A client is prescribed heparin infusion for deep vein thrombosis. The aPTT result comes back at 180 seconds (therapeutic range 60โ100 seconds). What is the nurse's priority action?
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A
Continue the infusion and recheck aPTT in 6 hours
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B
Stop the infusion and notify the physician immediately
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C
Decrease the infusion rate by 10% and recheck in 4 hours
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D
Administer protamine sulfate and await physician orders