Interpret the following results. • PT = 32 sec
• APTT = 92 sec
• TT = 100 sec.
What is the most likely reason for these aberrant results?
A) The patient is in DIC.
B) There is heparin contamination of the sample.
C) The patient is taking Coumadin.
D) The patient has liver disease.

Question

Interpret the following results. • PT = 32 sec
• APTT = 92 sec
• TT = >100 sec.
What is the most likely reason for these aberrant results?
A) The patient is in DIC.
B) There is heparin contamination of the sample.
C) The patient is taking Coumadin.
D) The patient has liver disease.

Quizplus · Accepted Answer

The prolonged APTT and TT suggest an inhibition of the intrinsic and common coagulation pathways, which is consistent with heparin contamination. The PT is not significantly prolonged, which rules out liver disease or Coumadin therapy as the cause. DIC may also cause abnormal coagulation results, but typically results in a prolonged PT and APTT as well as low fibrinogen and platelet counts.

Interpret the Following Results