Which laboratory test is used to monitor a heparin infusion, and what is the antidote?
Answer and explanation
Correct answer: B. aPTT, with protamine sulfate as the antidote
- Step 1: Heparin is monitored with the activated partial thromboplastin time. Step 2. Protamine sulfate neutralizes heparin. Answer: aPTT and protamine sulfate. Why not the others: INR and vitamin K relate to warfarin.
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