the lpnlvn is assisting with the care of a client who is on a continuous heparin infusion for deep vein thrombosis dvt which laboratory test should th
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Pharmacology for LPN

1. The nurse is assisting with the care of a client who is on a continuous heparin infusion for deep vein thrombosis (DVT). Which laboratory test should the nurse monitor to evaluate the effectiveness of the therapy?

Correct answer: B

Rationale: To evaluate the effectiveness of heparin therapy in a client with DVT, the nurse should monitor the activated partial thromboplastin time (aPTT). The aPTT test helps ensure that the dose of heparin is within the therapeutic range, which is essential for preventing clot formation or excessive bleeding. Monitoring aPTT is crucial in managing patients on heparin therapy to maintain the delicate balance between preventing thrombosis and avoiding hemorrhage. Prothrombin time (PT) and International normalized ratio (INR) are more indicative of warfarin therapy effectiveness, not heparin. Platelet count assesses platelet levels and function, not the effectiveness of heparin therapy for DVT.

2. The client with heart failure is prescribed furosemide (Lasix). Which electrolyte imbalance is the nurse most likely to monitor for?

Correct answer: C

Rationale: The correct answer is C: Hypokalemia. Furosemide, a loop diuretic, commonly causes potassium loss, leading to hypokalemia. The nurse should closely monitor for decreased potassium levels in a client receiving furosemide to prevent complications such as cardiac arrhythmias or muscle weakness. Hyperkalemia (Choice A) is not typically associated with furosemide use. Hypernatremia (Choice B) refers to high sodium levels and is not the primary concern with furosemide. Hyponatremia (Choice D) is low sodium levels, which can occur but is less common than hypokalemia in clients taking furosemide.

3. The client is receiving intravenous heparin for the treatment of a pulmonary embolism. Which medication should the nurse ensure is readily available?

Correct answer: A

Rationale: Protamine sulfate is the antidote for heparin, used to reverse its anticoagulant effects. It should be readily available in case of bleeding complications, as it can rapidly neutralize the effects of heparin and prevent excessive bleeding. Vitamin K is used to reverse the effects of warfarin, not heparin (Choice B). Calcium gluconate is used to treat calcium deficiencies, not indicated for heparin therapy (Choice C). Magnesium sulfate is used for conditions like preeclampsia and eclampsia, not for reversing heparin effects (Choice D).

4. A client is diagnosed with thrombophlebitis. The nurse should tell the client that which prescription is indicated?

Correct answer: C

Rationale: The correct answer is C: Bed rest, with elevation of the affected extremity. Elevating the affected extremity is crucial in managing thrombophlebitis as it helps reduce swelling and promotes venous return. By elevating the affected extremity, the gravitational force assists in venous blood flow back to the heart, thereby reducing the risk of complications associated with thrombophlebitis. Choices A, B, and D are incorrect because they do not address the need for elevation, which is specifically beneficial in the management of thrombophlebitis.

5. What is the initial action the nurse should take for a client who had a myocardial infarction (MI) and is experiencing restlessness, agitation, and an increased respiratory rate?

Correct answer: A

Rationale: Administering oxygen is the priority action for a client experiencing restlessness, agitation, and an increased respiratory rate after a myocardial infarction (MI). This intervention helps ensure adequate oxygenation, improve cardiac function, and reduce the workload on the heart. Oxygen therapy takes precedence over administering medications like morphine sulfate or notifying the healthcare provider as it addresses the immediate need for oxygenation. Checking the blood pressure is also important but not as urgent as ensuring proper oxygen supply.

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