Ch12: HTN, HLD, CHF Flashcards
(3) components of BP
- heart rate
- stroke volume
- peripheral vascular resistance
as we age, what happens to CO and PVR
cardiac output goes down (decrease in HR and SV)
PVR goes up
(4) primary target organs damaged with uncontrolled HTN
- brain
- cardiovascular system
- kidneys
- eyes
target organ damage from HTN: brain (2)
stroke, vascular (multi-infarct) dementia
target organ damage from HTN: cardiovascular system (4)
- atherosclerosis
- myocardial infarction
- left ventricular hypertrophy
- heart failure
1 cause of kidney failure in the US
hypertensive nephropathy
3x more common than diabetic nephropathy, the second cause
target organ damage from HTN: kidneys
- hypertensive nephropathy
- renal failure
target organ damage from HTN: eyes
- hypertensive retinopathy
- risk for blindness
Grade 1 & 2 hypertensive retinopathy (LOW GRADE)
- narrowing of the terminal arteriolar branches (grade 1) or severe local constriction (grade 2)
- no vision change or permanent findings
- reversible when HTN is treated
- common in long-standing poorly-controlled HTN
Grade 3 hypertensive retinopathy (HIGH GRADE)
- preceding signs (constriction of the aterioles) now with flame-shaped hemorrhages
- DBP is usually 110 or greater, HTN emergency
- potential for visual change and permanent findings
Grade 4 hypertensive retinopathy (HIGH GRADE)
- preceding signs (constriction of the aterioles, flame hemorrhages) now with papilledema
- DBP is usually 130 or greater, HTN emergency
- potential for visual changes (black spots in visual fields) and permanent findings
papilledema is a sign of….
increased intracranial pressure
JNC8 vs. AHA/ACC guidelines for blood pressure control goals
JNC8 = <140/<90 for nearly everyone
AHA/ACC = <130/<80 for nearly everyone
per ACC/AHA and JNC, what are the (4) first-line medication classes for HTN treatment
- thiazide diuretic
- calcium channel blocker
- ACE inhibitor
- ARB
per ACC/AHA and JNC, what are the (2) best choices for first-line medication class in treatment of HTN in Black adults
- thiazide diuretic
- calcium channel blocker
Per JNC8, what is the (2) best choices for medication class in treatment of HTN in adult with CKD
- ACE inhibitor
- ARB
Initial labs and diagnostics needed for someone with new diagnosis of HTN to facilitate CVD risk profiling, establish a baseline for medication use, and to screen for secondary causes of HTN:
- fasting blood glucose
- CBC
- lipids
- BMP (electrolytes, serum creatinine, eGFR)
- TSH
- urinalysis
- electrocardiogram (ECG – looking for chamber enlargement)
optimal dietary sodium restriction in HTN
optimal <1500 mg/day
alternatively, can reduce from current amount by at least 1000mg/day and remove the salt shaker off the table
optimal potassium intake in HTN
aim for 3500-5000 mg/day (not supplementation, but total through diet rich in potassium)
adequate potassium can reduce BP!
preferred anti-hypertensive for postmenopausal females with risk for osteoporosis
thiazide diuretics (e.g., HCTZ, chlorthalidone)
calcium-sparing diuretics = lower observed rate of fractures in folks who are long-term thiazide diuretic users
HTN diuretic =______
CHF diuretic = _______
HTN = thiazides
CHF = loops
thiazide diuretics deplete vs. spare which electrolytes
deplete sodium (Na+), potassium (K+) and magnesium (Mg++)
spare calcium (Ca+)
diuretic use and eGFR: thiazides, loops
thiazide diuretics preferred for HTN when eGFR >30, however they become ineffective when eGFR <30
once eGFR <30, loop diuretics remain effective
medication class: HCTZ
thiazide diuretic
medication class: chlorthalidone
thiazide diuretic
medication class: furosemide (Lasix)
loop diuretic
medication class: torsemide (Demadex)
loop diuretic
which is more potent: HCTZ vs. chlorthalidone
chlorthalidone
medication class: lisinopril (Prinivil, Zestril)
ACE inhibitor
medication class: enalapril (Vasotec)
ACE inhibitor
medication class: losartan (Cozaar)
angiotensin receptor blocker (ARB)
medication class: telmisartan (Micardis)
angiotensin receptor blocker (ARB)
MOA: thiazide diuretics for HTN ….
