Dyslipidemia Flashcards
Types of dyslipidemia?
Primary (familial)
Secondary (acquired)
What’s a major risk factor for the development of coronary heart dx (CHD)?
Abnormalities of plasma lipoproteins resulting in predisposition to coronary, cerebrovascular, and peripheral arterial dx
List the secondary causes of hyperlipidemia
Diet - saturated or Trans fat
Drugs - diuretics, cyclosporine, Tacrolimus, glucocorticoids,
amiodarone
Diseases - biliary obstruction, nephrotic syndrome
Disordered & altered states of metabolism - hypothyroidism obesity etc
What’s the formula to calculate LDL if pt didn’t fast? When can’t this formula be used?
Friedewald eqn: LDL = TC - HDL - (TG/5)
Can’t be used when TG is > 400mg/dL
List natural pdts used for dyslipidemia
Red yeast rice
Garlic
OTC fish oils (used to lower TG when TG is >= 500)
Plant sterols/stanols
When is OTC fish oils used in dyslipidemia?
used to lower TG when TG is >= 500
What’s the key point of the new ATP guidelines!
There’s no evidence to support continued use of specific LDL or HDL tx targets.
Statins (primarily). Dosed at the appropriate intensity, are used in at-risk pts
When do u use nonstatin therapies in dyslipidemia?
When statins are NOT tolerated
What’re the 4 key pt groups for statin benefit?
Clinical atherosclerotic cardiovascular dx (ASCVD), including coronary heart dx (ACS, S/P MI, stable or unstable angina, coronary or other arterial revascularization), stroke, TIA, or peripheral artery dx thot to be of atherosclerotic origin
Primary elevations of LDL >= 190mg/dL
Diabetes + 40-75 yrs of age + LDL btw 70-189 mg/dL
40-75 yrs + LDL btw 70-189 mg/dL + estimated 10-yr ASCVD risk of >= 7.5% (using global risk assessment)
In what dx states should statin therapy by initiated?
Clinical atherosclerotic cardiovascular dx (ASCVD), including coronary heart dx (ACS, S/P MI, stable or unstable angina, coronary or other arterial revascularization),
stroke,
TIA,
peripheral artery dx thot to be of atherosclerotic origin
Whats the value of LDL req to start statin therapy?
Primary elevations of LDL >= 190mg/dL
What’s the other criteria that goes along with diabetes to start statin?
Diabetes \+ 40-75 years \+ LDL btw 70-189mg/dL
What’s the other criteria that goes along with 10yr ASCVD to start statin?
40-75 yrs \+ LDL btw 70-189 mg/.dL \+ Estimated 10-yr ASCVD risk >= 7.5% (using the global risk assessment tool)
Other factors may be useful in making a decision to start statin, if the 4 key factors results in inconclusive decision
Wrt LDL?
LDL >= 160mg/dL
Or
Other evidence of genetic hyperlipidemia
Other factors may be useful in making a decision to start statin, if the 4 key factors results in inconclusive decision
Wrt FH?
FH of premature ASCVD with onset
< 55 yrs in a first degree male relative
Or
< 65 yrs in first degree female relative
Other factors may be useful in making a decision to start statin, if the 4 key factors results in inconclusive decision
Wrt C-reactive protein?
High sensitivity C-reactive protein > 2 mg/dL
Other factors may be useful in making a decision to start statin, if the 4 key factors results in inconclusive decision
Wrt coronary artery Ca score?
Coronary artery Ca score >= 300 Agatston units
Or
>= 75 percentile for age, sex and ethnicity
Other factors may be useful in making a decision to start statin, if the 4 key factors results in inconclusive decision
Wrt Ankle Brachial index?
Ankle Brachial index < 0.9
What’s the 10-yr ASCVD score that indicates statin therapy needs to be started?
> = 7.5%
What statin tx should be started in primary elevation of LDL >= 190mg/dL?
High-intensity statin
What statin tx should be started in Diabetes + 40-75yrs + LDL btw 70-189mg/dL + estimated 10-yr ASCVD risk < 7.5%?
Moderate-Intensity statin
What statin tx should be started in 40-75yrs + LDL btw 70-189mg/dL + estimated 10-yr ASCVD risk < 7.5%?
