Antihyperlipidemics Flashcards
With statin therapy, how long does it usually take to see significant LDL reduction?
about 2 weeks
How long does it take for statin therapy to lower BP?
2 days. This occurs due to the stimulation of eNOS.
What are antihyperlipidemics or hypolipidemics?
drugs used to treat hyperlipoproteinemias that cause atherosclerosis/ coronary artery disease (CAD) and reduce risk of mortality to heart disease and stroke.
Also treat hypertriglyceridemia that may also cause acute pancreatitis when triglycerides (TGs) are markedly elevated.
What are the major lipids?
cholesterol and TGs that are transported via lipoproteins
What are apoproteins?
surface proteins on lipoproteins that interact with tissue membrane receptors to assist transport/ uptake to/from tissues (ex. apoB-100 is a ligand for LDL recepors=BAD)
How are lipoproteins correlated to CAD?
increased LDL and low HDL :(
These are associated with plaques (oxidized LDLs), foam cells, atherosclerosis, calcification, endothelial rupture, thrombosis, and MI.
What is Lp(a)?
atherogenic lipoprotein, genetically determined, related to LDL, and a risk factor for CAD.
What should normal LDL be?
Less than 100 mg/dL (2.59 mmol/L) — Optimal.
What should your LDL be if you have vascular disease?
How do you calculate LDL?
LDL= Total cholesterol - HDL - (TG/5)
What is a normal LDL/HDL ratio?
3 - 3.5. Anything above 3.5= increased risk for CAD.
What are the nonpharmacologic strategies to lowering LDL?
- eliminate smoking
- eliminate excess alcohol
- diet (fish oils, omega-3s)
- lose excess weight
- aerobic exercise
- control diabetes
- control thyroid function
**What are bile acid binding resins?
inhibit bile acid reabsorption from the gut and the result is compensatory increase in liver bile acid sythesis from cholesterol by increasing LDL receptors on the liver to remove LDL-cholesterol form the plasma, thus lowering cholesterol.
Usually second-line drugs, or used in combination with statins, fibrates, or niacin.
What are the 3 bile acid binding resins?
- Cholestyramine
- Colestipol
- Colesevelam
**What are the ADRs of bile acid resins?
- bloating, belching, gas, heartburn, and constipation.
- impairs absorption of fat soluble vitamins (A, D, E, K)
- may INCREASE VLDL-triglyceride levels due to increased liver TG synthesis. :(