AMA Category 1 Credit for Physicians Only.
ASRT CME is not available.
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The normal size of an ascending aorta depends upon the size and age of the patient. The following formulas have been used to calculate normal ascending aorta diameter:
This patient had a normal ascending aorta diameter. The relationship of the LVOT:SOV:STJ:AscAo can indicate the presence of aortic dilation (ie. Marfans) and can be used as a screening test. If the AVA;SOV diameter is less than 1.45 then aortic dilation is not present in patients up to 15 years old. Also, the ratios give an indication to the mechanism of AR if AR is present.
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A New On-Line Method for Predicting Aortic Root Dilatation during Two-Dimensional Echocardiography in Pediatric Patients with Marfan Syndrome Using the Sinus of Valsalva to Annulus Ratio
Echocardiographic assessment of aortic root dimensions in normal children based on measurement of a new ratio of aortic size independent of growth.
Aortic Root Diameter (Calculator)