Exam 2 Flashcards
Why do we treat cholesterol?
Cholesterol = precursor to hormones LDL = leads to atherosclerosis; low density VLDL = very low density Apo B = linked to HDL Apo A = linked to LDL Non-HDL = inc number → inc risk of ASCVD
Describe the CTT landmark lipid trial (purpose, result of cycle 1, and result of cycle 2)
-CTT = Cholesterol Tx Trialist
-Purpose = address uncertainties by developing meta-analyses to inc power of lipid trials
-Result of Cycle 1 = statins safe and improved CV outcomes; linear relationship b/w LDL lowering and CV outcome reduction
-Result of Cycle 2 = more intensive LDL lowering → better CV outcomes
-Each 39mg/dL dec ASCVD risk by 21%
-Each 1% dec in LDL results in about 1% dec in risk of ASCVD
—Moderate intensity = 30% dec ASCVD risk
—High intensity = 50% dec ASCVD risk
SAMS abbreviation and assess symptoms (timeline, nature)
Statin associated muscle symptoms
Usually bilateral, proximal muscles
Onset weeks to months after starting therapy
Resolves with discontinuation
Possible non-statin etiologies for muscle pain (5)
- Hypothyroidism
- Dec renal/hepatic fx
- Rheumatologic disorders
- Vitamin D deficiency (some studies show adding vitamin D makes pt more able to tolerate statin)
- Primary muscle disease
If suspect myopathy/rhabdomyolysis
-Stop statin
-Check CK if severe SAMS and muscle weakness
-Assess for rhabdomyolysis
—CK >/= 10x ULN (men: 900; women: 700)
-Renal: inc SCr and/or inc UACR
-Can restart statin if rhabdomyolysis is reversible cause (drug interaction)
-Stop statin immediately if rhabdomyolysis is not reversible or can’t ID cause
If no reversible or identifiable cause, may need to stop statin indefinitely
What to do if pt has pain with a statin?
If pain with one statin, try lower dose with same statin. If still in pain, try a different statin. If still in pain, switch off statin therapy
SAMS management (what to do if you DON’T suspect myopathy or rhabdomyolysis)
-Stop statin
-Wait for SAMS to resolve
-Re-challenge with (select all that apply Q)
—Reduced dose of same statin
—Different statin
—Alternate dosing (intermittent)
-Monitor for re-emergence of SAMS
-Use max statin dose indicated and/or tolerated
-Moderate intensity statin + zetia may be alternative if high intensity statin isn’t tolerated
—And PCSK9 inh benefits those with familial Hyperlipidemia and ASCVD
Statins hepatotoxicity measurements/symptoms
LFTs at baseline
Measure again if hepatotoxicity symptoms arise with statin use
- Unusual fatigue/weakness
- Loss of appetite
- Abdominal pain
- Dark colored urine
- Yellowing of skin/sclera
Statin blood glucose effects
- Potent statins sometimes elevate BG
- Possible to get diabetes with statin use
- Several studies showed association —> led to FDA warning on statin label and generated discussion of risk vs benefit of statins in primary prevention
- JUPITER study (elaborate on different card)
Elaborate on JUPITER study for statins/BG
-JUPITER study re-evaluated to say pts with at least 1 DM risk factor have a 28% inc risk of developing DM
—But benefit 39% dec in composite of MI, stroke, and hospital admin for unstable angina; and 17% dec in total mortality
—Equates to 134 vascular deaths avoided for 54 new cases of DM
Diabetes risk factors
- African Americans, Hispanic, native Americans, Asian, Pacific Islander
- Family history
- Gestational DM
