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77 Cards in this Set

  • Front
  • Back
secundum type ASD
most common type of asd
caused by excessive resorption of the septum primum or reduced size of septum secundum or both, causing an opening btwn the L & r atria
defect is in the center of the atrial septum at the foramen ovale
normal av vlaves
abx prophy is not needed

most clinically signifiant ASD
small defect = sx may be delayed as late as age 30
foramen ovale
fetal communication btwn r & l atria
remains normally patent in 25% of adults but paradoxical emboli may pass through a large patent FO
premature FO closure
occurs during prenatal life
r heart is hypertrophied while l heart is underdeveloped
most common congenital cardiac anomaly
vsd
l-> r shunt sx
excessive fatigue upon exertion
not cyanotic but causes marked proliferation of the tunica intima & media of the pulmonary arteries & arterioles. eventually pulmonary resistance > systemic, & shunt reversal occurs (eisenmenger complex) causing late cyanosis
transposition of great vessels
AP septum fails to develop in a spiral fashion
aorta on rv & pulmonary trunk on lv
r-> l shunting & cyanosis
infants that are born alive must have other defects that allow mixing of oxygenated & deoxygenated blood
tetralogy of fallot
most common cyanotic congenital heart dz in older kids & adults
associated w. downs
ap setum doesn't properly align
pulmonary stenosis
overriding aorta
IV septal defect
rvh
r-> l shunting w. early cyanosis that's usually present at birth
most common cyanotic congenital cardiac anomaly
persistant truncus arteriosus
only partial development of AP setum
only 1 large vessel leaves the heart & gets blood from both the rv & lv
r-> shunting w. cyanosis
always accompanied by membranous ventricular septal defect
O2 saturation in fetal circulation
highest = umbilical vein
lowest = ductus arteriosus
fetal circulation bypass
ductus venosus = allows bypass of the liver
FO + ductus arteriosus = bypass of the lungs
causes of sustain ductus arteriosus patency
PGE
intrauterine/neonatal asphyxia
PDA
common in preemies & maternal rubella infection
causes l-> r shunting
IVC passage through diaphragm
caval hiatus @ t8
esophageal passage through diaphragm
esophageal hiatus @ t10
aortic passage through diaphragm
aortic hiatus @ t12
what does lca supply
lv
la
anterior part of the IV septum
common systolic valvular defects
mitral insufficiency
aortic stenosis
common diastolic vavlular defects
mitral stenosis
aortic insufficiency
valve position during systole
mitral closed
aortic open
valve position during diastol
mitral open
aortic closed
artery & nerve damage in humerus surgical neck fracture
laceration of posterior humeral circumflex artery
axillary nerve lesion
artery & nerve damage in humerus midshaft fracture
laceration of profunda brachii artery
radial nerve lesion
artery & nerve damage in humerus supracondylar fracture
laceration of brachial artery
median nerve lesion
artery & nerve damage in medial epicondyle fracture
superior ulnar collateral artery
ulnar nerve lesion
source of colateral circulation around the axillary artery
subscapular artery anastamoses w. suprascapular artery
artery & nerve damaged in anterior compartment syndrome of the leg
anterior tibial artery
deep fibular nerve
artery & nerve damaged in posterior compartment syndrome of the leg
posterior tibial artery
tibial nerve
areas supplied by deep femoral artery
anterior & posterior thigh
shaft of femur
major source of blood supply to femur head
medial circumflex artery
aortic stenosis
diff in systolic lv & aortic pressure
murmur of aortic stenosis
crescendo decrescendo systolic
aortic regurgitation
diastolic aortic decreases rapidly as blood flows back into ventricle
ventricular diastolic pressure is elevated
murmur of aortic regurgitation
diastolic
mitral stenosis
diff in diastolic LV pressure & la pressure during filling
murmur of mitral stenosis
diastolic
mitral regurgitation
incompentent valve allows backflow into la during ventricular systole
murmur of mitral regurgitation
systolic
perfusion limited exchange
low capillary velocity still allows adequate time for diffusion
diffusion limited exchange
capillary velocity remains high
congenital anomaly of fetal alcohol syndrome
vsd
congenital anomaly of maternal rubella
exposure at 5th-10th wk can cause PDA, ASD & VSD
effect of l->r shunt
chronic rhf
secondary pulmonary htn
effect of r->l shunt
bypasses the lungs, producing a cyanosis as early as birth
paradoxical embolism in which dvt causes sytemic infarct
6 types of l->r shunts
vsd
asd
complete endocardial cushion defect
sinus venosus
patent FO
PDA
3 types of r->l shunts
tetralogy of fallot
transposition of great vessels
persistent truncus arteriosus
complete endocardial cushion defect
asd + vsd + a common atrioventricular valve
sinus venosus
defect in the upper part of the atrial septum
may cause anomalous pulmonary venous return into the svc or ra
primum type ASD
defect in lower atrial septum above av vlaves
associated w. anomaly of av vlaves
requires abx prophy for invasive procedures
preductal/infantile coarctation of the aorta
narrowing proximal to the opening of the ductus arteriosus
reversal of flow in intercostal arteries causes rib notching
postductal/adult coarctation of the aorta
narrowing distal to the opening of the ductus arteriosus
most common type, allows survival into adulthood
diff pressures in UE & LE
congenital pulmonic valve stenosis/atresia
unequal division of the truncus arteriosus so that the pulmonary trunk has no lumen or opening at the level of the pulmonary valve
may cause cyanosis if severe
congenital aortic valve stenosis/atresia
complete atresia is incompatible w. life

