Which statement best describes when ICD therapy should be considered in heart failure?

Which statement best describes when ICD therapy should be considered in heart failure?

• A. EF ≤ 35% with persistent symptoms despite optimal therapy.
• B. EF ≥ 50% with no symptoms.
• C. EF between 40% and 45% with symptoms only during exertion.
• D. ICD is never indicated in heart failure.

Answer: (C)