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Atlas of Human Body Ultrasound Scanning_ Methods and Diagnostic Applications ( PDFDrive ).pdf
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6  Echocardiography

 

 

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2.24\ Subxiphoid Two-Atrium View

 

 

 

 

 

a1

 

 

a2

 

 

 

 

 

 

 

 

 

LL

 

 

 

 

 

 

 

 

RA

 

 

 

 

 

 

 

 

LA

Fig. 6.28  Subxiphoid two-atrium view

SVC

 

 

 

 

 

 

 

 

 

 

 

2.24.1\ Scanning Methods

The patient lies supine or on the left-anterior position. The transducer is placed in the subxiphoid (subcostal) area with some superior titling of the beam towards the head and the transducer being rotated 90° anticlockwise.

2.24.2\ Section Structure

The structures shown are the left atrium, right atrium, interatrial septum, and superior vena cava.

2.24.3\ Measuring Method and Normal Value

The diameters of left and right atrium measured at the atrial midlevel in systole are 38 ± 5 and 38 ± 6 mm, while the diameter of superior vena cava is 12 ± 3 mm.

2.24.4\ The Clinical Application Value

Abnormalities of interatrial septum, such as interatrial septal defect, could be diagnosed from this view.