STEVE ALLEN / SCIENCE PHOTO LIBRARY STEVE ALLEN / SCIENCE PHOTO LIBRARY
Hole-in-the-heart surgery. Close-up view of open heart surgery showing a patch being sutured before being used to repair a hole in the heart (ventricular septal defect). This is a heart abnormality that develops before birth, forming a hole in the septum (partition) between the left and right sides of the heart. With a large hole, heart failure may develop soon after birth. Surgery is usually very effective.
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