Consider risk benefit
What statin tx should be started in 40-75yrs + LDL btw 70-189mg/dL + estimated 10-yr ASCVD risk >= 7.5%?
Moderate-to-high intensity
What statin tx should be started in Clinical atherosclerotic cardiovascular dx ASCVD risk < = 75yrs?
High-intensity statin
What statin tx should be started in Clinical atherosclerotic cardiovascular dx ASCVD risk > 75yrs?
Moderate-intensity statin
List conditions that req High-intensity statin
Primary elevation of LDL > 190mg/dL
Diabetes + 40-75yrs + LDL btw 70-189mg/dL + estimated 10-yr ASCVD risk >= 7.5%
Clinical atherosclerotic cardiovascular dx ASCVD risk < = 75yrs (2nd prevention)
What statin tx should be started in Diabetes + 40-75yrs + LDL btw 70-189mg/dL + estimated 10-yr ASCVD risk >= 7.5%?
High-intensity
List conditions that req Moderate-to-High intensity statin
40-75yrs + LDL btw 70-189mg/dL + estimated 10-yr ASCVD risk >= 7.5%
List conditions that req Moderate-intensity statin
Diabetes + 40-75yrs + LDL btw 70-189mg/dL + estimated 10-yr ASCVD risk < 7.5%
Clinical atherosclerotic cardiovascular dx ASCVD risk > 75yrs
List high-intensity statins
Atorvastatin (Lipitor) 40-80 mg daily
Rosuvastatin (Crestor) 20-40 mg daily
Effect of high-intensity statins (Atorvastatin (Lipitor) 40-80 mg/d and Rosuvastatin (Crestor) 20-40 mg/d) on LDL?
Reduces LDL >= 50%
List moderate-intensity statins
Atorvastatin (Lipitor) 10-20 mg/d Rosuvastatin (Crestor) 5-10 mg/d Simvastatin 20-40 mg/d Pravastatin 40-80 mg/d Lovastatin 40 mg/d Fluvastatin XL 80 mg/d Fluvastatin 40 mg bid Pitavastatin 2-4 mg/d
Effect on moderate-intensity statin on LDL?
Daily dose reduces LDL 30-40%
List low-intensity statins
Simvastatin 10 mg/d Pravastatin 10-20 mg/d Lovastatin 20 mg/d Fluvastatin 20-40 mg/d Pitavastatin 1mg/d
What criteria is needed to use non-pharmacologic therapy?
Adults < 80yrs +/- CVD
Increase Vegs, fruits, and whole grains
True
Calories from saturated fat (non-pharmacologic therapy)?
5-6% of calories from saturated fat
Reduce % of calories from Trans fat
Aerobic activity (non-pharmacologic therapy)?
3-4 session/wk; lasting 40 mins/session + moderate-to-vigorous intensity
Effect of increased physical activity on LDL?
Can reduce LDL 3-6 mg/dL
Preferred BMI (non-pharmacologic therapy)?
18.5 - 24.9 kg/m2
Tobacco pdt (non-pharmacologic therapy)?
Avoid tobacco pdts
What’s the drug of choice in treating elevated LDL?
Statins
What’s used to determine appropriate statin intensity chosen?
Pts level of risk
What SE is common to many of the drugs used in dyslipidemia?
Potentially hepatotoxic
T4 liver enzymes should be monitored
When should dyslipidemia therapy be d/c?
AST (8-48 units/L)
Or
ALT (7-55 units/L)
Become > 3 times the upper limit of normal
Mgt of mild-to-moderate muscle sx associated with statin use?
D/c statin and evaluate sx
Check for other conditions/ meds that can cause muscle damage
Restart, if sx resolves
MOA of statins?
Inhibit the enzyme 3-hydroxy-3-methylglutaryly coenzyme (HMG-CoA) reductase
Thus prevention conversion of HMG-CoA to mevalonate
What’s the rate-limiting step in cholesterol synthesis?
