prothrombin consumption test

Under physiological conditions, blood coagulation requires a large amount of prothrombin. After coagulation, there is little prothrombin remaining in the serum, and serum prothrombin time is prolonged. If factor VIII, IX, XI, XII is defective, thromboplastin If the production is poor and the prothrombin consumption is reduced, then more prothrombin remains, and the prothrombin time is shortened. Basic Information Specialist classification: cardiovascular examination classification: blood examination Applicable gender: whether men and women apply fasting: fasting Tips: Do not take anticoagulants, such as aspirin, before testing. Normal value More than 25 seconds. Clinical significance shorten Found in hemophilia A, hemophilia B, hemophilia C, acquired coagulation factor deficiency (such as disseminated intravascular coagulation and liver disease), thrombocytopenia, thrombocytopenia, myeloproliferative syndrome, cirrhosis, uremia Symptoms, etc. Precautions Before inspection: 1, do not eat too greasy, high-protein food the day before the blood, to avoid heavy drinking. The alcohol content in the blood directly affects the test results. 2. After 8 pm on the day before the medical examination, you should start fasting for 12 hours to avoid affecting the test results. 3, should relax when taking blood, to avoid the contraction of blood vessels caused by fear, increase the difficulty of blood collection. 4. It is forbidden to take anticoagulants, such as aspirin, before the test. After the examination: 1. After blood is drawn, local compression is required at the pinhole for 3-5 minutes to stop bleeding. Note: Do not rub, so as not to cause subcutaneous hematoma. 2, the pressing time should be sufficient. There is a difference in clotting time for each person, and some people need a little longer to clotting. Therefore, when the surface of the skin appears to be bleeding, the compression is stopped immediately, and the blood may be infiltrated into the skin due to incomplete hemostasis. Therefore, the compression time is longer to completely stop bleeding. If there is a tendency to bleed, the compression time should be extended. 3, after the blood draw symptoms of fainting such as: dizziness, vertigo, fatigue, etc. should immediately lie down, drink a small amount of syrup, and then undergo a physical examination after the symptoms are relieved. 4. If there is localized congestion, use a warm towel after 24 hours to promote absorption. Inspection process Inspection method: draw blood. Not suitable for the crowd Have a coagulopathy such as hemophilia. Adverse reactions and risks Infection: Do not touch the dirt after blood collection. Do not wash your hands immediately to avoid infection.