10-21 Heart Failure_1

10-21 Heart - • Diuretics • RAAS inhibitors • Β-blockers(some • Dopamine and Dobutamine HF Treatment • Cardiac glycosides(digoxin •

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Click to edit Master subtitle style 2/16/11 Treatment of Heart Failure NURS 324 Fall 2010 Dr. Smith
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2/16/11 Heart Failure A failure of the ventricles to properly pump blood, usually develops in the left ventricle Reduced function of the LV causes reduced SV and ejection fraction Reduced cardiac output leads to inadequate tissue perfusion and volume
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2/16/11 HF Compensations Adaptive changes occur in the body due to reduced CO -ventricular dilation, hypertrophy -increased sympathetic tone -increased blood volume -natriuetic peptides These changes help temporarily maintain CO, but a vicious cycle develops
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2/16/11 HF Compensations
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2/16/11
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2/16/11 HF Manifestations All due to increased SNS tone and volume overload -increased BP, tachycardia -peripheral and pulmonary edema -fatigue, SOB -hepatomegaly -etc etc etc Depend on the severity of the LV
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2/16/11 HF Categories
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2/16/11 HF Treatment
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Unformatted text preview: • Diuretics • RAAS inhibitors • Β-blockers (some) • Dopamine and Dobutamine 2/16/11 HF Treatment • Cardiac glycosides (digoxin) • MOA: inhibits Na-K-ATPase, causing Ca accumulation in myocytes, thereby increasing myocardial contractility-also decreases some of the SNS activity • Reduces symptoms of HF but doesn’t increase life expectancy 2/16/11 Digoxin 2/16/11 Digoxin • Pharmacokinetic Administration/A Adverse Effects Dysrhythmias 2/16/11 Digoxin • Hemodynamic benefits: increased CO leads to decreased SNS tone, increased urine production, decreased renin production • Neurohormonal benefits: directly suppresses renin release, decreased SNS activity • Electrical effects: may cause dysrhythmias 2/16/11 Digoxin • Drug Interactions-diuretics-ACEIs and ARBs-dobutamine, dopamine-verapamil...
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This note was uploaded on 02/15/2011 for the course NURS 324 taught by Professor Smith during the Fall '10 term at South Carolina.

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10-21 Heart - • Diuretics • RAAS inhibitors • Β-blockers(some • Dopamine and Dobutamine HF Treatment • Cardiac glycosides(digoxin •

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