Conversion of HMG-CoA to mevalonate (which is the step prevented by statins)
List main statins
Atorvastatin (Lipitor)
Simvastatin (zocor)
Rosuvastatin (Crestor)
Pravastatin (Pravachol)
Lovastatin (Mevacor, Altoprev)
Fluvastatin (Lescol, Lescol XL)
Pitavastatin (Livalo)
What’s the brand name of Atorvastatin?
Lipitor
What’s the brand name of Simvastatin + Ezetimibe?
Vytorin
Whats the brand name of Rosuvastatin?
Crestor
What’s the equivalent dose of Atorvastatin (Lipitor)?
10mg
What’s the equivalent dose of Simvastatin (Zocor)?
20mg
What’s the equivalent dose of Rosuvastatin (Crestor)?
Equiv dose = 5 mg
What’s the equivalent dose of Lovastatin and Pravastatin?
40 mg
What’s the equivalent dose of Fluvastatin?
80mg
What’s the equivalent dose of Pitavastatin?
2
Which statin is used in the evening?
Simvastatin
Mevacor (Lovastatin immediate release)
Which statin is used at bedtime?
Fluvastatin (Lescol)
Altoprev (Lovastatin ext-release)
CI to statin use?
Active liver dx (including any unexplained elevations in hepatic Transaminases)
Pregnancy
Warnings associated with statin use?
Skeletal muscle effects (e.g. Myopathy, including risk of rhabdomyolysis)
Factors that increase risk of Skeletal muscle effects (e.g. Myopathy, including risk of rhabdomyolysis)?
Higher doses of statins
Concomitant use of certain medicines
> = 65 yrs
Female
Uncontrolled hypothyroidism
Renal impairment
Effect of statin on A1C?
Statin can cause an increase in A1C and FBG
But benefits of statin therapy far outweigh the risk of hyperglycemia
SEs of statins?
Myalgia
Arthralgias
Myopathy
Diarrhea
Increased CPK
Rhabdomyolysis (increase risk with higher dose)
Cognitive impairment (memory loss, confusion - reversible)
Increased BG
Increased A1c
Possible increase risk of cataracts
Increase LFTs
Monitoring of statins?
LFTs at baseline and as clinically indicated thereafter
Lipid panel 4-12 wks after initiation or up titration, then Q 3-12 months thereafter
What’s the preg cat of statin?
X
Which statins can be taken anytime of the day?
Crestor (Rosuvastatin)
Lipitor (Atorvastatin)
Livalo (Pitavastatin)
Lescol XL (Fluvastatin)
Pravachol (Pravastatin)
Which statins don’t need renal dose adjustment?
Lescol (Fluvastatin)
Lipitor (atorvastatin)
Which statin do u dose adjust when CrCl is < 60 ml/min
Livalo (Pitavastatin)
Which other dyslipidemia agent use is CI with statin?
Fibrates esp, Gemfibrozil
Effect of niacin pdt containing >= 1gm and statin? (And statin + colchine)
Increase risk of myopathies
Are Lovastatin, simvastatin and atorvastatin 3A4 inducers, inhibitors, substrates?
3A4 substrates
Effect of Lovastatin, simvastatin and atorvastatin being 3A4 substrates?
LAS, undergo extensive first-pass metabolism by CYP 3A4
What dose of simvastatin should a pt not be started on? (Pts that are currently on this dose, may continue)
80mg / day
What meds should u not exceed simvastatin 10mg/day with?
Verapamil
Diltiazem
Dronedarone
What meds should u not exceed simvastatin 20mg/day with?
Amiodarone
Amlodipine
Ranolazine
If pt is on Verapamil/ Diltiazem/ Dronedarone, what dose of simvastatin may also be used in this pt?
No more than 10mg/ day of simvastatin
If pt is on amiodarone/ amlodipine/ Ranolazine, what dose of simvastatin may also be used in this pt?
No more than 20mg/ day of simvastatin
What meds should u not exceed lovastatin 20mg/day with?
Danazol
Diltiazem
Dronedarone
Verapamil
What meds should u not exceed lovastatin 40mg/day with?
Amiodarone
If pt is on amiodarone, what dose of lovastatin may also be used in this pt?
No more than Lovastatin (Mevacor) 40mg/d
If pt is on danazol/ Dronedarone/ Diltazem/ verapamil, what dose of lovastatin may also be used in this pt?