- Baby > 9 lbs
- PCOS
- HDL < 35 and/or TG > 250
Statins/blood glucose: pts with no risk factors
- No inc risk of developing DM
- Statins produced 52% dec in MI, stroke, hospital admin for unstable angina; 22% dec in total mortality
- Equates to 86 vascular deaths avoided with no new DM cases
What is considered ASCVD (select all that apply q)
Acute coronary syndrome (ACS) [recent = < 1 yr ago]
History of Myocardial infarction (MI, STEMI, NSTEMI)
Stable or unstable angina (SA or UA)
Stroke (CVA)
Peripheral Artery Disease (PAD)
Coronary/Arterial revascularization (stents)
Percutaneous transluminal coronary angioplasty (PTCA)
Coronary artery bypass graft (CABG)
Stroke or transient ischemia attack (TIA)
Peripheral arterial disease (PAD)
ASCVD = leading cause of
morbidity and mortality globally
Heart Dz in US
Leading cause of death in men and women
1 in every 4 deaths
Leading cause of death for most ethnicities (including AA, Hispanics, and whites)
Second to cancer in American Indians or Alaska Natives and Asians or Pacific Islanders
Stroke in US
1 out of 20 deaths
Happens every 40 seconds, & someone dies from it every 4 mins
87% are ischemic
Leading cause of long-term disabilities
ASCVD risk score calculator
Risk calculator developed by the NHLBI work group
Est the 10 year hard ASCVD risk of 1st event
Non-fatal MI, coronary heart disease death, fatal or non-fatal stroke
who to use risk calculator in
Developed using data from large, racially and geographically diverse, NHLBI-sponsored studies
Best used in
Non-Hispanic caucasians and African Americans
Aged 40-79
Pts with LDL 70-189mg/dL
Overestimates risk in Hispanics and Asians
Underestimates risk in American Indians (puerto ricans and south Asians)
what info is required to use ASCVD risk calc?
Age Sex Race Blood pressure Cholesterol panel DM: yes/no Smoker: yes/no On BP meds: y/n On statin: y/n On aspirin: y/n
screening pts
Adults 20+ years old, measure either fasting or non-fasting
If non-fasting results show TG >/=400, repeat with fasting panel
If LDL <70, measure direct rather than using Friedewald equation
Lifestyle management in hyperlipidemia
Try first and then with cholesterol-lowering drugs Adhere to a heart healthy diet Regular exercise (2.5 hours/week) Avoid ALL tobacco products Maintain healthy weight
Heart healthy diet in hyperlipidemia
Emphasize fruits, veggies, and whole grains
Include low-fat dairy products, poultry, fish, legumes, non-tropical oils, and nuts
Limit intake of sweets, sugar-sweetened beverages, and red meats
Reduce % of calories from saturated (keep at 5-6%) and trans fat
Lower sodium intake (1500-2400 mg/day)
Follow DASH, USDA, or AHA dietary patterns & Mediterranean diet
DASH
dietary approaches to stop HTN
Exercise for dyslipidemia
2.5 hours/week or aerobic activity with moderate to vigorous intensity
Pt can build up this regimen if needed and exercise can be in 10 min increments
Examples
Brisk walking, swimming laps, raking leaves, dancing, heavy home cleaning
Approach to treatment
Guidelines say “if on max statin and LDL still > 100, adding Zetia may be reasonable”
Primary prevention
haven’t had an ASCVD event yet and trying to prevent it
LDL >/= 190
Diabetes
ASCVD risk elevation
secondary prevention
already had a heart attack/stroke and trying to prevent a second one
Clinical ASCVD
what are the 4 statin benefit groups?
