Lecture Two: Cardiovascular Disease Flashcards
what is the leading cause of morbidity and mortality in the US
cardiovascular disease
which type of circulation removes carbon dioxide and re-oxygenates erythrocytes
pulmonary circulation
which type of circulation provides oxygen and nutrients to tissue; removes waste products of metabolism, growth, and repair
systemic circulation
what supplies blood and oxygen to the heart muscle
coronary arteries
other functions of the circulation system include…
circulates hormones and immune system components and body temp regulation
What are the primary forms of CVD
coronary heart disease *, stroke, heart failure , HTN, and congenital heart defects
what is cholesterol produced by
the liver
what molecule is necessary for production of cell membranes, steroid hormones, vitamin D, and bile acids
cholesterol
how is cholesterol transported in the blood
lipoproteins
which molecules transport substances from the tissues to the liver; these remove particles from fat molecules from macrophages in the wall of arteries
HDL
these molecules transport their content of fat molecules into artery walls and drive atherosclerosis
LDL
what are ideal levels of lipoproteins
high HDL and low LDL. LDL is bad
what is a major modifiable risk factor for CVD
Hyperlipidemia ( excess lipids in the blood)
what is a key contributor to atherosclerosis
hyperlipidemia
a total cholesterol of what amt increases the risk for CVD
160 mg/dl
These are factors of which condition: TG > 150 mg/dl, LDL > 130mg/dl, and HDL 200 mg/dl
hyperlipidemia
primary hyperlipidemia is mainly…
genetic
familial hypercholesterolemia, familial hypertriglyceridemia, and combined familial hyperlipidemia are all examples of which type of hyperlipidemia
primary :genetic
secondary hyperlipidemia is mainly…
polygenetic ( more common)
diabetes, thyroid/renal/liver dysfunction , cushings syndrome , obesity, alcohol consumption, diet, and estrogen therapy are examples of what type of hyperlipidemia
secondary: polygenetic
what are some ocular manifestations of hyperlipidemia
arcus, xanthelasma, lipemia retinalis
this is a molecule that is a macrophage and ingests lots of cholesterol
foam cell
which ocular manifestation tends to be in people over the age of 50
arcus
which ocular manifestation tends to be more familial and is an accumulation of foam cells in region of nasal canthus
xanthelasma ( TG > 1000 mg/dl)