Bleeding Disorders Flashcards
what is hemorrhagic disorder ?
it is a group of disorders of widely difeering etiology which have in common an abnormal tendency to bleed due to a defect in the mechanism of heamostasis
BD due to vascular defect ?
hereditary haemorrhagic telangiectasis
ehlers danlos disease
purpura simplex
senile purpura
polyarteritis nodosa
bleeding disorder of platelet abnormalities >
thrombocytopenia
thrombathenia
thrombpcytosis
thrombocythaemia
BD of coagulation defect ?
H A & B
Von willebrand disease
screening test for BD ?
BT
CT
PT
APTT
TT
PC
Normal BT ?
<6min
Normal CT ?
6-12 MIN
PT ???
9-12 sec
APTT ??
32-40 sec
TT ??
10-14 sec
PC ?
1.5-4 laks/mm3
BT prolonged in which D ?
ITP
CT + APTT prolonged= ??
Haemophilia A + B
BT CT APTT TT all prolonged = ??
DIC
Confirmatory test of ITP?
Bone marrow
—- inc megakaryopoiesis
Anti-platelet AB
CBC of ITP ?
all = Normal
Platelet count = dec
screening test result of ITP ?
BT = prolonged
CT APTT PC TT = dec
cause of prolong TT ?
DIC
APTT what ??
time required for clotting to take place in intrinsic pathway
Other name of DIC ?
consumption coagulopathy
defibrination syndrome 448
PT what ?
time required for clot in extrinsic pathway
causes of thrombocytopenia?
437
VWF disease which one prolonged ?
BT CT APTT
VWd confirmatory test ?
factor VIII ASSAY = normal/dec
VWF assat = dec/nai