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44 Cards in this Set

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How is cholesterol affected by age?
chol increases with age by 2 mg/dL per year during adulthood until age 65
How is cholesterol affected by Gender?
before age 50, total chol higher for men with 2X CHD risk that women, until after menopause, then by age 60, same
How is cholesterol affected by Genetics?
only a small number of pts have monogenic abnormality but these acct for the most severe hyperlipidemias and the most aggressive CAD. Family screening should be done in these identified cases.
How is cholesterol affected by Diet?
high in saturated fatty acids raises total and LDL, caloric excess and obesity affects triglycerides
How is cholesterol affected by thiazide?
thiazides increase LDL at least temporarily with doses over 50 mg/day.
How is cholesterol affected by Beta blockers?
cause slight HDL drop
How is cholesterol affected by Exogenous estrogen?
causes increase in triglycerides.
How is cholesterol affected by HIV protease inhibitors?
can greatly increase serum lipids.
How is cholesterol affected by Exercise?
increases HDL. Inactivity and obesity drop HDL.
How is cholesterol affected by Tobacco?
Smoking drops HDL
How is cholesterol affected by Comorbidities?
DM is assoc with high triglycerides and usually drops LDL
Secondary hypercholesterolemia can by triggered by?
1 hypothyroidism,
2 nephritic syndrome
3 obstructive liver disease (increase total and LDL)
Does position change lipid levels?
within 5 minutes of assuming a recumbent position, the TC levels drop to a max of 10-12% in 20-30 minutes.
Does stress change the lipid levels?
Chronic stress or serious illness can cause a drop in the total, so better to measure after recovery from acute infections, tissue necrosis or surgery.
Total chol = ?
LDL + HDL + VLDL
Most labs measure which part of the lipid panel?
total and HDL directly
How do you calculate VLDL? and LDL?
by dividing TG concentration by 5 (as long as it’s under 400) and then derive LDL value.
VAP profile (Verticle Auto Profile) tests for?
all cholesterol subtypes: total cholesterol, total LDL, total HDL, and triglycerides as well as component HDL 2 and HDL 3, Lipo (a)
and LDL particle size
large, buoyant LDL type?
A
small, dense LDL particle type?
B which is more atherogenic), and gives estimation of patient’s possibility for metabolic syndrome.
NCEP guidelines recommend measurement for lipids how often?
q 5 years for adults >20 of total and HDL with additional test depending on screening results (i.e. complete lipid profile if TC > 240 or 200-240 with other CAD risk factors present) and if pts have evidence of CHD, do full profile
Homocysteine?
is an amino acid that influences blood clotting and alters endothelium
Homocysteine has been recommend not to exceed?
7.
How do you lower homocysteine levels?
Increasing folic acid and vitamin B sources in the diet (foods such as citrus fruits, grains, vegetables)
Which meds help homocysteine levels?
(Folgard, Foltx) which contain both Vit B6, B12 and folic acid (1-2.5 mg folic acid).
Lp(a) ?
encourages cholesterol to build on vessel walls. Level is genetically induced.
Diet high in saturated fat and /or cholesterol induces?
high LDL levels
Higher estrogen levels in women induce?
higher HDL levels, which also increase with regular cardio exercise.
HDL drops secondary to?
smoking, obesity, hypertriglyceridemia. Single most powerful predictor of CHD risk and not too many therapeutic tools exist to increase HDL level.
Conditions to R/O which cause secondary hyperlipidemia include?
hypothyroidism (check TSH), nephritic syndrome (urine protein), DM (glucose).
Drug lipid interfering factors include?
thiazides (increase LDL), beta blockers increase TG, postmenop ERT drops LDL and increases HDL and TG.
CHD risk factors include?
male over 45, woman over 55 or premature menopause not on HRT (which is most women), FH premature CHD (ie. MI or sudden death in first degree male relative <55 or woman < 65), current smoking, HTN, low HDL, DM.
Cornerstone of treatment is lifestyle modification via?
dietary attention, reduce total fat, saturated fat, dietary chol (partially hydrogenated unsaturated FA)
Diagnosis of hyperlipidemia is based on?
serial measurement of serum lipids since biologic and analytic variations range 10-20%.
What kind of sample do you use to test for hyperlipidemia?
Use venous sample and send to lab with CDC standards.
LDL can be calculated via?
LDL = total – [HDL + TG/5
, TG/5 + VLDL and usually 20% of TG level. Can’t measure LDL when TG exceeds 400 with standard profile, but not a problem with VAP testing.
Lipoprotiens?
lipids and protiens
apopotien?
the protien part of lpoprotiens
How do you screen lipids?
check total and HDL which can be nonfast without identified risk factors and with established risk factors, do a 12 hour fasting check of total, LDL, HDL and TG
CRP?
is a marker of general inflammation
hs-CRP?
is more specific for endothelial inflammation.
How do you interpret hs CRP results?
Treatment for elevated hs-CRP recommended?
first line is ASA, if not effective low or even higher dose (81 then 325) the statins lower it.
If the hs CRP level remains persistent after treatment attempts or is persistently over 10, consider?
noncardiovascular problem and commence workup (CXR, abdominal sono, colonoscopy).
Lp(a) and cardioCRP (hsCRP) not yet routinely done for screening everywhere, but ?
recommended.