No more than Lovastatin (Mevacor) 20mg/d
What meds should be avoided with Atorvastatin (Lipitor)?
Cyclosporine
Tipranivir + Ritonavir or Telaprevir
What meds should u not exceed atorvastatin 20mg/day with?
Clarithromycin
Itraconazole
Lopinavir + Ritonavir
Darunavir + Ritonavir
Fosamprenavir +/- Ritonavir
What meds should u not exceed atorvastatin 40mg/day with?
Nelfinavir
Boceprevir
What types of meds are to be avoided with simvastatin and Lovastatin (Mevacor)?
Itraconazole, Ketoconazole, Posaconazole, Voriconazole
Erythromycin, Clarithromycin, Telithromycin
HIV protease Inhibitors
Boceprevir, Telaprevir
Nefazodone
Cyclosporine
Gemfibrozil
Danazol (with simvastatin)
Grapefruit juice
Sx of liver damage from statin use?
Brown or dark colored urine
Pale stools
Feel more tired than usual
Skin and/or whites of eyes become yellow
Sx of muscle damage from statin use?
Muscle weakness, tenderness, aching, cramps, stiffness or pain that happens without a good reason, esp if u also have a fever or feel more tired than usual
MOA of Ezetimibe?
Inh absorption of cholesterol at the brush border of small intestine
Brand name of Ezetimibe?
Zetia
Brand name of Ezetimibe + Simvastatin?
Vytorin
Preg category of Ezetimibe (Zetia)?
C
How do u dose bile acid resins with Ezetimibe (Zetia)?
Give Ezetimibe (Zetia) 2 hrs before
OR
4 hrs after bile acid resin
What’s the concern with Vytorin (Ezetimibe + Simvastatin)?
Increased muscle damage
MOA of bile acid sequestrants/ bile acid binding resins?
Binds Bile acids in intestine forming a complex excreted in feces
T4 preventing re-absorption
List bile acid sequestrants/ bile acid binding resins agents
Cholestyramine (Questran, Prevalite)
Colesevelam (Welchol)
Colestipol (Colestid)
What’s the grand name of Colesevelam (bile acid sequestrants/ bile acid binding resins)?
Welchol
How do u take Cholestyramine?
Comes in powder
Mix with water or non-carbonated liq
How do u take Colesevelam (Welchol)?
With a meal + liquid
SEs of bile acid sequestrants/ bile acid binding resins?
Constipation (may need dose reduction or laxative)
Abdominal pain
Cramping
Gas
Bloating
Hypertriglyceridemia
When does ATP IV guidelines not recommend the use of bile acid sequestrants/ bile acid binding resins (Cholestyramine, Colesevelam (Welchol), and Colestipol)?
TGs >= 300mg/dL
Why does ATP IV guidelines not recommend the use of bile acid sequestrants/ bile acid binding resins (Cholestyramine, Colesevelam (Welchol), and Colestipol)?
Bcuz they have NO effect on TGs and may even increase TGs in some cases
Possible SE of cholestyramine (Questran, Prevalite)?
Teeth discoloration, erosion of enamel/ decay
Sipping or holding the suspension in mouth for prolonged periods
Which bile acid sequestrants/ bile acid binding resins (Cholestyramine, Colesevelam (Welchol), and Colestipol) is considered safest?
Colesevelam (Welchol)
Still consider separating other drugs by 1-4 hrs
Whys the use of concurrent multivitamin recommended with the use of bile acid sequestrants/ bile acid binding resins (Cholestyramine, Colesevelam (Welchol), and Colestipol)?
They may reduce absorption of fat-soluble vits (A, D, E, K)
MOA of fibrates?
Fibrates are peroxisome proliferator receptor alpha (PPARalphasign) activators
Resulting in enhanced elimination and reduce synthesis of VLDL (lower TGs) and higher LDL
What’s the caveat to reducing TGs?
When TGs are high, reducing TGs may result in HIGHER LDL
T4 be careful to monitor LDL, when reducing TGs
Results of ACCORD lipid study wrt fenofibrate use?
