3S [LAB]: Tests for Primary Hemostasis Flashcards
(18 cards)
Measures the ability of small blood vessels to control bleeding after injury
Bleeding time
Normal value for bleeding time
2-4 minutes
A bleeding time method that uses sphygmomanometer cuff
Ivy’s method
In Ivy’s method of bleeding time, the blood pressure cuff should be set at ___
40 mmHg
Normal value for Ivy’s method of bleeding time
3-6 minutes
A bleeding time method that immerses the punctured finger in wam sterile physiologic saline solution
Copley-Lalitch method
Normal value for Copley-Lalitch method of bleeding time
<3 minutes
Measures the period required for free flowing blood to clot or solidify after it has been removed from the body
Clotting time
Normal value for clotting time (capillary method)
2-4 minutes
Normal value for clotting time (whole blood method)
7-15 minutes
A bleeding time method using fingertip or earlobe
Duke method
In vWD, which agonist will fail in the platelet aggregation test?
Ristocetin
In Bernard Soulier, which agonist will fail in the platelet aggregation test?
Ristocetin
In Glanzmann’s thrombasthenia, which agonist will fail in the platelet aggregation test?
Epinephrine, Collagen, ADP
In Fibrinogen deficiency, which agonist will fail in the platelet aggregation test?
Epinephrine, Collagen, ADP
Test to determine clot retraction time
Castor oil/ Hirschboeck method
Normal value for Castor oil/ Hirschboeck method
15-45 minutes
Which condition will have a prolonged Castor oil/ Hirschboeck time?
Glanzmann’s thrombasthenia
