TEST FOR PRIMARY HEMOSTASIS Flashcards

1
Q

Platelet counts

A

important in helping diagnose bleeding dischets Platelet function primarily in hemostasis maintaining capillary integrity

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2
Q

normal platelet range

A

15000-450000 uL or 150-450x103 mm3

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3
Q

size of platelet

A

1-4 um

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4
Q

platelet has no nucleus

A

true

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5
Q

what is the cytoplasm of platelet

A

very granular , light blue to purple

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6
Q

chromomere

A

granular and located Centrally

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7
Q

. Hyalomere

A

Surrounds the chromere, non-granalar and clear to light blue

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8
Q

Increased platelet count

A

Thrombocytosis
- occurs in infection
-commonly found in myofilbritative disorder
-removal of spleen

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9
Q

myofilbritative disorder

A

Myeloproliferative neoplasms or disorders are a group of rare diseases that affect the production of blood cells in the bone marrow.

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10
Q

thrombocytosis occurs in

A

Polycythemia vera
Idiopathic thrombocythemia *
Chronic myelogenous leukemia
after splenectomy

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11
Q

thrombocytopenia

A

decrease

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12
Q

thrombycopenic purpura
aplastic anemia
Gauchers disease,
Remicious anemia
Following chemotherapy and radiation therapy

A

thrombocytopenia

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13
Q

platelet counting. how many grams of sodium citrate>

A

3.8

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14
Q

platelet counting. how many grams of formaldehyde>

A

0.2

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15
Q

platelet counting. how many grams of briliant cresyll blue?

A

0.1

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16
Q

platelet counting dilution

A

1:!00

17
Q

hemocytometer load

A

settle for 15 mins

18
Q

dilute whole blood by what

A

1% ammonium oxalate or rees ecker fluid

19
Q

platelet estimate

A

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

20
Q

bleeding time- m

A

measures ability to platelet to arrest bleeding
asses plt number and function

21
Q

what are the two test in bleeding time

A

method of iv and method of duke

22
Q

presure of method of ivy

A

40 mmg

23
Q

site of method of duke

A

earlobe

24
Q

normal value of method of duke

A

1-3 min

25
Q

puncture site of metos of ivy

A

5 cm below the anticubtal crease

26
Q

blot time

A

every 30 sec

27
Q

normal value of method of ivy

A

2.5 - 7 min

28
Q

bleeding time prolonged results are cause by

A

bet ni von si tia

bleeding willie brand diseasse
von williberand disease
thrombocytioenia
inherited platelet dysfution
aspirin

29
Q

caopillary fragility test pressure

A

80 mmhg

30
Q

caopillary fragility time

A

5 min but rest for 15 mins

31
Q

capilalry fragility test positive

A

more than 20 petechiae

32
Q

capillary fragility tesst cause

A

tv
thrombochytopenia
vascular disorder

33
Q

clot retraction time

A

obtain 2 ml lbloodby venipuncture
inspect clot 1,2,4 and 24 hours
observe for quality, retraction and lysis
remaining 40-60 percent serum and red blood cell “fall out from clot”
- a visual examintiaon of clot is made. usualyy the clot retracs annd expresse serum wihting 2 hours