Clinical ASCVD
LDL >/= 190mg/dL (Age >/= 20)
Diabetes (Age 40-75, LDL b/w 70-189 mg/dL)
ASCVD Risk Score elevation (age 40-75, LDL b/w 70-189 mg/dL)
Secondary ASCVD Prevention (for pts who already had ASCVD event) (3 broad groups w/n)
ASCVD + Not high risk Age = 75
ASCVD + Not high risk Age > 75
ASCVD + Very High Risk
ASCVD + Not high risk Age = 75
High-intensity statin
Goal: dec LDL by at least 50%
Threshold: LDL >/= 70; non-HDL >/= 100
If on max statin and not reaching threshold → initiate Zetia
If on statin + zetia and not reaching threshold → PCSK9-I
ASCVD + Not high risk Age > 75
Moderate-intensity statin or high-intensity statin
Goal: dec LDL by at least 30% (or 50%)
Threshold: LDL >/= 70; non-HDL >/= 100
ASCVD + Very High Risk
History of multiple (>/= 2) ASCVD events OR 1 major ASCVD + at least 2 high-risk conditions
High-intensity statin
Goal: dec LDL by at least 50%
Threshold: LDL >/= 70; non-HDL >/= 100
If on max statin and not reaching threshold → initiate Zetia
If on statin + zetia and not reaching threshold → PCSK9-I
Primary Severe Hypercholesterolemia (group)
LDL >/= 190
Risk Enhancing Factors
REF
Premature family history of ASCVD
—= 55 male relative; = 65 female relative
Primary hypercholesterolemia
—LDL 160-189; Non HDL 190-219
Race/Ethnicity (ex: south asian)
Persistently High LDL (>/= 160)
Chronic Inflammatory conditions
—Lupus, HIV, RA, Psoriasis
Premature menopause and preg-associated condn that inc ASCVD risk
CKD
—eGFR < 60 ml/min, not on dialysis or kidney transplant
Metabolic syndrome (must have at least 3)
Persistent TG > 175 mg/dL
DM In adults (w/ LDL 70-189)
2 broad groups
DM 20-39yo
DM 40-75yo
DM 40-75yo w/ low ASCVD risk, and only 2 REF
Minimum of moderate intensity statin
DM 40-75yo
ASCVD risk >/= 20% OR >/= 2 DM specific risk enhancing factors
high intensity statin (goal of 50% dec in LDL and Non-HDL >/=130)
If goal not met → Zetia if ASCVD risk at least 20%
Multi risk factors alone is not enough to initiate high-intensity statin in DM pts; must meet threshold of LDL at least 70.
DM 20-39yo
> /= 2 DM specific risk enhancing factors & LDL >/=70
Moderate intensity statin
Primary Prevention (40-75yo w/o DM and with LDL >/= 70) (4 broad groups)
ASCVD Risk <5% “low risk”
ASCVD Risk >/=5% but < 7.5% “borderline risk”
ASCVD Risk >/= 7.5% but < 20% “intermediate risk”
ASCVD Risk >/= 20% “high-risk”
ASCVD Risk <5% “low risk”
Lifestyle modifications
ASCVD Risk >/=5% but < 7.5% “borderline risk”
> /= 2 ASCVD risk enhancing factors
Consider moderate intensity statin
Borderline pts with <2 REF or pts opposed to statin tx → use CAC to guide decision and convince the pt
ASCVD Risk >/= 7.5% but < 20% “intermediate risk”
> /= 2 ASCVD risk enhancing factors
Moderate-intensity statin
ASCVD Risk >/= 20% “high-risk”
High-intensity statin
Risk Factors for ASCVD
Age >/= 45 men; >/= 55 women Current Smoking HTN BP > 130/80 or use of antihypertensives Diabetes Sex (male > female)
Risk Enhancing Factors
REF
Premature family history of ASCVD
= 55 male relative; = 65 female relative
Primary hypercholesterolemia
LDL 160-189
Non HDL 190-219
Race/Ethnicity (ex: south asian)
Persistently High LDL (>/= 160)
Chronic Inflammatory conditions
Lupus, HIV, RA, Psoriasis
Premature menopause and preg-associated condn that inc ASCVD risk
CKD
eGFR < 60 ml/min, not on dialysis or kidney transplant
Metabolic syndrome (must have at least 3)
Metabolic syndrome (must have at least 3 of the following)
Inc waist (men >/= 40inches; women >/= 35 inches)
TG >/= 150 mg/dL
Elevated BP >/= 130/85 or antiHTN therapy
Elevated blood glucose >/= 100mg/dL fasting or on tax
Low HDL = 40 mg/dL in men; = 50 mg/dL in women
—Can inc HDL with exercise
Lipid/biomarkers
REF
