Teach heart Failure Flashcards
Most common cause of HF
Coronary artery disease
Etiologies of heart failure per EF
Depressed EF <40 CAD HTN Valvular disease Dilated C Toxic CM For pulmonary
Preserved EF>40-50% Aging Primary hypertroohy Restrictive CM Fibrosis
High output states
BAHA
Beriberi anemia hyperthyroid AV fistula
Pathophysio heart failure
Barorecepyors
Increased sympathetic
Increase renin –> AT2
Increase vasopressin
Dec RBF
Inc aldosterone
In water and Na reabsorption
Cardinal s and s of HF
Fatigue
Shortness of breath
Most impressive mech for dyspnea
Pulmo congestion accumulation of interstitial fluid
Junta capillary J receptors
Define orthopnea
What is pathophy
Dyspnea in recumbent position
Redistribution of fluid from splanchnic circ and lower extremities to central circ resulting in inc Pulmo capillary pressure
Define PND
Sob and coughing at night
1-3 h after patient retires
Diff from orthopnea: no relief sitting upright
Abdominojugular reflex
15 sec sustained in inc JVP 3 dm water
JVP exam of HF
Giant v waves due to tricuspid regurgitation
Pathophy s3 in HF
Volume overload
Dx in HF
ECG
Car
2d echo
ProBNP
Novel biomarkers in HF
ST2
Galectin 3
What is cor pulmonale
Altered Arab structure and/or function in the context of chronic lung disease
S/s in cor pulmonale
Dyspnea
PE in cor pulmonale
EXG findings
Carvallo’s sign of TR
ECG:
- p pulmonale
- RAD
- RV hypertroohy
MC cause of RHF
L HF
SENIORS study
Nebivolol on elderly has no benefit in all cause mortality
TOPCAT
Aldosterone antagonist therapy
Calcium sensitized thanprovide inotropic activity
Levosimendan
Selective myosin activator prolongs EF
Omecamtiv mecarbil
The only beta blockers with positive outcomes in HF
Carvedilol
Bisoprolol
Metoprolol
Changes that occur in the cross bridges in HF
Decreased expression: alpha myosin heavy chain
Increased expression: beta myosin heavy chain
What is afterload mismatch
Increase in wall thinning to match the increase in afterload created by LV dilation leads to functional afterload mismatch
What is cheyne stoke respiration associated with?
Low cardiac output
Mechanism: increased sensitivity of the respiratory center to arterial pco2
Apneic phase po2 falls pco2 rises