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embolism 2
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8 contributing factors to DVT
age
: greater than 70 years old
obesity
CHF
malignancy
burns
estrogen-containing drugs (birth control pills)
post-op
postpartum
death of lung tissure following loss of blood supply from a pulm embolism
pulmonary infarction
occurs rarely due to lung tissue receiving oxygen from three sources
directly from airway
perfusion part the embolus
collateral blood flow via bronchial arteries
infarction requires loss of at least how many os the sources
at least 2 sources
most common in patients w/ pre-existing pulm disease or CHF
infarction
mechanical occlusion of pulm artery results in
nonperfusion of a portion of the lung
pulm embolism can be called
deadspace disease
blood flow is shunted to other perfused lung areas which
increases v/q mismatching
increases A-a gradient results in
hypoxemia
reduction in cardiac output further contributes to
decreases oxygen content
surfactant is lost shortly after
occlusion of pulm artery
alteration in PAP pulm artery pressure degree is dependent upon severity of
occlusion
PAP increased work on the
right ventricle which could fail if occlusion is >50%
PAP left ventricle cardiac output could fail T/F?
True
False
true
dissolution of clot
fibrinolysis (tissue plasminogen activator TPA)
fibrinolytic factors can be found in
blood
endothelium of intima - innermost coat of a blood vessel
organization of thrombus eliminates portion of
clot not removed by fibrinolysis
organization of thrombus is slower process than
fibrinolysis
resolution of clot and return to patency takes (usually) from
7 to 10 days
Author
Anonymous
ID
46408
Card Set
embolism 2
Description
embolism 2
Updated
2010-11-01T05:20:20Z
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