Please choose the correct ending to complete the given sentence: Health: [header] How to ease sudden chest pain [title] Recognize the symptoms of a heart attack. [step] A heart attack occurs when the arteries that feed blood to your heart get clogged, blocking off blood flow. This damages the heart and causes the chest pain associated with a heart attack.

Ending1: In some cases, the blood gets knocked out of the arteries, leading to symptoms of coughing, shortness of breath, chest pain, or a permanent heart attack. [substeps] Excessive cough: the clots in your heart rupture and help the blood flow around your heart to shut the artery. Ending2: The chest pain experienced during a heart attack can be described as dull, achy, squeezing, tight, or like a heavy pressure. It focuses around the center of the chest. Ending3: This is a result of excessive blood flow to your heart. [substeps] Lumps and cysts in your heart often cause pain and tension in the arteries that draw blood. Ending4: The pain can last anywhere from hours to days and if its intensity becomes unbearable, you may need medical attention as soon as possible. Symptoms of a heart attack include : [substeps] Difficulty breathing chest tightness shortness of breath or chest tightness fatigue bone pain [title] Get prompt treatment.

Answer format: ending1/ending2/ending3/ending4