A nurse is preparing to administer warfarin to a client with a mechanical valve replacement. The client's INR is 2.7. Which action should the nurse implement?
Hold the medication and notify the HCP
Administer the medication as ordered.
Prepare to administer vitamin K (AquaMephyton).
Assess the client for abnormal bleeding.
Fat embolism
The Correct Answer is B
A. Hold the medication and notify the HCP: This is unnecessary. An INR of 2.7 is within the therapeutic range for a client with a mechanical valve replacement (2.5 to 3.5). No intervention is required.
B. Administer the medication as ordered: The INR of 2.7 is within the desired therapeutic range for clients on warfarin with mechanical valve replacements, so the nurse should proceed with the prescribed dose.
C. Prepare to administer vitamin K (AquaMephyton): Vitamin K is used to reverse the effects of warfarin if the INR is too high (usually greater than 5).
D. Assess the client for abnormal bleeding: While important, this is not the first action. The INR is within the therapeutic range, so the priority is to administer the medication.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Sinus rhythm with first-degree heart block: This rhythm is characterized by a regular sinus rhythm with a prolonged PR interval (greater than 0.20 seconds), indicating a first-degree heart block.
B. ST-segment elevation myocardial infarction (STEMI): STEMI is indicated by significant ST-segment elevation in specific leads, showing acute myocardial infarction.
C. Atrial fibrillation: Atrial fibrillation shows an irregularly irregular rhythm without distinct P waves.
D. Ventricular tachycardia: Ventricular tachycardia is a rapid heart rhythm originating from the ventricles, with wide QRS complexes and no preceding P waves.
Correct Answer is A
Explanation
A. It decreases spasm of the coronary arteries: Amlodipine is a calcium channel blocker that relaxes vascular smooth muscle, making it effective in treating coronary artery spasms in Prinzmetal's angina.
B. It increases the force of myocardial contraction: Amlodipine does not increase myocardial contractility; it primarily affects vascular tone.
C. It helps prevent clotting in the coronary arteries: Amlodipine is not an anticoagulant or antiplatelet agent.
D. It reduces the "fight or flight" response: Beta-blockers, not amlodipine, are typically associated with reducing the sympathetic nervous system response.
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