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
Which vasculitis is associated with arterioles, capillaries, venules, with lesions at the same stages?
Microscopicpolyarteritis
Which vasculitis is associated with arteries of the head, temporal arteries, opthalmic branch?
- what is a complication?
- population affected?
Temporal arteritis
blindness
elderly >50
What type of vasculitis involves both lungs and kidneys and has a >90% mortality in 2 years if left untreated?
wegener’s granulomatosis
Which vasculitis large vessels, affects aorta, main br of pulm aa?
- pop affected?
- symp?
Takayasu’s arteritis (pulseless disease)
younger people
Which vasculitis commonly affects infancy and early childhood?
- common symp
- which artery is commonly affected?
kawasaki’s
fever, erythema of palms and soles
coronary a
Which vasculitis is associated with cigarette smokers? It leads to thrombosis of which vessels?
It leads to which complication?
Buerger’s disease
medium sized vessels, tibial/radial arteries
- gangrene
- nerve pain
Which vasculitis involves clots forming in deep leg veins and can result in death from pulmonary emboli (saddle embolus)
thrombophlebitis
Which vasculitis is associated with cigarette smokers? It leads to thrombosis of which vessels?
Buerger’s disease
medium sized vessels, tibial/radial arteries
- gangrene in smokers
- nerve pain
Drivers of plaque instability
- MMP
- Intraplaque hemorrhage –> weaken core
- Macrophage apoptosis/necrosis
- secretes proinflammatory signals