Please choose the correct ending to complete the given sentence: Health: [header] How to prevent congestive heart failure [title] Recognize the symptoms of heart failure. [step] Heart failure does not actually mean your heart is failing or about to stop working. It means your heart muscle has weakened over time and cannot receive or pump blood as well as it used to.

Ending1: This can lead to congestion or a backup of blood in the heart. As a result, not enough oxygen-rich blood will be pumped to your body's other organs. Ending2: You may experience headaches, dizziness, rapid heartbeat, fatigue, and numerous other symptoms. Failure to pump blood is usually accompanied by : [substeps] Uncontrolled heart failure. Ending3: Heart failure causes your heart to function wrong and your body cannot efficiently pump fluids. An irregular heartbeat can also be an indication of heart failure : [substeps] Irregular heartbeat (irregularity). Ending4: You may experience chest pain and difficulty breathing. [substeps] Watch for unusual chest pain during menstruation.

Answer format: ending1/ending2/ending3/ending4