Coagulation parameters before a percutaneous procedure

What coagulation parameters are assessed before a percutaneous procedure? 

The patient history should be reviewed for bleeding risks, such as anticoagulant (warfarin [Coumadin], low-molecular-weight heparin) or platelet-inhibitor (aspirin, clopidogrel [Plavix]) agents, uremia, or hepatocellular disease.

Routinely assessed parameters include hematocrit, prothrombin time, international normalized ratio (INR), partial thromboplastin time (PTT), and platelet count.


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