A patient is admitted with symptoms of heart failure, and an echocardiogram reveals a dilated left ventricle with reduced ejection fraction. Which type of cardiomyopathy is this most consistent with, and what is the primary therapeutic approach?

Dilated cardiomyopathy is characterized by ventricular chamber enlargement, reduced systolic contractility, and decreased ejection fraction, leading to impaired forward cardiac output, neurohormonal activation (RAAS and sympathetic stimulation), and progressive heart failure with volume overload and elevated preload and afterload. Rationale: A. Hypertrophic cardiomyopathy involves myocardial hypertrophy and often outflow tract obstruction, not ventricular dilation with reduced ejection fraction. Beta-blockers may reduce contractility and obstruction, but the described echocardiographic findings do not match this condition. B. Restrictive cardiomyopathy is defined by diastolic dysfunction with stiff ventricles and preserved ejection fraction. Increasing fluid intake worsens volume overload and pulmonary congestion. This does not align with dilated ventricles and reduced systolic function. C. Dilated cardiomyopathy involves systolic failure with ventricular dilation and reduced ejection fraction. Treatment focuses on reducing preload and afterload using ACE inhibitors to improve cardiac output, reduce remodeling, and decrease neurohormonal activation. This is the correct match and management strategy. D. Takotsubo cardiomyopathy is typically stress-induced transient ventricular dysfunction, not a structural dilated ventricle with chronic reduced ejection fraction. It is managed supportively rather than with immediate surgery. Therefore, this option is incorrect.