Accuracy of echocardiography for assessing aortic root diameter

Area of Science:

• Cardiovascular Imaging
• Diagnostic Ultrasound
• Cardiac Anatomy

Background:

• Accurate aortic root diameter measurement is crucial for diagnosing and managing aortic diseases.
• Echocardiography is a noninvasive tool for assessing cardiac structures.
• Previous studies may have reported higher normal ranges for aortic root diameters.

Purpose of the Study:

• To determine the normal range of aortic root diameters in adults using echocardiography.
• To evaluate the accuracy of echocardiography in measuring aortic root diameters compared to intraoperative measurements in patients with aortic valve disease.

Main Methods:

• Echocardiographic continuous recording technique was used in 159 healthy adult subjects.
• Aortic root diameters were measured in normal subjects and compared between sexes.
• Echocardiographic measurements in 31 patients with aortic valve disease were compared to intraoperative aortic annulus diameters.

Main Results:

• The normal range for aortic root diameters was found to be 17 to 33 mm (mean 23.7 mm).
• Significant differences in aortic root diameters were observed between men (mean 25 mm) and women (mean 22.4 mm), independent of body surface area.
• Echocardiographic measurements correlated well with intraoperative aortic annulus diameters, with 80% of measurements within 2 mm.

Conclusions:

• The established normal range for aortic root diameters is lower than previously reported.
• Echocardiography is an accurate noninvasive method for assessing aortic root and annulus dimensions.
• These findings provide updated reference values for clinical practice and research.