Test your knowledge with real exam-style questions. Answers and rationales included.
Question 1 of 5
A client is prescribed warfarin. Which INR value indicates the medication is at therapeutic level for atrial fibrillation?
📚 Rationale: Therapeutic INR for atrial fibrillation and most conditions is 2.0-3.0. Normal INR is 0.8-1.1. Values above 3.0 indicate bleeding risk. Values of 3.5-4.5 are only used for mechanical heart valves.
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Question 2 of 5
A client with digoxin toxicity would exhibit which symptoms?
📚 Rationale: Classic digoxin toxicity signs: bradycardia (<60 bpm), nausea/vomiting, and visual disturbances including yellow-green halos around lights. Always check apical pulse and potassium before giving digoxin.
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Question 3 of 5
Which position is best for a client with increased intracranial pressure (ICP)?
📚 Rationale: HOB 30-45 degrees with head in neutral midline position promotes cerebral venous drainage, reducing ICP. Trendelenburg (head down) INCREASES ICP. Head turning can kink jugular veins increasing ICP.
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Question 4 of 5
A client in DKA has K+ of 3.1 mEq/L. IV insulin is ordered. What should the nurse do?
📚 Rationale: Insulin must be HELD when K+ is below 3.5 mEq/L. Insulin drives potassium INTO cells, which will dangerously lower an already low potassium level, causing fatal cardiac dysrhythmias. Potassium must be corrected first.
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Question 5 of 5
A client reports severe pain and tingling in a newly casted extremity 4 hours post-application. What is the priority action?
📚 Rationale: Severe pain and tingling in a new cast are signs of COMPARTMENT SYNDROME — a surgical emergency. Notify the provider IMMEDIATELY. This can lead to permanent tissue damage or loss of limb if not treated urgently.