Assessing the atrial septum

Ho et al, Mosby-Wolfe 1995

(secundum defect)

Fig 1

Secundum ASD

Apical four chamber view demonstrating a large secundum atrial septal defect

Fig 2

Subcostal four chamber view of same patientconfirming a left to right shunt at atrial level

Secundum ASD

3D image of secundum ASD and image during transcatheter occlusion

Fig 3

TOE secundum ASD

LA

RA

Transesophageal longitudinal view of the atria demonstrating an ostium secundum defect.

Colour flow image from the same view demonstrating left-to-right shunting across the ASD

Fig 4

Primum ASD

LARA

LV

RV

Apical four chamber view demonstratinga primum atrial septal defect

Colour Doppler flow image from same view illustrating left-to-right shunt across the primum

atrial septal defect

Fig 5

Parasternal short axis view demonstrating tri-leaflet left atrioventricular valve in a patientwith a primum atrium septal defect

Fig 6

Primum ASD

Subcostal four chamber view demonstrate an large primum atrialseptal defect which is located at the low part of normal atrial septum and the junction with atrioventricular valve.

LA

RA

RV

LV

Fig 7

Primum ASD repaired

Apical four chamber view of patient with aprimum ASD repair. Note the thickened left AV valve leaflet and markedly dilated left atrium

Colour Doppler flow mapping of the same patient demonstrating severe left AV valve regurgitation.

LV

LA

Fig 8

SVC type ASD

• Apical four chamber view showing a sinus venous defect of the superior vena caval type

Fig 9

SVC type ASD (TOE)

Transesophageal longitudinal view of the atria demonstrating a sinus venousus defect of the superior vena caval type.

SVC

LA

RA

Colour flow image from the same view demonstrating left-to-right shunting across the ASD

Fig 10

Sinus venousis ASD (SVC type)

Transesophageal longitudinal view of the atria demonstrating a sinus venosus defect of the superior vena caval type.

Fig 11