Path Bleeding disorders Flashcards
overproduction of corticosteroids from adrenalcortex
Cushing’s Syndrome brittle blood vessels, severe osteoporosis, obesity, diabetes,high BP
o Prolonged steroid medication use can have symptoms similar to
Cushing’s, easy bruising
bruises > 2 cm
Ecchymoses
– larger than a pinpoint, but
Purpura
– leak of blood into cavities o
Hematoma
Rupture of middle meningeal artery
epidural hematoma
Thrombocytopenia
Normal amount of platelets in blood: 250,000 – 300,000
no platelet activation cannot form platelet plughemorrhagic gastroduodenitis— balck stool
Von Willebrand’s Disease
– increased amount of blood lost during menstruation
menorrhagia (related to von willebrand’s)
seriousdisorder manifested usually from uterus cancer, which results inloss of blood between menstruation periods
metrorrhagia/not related to Von W
non-production of certain protein clotting factors
Hemophilia
Hemophilia genetics
mother to son X chromosome (skips a generation)
nonproduction of CF 8 viii
Hemophilia A
nonproduction of CF 9
Christmas disease/Hemophilia B
Hemoarthritis
Trauma leads to blood in joint spaces, esp. Knee jointIron released from heme into blood destroys the joint cartilage
Hemodynamic Disorders
Disorders that arise from interruptions in normal blood flow
platelet activation and platelet aggregationwithout threat of blood loss or vascular damage; platelet plug without blood clot
Thrombosis
always originates from a vascular wall and always maintains point of contact with the vascular wall through von Willebrand factorplateletactivaton and platelet aggregation
Thrombus
Thrombus in the arterial system
Dense and strong , firm and small (fast)
Thrombus in the venous system
Loose and weak , loose and large (slow)
represent a special type of thrombi characterized by visible andmicroscopic laminations produced by alternating layers: pale layer composed ofplatelets mixed with fibrin and dark layer composed of RBCs
Lines of Zahn
lines of Zahn + thrombi can be found
heart/aorta(mitral stenosis)
factors predisposing to thrombosis
Endothelial damageHypertension- increase resistance of the vascular wall to the fluid. Serious factorthat promotes endothelial damage.
Iatrogenic thrombosis
medically induces endothelial damage via syringes.
Decreased rate of flow causes a disruption in axial blood flow by
platelets flow closer to the vessel wall
decreased rate of blood flow caused by
cardiac damageincreased blood viscosity