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17 Cards in this Set

  • Front
  • Back
plasma lipids major components
1. triglycerides
2. cholesterol*
3. phospjolipids
plasma lipids functions
1. cell wall synthesis
2. steroid hormone synthesis
3. bile acid synthesis
4. energy source
-insoluble in water; require lipiprotein transport mech
lipoprotein
-spherical and the inside is made up of a fatty core
-outside has some cholesterol and phospholipids and big proteins that go through the cell membrane -->apolipoproteins:
A- HDL
B- LDL
classifications of lipoproteins
-chylomicrons: largest and least dense
-Chylomicrons> VLDL > IDL > LDL (mostly cholesterol) > HDL (more proteins) (largest and least dense to smallest and most dense)
-look at chart!
HDL
-delivers cholesterol back to the liver for repackaging and other things; thus takes it away from the peripheral tissues
-"good cholesterol"
Lipids
1. risk factor for atherosclerosis
2. reduction assoc. with dec acute coronary syndrome
3. testing is inexpensive and easy to perform
4. levels are used to determine effective therapy
Major risk factors (exclusive of LDL) that modify LDL goals
1. smoking
2. HTN
3. HDL <40 mg/dL^2
4. FH of premature CHD (male fist degree relative <55 or female first degree relative <65)
5. age (men >45; women >55)
Causes of high lipid levels
1. primary causes: happens on its own, FH
2 Secondary causes: dietary, meds, medical disorders, DM, alcohol, renal disease,hypothyroidism, diuretics, estrogens, B-blockers, antipsychotics
Clinical presentations of hyperlipidemia
-many ppl are asymptomatic
-xanthomas
-lipemia retinalis
lipid screening guidelines
-national cholesterol edu. programs adult tx panel III: men and women >20 yrs old fasting lipid panel every 5 yrs, earlier with other risk factors
-US preventative services task force: panel strongly recommended for men > 35 yrs old, women >45 w/inc risk for CHD; panel recommended for men 20-35 w/inc risk for CHD and women 20-35 w/inc risk for CHD
other lipid testing
-monitor pts being treated for dyslipidemia syndromes
Serum lipid panel
1. Total cholesterol
2. triglycerides
3. HDL
4. LDL
5. total cholesterol/HDL ratio
6. LDL/HDL ratio
lipid screening protocol
-patient condition/prep
1. "healthy"
2. 3 days of regular diet
3. nonpregnant
4. 1st 24 hrs after MI
5. nothing by mouth (except water) for 12-14 hrs for fasting lipid profile
-specimen collection
1. serum in red top tube or SST
interpretation of serum lipids
-no true reference ranges
-elevated lipids assoc. with CAD
-low total cholesterol: good health, proper diet and/or exercise OR immunodeficiency, severe liver disease, malnutrition
-low HDL: smoking, obesity, sedentary, steroid use, other meds
-western pops > asian pops
interpretation:
1. CHD and CHD risk equivalent
2. multiple (2+) risk factors
3. 0-1 risk factor
1. goal: <100 mg/l (<70*); > or equal to 100 consider drug therapy
2. < 130; riks factor dependent to consider drug therapy
3. < 160; > or equal to 190 to consider drug therapy
total and HDL cholesterol and tirglyceride goals
1. total: <200
2. HDL <60
3. < 150 mg/dL
TC/HDL ratio
<3 low risk
3-9 avg risk
>9 high risk