- HR
- SV
- PVR
reduce peripheral vascular resistance
MOA: ACE inhibitors for HTN…
- HR
- SV
- PVR
reduce peripheral vascular resistance
MOA: ARBs for HTN….
- HR
- SV
- PVR
reduce peripheral vascular resistance
ACE inhibitors and ARBs increase risk for which electrolyte abnormality
hyperkalemia (spare potassium)
priority medication in someone with HTN and comorbid T2DM
ACE inhibitors or ARB
angioedema risk in folks using ACE inhibitors
<1% of general population
risk factors = Black, Latinx, history of NSAID allergy
risk factors for angioedema with ACE inhibitor use (3)
- NSAID allergy (most potent risk factor)
- Black
- Latinx
risk factors for hyperkalemia for someone on an ACE or ARB (4)
- inadequate fluid intake (dehydrated)
- over-diuresis (dehydrated)
- renal impairment
- concurrent use of aldosterone antagonist (aka potassium-sparing diuretic)
medication class: amlodipine (Norvasc)
dihydropyridine calcium channel blocker
medication class: diltiazem (Cardiazem)
non-dihydropyridine calcium channel blocker
MOA: CCBs for HTN….
- HR
- SV
- PVR
reduce peripheral vascular resistance
peripheral vasodilators
edema is more common in [DHP vs. non DHP] calcium channel blockers, avoid use in heart failure or CKD
dihydropyridines (e.g., amlodipine)
d/t potent peripheral vasodilators
most potent class of antihypertensives, per Fitzgerald
calcium channel blockers
edema in CCBs is dependent on…..
dose (use lower doses)
which antihypertensive medications are not a good choice for someone with CHF, CKD, or liver impairment
DHP CCBs because they cause edema s/t potent peripheral vasodilation
medication class: atenolol (Tenoretic)
beta blocker
medication class: metoprolol (Lopressor)
beta blocker
MOA: beta blockers for HTN….
- HR
- SV
- PVR
lowers HR and SV
medication class: propanolol (Inderal)
beta blocker
medication class: spironolactone (Aldactone)
aldosterone antagonist / potassium-sparing diuretic
medication class: eplerenone (Inspra)
aldosterone antagonist / potassium-sparing diuretic
(1) cardio-selective beta blocker
metoprolol
(2) non-cardioselevtive beta blockers
propanolol
nadolol
avoid ______ [cardiac med] in folks with lower airway disease
non-cardioselective beta blockers (e.g., propanolol, nadolol)
beta blockers and lower airway disease?
avoid beta blockers that are non-cardioselective
cardioselective beta blockers are usually ok in COPD or asthma
priority electrolyte abnormality risk with aldosterone antagonists
hyperkalemia
particularly if used with an ACE or ARB
which cardiac medication class can cause gynecomastia with long-term use
aldosterone antagonists / potassium-sparing diuretics (e.g., spironolactone)
why are beta blockers not first line for HTN?
not that effective
why are aldosterone antagonists not first line for HTN?
very effective, but lots of side effects:
- hyperkalemia
- volume depletion/excessive diuresis
- gynecomastia
after starting someone on a new HTN medication, when should they come back for fup?
