Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
37 Cards in this Set
- Front
- Back
Define Cardiomyopathy
|
intrinsic myocardial disease
Dilated: biventricular dilatation Hypertrophic: LVH, often RVH, hypercontractile heart Restrictive/Obliterative: nifiltration of myocardium reduces LV compliance due to normal sized but rigid wall |
|
Dilated Cardiomyopathy
|
hypocontractile heart with poor systolic function
LV size up, LV fill pressure up, daistolic compliance down, stroke volume down, ejec frac down, CO down S4 gallop |
|
causes of dilated cardiomyopathy
|
primary: genetic (dystrophin, transcription factors for myocyte genes, AD, X linked, mitochondrial)
secondary: drugs and toxins, chemo, pregnancy, metabolic dis (hyperthyroid, hypothyroid, thiamine def |
|
hypertrophic cardiomyopathy
|
LVH, RVH, hypercontractile heart
Diast Compliance down, stroke volume up, ejection fraction up, |
|
hypertrophic cardiomyopathy changes
|
asymmetrical: basal portion of v septum, can have LV outflow obstruction
symmetrical: no outflow obstruction, both have disarray of cardiac mycytes with whorling and side to side branching |
|
etiology of hypertrophic cardiomyopathy
|
beta cardiac myosin HC gene
sarclemmic disorder failure of force generation results in hypertrophy |
|
outcomes of dilated cardiomyopathy
|
DOE, palpitations, S4 gallop, CHF, 5 yr 25%,
need transplant |
|
outcomes of hypertrophic cardiomyopathy
|
palpitations, chest pain, DOE, syncope, sudden death, carotid upstroke strong, S4 100%,
treat with beta blocker or ca channel inhibitors |
|
Which cardiomyopathy is associate with amyloidosis
|
restrictive
|
|
Restrictive cardiomyopathy is associated with?
|
amyloidosis
|
|
Restrictive cardiomyopathy
|
infiltration of myocardium reduces LV compliance, rigid wall
LV filling pressure up, diastolic compliance down, SV down, EF down, CO down |
|
Etiology of restrictive cardiomyopathy
|
amyoloidosis localized (senile associated with old people) or systemic
conge red stain granulomatous disease, sarcoid, glycogen storage dis iron dep |
|
outcomes of restrictve cardiomyopathy
|
CHF, RHF, cardiomegaly, arrythmieas
10% 10yrs |
|
obliterative cardiomyopathy
|
subtype of restrictive reduecs v volume and decreases complaince
endomyocardial fibrosis endocardial fibroelastosis disappeareance of myocardial cells, fibrafatty replacement and parchment like thinning of myocardium, aneurysm, LBB, sudden death |
|
what does heart look like with myocarditis
|
inflammation of myocardium, primary infections, secondary systemic inflammatory (autoI or allergy),
heart enlarged with mild ventricular dilatation, microscopic focal myocyte necrsosis, severe inflammation viral: lymphocytes, edema bact/parasite: PMN, microabcess Auto: Eosinophil, no necrosisi |
|
what is most common cause of myocarditis
|
infectios agents most common, most documented are viral
coxsackie, polio, coryne, borrelia, rickettsial sometimes immunologic, post strep, SLE |
|
why is tamponode lethal?
|
often lethal complication of hemopericardium, sudden increase in pericardial pressure which itnerferes with function
acute 200-250 cc, usually in association with ruptured myocardial wall or avulsion of a great vessel diastolic filling ventricular volume and CO DOWN DOWN DOWN |
|
is location of cardiac myxoma clinically important
|
90% atrial, L:R 4:1, friable, mucoid tumors, benign but may frafment and embolize
|
|
clear yellow fluid in pericardium
|
serious pericardial effusion
|
|
srous fluid tinged with blood in pericardium
|
serosanguineous efffusion
|
|
lymphatic fluid in pericardial sac
|
chylous effusion
|
|
pure blood in pericardial sac
|
hempericardium
|
|
most common type of acute pericarditis
|
fibrinous
|
|
pericardial inflammation with effusion can rsult in formation of
|
adhesion and scarring
|
|
primary pericarditis is caused usually by
|
virus
|
|
most paricarditis is secondary and associated with
|
diseases elsewhere
|
|
serous pericarditis causes by
|
uremia, autoimmune disease, or unkown
rarely clinically significant |
|
bread and butter pericarditis
|
fibrionous
|
|
pus-laden transudate in pericardial space
|
suppurative pericarditis
|
|
hemorrhagic pericarditis caused by
|
transudative effusion, tumor, TB
|
|
caseous necrosis
|
caused by TB unles proven otherwise
|
|
most frequent cause of chronic constrictive pericarditis
|
TB with caseous necrosis in pericardial sac
|
|
obliteration of pericardial sac, causing increased workload
|
chronic pericarditis of adhesive mediastino/pericarditis type
|
|
small quiet hear with reduced output and pule pressure
|
constrictive pericarditis
dense fibrosis of pericardium, fibrocalcific scar |
|
secondary heart tumors order of occurence
|
metastatic lung, breast, mal mel, lymphoma/leukemia
|
|
most common type of cardiac tumor
|
myxoma
|
|
myxomas are found where
|
90% atrial
|