetic ketoacidosis (DKA), the body breaks down fat for energy due to a lack of insulin, leading to ketone production. Positive urine ketones are a hallmark laboratory finding in DKA as they directly reflect the presence of ketosis. Choice A, serum glucose of 180 mg/dL, may be elevated in DKA, but it is not specific to this condition. Choice B, blood pH of 7.30, often shows acidosis in DKA, but urine ketones are more specific to the presence of ketosis. Choice D, serum bicarbonate of 25 mEq/L, would typically be low in DKA due to acidosis rather than elevated.
4. The client with heart failure is prescribed furosemide (Lasix). What should the nurse include in the teaching plan?
- A. Increase potassium-rich foods in the diet
- B. Avoid foods high in sodium
- C. Monitor fluid intake and adjust as needed
- D. Take the medication in the morning
Correct answer: A
Rationale: The correct answer is to instruct the client to increase potassium-rich foods in the diet. Furosemide is a loop diuretic that can cause potassium loss as a side effect. By increasing potassium-rich foods, the client can help prevent hypokalemia, a potential complication of furosemide therapy. Choice B is incorrect because while limiting sodium intake is generally advisable for heart failure, it is not directly related to furosemide use. Choice C is incorrect because fluid intake should be monitored and adjusted based on the individual's condition, but setting a specific limit of 1 liter per day is not a standard recommendation. Choice D is incorrect because furosemide is usually taken in the morning to prevent disturbances in sleep due to increased urination during the night.
5. When teaching a diabetic client about foot care, what information is most important?
- A. Inspect feet daily
- B. Wear cotton socks
- C. Use lukewarm water to wash feet
- D. Cut nails straight across
Correct answer: A
Rationale: Inspecting feet daily is crucial for diabetic clients as it can help prevent complications like infections and ulcers. This practice allows for early detection of any foot issues, enabling timely intervention. While wearing cotton socks (choice B) is beneficial as they absorb moisture and reduce the risk of fungal infections, it is not as critical as daily foot inspection. Using lukewarm water to wash feet (choice C) is important to prevent burns or skin damage in diabetic clients with decreased sensation, but it is not as crucial as daily foot inspection. Cutting nails straight across (choice D) is essential to prevent ingrown nails, but it is not the most important information when educating diabetic clients about foot care.
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