A platelet aggregation study shows diminished response to all agonists except for a small response to arachidonic acid and full response to ristocetin. Which condition is most likely?

Question

Quizplus · Accepted Answer

Glanzmann thrombasthenia is characterized by a diminished response to all agonists except for a normal response to ristocetin, which matches the description given. This condition is due to a deficiency or dysfunction of the platelet glycoprotein IIb/IIIa complex, which is crucial for platelet aggregation.

A Platelet Aggregation Study Shows Diminished Response to All Agonists