In this section
In this complex malformation the ventricles are on the opposite
side of the heart to the usual. The atriums are connected to the
incorrect ventricles and the great arteries also come from the
wrong ventricles (Transposition). Despite these problems, blood
from the lungs passes to the aorta, so the child is not blue. In
individuals who have no other heart defects the heart may function
well enough for the affected person to survive to adult life
In many cases an associated VSD is present (as shown in
the illustration). This allows excessive blood flow and pressure in
the lung circulation. Other heart defects are commonly present (eg
valve abnormalities, coarctation, pulmonary stenosis). Many
patients develop 'Heart Block', which
may necessitate a pacemaker.
A related abnormality is "Double
Inlet Left Ventricle" (DILV).