Heart Failure Flashcards
Classification of heart failure?
- Functional
NYHA - Stuctural
WHO/AHA
Causes of heart failure?
- Cardiomyopathy
- Hypertensive heart diseases
- Valvular heart disease
- Rheumatic heart disease
- Severe arrhythmias
- Congenital heart disease
- Ischemic heart diseases
What is heart failure?
a clinical syndrome where structural or functional abnormalities of the heart makes the heart unable to pump adequate amount of blood required by the metabolizing tissue of the body or can do so with elevated ventricular filling pressure.
What are the stages of heart failure?
Stage A - at risk
Stage B - pre-HF
Stage C - HF
Stage D - advanced HF
Describe stage A of HF?
patients risk for HF but without current or prior symptoms and signs of HF and without structural cardiac changes or elevated biomarkers of heart disease
Describe stage B of HF?
patients without current or prior symptoms or signs of HF with evidence of one of the following:
1. structural heart disease
2. abnormal cardiac function
3. elevated natriuretic peptide or cardiac troponin levels
Describe stage C of HF?
patients with current or prior symptoms and/or signs of HF causes by structural and/or functional cardiac abnormality
Describe stage D of HF?
severe symptoms and/or signs of HF at rest, recurrent hospitalizations
Classification of HF by ejection fracture?
- HF with reduced EF
- LVEF < 40% - HF with mildly reduced EF
- LVEF < 41-49% - HF with preserved EF
- HF with LVEF > 50% - HF with improved EF
- HF with a baseline LVEF of <40%
New York Heart Association functional Classification?
Class I - IV
NYHA class I?
- no limitation of physical activity
- ordinary physical activity does not cause HF symptoms
NYHA class II?
- slight limitation of physical activity
- comfortable at rest
ordinary physical activity results in HF symptoms
NYHA class III?
- marked limitation of physical activity
- comfortable at rest
- less than ordinary physical activity results in HF symptoms
NYHA class IV?
- HF symptoms at rest
- any physical activity causes HF symptoms
What are the forms of heart failure?
- Systolic failure/diastolic failure
- Forward failure/backward failure
- High output failure/low output failure
- Acute failure/chronic failure
- Right-sided failure/left-sided failure
Systolic failure and forward failure?
Inability of the ventricle to contract normally and expel sufficient amount of blood
Causes of systolic/forward failure?
- Ischaemic heart disease
- Myocardial infarction
- cardiomyopathy.
Clinical features of left ventricular systolic failure?
- Inadequate COP resulting in weakness
- fatigue
- exercise in tolerance and other symptoms of hypoperfusion
Diastolic and backward failure?
The ventricle is unable to relax and/or fill normally and adequately
- increase resistance to ventricular filling
Causes of diastolic/backward failure?
- Constrictive pericarditis
- Restrictive cardiomyopathy
- Hypertrophic cardiomyopathy
- Cardiac tamponade.