1 month
takes 1 mo to see full benefit of that dose of therapy
which common cold medication should be avoided in someone with HTN?
pseudoephedrine (Sudafed)
s/t vasoconstrictive effects
true or false: friends don’t let friends lower BP in clinic with short-acting meds like clonidine
TRUE!
don’t want to drop the BP too quickly and risk poor perfusion to the brain
in hypertensive urgency, no indication for immediate in-office BP reduction with short-acting antihypertensive agents such as clonidine, hydralazine, nitroglycerin, etc.
hypertensive urgency, aka….
asymptomatic elevated blood pressure
hypertensive urgency and emergency are both defined by blood pressure higher than….
> 180/>120
difference between hypertensive urgency and emergency
BP >180/>120 in both
however, urgency is asymptomatic
emergency includes symptoms or evidence of impending end organ damage such as visual changes, shortness of breath, grade 3 or 4 retinopathy, S3, tachycardia, distended neck veins (signs of CHF), pulmonary edema
intervention for outpatient generalist NP in hypertensive urgency
restart or intensify standard antihypertensive therapy
NO indication for referral to ED
NO indication for immediate in-office BP reduction with short-acting antihypertensives
intervention for outpatient generalist NP in hypertensive emergency
immediate transfer to the ED or ICU admission for careful BP reduction via parenteral medications
risks of hypertensive emergency
- intracerebral hemorrhage
- hypertensive encephalopathy
- acute ischemic stroke
- acute MI
- unstable angina pectoris
- dissecting aortic aneurysm
- acute renal failure
- eclampsia
lipid profile can be drawn fasting or non-fasting. however, if triglycerides are >_______, repeat in fasting state
TG >400 mg/dL
which antihypertensive medication should you prioritize in someone with evidence of LVH
ACE or ARB
why does she love carvedilol specifically
- beta blocker
- also has alpha blockade
- insulin sensitizing
components of a lipid panel for screening
- total cholesterol
- LDL cholesterol
- HDL cholesterol
- triglycerides
which part of the lipid profile is most affected by fasting vs. non-fasting
triglycerides
dietary change to reduce lipids
- increase fiber (10-25 g/day) and plant sterols/stanols (2g/day)
- decrease saturated fats (<7% of total calories)
- avoid trans fats entirely
- increase intake of omega-3 fatty acids (e.g., oily fish 2x weekly, flaxseeds, supplement)
High vs. Mod vs. Low intensity statin therapy reduces LDL by…..
High = 1/2 (50%) Mod = 1/3 (30-50%) Low = 1/4 (<30%)
there is no clinical indication for ____ intensity statin therapy as first line for anything
low
who should you be cautious in using a high intensity statin therapy (6)
- adverse effects
- age >75yo
- CKD
- frailty
- multiple comorbidities
- concurrent use of a fibrate
THESE ARE THE FOLKS MOST LIKLEY TO DEVELOP RHABDO
(2) high intensity statin therapy regimens
- atorvastatin 40-80mg
- rosuvastatin 20-40mg
(5) moderate intensity statin therapy regimens
- atorvastatin 10-20mg
- rosuvastatin 5-10mg
- simvastatin 20-40mg
- pravastatin 40-80mg
- lovastatin 40mg
(2) medications no longer recommended for dyslipidemia
- niacin
- resins (e.g., cholestyramine)
medication class: simvastatin (Zocor)
HMG-CoA reductase inhibitor
medication class: atorvastatin (Lipitor)
HMG-CoA reductase inhibitor
medication class: rosuvastatin (Crestor)
HMG-CoA reductase inhibitor
medication class: pravastatin (Pravachol)
HMG-CoA reductase inhibitor
expected effect of HMG-CoA reductase inhibitors on cholesterol
- significant reduction in LDL, as much as 50% or more
- minor increase in HDL
- minor decrease in TG
check this lab prior to starting a statin for HLD to establish a baseline (don’t need to routinely follow)
liver enzymes (AST/ALT)
only (3) statins that are CYP 450 3A4 substrates
simvastatin, atorvastatin, lovastatin
priority side effects of HMG-CoA reductase inhibitors
rhabdomyolosis, myositis
rare, but most often noted with higher statin doses and risk factors (e.g., frail elderly)
medication class: ezetimibe (Zetia)
selective cholesterol absorption inhibitor
only drug in its class!
