Drainage problems due to catheter malpositioning are acutely life-thre
atening in patients undergoing extracorporeal membrane oxygenation, In
order to reduce these complications we introduced sonographically gui
ded catheter positioning. We compare the outcome in a group of patient
s with blind cannula positioning to that in a group with sonographical
ly guided catheter positioning. Our results show that neonates and you
ng infants especially are at high risk of drainage problems due to cat
heter malposition and that their outcome could be markedly improved by
introducing sonographically guided cannula insertion.