Experience with antisyphon devices: successes and complications.

Results of the use of antisyphon devices in 30 children are presented. Maintenance of a degree of ventricular dilatation was achieved in all 7 out of 10 cases when the device was implanted at the primary procedure and there was follow-up evidence of ventricular size. Sixteen of 20 children in whom the device was implanted for the slit ventricle syndrome became symptom free. However, seldom in this group did the ventricular system re-expand. Complications in each group are discussed.