8/24- LAB 7- Acquired Coagulation Disorders

Question 1

What factor assays do you request (knowing that there is a prolonged PTT)?

A. FXII, FXI, FVIII

B. FII, FV, FVII

C. FX, FVII, FII

D. FVIII, FIX, FXI

E. FXIII, FIX, FVII

Answer 1

What factor assays do you request (knowing that there is a prolonged PTT)?

A. FXII, FXI, FVIII

B. FII, FV, FVII

C. FX, FVII, FII

D. FVIII, FIX, FXI

E. FXIII, FIX, FVII

(remember F.XII issues do NOT cause bleeding!)

Question 2

Laboratory workup:

• Factor VIII 43% [47%-169%]
• Factor IX 106% [67%-141%]
• Factor XI 66% [48%-139%]
• The mild prolongation of the PTT is explained by a low factor VIII and a low normal factor XI.
• Work-up ended. Results were reported.

What would you do?

A. None - Clear the patient for surgery.

B. Transfuse plasma before surgery.

C. Do further study.

D. Transfuse platelets.

E. Administer factor VIII

Answer 2

What would you do?

A. None - Clear the patient for surgery.

B. Transfuse plasma before surgery.

C. Do further study.

D. Transfuse platelets.

E. Administer factor VIII

(do the von Willebrand panel)