Transcatheter Heart Valve Replacement

stent. placement. the. narrowing. is. r. esolved ... The first step in closing an ASD is to measure the size of the defect with pictures taken inside the heart and with ultrasound images taken with a probe placed either down the throat (transesophageal echocardiogram in figure 8) or within the heart (intracardiac echocardiogram). ... ................
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