Cardiovascular Drugs and Medications Q 60



A client with atrial fibrillation is receiving a continuous heparin infusion at 1,000 units/hr. The nurse observes that the client is receiving the therapeutic effect based on which of the following results?
  
     A. Activated partial thromboplastin time of 30 seconds.
     B. Activated partial thromboplastin time of 60 seconds.
     C. Activated partial thromboplastin time of 120 seconds.
     D. Activated partial thromboplastin time of 15 seconds.
    
    

Correct Answer: B. Activated partial thromboplastin time of 60 seconds.

The normal range for activated partial thromboplastin time is 20-36 seconds. The activated partial thromboplastin time must be 1.5 to 2.5 times the normal value, the client’s Appt would be considered therapeutic if it was 60 seconds.