The nurse is caring for a client with a new diagnosis of hyperthyroidism. Which intervention should the nurse prioritize?

Choice A reason: Early ambulation prevents stasis but is contraindicated in acute deep vein thrombosis, as it risks dislodging the clot, causing pulmonary embolism. Leg elevation reduces swelling and promotes venous return, making it the priority intervention to manage acute DVT safely.

Choice B reason: Warm compresses may increase blood flow but are not standard for deep vein thrombosis, as they risk clot dislodgement. Leg elevation reduces edema and venous pressure, improving circulation without mobilizing the clot, making it the preferred intervention for DVT management.

Choice C reason: Restricting fluid intake is inappropriate, as hydration prevents blood viscosity increases that exacerbate deep vein thrombosis. Leg elevation directly reduces swelling and promotes venous return, addressing the primary issue of venous stasis, making it the priority over fluid restriction.

Choice D reason: Elevating the affected leg reduces edema and venous pressure in deep vein thrombosis by promoting venous return to the heart. This decreases clot propagation risk and alleviates pain, making it a key intervention to manage acute DVT effectively and prevent complications.

Choice A reason: Platelet count assesses bleeding risk but does not measure warfarin’s anticoagulant effect. Warfarin inhibits clotting factors, monitored by INR. Platelet counts are relevant for antiplatelet drugs, not anticoagulants, making INR the priority for evaluating warfarin efficacy in atrial fibrillation.

Choice B reason: INR measures warfarin’s anticoagulant effect by assessing prothrombin time, reflecting vitamin K-dependent clotting factor inhibition. In atrial fibrillation, therapeutic INR (2.0–3.0) prevents thromboembolism. Monitoring INR ensures effective anticoagulation, making it the critical lab value for warfarin therapy management.

Choice C reason: Hemoglobin level detects bleeding, a warfarin side effect, but does not assess its therapeutic effect. INR directly evaluates anticoagulation, ensuring stroke prevention in atrial fibrillation. Hemoglobin is secondary, monitored for complications, not efficacy, making INR the priority lab value.

Choice D reason: Serum potassium is unrelated to warfarin’s anticoagulant action. Electrolyte imbalances may affect cardiac rhythm in atrial fibrillation, but INR measures warfarin’s effect on clotting factors, ensuring therapeutic anticoagulation, making it the essential value to monitor for medication efficacy.