Persistent TG > 175 mg/dL hsCRP >/= 2mg/dL Highly sensitive C reactive protein Inflammatory marker Lp(a) >/= 50mg/dL ApoB >/=130mg/dL Ankle brachial index (ABI) < 0.9 Compares BP between upper and lower limbs
Diabetes-Specific Risk Enhancing Factors
Long duration (>/= 10 yr for T2DM or >/= 20 yr for T1DM eGFR < 60 ml/min Albuminuria (>/= 30 mcg/mg) ABI < 0.9 Retinopathy Neuropathy
High-Risk Conditions
Age >/= 65 Heterozygous familial hypercholesterolemia Hx of CABG or PCI DM HTN CKD Current smoking Hx of HF Persistently elevated LDL >/= 100mg/dL even with max statin & Zetia
Low-Intensity Statins
Simvastatin 10mg Pravastatin 10-20mg Lovastatin 20mg Fluvastatin 20-40mg Pitavastatin 1mg
Moderate-Intensity Statins
Atorva 10-20mg Rosuva 5-10mg Simva 20-40mg Prava 40-80mg Lova 40mg Fluva XL 80mg Pitava 2-4mg
High-Intensity Statins
Atorva 40-80mg
Rosuva 20-40mg
Atorva
Lipitor; 10,20,40,80mg
Rosuva
Crestor; 5, 10, 20, 40mg
Simva
Zocor; 5,10,20,40,80mg
Prava
Pravachol; 10,20,40,80mg
Fluva
Leschol/Leschol XL; 20,40mg (80mg XL)
Pitava
Livalo; 1,2,4mg
Lova
Mevacor; 10,20,40mg
CAC
(Coronary Artery Calcium)
Useful with pts reluctant to start tx and want more information to make informed choice
Concerned abt reinitiation of tx after dc due to ADE
Who are older with little risk burden (M 55-80; F 60-80)
With borderline risk and RF and REF to better inform tx decisions
CAC interpretation
0: withhold statin and reassess in 5-10yr
1-99: initiate statin in pts >/= 55yo
>/= 100 or 75th percentile: start statin
Pt with CI to high intensity statin or do not tolerate ADE
Go to moderate intensity statin or to whatever intensity is tolerated
If no statin is tolerated → add non-statin tx
Triglycerides classification
Normal <150
Moderate 150-499
Severe >/= 500
Don’t solely tx TG unless “severe”
Moderately elevated TG treatment (20+ years old)
Lifestyle (obesity; metabolic syndrome)
—Waist circumference: men > 40, women > 35
TG > 150; high BP, high BG, low HDL: men < 40, women < 50
Rule out secondary factors
secondary factors to rule out for elevated TG tx
DM
Chronic liver disease or CKD (ckd is GFR <60)
Hypothyroidism
Meds that inc TG
Moderately elevated TG treatment (40-75 yo)
All steps for >20 yo
If persistently elevated TG level and ASCVD risk >/= 7.5% when tested on 2 separate occasions (different appointments)
Then consider statin therapy
May intensify if TG stays elevated
Severely elevated TG treatment (40-75 yo)
All steps for moderate
TG >/= 500 mg/dL, consider statin therapy (moderate) and can add fibrate but NOT bile acid sequestrant (bc they inc TG levels)
TG >/=1000
really need to change diet (do all of the following)
Moderate statin Very low fat diet Avoid refined carbs and alcohol Inc omega 3 FAs *can initiate fenofibrate if needed to prevent pancreatitis (a risk when TG >/= 500)
Meds that can inc TG (13)
Oral estrogen Tamoxifen Raloxifene Retinoids Immunosuppressives ***Beta blockers (at high doses)*** Atypical antipsychotics Protease inhibitors ***Glucocorticoids*** ***BAS*** Cyclophosphamide Interferons ***High dose thiazides***
Hyperlipidemia TX (list the 4 main points)
Monitor response
Safety
Monitoring for adverse
Patient education
Monitoring response of hyperlipidemia tx
Recheck lipid panel in 4-12 weeks after initiation or dose adjustments
How is adherence? Are they meeting goal? Are they achieving thresholds?
Then recheck lipid panel every 3-12 months if at/reaching goal
Statins Pt and provider discussion points (4)
Indications
Benefits
Risk of SAMS
Pt concerns and preferences
- *check CK at baseline in case of muscle complaints
- future appts: discuss adherence, statin response, reaffirm benefit, address any SAMS
SAMS (statin associated muscle symptoms?)
