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
Antiphospholipid antibodies can cross react and be falsely positive in
Syphillis (treponema pallidium)
Lines of Zahn (what are they what do they signify)
Pale platelet and fibirn deposits
Signifies clott was made in flowing blood
Venous thrombus aka
Red thrombi
Stasis thrombi
Thrombi on heat valves aka
vegetations
Fat embolism syndrome characterized by:
Pulmonary insufficiency
Neurologic symptoms
Anemia
Thrombocytopenia
Amniotic fluid embolism presentation
Post partum:
severe dyspnea,
cyanosis,
shock,
neuro impairment,
DIC
Amniotic fluid embolism symptoms stem from
Biochemical activation of coagulation factors, immune system, vasoactive substances
Findings of amniotic fluid embolism on histo
Squamous cells, fat, hair, mucin
Dominant histologic characteristic of infarction
Ischemic coagulative necrosis
Brain infarction leads to
Liquefactive necrosis
Cytokine release syndrome
Cancer patients get CAR-T therapy and cytokines lead to SIRS