[Pulmonary hypertension in children treated with ventriculo-atrial shunt in hydrocephalus].

Four infants treated with ventriculo-atrial shunt for hydrocephalus developed sudden pulmonary hypertension, several years after the first operation. All infants died in spite of replacement of the distal shunt and AK treatment. At necropsy, old microemboli were found in the small lung vessels in two infants whereas the two other infants were suspected of having the same lesions from clinical investigations. The overall frequency for this complication was estimated to be 6.7% (95% CI 1.4-14.3%).