Transposition of Great Arteries

Parasternal long axis view from a patient with transposition of the great arteries. Note the two great arteries are parallel and the pulmonary artery is positioned posterior to the aorta.

Fig 43

Mustard Procedure

Apical four chamber view in a patient withtransposition of the great arteries after a Mustard repair. Note the intra-atrial baffle (arrow) directing the pulmonary venous flow into the right side atrium. The right atrium and right ventricle are dilated.

RVLV

Fig 44

TGA post Mustard

Apical four chamber view in a patient withtransposition of great arteries after a Mustard repair. Note the intra-atrial baffle (arrow) directing the pulmonary venous flow into the right side atrium. The right atrium and right ventricle are dilated.

Colour Doppler mapping demonstrate mild tricuspid regurgitation

RA

RVLV

PV

Fig 45

A. Subcostal four chamber view demonstrating pulmonary venous pathway obstruction.B.Colour Doppler flow mapping showing velocity aliasing at the site of stenosis.C. Pulsed wave Doppler trace detecting high flow velocity.

TGA post Mustard repair

A B

C

mRV

mLV

Fig 46

TGA post Mustard repair

Apical four chamber view showing severe pulmonary venous pathway obstruction. Note The continuous flow detected at the site of stenosis.

mRV

mLV

Fig 47

Mustard TR

MRV

MRV

PV atrium

Apical four chamber view from a patient with a Mustard repair demonstrating a severely dilated pulmonary venous atrtium which may be the result of severe tricuspid regurgitation and/or impaired right ventricular function.

Colour flow map showing the tricuspid regurgitation.

Fig 48