A patient has an isolated prolonged aPTT. The result corrects into the reference interval immediately after a …

Question

A patient has an isolated prolonged aPTT. The result corrects into the reference interval immediately after a 1:1 mix with normal pooled plasma. Which mechanism is most likely?

Accepted Answer

보기 3: Deficiency of one or more factors measured by the aPTT

Correction after mixing indicates that normal plasma supplied the missing activity, supporting a coagulation factor deficiency. Failure to correct would raise concern for an inhibitor or anticoagulant effect.

Answer

보기 1: A strong time-independent inhibitor

Answer

보기 2: Heparin contamination that is neutralized by dilution

Answer

보기 4: Excess tissue factor in the specimen

성장을 멈추지 마세요

A patient has an isolated prolonged aPTT. The result corrects into the reference interval immediately after a 1:1 mix with normal pooled plasma. Which mechanism is most likely?

마이메르시로 국가고시 완벽 대비