ATI LPN
LPN Pharmacology Practice Test
1. A client has a new prescription for metformin. Which of the following instructions should the nurse include?
- A. Take the medication with food.
- B. Monitor for signs of hyperglycemia.
- C. Increase your fluid intake.
- D. Expect a sweet taste in your mouth.
Correct answer: C
Rationale: The correct instruction for a client starting metformin is to increase fluid intake. Metformin commonly causes gastrointestinal discomfort, and increasing fluid intake can help alleviate this side effect. Instructing the client to take the medication with food (Choice A) rather than on an empty stomach is recommended to reduce gastrointestinal side effects. Monitoring for signs of hyperglycemia (Choice B) is not directly related to metformin but rather to low blood sugar. Expecting a sweet taste in the mouth (Choice D) is not a common side effect of metformin.
2. The client with myocardial infarction should reduce intake of saturated fat and cholesterol. Which food items from the dietary menu would assist the nurse in helping the client comply with diet therapy?
- A. Cheeseburger, pan-fried potatoes, whole kernel corn, sherbet
- B. Pork chop, baked potato, cauliflower in cheese sauce, ice cream
- C. Baked haddock, steamed broccoli, herbed rice, sliced strawberries
- D. Spaghetti and sweet sausage in tomato sauce, vanilla pudding (with 4% milk)
Correct answer: C
Rationale: Option C, which includes baked haddock, steamed broccoli, herbed rice, and sliced strawberries, is the most appropriate choice for a client with myocardial infarction looking to reduce saturated fat and cholesterol intake. This meal is low in saturated fats and cholesterol, making it a heart-healthy option that aligns with the dietary recommendations for such clients. Choices A, B, and D contain foods high in saturated fats and cholesterol, which are not suitable for a client with myocardial infarction trying to adhere to a diet therapy aimed at reducing these components.
3. The LPN/LVN is assisting in caring for a client in the telemetry unit and is monitoring the client for cardiac changes indicative of hypokalemia. Which occurrence noted on the cardiac monitor indicates the presence of hypokalemia?
- A. Tall, peaked T waves
- B. ST-segment depression
- C. Prolonged P-R interval
- D. Widening of the QRS complex
Correct answer: B
Rationale: ST-segment depression can indicate hypokalemia, affecting the heart's electrical conduction. Hypokalemia leads to alterations in the repolarization phase of the cardiac action potential, resulting in ST-segment depression on the ECG. Tall, peaked T waves are indicative of hyperkalemia, not hypokalemia. A prolonged P-R interval is more commonly associated with first-degree heart block. Widening of the QRS complex is typically seen in conditions like bundle branch blocks or ventricular tachycardia, not specifically in hypokalemia.
4. The client is receiving heparin therapy for deep vein thrombosis (DVT). Which lab test should be monitored to evaluate the effectiveness of heparin?
- A. Prothrombin time (PT)
- B. International normalized ratio (INR)
- C. Activated partial thromboplastin time (aPTT)
- D. Fibrinogen levels
Correct answer: C
Rationale: Activated partial thromboplastin time (aPTT) is the appropriate lab test to monitor the therapeutic effectiveness of heparin therapy. Heparin affects the intrinsic pathway of the coagulation cascade, and monitoring aPTT helps ensure the client is within the therapeutic range to prevent clot formation. Prothrombin time (PT) and International normalized ratio (INR) are used to monitor warfarin therapy, a different anticoagulant that affects the extrinsic pathway of the coagulation cascade. Fibrinogen levels are not specific to monitoring heparin therapy.
5. The client is reinforcing instructions for a low-sodium diet. Which statement by the client indicates a need for further teaching?
- A. I will avoid adding salt to my food while cooking.
- B. I will use salt substitutes instead of regular salt.
- C. I can eat as much processed food as I like since it's usually low in sodium.
- D. I will read food labels to check for sodium content.
Correct answer: C
Rationale: The correct answer is C. Processed foods often contain high amounts of sodium, so they should be limited or avoided on a low-sodium diet. Choosing processed foods can lead to increased sodium intake, counteracting the purpose of following a low-sodium diet. Option A shows an understanding of avoiding added salt, Option B suggests using alternatives to regular salt, and Option D indicates a willingness to check food labels for sodium content, all of which are appropriate for a low-sodium diet. Therefore, the client's statement about eating processed foods freely is incorrect and requires further teaching.
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