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Heart Failure. William Chavey, MD, MS Associate Professor Department of Family Medicine University of Michigan. Heart Failure Terms. Heart failure (HF) may be divided into two categories --- preserved ejection fraction and reduced ejection fraction
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Heart Failure William Chavey, MD, MS Associate Professor Department of Family Medicine University of Michigan
Heart Failure Terms • Heart failure (HF) may be divided into two categories --- preserved ejection fraction and reduced ejection fraction • Systolic dysfunction (reduced ejection fraction) is defined by a reduced EF (< 40 - 45%), typically measured via echo, ventriculogram, radionuclide scan, or CT • Diastolic dysfunction is an echocardiographic finding representing poor filling. Heart failure with reduced ejection fraction is not necessarily the same as diastolic dysfunction and patients may have simultaneous systolic and diastolic heart failure
BNP • Prognosis • Diagnosis • Titration of therapy --- mixed results when compared to symptom management • Levels increased by age, female, renal insufficiency • Levels decreased by obesity
100 90 80 70 60 50 40 30 20 10 0 0 10 20 30 40 50 60 70 80 90 100 ROC Curves for BNP and ED Diagnosis Using All 250 Patients 82 118 205 Sensitivity (%) --- BNP --- ER diagnosis AUC 0.9790 0.884 1 - Specificity (%)
Treatment Recommendations for Heart Failure Patients with Left Ventricular Systolic Dysfunction
Heart Failure with Preserved EF • Few clinical trials • Diuresis in decompensated state • Rate reduction can improve diastolic filling • BP control important
Case 1 • 73 y/o male with h/o AF on verapamil, metoprolol, and warfarin; o/w healthy and active and travels the world performing • Presents with DOE • What is in differential diagnosis? • How would you work this up?
Case 1 points • Role of BNP in assessing etiology of symptoms • Management of systolic vs diastolic dysfunction
Case 1 points • Management of systolic vs diastolic dysfunction. If systolic dysfunction would:- d/c verapamil- add ACE
Case 2 • 50 y/o AA female with EF 20% and dyspnea at rest plus h/o AFib, CVA, Type II DM, RA plus other co-morbid conditions • What is the appropriate medical regimen for her? • Is she eligible for a device?
Case 2 • ACE inhibitor? • Beta blocker? • Diuretic? • Aldosterone antagonist? • ARB? • Vasodilators? • Dig?
Case 2 • ACE inhibitor? Yes • Beta blocker? Yes • Diuretic? Yes • Aldosterone antagonist? Yes • ARB? Probably not • Vasodilators? If tolerated by BP • Dig - probably