Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
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 |