Heart Failure Flashcards
What are the typical causes of left sided HF?
htn, CAD, valvular disease
s/s of left sided HF
paroxysmal nocturnal dyspnea
orthopnea
crackles
wheezes
restlessness
exertional dyspnea
oliguria
what are the subtypes of left sided HF?
systolic and diastolic
what is systolic HF?
heart cannot contract forcefully enough during systole to eject adequate amounts of blood into circulation
ejection fraction is less than 35%
what is ejection fraction?
percentage of blood ejected from heart during systole
what is a normal ejection fraction?
50-70%
What types of patients are candidates for an ICD?
pts with an ejection fracture less than 30%
What is diastolic HF?
HF with preserved left ventricular function
left ventricle cannot relax causing inadequate filling
ventricle has to work harder
What is Right sided HF?
right ventricle cannot empty properly
increased volume and pressure cause edema
i.e. pulmonary hypertension
clinical manifestations of right sided HF?
JVD
hepatomegaly
anorexia and GI distress
ascites
dependent edema
polyuria
what is high output HF?
cardiac output remains normal or above normal
what causes high output HF?
increased metabolic needs
septicemia
high fever
anemia
hyperthyroidism
What is BNP what does it test for?
produced and released by the ventricles as they stretch in response to fluid overload
how much fluid you are retaining
what is the BNP for no HF?
100 or less
BNP for mild HF
100-300