Path 4: No blood, thin blood, solid blood Flashcards
Edema happens when hydrostatic pressure is _______ and/or colloid osmotic pressure is _______
Edema happens when hydrostatic pressure is increased and/or colloid osmotic pressure is decreased
Effusions:
Inflammatory edema causes _____.
Noninflammatory causes _______.
Inflammatory edema causes exudates
Noninflammatory causes transudates
Reduced albumin can be due to ____ or ____
Decreased production (eg cirhossis)
Increased excreation (nephrotic sx)
Lymphedema parasite that causes elephantiasis
Filariasis
caused by wucheria bancrofti
Hyperemia process
Arteriolar dilation leads to increased blood flow.
Cells seen in chronically congested tissues
Hemosiderin laden macrophages
Arteriolar vasoconstriction in injury due to
Neurologic reflex
Endothelin
Disruption of endothelium exposes: (2)
von Willebrand Factor
Collagen
Clotting: Tissue factor binds and activates _____
Factor VII
Primary plug made by
Platelets
GIIb/IIIa deficiency aka
Glanzmann thrombasthenia
Thrombin converts ___ to _____
FIbrinogen into fibrin
How does calcium aid in clotting
Binds to γ-carboxylated glutamic acid in factors II, VII, IX and X
PTT vs PT
PT: extrinsic
PTT: intrinsic
Thrombin activities
Conversion of fibrinogen to fibrin
Platelet activation
Proinflammatory effects
Most common cause of mild bleeding defects
VWF defficiency
Complication of low platelet counts
Intracerebral hemmorhage
Defects in primary hemostasis present with:
Small bleeds in skin or mucosal membranes
Petechia and purpurura
GI bleeds, nosebleeds
Defects of secondary hemostasis present with
Bleeding in soft tissues and joints
Blood loss of __% leads to shock
20%
Virchow triad of thrombosis
Endothelial injury
Blood stasis/turbulence
Hypercoagulability
Heparin induced thrombocytopenia pathogenisis
Heparin forms complex with PF4 on platelet
Complex is bound by antibody
Platelet removed by macrophage
Antiphospolipid antibody syndrome charterized by
Presence of antiphospholipid antibodies
Thromoboses, pregnancy complications
Fetal loss in ntiphospholipid antibody syndrome due to
**Antibody mediated intereference **with growth and differentiation of trophoblasts which leads to failure in placentation