Patients with acquired coagulopathy often require percutaneous image-guided invasive
procedures for urgent control of hemorrhage or for elective procedures. Routine preprocedural
evaluation of coagulopathy previously focused on absolute prothrombin time, partial
thromboplastin time, international normalized ratio, and platelet count values. Now
viscoelastic testing and greater understanding of patient- and drug-specific changes
in coagulation profiles can yield better coagulation profile data. More specific reversal
agents and profiles combine for less generalized and more titrated transfusion or
correction algorithms. This article reviews procedural and patient-specific factors
for defining both hemorrhagic risk and correction strategies.
Keywords
interventional radiology - coagulopathy - hemorrhage - hemostasis - clotting disorders
