TEST FOR PRIMARY HEMOSTASIS Flashcards
(33 cards)
Platelet counts
important in helping diagnose bleeding dischets Platelet function primarily in hemostasis maintaining capillary integrity
normal platelet range
15000-450000 uL or 150-450x103 mm3
size of platelet
1-4 um
platelet has no nucleus
true
what is the cytoplasm of platelet
very granular , light blue to purple
chromomere
granular and located Centrally
. Hyalomere
Surrounds the chromere, non-granalar and clear to light blue
Increased platelet count
Thrombocytosis
- occurs in infection
-commonly found in myofilbritative disorder
-removal of spleen
myofilbritative disorder
Myeloproliferative neoplasms or disorders are a group of rare diseases that affect the production of blood cells in the bone marrow.
thrombocytosis occurs in
Polycythemia vera
Idiopathic thrombocythemia *
Chronic myelogenous leukemia
after splenectomy
thrombocytopenia
decrease
thrombycopenic purpura
aplastic anemia
Gauchers disease,
Remicious anemia
Following chemotherapy and radiation therapy
thrombocytopenia
platelet counting. how many grams of sodium citrate>
3.8
platelet counting. how many grams of formaldehyde>
0.2
platelet counting. how many grams of briliant cresyll blue?
0.1
platelet counting dilution
1:!00
hemocytometer load
settle for 15 mins
dilute whole blood by what
1% ammonium oxalate or rees ecker fluid
platelet estimate
examine platelets on area where rbs barely touch. count platelets in 10 oil immersion. get the average the multiply by 20000. report result by mm3
bleeding time- m
measures ability to platelet to arrest bleeding
asses plt number and function
what are the two test in bleeding time
method of iv and method of duke
presure of method of ivy
40 mmg
site of method of duke
earlobe
normal value of method of duke
1-3 min