Therapeutic Range for the Control of Oral Anticoagulant Therapy

Oral anticoagulant therapy is usually monitored by the one-stage prothrombin time (PT) (Quick-time). The PT result can be expressed as time in seconds, as a ratio (patient time in seconds/control time in seconds), as an index (which is control time/ patient time multiplied by 100), or as a percent of normal control plasma using a saline dilution curve. The guidelines for the optimal therapeutic range for the control of anticoagulant therapy …