Reply To: NEET SS Clinical Hematology 2020 Telegram Group Discussion MCQs

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31. The value of vWF:RCO/ vWF:Ag ratio taken at cutoff to define vWD functional defect is ?
[1] 0.6
[2] 0.2
[3] 0.4
[4] 0.8

Answer = 0.6 if vWF:RCO/ vWF:Ag ratio is 0.6 or less, then Type II vWD is a possibility and Type I is ruled out.

32. Low-dose ristocetin-induced platelet aggregation (LD-RIPA) will be positive in ?
[1] vWD type 2B and platelet-type vWD
[2] vWD type 2B
[3] vWD type 2B and vWD type 2M
[4] vWD type 2M

Answer = [1] vWD type 2B and platelet-type vWD both will show hyperresponsive ness to Low Dose Ristocetin.