CHF Fact Sheet.docx - CHF Pathophysiology o Characterized by the inability of the heart to adequately deliver oxygen o Systolic dysfunction impaired

CHF Fact Sheet.docx - CHF Pathophysiology o Characterized...

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CHF Pathophysiology : o Characterized by: the inability of the heart to adequately deliver oxygen o Systolic dysfunction: impaired ventricular contraction o Diastolic dysfunction: increased resistance to the filling of one/both ventricles, elevated diastolic pressure in the ventricles, and reduced ventricular compliance o Central hemodynamic changes: Decreased cardiac output Elevated LV filling pressures Compensatory ventricular volume overload Elevated pulmonary and central venous pressures o Signs/Symptoms: fatigue, dyspnea, reduced exercise tolerance Management/Medications: o Initially: o Management involves identifying the underlying cause o Medications: Excessive salt and water retention is a hallmark of CHF, so most patients require diuretics to improve symptoms Arterial vasodilators: reduce LV end diastolic pressures and improve cardiac output
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Exercise Response: o Concerns with exercise: o Reduction in cardiac output relative to the
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