4
Myalgia (most common; subjective)
Myopathy
Myositis (rare)
Rhabdomyolysis (rare)
Rhabdomyolysis
Suspect if CK > 10 x ULN + signs of renal injury (inc SCr and inc UACR)
UACR: urine albumin to creatinine ratio
Pt complaints of severe muscle pain; usually in large muscle groups like thighs
other reasons CK gets elevated
Muscle cramps, injury, exercise
Baseline levels can be as high as 10x the ULN
NORMAL RANGE
Men: 25-90 IU/L
Women: 10-70 IU/L
Safety: statins and diabetes
-Evaluate for new-onset diabetes
-Risk of diabetes not a contraindication to statin therapy; benefit outweighs the risk
-For people at risk for diabetes, recommend lifestyle modifications to prevent DM
Exercise
Healthy diet
Moderate weight loss
Statins drug interactions
- Multiple CYP P450 interactions
- Most can be managed with mitigation strategy
- Be aware of what statin uses what P450 pathway
- DO NOT USE GEMFIBROZIL
Atorvastatin. List brand name, CYP and pt education
Lipitor; 3A4 (not as much as lova and simva); can take any time of day, avoid grapefruit juice; high intensity statin
Rosuvastatin. List brand name, CYP, and pt edu
Crestor; high intensity statin; 2C9; can take any time of day
Pitavastatin. List brand name, CYP, and pt edu
Livalo; 2C9 (minor 2C8); can take any time of day
Simvastatin. List brand name, CYP, and pt edu
- Zocor; 3A4; take at bedtime, avoid grapefruit juice
- Don’t use 80mg dose unless pt is already stable on it and not having ADEs (no new rxs for it bc so many ADEs)
- Max dose if giving with amiodarone or amlodipine or ranolazine is 20mg
No more than 10mg simva daily with verapamil and diltiazem
Lovastatin. List brand name, CYP, and pt edu
- Mevacor; 3A4; take at bedtime, avoid grapefruit juice
- Max dose with diltiazem, verapamil, Danazol, or amlodipine is 20mg lova
- max dose with amiodarone is 40mg lova
Pravastatin. List brand name, CYP, and pt edu
Pravachol; no CYP; take at bedtime
Fluvastatin. List brand name, CYP, and pt edu
Lescol; 2C9 (minor 2C8 & 3A4); take with evening meal
Niacin. What ya know about it?
-Nicotinic acid inc HDL and dec TG
-Flushing from highest to lowest chance
IR > SR > ER
-Titrate niacin doses slowly
-Take 325mg enteric coated aspirin 30 min before taking niacin to minimize flushing
-Tolerance to flushing will inc over time
-Take with food
-If miss a dose, just skip it
Niacin safety and monitoring
-Associated with hepatotoxicity (usually w/SR)
-Inc BG (watch in DM pts)
-Gout (esp big toe; too much uric acid)
-Monitor at baseline, up-titration, q6months
—LFTs
—Fasting BG or A1c
—Uric acid
-Don’t use if LFTs > 2-3x ULN (she will provide this info) or if persistent severe cutaneous symptoms, hyperglycemia, acute gout, unexplained ab pain/GI symptoms or if new onset of A-fib or weight loss
BAS basic info and dosing
-Can inc TGs
-Bind in GIT, trap cholesterol, and excrete it
-Colestipol (Colestid)
—5-20g (max 30g) [powder and tab]
-cholestyramine (Questran, Prevalite)
—4-16g (max 24g) [powder]
-colesevelam (Welchol)
—2.6-3.8g (max 4.4g) [powder and tab]
BAS pt edu
-Mix with non-carbonated beverages (juice, milk, water)
-Add drink to powder and drink immediately
-Drink before meals BID
-Drink a large glass of water with tablets
-Titrate dose to minimize side effects (should lessen over time)
-Dose must be separated from other meds
—Take other meds 1 hr before or 4 hrs after (select all that apply Q)
BAS ADEs and associated conditions
Associated with
- Pancreatitis
- GI upset
- Multiple drug interactions (absorption)
ADEs
-Constipation, abdominal pain, bloating, fullness, nausea, gas (less so with colesevelam)
