We describe the progress of a girl aged 5 years, who suffered blunt trauma to the
chest producing a ventricular septal defect of 1 centimetre in diameter. The
shunt generated a mild dilation of the left-sided chambers, and exertional
dyspnoea. Three months later, therapeutic catheterisation revealed important
diminution in the extent of shunting. We decided, therefore, not to close the
defect, and she has since remained asymptomatic.