Truncus arteriosus (fetal echocardiogram)

Case contributed by Cathy Cluver

Presentation

Tertiary review for fetal cardiac assessment

Patient Data

Age: Second trimester
Gender: Female

Four chamber view

ultrasound

The four chamber view shows left axis deviation.

LVOT/5CV

ultrasound

Fetal echocardiography of truncus arteriosus on the 5 chamber view. The 1st truncal branch is clearly seen coming off posterior to the large trunk.

RVOT/3vv and 3vt

ultrasound

A single large trunk is seen to be giving rise to the pulmonary arteries and aorta.

Case Discussion

In truncus arteriosus, a single common artery arises from the heart and supplies coronary, pulmonary and systemic circulation. This case demonstrates the typical findings of truncus arteriosus on standard fetal echo views.

Images courtesy of Dr Simon Meagher

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