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  1. Heart failure - Symptoms and causes - Mayo Clinic

  2. Congestive Heart Failure: Symptoms, Stages & Treatment

  3. Heart Failure Signs and Symptoms

  4. Congestive Heart Failure: Causes, Symptoms, and Treatment …

  5. Ten Symptoms of Heart Failure Getting Worse - Healthline

  6. Heart failure - Diagnosis and treatment - Mayo Clinic

  7. Heart Failure - American Heart Association

  8. What is Heart Failure? - American Heart Association

  9. Managing Heart Failure Symptoms

  10. Heart Failure: Symptoms, Causes, and Types - Healthline