Taylors Flashcards
Changeable and reduces risk
HTN, SMoking
HTN confers and increase CAD risk through which 4 mech?
- sheer stress → endothelial cell injury
- arterial wall stress → pathological cell signaling
- circulating hormones → aldos + NE have adverse effects on wall
- increased heart work → LVH
HTN is a bigger risk factor in which, stroke or CAD?
Stroke!
How does HDL oppose atherothrombosis?
- blocks LDL oxidation
- Reverse cholesterol transport (enhanced)
- ↑ NO synthesis
- ↓ adhesion molecules
Diff between skeletal muscle and
myocardial muscle depends on aerobic metabolism!
*remember supply ox demand?
What change in blood vessel can compensate for the drop in pressure?
dilation of resistance vessels after stenosis
3 factors that increase myocardial oxygen demand
- HR
- Wall tension
- Inotropic state
Impaired ca2+ reuptake into SR results in __________
Decreased phosphates results in ________
diastolic dysfunction (cant reuptake into SR - cant relax)
Systolic dysfunction
3 causes of aortic aneurisms
atherosclerosis
marfans
syphylis
Monosomy X (Turner syndrome) results in which malformations?
coarctation of aorta
bicuspid aortic valve
hypoplastic left heart syndrome
DiGeorge
Noonan
Williams
results in which malformations?
DiGeorge: Tetralogy of fallot, truncus arteriosus, aortic arch deficit
Noonan: pulmonary stenosis
Williams: aortic stenosis
DiGeorge
Noonan
Williams
results in which malformations?
DiGeorge: Tetralogy of fallot, truncus arteriosus, aortic arch deficit
Noonan: pulmonary stenosis
Williams: Supravalvar aortic stenosis
Rubella (infectious) can result in which congenital malformation?
PDA
Describe A v B dissections
A - involves ascending aorta
B - dissections that take off after great vessels
Which vasculitis is associated with med-small arteries with lesions at various stages?
polyarteritis nodosa