Cardio Anderson Flashcards
What does the IVS come from
endocardial cushions
25% of all ventricular septal defects occur in the
membranous portion due to the complexity of fusing three separate components together
tetralogy of fallot
VSD, dextroposed aorta overriding the VSD, pulmonic stenosis, RV hypertrophy
IVS defect
most common congenital defect, may have asymptomatic holosystolic murmur or CHF, increased risk of endocarditis
bicuspid aortic valve
formed in two cusps as opposed to three, may lead to aortic stenosis
Where is the SA node
wall of Rt Atrium at SVC
where is the AV node
Septal wall of Rt. Atrium near coronary sinus
what valves close to form S1
mitral and tricuspid
what valves close to form S2
aortic and pulmonic valves
What is between S1 and S2
systole
what is between S2 and S1
diastole
Where is a regurgitant sound during systole
tricuspid or bicuspid
where is a stenotic sound during systole
aortic or pulmonic
where is a regurgitant sound during diastole
aortic or pulmonic
where is a stenotic sound during diastole
tricuspid or bicuspid
right and left coronary arteries fill during
diastole…right carries more blood
what does the right coronary artery supply
right ventricle and posterior left ventricle
what does the left coronary artery supply
divides into two main branches and feeds the anterior and lateral portions of the left ventricle
ischemic heart Dz
reduced coronary flow due to athersclerotic narrowing of coronary vessels and/or thrombosis, also may be due to coronary artery spasm
acute bacterial endocarditis
destructive, severe infection in normal heart valves, virulent organisms
subactue bacterial endocarditis
insidious course, previously abnormal heart, often microbes of low virulence
rheumatic heart Dz (everything plus what histologically)
secondary myocarditis, children following group A beta hemolytic strep infection, autoimmune… Aschoff Bodies
mitral valve prolaspe
most common valve disease, valve leaflets prolapse into atria during systole
calcific aortic stenosis
aortic semilunar valve becomes calcified, creating decreased aortic flow and increased left ventricular pressure, MC due to calcification of a congenitally bicuspid aortic valve