The PT assesses the coagulation factors of the extrinsic pathway (factors VII) and the common pathway (activated factor X, activated factor V, prothrombin and fibrinogen). A longer-than-normal PT can be caused by treatment with blood-thinning medicines, such as warfarin or, in rare cases, heparin.The prothrombin time (PT or protime) is the actual time, measured in seconds, for an anticoagulated sample of patient plasma to clot after the addition of calcium and an activator of the extrinsic pathway, which is called thromboplastin.This is a life-threatening condition in which your body uses up its clotting factors so quickly that the blood cannot clot and bleeding does not stop. A longer-than-normal PT can also mean that you have disseminated intravascular coagulation (DIC). It can also mean a lack of vitamin K liver disease, such as cirrhosis or that a liver injury has occurred.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |