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44 Cards in this Set
- Front
- Back
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How is cholesterol affected by age?
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chol increases with age by 2 mg/dL per year during adulthood until age 65
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How is cholesterol affected by Gender?
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before age 50, total chol higher for men with 2X CHD risk that women, until after menopause, then by age 60, same
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How is cholesterol affected by Genetics?
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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.
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How is cholesterol affected by Diet?
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high in saturated fatty acids raises total and LDL, caloric excess and obesity affects triglycerides
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How is cholesterol affected by thiazide?
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thiazides increase LDL at least temporarily with doses over 50 mg/day.
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How is cholesterol affected by Beta blockers?
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cause slight HDL drop
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How is cholesterol affected by Exogenous estrogen?
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causes increase in triglycerides.
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How is cholesterol affected by HIV protease inhibitors?
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can greatly increase serum lipids.
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How is cholesterol affected by Exercise?
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increases HDL. Inactivity and obesity drop HDL.
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How is cholesterol affected by Tobacco?
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Smoking drops HDL
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How is cholesterol affected by Comorbidities?
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DM is assoc with high triglycerides and usually drops LDL
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Secondary hypercholesterolemia can by triggered by?
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1 hypothyroidism,
2 nephritic syndrome 3 obstructive liver disease (increase total and LDL) |
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Does position change lipid levels?
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within 5 minutes of assuming a recumbent position, the TC levels drop to a max of 10-12% in 20-30 minutes.
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Does stress change the lipid levels?
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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.
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Total chol = ?
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LDL + HDL + VLDL
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Most labs measure which part of the lipid panel?
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total and HDL directly
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How do you calculate VLDL? and LDL?
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by dividing TG concentration by 5 (as long as it’s under 400) and then derive LDL value.
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VAP profile (Verticle Auto Profile) tests for?
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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 |
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large, buoyant LDL type?
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A
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small, dense LDL particle type?
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B which is more atherogenic), and gives estimation of patient’s possibility for metabolic syndrome.
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NCEP guidelines recommend measurement for lipids how often?
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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
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Homocysteine?
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is an amino acid that influences blood clotting and alters endothelium
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Homocysteine has been recommend not to exceed?
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7.
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How do you lower homocysteine levels?
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Increasing folic acid and vitamin B sources in the diet (foods such as citrus fruits, grains, vegetables)
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Which meds help homocysteine levels?
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(Folgard, Foltx) which contain both Vit B6, B12 and folic acid (1-2.5 mg folic acid).
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Lp(a) ?
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encourages cholesterol to build on vessel walls. Level is genetically induced.
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Diet high in saturated fat and /or cholesterol induces?
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high LDL levels
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Higher estrogen levels in women induce?
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higher HDL levels, which also increase with regular cardio exercise.
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HDL drops secondary to?
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smoking, obesity, hypertriglyceridemia. Single most powerful predictor of CHD risk and not too many therapeutic tools exist to increase HDL level.
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Conditions to R/O which cause secondary hyperlipidemia include?
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hypothyroidism (check TSH), nephritic syndrome (urine protein), DM (glucose).
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Drug lipid interfering factors include?
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thiazides (increase LDL), beta blockers increase TG, postmenop ERT drops LDL and increases HDL and TG.
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CHD risk factors include?
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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.
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Cornerstone of treatment is lifestyle modification via?
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dietary attention, reduce total fat, saturated fat, dietary chol (partially hydrogenated unsaturated FA)
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Diagnosis of hyperlipidemia is based on?
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serial measurement of serum lipids since biologic and analytic variations range 10-20%.
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What kind of sample do you use to test for hyperlipidemia?
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Use venous sample and send to lab with CDC standards.
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LDL can be calculated via?
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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. |
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Lipoprotiens?
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lipids and protiens
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apopotien?
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the protien part of lpoprotiens
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How do you screen lipids?
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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
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CRP?
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is a marker of general inflammation
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hs-CRP?
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is more specific for endothelial inflammation.
How do you interpret hs CRP results? |
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Treatment for elevated hs-CRP recommended?
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first line is ASA, if not effective low or even higher dose (81 then 325) the statins lower it.
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If the hs CRP level remains persistent after treatment attempts or is persistently over 10, consider?
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noncardiovascular problem and commence workup (CXR, abdominal sono, colonoscopy).
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Lp(a) and cardioCRP (hsCRP) not yet routinely done for screening everywhere, but ?
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recommended.
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