Tests for Primary Hemostasis Flashcards
in vivo platelet count in order for sugnificant bleeding to occur
<60,000/mm3
in vivo screening test for platelet function that is based on the time it takes for platelets to plug broken capilaries after a small cut
bleeding time
bleeding time method that punctures the fingertip/earlobe
Duke’s method
normal values for Duke method
2-5 minutes
bleeding time method that punctures the volar part of the arm
Ivy method
pressure cuff is set at (?) during the Ivy method
40mmHg
normal value of Ivy method
2-8 minutes
normal values of the Modified Standardized Simplate Test
2.3 to 9.5 minutes
platelet count in order to have a prolonged bleeding time
<100,000/mm3
*** does not necessarily mean signifant bleeding
increase bleeding time is cased by the following factors:
aspirin
von Willebrand disease
congenital platelet abnormalities
platelet count lower that 100,000/mm3
AKA glass bead retention test
Salzman test
normal value for Salmanz test
26-60%
AKA platelet adhesiveness invivo test
Borshgervinct test
platelet aggregation is measured with
platelet aggregometer
procedure of MacFarlane test for clot retraction time
5ml of blood at 37C for 1 hour
