The first man to walk on the moon died on Saturday following complications that resulted from cardiovascular procedure.
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Armstrong underwent bypass surgery in Cincinnati on Aug. 7, two days after his birthday, the Daily RX reports. The procedure is usually performed to improve blood flow in blocked arteries.
While a bypass surgery cannot cure heart disease, it can help avert heart attack, as well as reduce heart disease symptoms, such as chest pain and shortness of breath. The most common complications that may arise in this kind of procedure include bleeding and irregularities in the heart beat, called arrhythmias.