oral tablet
effect of ezetimibe (Zetia) on cholesterol
- modest reduction in LDL up to 20%
- minor increase in HDL
side effects of ezetimibe (Zetia)
very well-tolerated! few side effects
works at the level of intestinal lumen alone, not really systemic-acting
medication class: alirocumab (Praulent)
PCSK9
(proprotein convertase subtilisin/kexin type 9)
SC injection only, VERY expensive
medication class: evolocumab (Repatha)
PCSK9
proprotein convertase subtilisin/kexin type 9
effect of PCSK9s on cholesterol
- significant reduction in LDL of 60% or more in folks already on a statin therapy
who is a possible candidate for PCSK9s? (2)
- add on to statin therapy in someone with familial hypercholesterolemia
- clinical ASCVD when goal LDL cannot be met on other therapies
effect of omega-3 fatty acids on cholesterol
- up to 30% reduction in TG
- minor increase in HDL
- no significant effect on LDL
this is only at the 4g dose
prescription strength omega-3 fatty acids
4g/day supplement
side effects of omega-3 fatty acid supplements
- increased risk of bleeding s/t modest antiplatelet effects
- GI upset
- “fishy” taste (this can be minimized by freezing the capsules, taking with food, and avoiding hot beverages after taking)
modest increased risk of bleeding with this dyslipidemia medication
omega-3 fatty acid supplements
medication class: fenofibrate (Tricor)
fibric acid derivatives (fibrates)
medication class: fenofibric acid (Triplipix)
fibric acid derivatives (fibrates)
effect of fibrates on cholesterol
- significant increase in HDL by 20%
- significant reduction in TG by up to 50%
- minor reduction in LDL
side effects of fibrates
myopathy, including rhabdomyolysis, particularly if taken with a statin
which two cholesterol medications should not be taken together d/t risk for rhabdo
statins + fibrates
(5) priority medication classes in the treatment of dyslipidemia
- HMG-CoA reductase inhibitors (statins)
- selective cholesterol absorption inhibitor (ezetimibe)
- PCSK9s (-mab)
- omega-3 fatty acids
- fibrates
best cholesterol medications for LDL (3)
- PCSK9s (60% or more reduction if already on statin)
- statins (up to 50% or more reduction)
- ezetimibe (up to 20% reduction)
best cholesterol medications for HDL (1)
- fibrates (up to 20% increase)
best cholesterol medications for triglycerides (2)
- omega-3 fatty acids (up to 30% reduction)
- fibrates (up to 50% reduction)
anyone with an LDL of _____, recommend high intensity statin therapy regardless of ASCVD score or presence of other risk factors
LDL >190 mg/dL
anyone with _______ comorbidity, recommend at least moderate intensity statin therapy regardless of presence of cholesterol levels, ASCVD score, or presence of other risk factors
T2DM and ages 40-75yo
low risk on ASCVD calculator %
<5%
borderline risk on ASCVD calculator %
5% - 7.5%
intermediate risk on ASCVD calculator %
7.5% - <20%
high risk on ASCVD calculator %
20% or higher
low risk on ASCVD calculator, recommend….
healthy lifestyle
borderline risk on ASCVD calculator, recommend….
healthy lifestyle
consider moderate intensity statin
intermediate risk on ASCVD calculator, recommend….
healthy lifestyle
moderate intensity statin
high risk on ASCVD calculator, recommend….
healthy lifestyle
high intensity statin
if risk-decision-making is ever uncertain in dyslipidemia, can consider measuring….
coronary artery calcium (CAC) scoring
interpretation of CAC scoring results
0 = low risk, don’t need to consider a statin unless they also have diabetes, family history of premature CHD, or smoke cigarettes
1 or higher = favors statin therapy, especially after age 55
100+ or 75% percentile = definitively recommends statin therapy
normal range triglycerides
<150 mg/dL
mildly elevated triglycerides range
150-199 mg/dL
moderately elevated triglycerides range
200-999 mg/dL
severely elevated triglycerides range
1000-1999 mg/dL
very severely elevated triglycerides range
2000 or higher mg/dL
risk for acute pancreatitis!
