Physical examination of a 6-year-old child reveals a heart murmur. An echocardiogram shows a ostium primum type of atrial septal defect. This defect results from failure of the A. ostium primum to form within the septum primum B. ostium secundum to form within the septum primum C. septum primum to fuse with the endocardial cushions D. septum primum to fuse with the septum secundum E. septum secundum to fuse with the endocardial cushions
Posted on: Fri, 17 Jan 2014 05:41:41 +0000
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