Chronic HF Flashcards
Heart Failure:
inability to provide enough oxygenated blood to the rest of the body
Risk factors for chronic heart failure
HTN Male Valve disorder Pregnancy Smoking Rx Drugs Alcohol/drugs pericarditis hyperthyroidism DM obesity
Presentation of chronic heart failure
SOB Edema-peripheral/pulm DOE Orthopenia Ascites Hepatomegaly heart murmurs
Describe systolic heart failure
- problem with ejection of blood to the lungs or systemic circulation
- result of hypertrophy and dilation of ventricle
- EF less than 40
Describe diastolic heart failure
- inability of the heart to fill appropriately
- results from stiffness of the myocardium
- more difficult to treat
- EF >55%
What is MC systolic or diastolic heart failure?
Systolic
What class is more effective in HF?
Loop Diuretics
Beta blockers to treat heart failure?
Metoprolol succinate
bisprolol
carvedilol
MOA BB?
blockage of beta receptors lead to decrease heart rate, decrease BP, increase coronary artery blood flow
BB indications (stages)
Can be used in stages A and B
Should be used in stage C
ADE BB
bradycardia
worse HF if dose is too high
respiratory issues
ACE I/ARB names
lisinopril
prils-sartans
ACE I/ARBS MOA
interference with RAAS ending with disrupting angiostensin II, produce decrease BP, Sodium/H2O retention, after load reducer
ACE I/ARBS indications
all stages of HF
goal dose is needed to max mortality/morbidity benefit
What meds are used in ALL stages of heart failure?
ACE I/ARBs
ADE ACE I/ARBsCI
ADE: hyperkalemia, cough, hypotension
CI: prego, hyperkalemia-K greater than 5.0, bilateral renal artery stenosis, angioedema
ACE I/ARBs excreted in the:
Kidneys
Spironolactone Eplirione
Aldosterone blockers
MOA spironlactone/eplirione?
compete w/aldosterone for intracellular mineralcortocoid receptor causing Na/H2O to excrete which decreases preload
Aldosterone blockers in indicated for which stages of HF?
C and D HF
ADE aldosterone blockers
hyperkalemia
gynecomastia
CI: hyperkalemia
Are aldosterone blockers protein bound?Where are they excreted?
Yes, Highly
Kidneys
Vasodilator drugs
hydralazine
isosorbide dinitrate
hydralazine MOA
direct arterial vasodilator- coronary, cerebral and renal arteries
HA (hydralzaine arterial)
Isosorbide dinitrate MOA
direct venodilator - convert into NO for vasodilation
Vasodilators are indicated for what patients?
African American pts with stage C HF (along w/ ACE, BB etc)
used in B/C/D HF
Not CI to ACE I
Any race!
ADE of vasodilators
Tolerance to nitrates
hypotension
CI: not really excreted
Are vasodilators dosed multiple times a day?
Yes so they have bad compliance
What are the Loop Diuretics?
Furosemide
butmetanide
torsemide
Whats the MOA of Loops?
Exert action at loop of henle
increases Na + H2O excreted
reduces preload and edema
What is the indication of Loops?
Initial: Sx HF (C or D)
goal: after diuresis + fluid reduction, get pt to lowest dose possible or consider d/c
ADE Loops
electrolytes- hypokalemia, hypomagnesemia, hyperglycemia, hyperuricemia
Do pts with renal failure need higher or lower doses of Loops?
Higher
MOA Digoxin
increase inotropic activity and decrease chronotropic activity
increase intracellular Na + Ca which increases force of contraction
Indication Digoxin
low dose for normal renal fxn
only in Sx HF stage C/D
elderly/renal insufficient- dose every other day!
ADE digoxin
Toxicity- monitor it!
electrolytes- hypokalemia, hypomagnesemia
bradycardia
GI disturbance
Why do the elderly/renal insufficient have a lower dose of digoxin?
a large VD
large in obese/small in elderly and primarily renally excreted
Drugs to use for Morbidity?
morbiDDDD
digoxin and diuretics
How does potassium effect digoxin?
hypoK increases effects
hyperK decreases effects
What are the 4 compensatory mechanism of HF
RAAS
SNS
Ventricular Hypertrophy
Frank Starlings Law of the heart
What blocks the RAAS
ACE-I ARBs Aldosterone blockers
What blocks the SNS
BB
What blocks ventricle hypertrophy
BB ACE-I ARBs Aldosterones
What Blocks the Frank Starling Law
Hx of HF because there is a natural temporary fixing of first event HF (NO hx MI)
What drugs are used to prevent mortality?
ACE I/ARBS
BBs
Aldosterone blockers
Vasodilators (in AAs)