how high are triglycerides before risk factor for acute pancreatitis
> 1000-2000 mg/dL
common causes of high trigylcerides
- lifestyles = high carb diet, excess alcohol, sedentary, obesity
- T2DM, especially with poor glycemic control
- untreated hypothyroidism
- some medications (2nd gen antipsychotics, systemic corticosteroids, systemic estrogen, systemic retinoids)
recommended treatment for Triglycerides 199-499 mg/dL
statin therapy, lifestyle
recommended treatment for Triglycerides 500 mg/dL or higher
lifestyle, statins, consider omega-3 fatty acids or fibrates
at what level do you start to consider adding omega-3 fatty acids or fibrates to statin therapy for someone with elevated TG
TG 500 mg/dL or higher
lab test that can be used evaluate myositis in someone on statin therapy
serum creatinine kinase (CK)
INR goal in someone on warfarin therapy for a fib
2.0 - 3.0
why do almost all antibiotics increase risk of bleeding in someone on warfarin?
because warfarin is antagonized by vitamin K
vitamin K is produced by the gut microflora
all antibiotics disrupt the gut microflora
for any patient on warfarin, be concerned for increased risk of bleeding if on these other meds:
- all antibiotics (altered gut microflora reduces vitamin K)
- all NSAIDs (antiplatelet effect)
- gingko biloba (antiplatelet effect)
warfarin + St. Johns Wort
St Johns Wort is a CYP450 inducer
will increase metabolism of warfarin
decrease efficacy of warfarin
lowers INR, risk for clots
warfarin + antibiotics
increased risk for bleeding
altered gut microflora > decreased vitamin K synthesis > increased warfarin effect
warfarin + NSAIDs
increased risk for bleeding (NSAID antiplatelet effect)
warfarin + gingko biloba
increased risk for bleeding (antiplatelet effect)
(3) triad of symptoms in heart failure
- dyspnea
- fatigue
- edema
possible physical exam findings suggestive of CHF
- tachycardia
- increased JVP
- displaced apex
- S3 heart sound
- heart murmur
- pulmonary crackles
- dependent edema
PMH history suggestive of possible CHF
- previous MI or ACE inhibitor use
- HTN
- angina
- valvular disease or rheumatic heart disease
- palpitations
possible etiologies of CHF (6)
- LV dysfunction (systolic or diastolic)
- valvular disease
- congenital heart disease
- pericardial disease
- endocardial disease
- rhythm/conduction disturbance
ACC/AHA Stage A heart failure in primary care
Stage A = high risk for HF, but without structural heart disease or symptoms of HF
e.g., someone with HTN, DM, obesity, metabolic syndrome, family history
goals of therapy are to prevent ASCVD and LV abnormalities via heart healthy lifestyle, ACEI/ARB, statins prn
can be managed in outpatient primary care NP generalist
ACC/AHA Stage B heart failure in primary care
Stage B = evidence of structural heart disease but without signs or symptoms of CHF
e.g., patients with a previous MI, LVH, low EF, asymptomatic valvular disease
goals of therapy include preventing HF symptoms and preventing further cardiac remodeling
treatment includes ACI/ARB, beta blockers, statins
ICD, revascularization surgery, or valvular surgery as appropriate
thus, should be co-managed with a specialist (cardiologist)
LVH and reduced EF are both examples of….
cardiac remodeling (problematic)
(3) primary care medications for Stage A and B heart failure
- ACE/ARBs
- statins
- beta blockers (minimize risk of sudden cardiac death)
role of beta blockers in Stage B heart failure
minimize risk of sudden cardiac death (a risk in LVH)
ICD in heart failure is used to prevent….
sudden cardiac death