Diagnostik der isolierten Tracheoösophagealfistel durch Manometrie der Speiseröhre

described. It consists of pull-through registration ofintraluminal pressures. An abrupt pressure rise in the area of the fistula during inspiration is pathological. In principle, this method consists of the graphi cal tracing of the original Koops test which we have slightly modified. The investigation is non-invasive and accurate in comparison with roentgenological and/or endoscopical meth ods.