Question 1

what does a prothrombin time measurement do?

Accepted Answer

Extrinsic pathway of: Clotting.  Pt is dependent on levels of multiple coagulation factors, including x, ix vii, v, and ii.

Question 2

decrease in prothrombin time can lead to what?

Accepted Answer

Repeat test.: A shortened clotting time that does not appear to reflect technical error has been associated with an increased risk of thrombosis, recurrent thrombosis, recurrent miscarriage, or bleeding, and may increase the risk of thrombosis associated with other common thrombotic risk factors (eg, factor v leiden, obesity, increased levels of d-dimer).

Question 3

how can i get  a normal range of prothrombin time?

Accepted Answer

12 Seconds, but INR: Normal prothrombin time varies a from lab to lab; the average value is about 12 seconds.  To compensate for the variability, the ratio of each lab's normal to the patient value is reported as international normalized ratio (inr) and an INR of 1.0 is normal.

Question 4

what does an abnormal prothrombin time test mean for you?

Accepted Answer

Abnormal clotting : An abnormal prothrombin time means that there is something wrong with your blood's ability to form clots and prevent bleeding. There are many conditions that result in such an abnormality, and you need to have your doctor figure out what the problem is based on other test findings and your symptoms. Sometimes you'll need a hematologist to consult if there is a chance of a serious bleeding problem.

Question 5

what is the definition or description of: prothrombin time?

Accepted Answer

PTT: Prothrombin time provides information regarding the extrinsic pathway involved in clot formation. It's commonly used to monitor warfarin therapy.

Question 6

my baby was tested for prothrombin time. his value is 16. ok?

Accepted Answer

Depends: Pt of 16 is higher than the normal in most laboratories.  However, the value needs to be taken in the context of other issues.  Was the baby pre-mature?  Is there any abnormal bleeding?  Was the baby given vitamin k and pt repeated?  It would be prudent to consult your pediatrician.

Question 7

when would a baby of 1-2 months need prothrombin time testing? what are they looking for?

Accepted Answer

Unexplaind bruises: When a doctor orders prothrombin time and other clotting tests, he/she is probably looking for a bleeding disorder that may explain bruises in a baby that young.

Question 8

high prothrombin time levels affect bleeding?

Accepted Answer

Yes.: Prothrombin times about three times higher than normal for the particular lab may be a risk for abnormal bleeding.

Question 9

what is thrombocytopenia and how is a prothrombin time test used?

Accepted Answer

Blood clotting: Thrombocytopenia means low level of blood plateletes. Prothrombin time is a test for extrinsic coagulation pathway that is initiated with factor vii. Vitamin k deficiency or use of Coumadin (warfarin) or liver function deficiency will prolong the prothrombin time, while several blood clotting diseases that affect intrinsic coagulation such as von willibrand or hemophila will not affect prothrombin time.

Question 10

what can you tell me about thrombocytopenia and prothrombin time test?

Accepted Answer

Low platelet: Thrombocytopenia is low platelet and abnormal prothrombin time is secondary to congenital deficiencies of factor V ,VII ,and X.

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Doctor answers about:

Decreased prothrombin time

A member asked:

What does a prothrombin time measurement do?

A member asked:

Decrease in prothrombin time can lead to what?

A member asked:

How can i get a normal range of prothrombin time?

A member asked:

What does an abnormal prothrombin time test mean for you?

A member asked:

What is the definition or description of: prothrombin time?

A member asked:

My baby was tested for prothrombin time. his value is 16. ok?

A member asked:

When would a baby of 1-2 months need prothrombin time testing? what are they looking for?

A member asked:

High prothrombin time levels affect bleeding?

A member asked:

What is thrombocytopenia and how is a prothrombin time test used?

A member asked:

What can you tell me about thrombocytopenia and prothrombin time test?

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