Study showed no significant difference in experiencing a major cardiac event btw using fenofibrate + simvastatin and fenofibrate alone.
But, it found that using the combo of fenofibrate + simvastatin caused worsening of renal fxn
List agents under fibrates
Fenofibrate, Fenofibric Acid (TriCor, Trilipix)
Gemfibrozil (Lopid)
What’s the most common brand names of Fenofibrate, Fenofibric acid?
TriCor
Trilipix
What’s the brand name of Gemfibrozil (fibrate)?
Lopid
What’s the caveat to consider when using fibrates (fenofibrate/ Gemfibrozil) in a pt with high TGs?
Can increase LDL when TGs are high
Which fibrate is the ONLY one with an indication to use with a statin?
Trilipix
MOA of niacin?
Decreases rate of hepatic synthesis of VLDL (lowers TGs) and LDL
What’s niacin also known as?
Nicotinic acid
Or
Vitamin B3 (although doses for cholesterol reduction are much higher than those found in multivitamin pdts)
List agents under Niacin
Immediate-Release (crystalline) niacin (Niacor) - OTC
Extended-Release Niacin (Niaspan)
Controlled-(or sustained) Release Niacin (Slo-Niacin) - OTC
What’s the brand name of Extended-Release Niacin?
Niaspan
In what strength do Extended-Release Niacin (Niaspan) come in?
500mg
750mg
1000mg
SE of Niacin use
Flushing
Pruritus (itching)
Nausea/ vomiting
Diarrhea
GI distress
Hyperglycemia
Hyperuricemia (or gout)
Increased cough
Hepatotoxicity
Orthostatic hypotension
Hypophosphatemia
Monitoring parameters of Niacin use?
Check LFTs (at start of baseline; Q 6-12wks for first yr)
BG (if diabetic)
Uric gout (if gout)
INR (if on warfarin)
Which formulation of Niacin has less flushing and less hepatotoxicity? T4 best clinical choice from Niacin Grp?
Niaspan (but, it’s most expensive)
Are formulations of Niacin interchangeable?
No! (Applicable to regular release v. Extended release)
How should u use Niacin in combo with statins?
Stick to lower statin doses
How should u use Niacin and Bile acid Sequestrants (Colevelesam (Welchol))?
Take Niacin 4-6 hrs AFTER bile acid sequestrants
Use of fish oils?
Adjunct to diet in pts with TGs >= 500mg/dL
List agents under fish oil
Omega-3 acid Ethyl Esters (Lovaza)
Icosapent ethyl (Vascepa)
What’s the brand name of Omega-3 Acid Ethyl Esters?
Lovaza
SEs of fish oils?
Eructation (burping)
Dyspepsia
Taste perversions (Lovaza) Arthralgias (Vascepa)
Which fish oil can increase LDL by up to 44%?
Lovaza ONLY
No such increase seen with Vascepa
Effect of omega-3-acids (fish oil) on bleeding out?
Lovaza and Vascepa may prolong bleeding time
List new agents used for Homozygous Familial Hypercholesterolemia (HoFH)
Lomitapid
Mipomersen
MOA of Lomitapide?
Lomitapide binds to and inhibits microsomal TG transfer protein (MTP) in the endoplasmic reticulum
What’s the brand name of Lomitapide?
Juxtapid
Pregnancy category of Lomitapide (Juxtapid)?
X
MOA of Mipomersen?
Mipomersen is an oligonucleotide inhibitor of apo B-100 synthesis.
ApoB is the main component of LDL and VLDL, which is a precursor to LDL
What’s the brand name of Mipomersen?
Kynamro
What’s the CI to Mipomersen (Kynamro) use?
Liver dx (including unexplained elevations in hepatic Transaminases)
Due to risk of hepatotoxicity, howz Mipomersen (Kynamro) made available?
Only available through a Kynamro Risk Evaluation and Mitigation Strategy (REMS) program
What med can be used as a pre-tx to prevent flushing caused by Niacin agents?
325mg aspirin (or 200mg of ibuprofen) 30-60 mins before dose (for a few weeks)
List drugs that significantly reduce TGs by > 10%?
Fibrates
Fish oils
Niacin