Prognosis, Heart Failure

<p>Important risk factors for death include NYHA class IV symptoms, repeat hospitalizations, hyponatremia (serum sodium &#60;133 mEq/L [133 mmol/L]), worsening kidney function, higher doses of diuretics, intolerance of ACE inhibitors or β-blockers, and arrhythmias resulting in ICD firings.</p>