Many reasons: Coronary artery dz in multiple vessels may need open heart. Valve problems may need replacement or repair by open heart. Congenital heart defects would be another reason for open heart.
Answered 10/27/2011
6.3k views
Multiple reasons : The most common cause of heart disease resulting in cardiac surgery is either blocked coronary arteries or a problem with one of the heart valves.
Answered 1/2/2013
6k views
4 doctors weighed in across 2 answers
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