cardio day 2 PP2 Flashcards
bnp
Secreted by cardiomyocytes when they stretch
Decreases resistance, increases natriuresis, increases EF
Indicates CHF, but can also go up with things such as exercise
CHF ?
Heart isn’t pumping enough to meet the body’s needs
Structural and functional changes
Impaired systolic and diastolic function
CHF patho
Excessive activation of SNS and RAAS causing LV remodeling
CHF sx
Exertional dyspnea, orthopnea, PND, edema, fatigue, weight gail, abd distension, chest congestion, cyanosis
Rales and edema do not always = HF
CHF dx
2D echo/doppler
Stages of CHF
CHF trmt
Drugs used to block SNS and RAAS: (know)
Beta blockers
ACEI and ARBs
Aldosterone antagonists
Systolic CHF
cause
HTN, valvular disease, CAD, myocarditis
Chemo, infiltrative process, hypothyroidism, arrhythmia
Systolic CHF sx
Resting SOB, dyspnea on exertion, fatigue, weight gain, weakness, sweating, orthopnea, PND, chest pain/angina
Systolic CHF pe
Rales, JVD, peripheral edema, ascites, S3 gallop, murmur (MR), lateral PMI, cool extremities, diminished peripheral impulses, hypotension
Systolic CHF dx
Echo- LV EF less than 40%, LA and LV enlargement, wall motion abnormalities
X ray- cardiomegaly, pulmonary edema, pleural effusions
ECG- Q waves, IVCD (intraventricular conduction delay), LBBB, Afib, ST/T changes
Labs- high BNP, hyponatremia, cardiac enzymes
Diastolic CHF?
Heart can’t fill well
HF with preserved EF
Usually in older women
Impaired ventricular filling, chamber stiffness, increased left ventricular end diastolic pressure (LVEDP), LVH with small LV cavity
risks Diastolic CHF
HTN, CKD, CAD, aortic stenosis, aortic insufficiency, obesity, restrictive CMP, atrial arrhythmias, mitral regurg
causes Diastolic CHF
Systolic dysfunction, HTN, aortic stenosis, aortic insufficiency, DM, tachycardia, AFib, ischemia, age, obesity, constrictive and restrictive CMP
sx Diastolic CHF (similar to CHF)
Resting SOB, dyspnea on exertion, fatigue, weakness, sweating, orthopnea, PND, chest pain/angina
Diastolic CHF pe
Rales, S4, aortic stenosis murmur, edema
Diastolic CHF dx
ECG- atrial arrhythmias, LVH, ischemic changes
X ray- pulmonary congestion
Labs- high bnp, cardiac enzymes, high Cr and BUN, proteinuria
Echo- diastolic dysfunction, LVH, aortic stenosis, restrictive physiology “stiff heart”
mcc r side heart failure
L hf
causes R CHF
MCC is left sided CHF Chronic lung diseases Valve problems Pericardial constriction L to R shunt CAD
cor pulmonale ?
Change in structure and function of the right heart
cor pulmonale causes
Chronic lung disease, inc RV pressure, RVH, pulm HTN, acute PE, ARDS, RV dilation
pulm HTN?
Mean arterial pressure over 25 mmHg at rest
Increased RV afterload
Can lead to RHF
risks pulm HTN
Young adult, FH, drugs, high altitude
classification pulm htn
WHO group 1- idiopathic, younger pts, more females than males
WHO group 2- from left heart disease
WHO group 3- from lung disease or hypoxemia
WHO group 4- secondary to chronic thromboembolism
WHO group 5- from blood disorders, systemic disorders, and metabolic disorders, miscellaneous
Pulmonary HTN sx
SOB, nonproductive dough, angina, syncope, peripheral edema, orthopnea, PND