Hypothyroid Cardiomyopathy (Myxedema-Related Heart Failure)

• hypothyroid?

• show systolic and diastolic dysfunction?

• have heart failure?

• have left and right ventricular dilatation?

• have a cardiac arrhythmia (bradycardia, torsades de pointes, other)?

• have systemic hypotension (including cardiogenic shock)?

Has the heart disease improved after thyroxine replacement?

Is there another cause of cardiomyopathy that can explain the findings better?