BAS monitoring
-before starting, 4-6 weeks after starting, at 3 months, then every 6-12 months
—Fasting lipid panel
—Don’t use if baseline TG >/= 300 mg/dL
—Use with caution if TG 250-299
—Discontinue if TG > 400
CAI general comments, usual dose, and available preparations
- Zetia (add on therapy. Not first line)
- Generally well tolerated
- Usual daily dose: 10mg
- Available preparations: Zetia or Vytorin (combo with simva)
CAI monitoring, drug interactions, and ADEs
Monitor before starting and when clinically needed
- LFTs
- Discontinue if persistent ALT elevations >3x ULN
Drug interactions
-Gemfibrozil, cyclosporine, cholestyramine
Safety/ADEs
-No serious ADEs; arthralgia, diarrhea, possible gallstones (cholelithiasis)
Fibrates (meds, pt edu)
- Gemfibrozil (Lopid)
- Fenofibrate (Tricor)
- Generally well tolerated
-Pt education
-Not all fenofibrate formulations are bioequivalent
-LoFibra, original Tricor (54 or 160mg) and Lipofen
—Take with food
-New tricor (48 or 145mg), Antara, or gemfibrozil
—Without regard to food
-Triglide
—Without regard to food; no chipped/broken tabs
-Trilipix
—Without regard to food; indicated with statins
Fibrates monitoring
-Before starting, within 3 months, then q6months
-MUST MAKE RENAL ADJUSTMENTS
SCr and eGFR
—Don’t use if eGFR < 30 mL/min
—Discontinue if eGFR dec persistently to = 30 mL/min
—If eGFR 30-59 mL/min, dose of fenofibrate shouldn’t exceed 54 mg/day
Omega 3 FAs
-Lovaza (rx)
-Fish oil supplements
—Dose: 2-4g EPA + DHA daily can dec TG by 35%
—Make sure dose is reached if taking OTC
Associated with
- Fishy taste (refrigerate to minimize taste)
- GI disturbances
- Inc bleeding risk (minor)
Monitoring
-No labs required, confer with pts on side effects
Utilizing the Friedewald equation, calculate a patient’s LDL
Most cases, LDL is calculated not directly measured
- LDL = TC - [HDL + (TG/5)]*
- Equation is invalidated if TG >/= 400
Non HDL = TC - HDL
BP
amt of tension exerted by blood against the arterial walls measured in mmHg
Amt of force req for the heart to circulate the blood through the body
SBP
systolic; max blood pressure during ventricular systole (cardiac contraction)
DBP
minimal blood pressure in the vasculature at the end of diastole (cardiac relaxation)
Primary/Essential HTN
Unknown cause No secondary cause IDed Abt 90% of htn pts Multifactorial Genetics may play a role
Secondary HTN
Consequence of another disorder Could be result of… CKD** Primary aldosteronism** Obstructive sleep apnea** Cushing’s syndrome Aortic dissection Pheochromocytoma Pregnancy Thyroid disease drugs/substances Sudafed, amphetamines, BC bills, NSAID, Sodium, alcohol, cyclosporine
White coat HTN
Ambulatory blood pressure monitoring (ABPM)
Records bp at preset intervals over 24-48 hr
Used to confirm/exclude white coat htn
types of HTN
Isolated systolic HTN (ISH) Isolated diastolic HTN Pulmonary htn Pseudohypertension Masked htn white coat HTN primary/secondary HTN
HTN Prevalence & Epidemiology
~33% of americans dx
Only about 54.4% of HTN pts at goal
Most common among AA, elderly, low socioeconomic classes
Normotensive adults >55 have 90% chance of developing htn in their lifetime
Normal BP & Tx options
<120 & <80
Lifestyle modifications for prevention
Elevated BP & Tx options
120-129 & <80
Lifestyle modifications
Stage 1 HTN & Tx options
130-139 or 80-89
Antihypertensive + lifestyle if ASCVD risk >/= 10%
Stage 2 HTN & Tx options
> /= 140 or >/= 90
Antihypertensives + lifestyle regardless of ASCVD risk
urgency/emergency BP
> /= 180 or >/= 120