bicuspid aortic valves are asymptomatic, can lead to infective endocarditis, lv overload or sudden death.
these valves calcify in the 5th/6th decade.
#1 cause of aortic stenosis
heart defect associated w. marfan's
1/3 have aortic dilation & incompetence, aortic dissection & asd
heart defect associated w. down's
20% have congenital cv dz
heart defect associated w. turner's
coarctation of the aorta
heart defect associated w. 22q11 (digeorge's)
truncus arteriosus
tetralogy of fallot
heart defect associated w. congenital rubella
septal defects
PDA
pulmonary artery stenosis
heart defect associated w. maternal diabetes
transposition of great vessels
how many days post-mi does wall/papillary muscle rupture occur
3-7
2 vessels used for coronary artery bypass
saphenous vein
internal mammary artery
change in myocardium 1hr post MI
no gross changes seen
intracellular edema
change in myocardium 6-12hr post MI
no gross changes seen
wavy myocardial fibers
vacuolar degeneration
contraction band necrosis
beginning of neutrophil infiltration
change in myocardium 12-24hr post MI
grossly pale, cyanotic & edematous
wavy myocardial fibers
vacuolar degeneration
contraction band necrosis
beginning of neutrophil infiltration
change in myocardium 24-48hr post MI
area of infarct is well demarcated soft & pale
neutrophil infiltrate
cytoplasmic eosinophilia
coagulative necrosis
change in myocardium 3-10days post MI
infarct becomes soft, yellow & surrounded by hyperemic rim
monocyte infiltrate predominates at 72hrs
change in myocardium 2wks post MI
infarct area is surrounded by granulation tissue that's gradually replaced by scar tissue
5 major jones criteria
migratory polyarthritis
erythema marginatum
sydenham chorea
subcutaneous nodules
carditis
rheumatic heart disease
repeated bouts of endocarditis & inflammatory insult lead to scarring & thickening of the valve leaflets w. nodules along lines of closure

mitral valve most commonly affected w. fibrosis & deformity causing fish mouth stenosis.

mitral + aortic = #2

LA dilation
mural thrombi
rvh
predisposed to infective endocarditis
nutmeg liver occurs in which type of heart failure
rhf
acute endocarditis
high virulence organisms like s. aureus & strep
affects previously normal valves
tricuspid often involved in iv drug users
vegetation may form myocardial abscesses, septic emboli or cause valve destruction which results in insufficiency
high fever w. chills
subacute bacterial endocarditis
low virulence organisms, strep viridans, s. epidermidis, g(-) bacilli
candida is associated w. indwelling vascular catheters
affects previously abnormal valves
more insidious onset
(+) blood bulture
fatigue, lowe grade fever w.o chills, splinter hemorrhages
nonbacterial thrombotic endocarditis
associated w. chronic illness
mitral valve most commonly affective
sterile small vegetations are loosely adhered along the lines of closure
may embolize & provide a nidus for infective endocarditis
libman sacks endocarditis
nonbacterial verrucous endocarditis
mitral & tricuspid valvulitis in pt w. SLE
small warty vegetations are found on both sides of valve leaflets
doesn't embolize
myocarditis
dilation & hypertrophy of all 4 chambers
diffuse patchy hemorrhage
peripheral edema
cellular infiltrate in bacterial myocarditis
neutrophil
cellular infiltrate in viral myocarditis
mononuclear
cellular infiltrate in fiedler myocarditis
eosinophils