The purpose of this study is to study whether neurally adjusted ventilatory assist (NAVA) provides advantages over current methods in detecting patients own breathing efforts in pediatric and neonatal ventilatory care.

Our study hypothesis is that NAVA-technology is more accurate than currently used methods in detecting and assisting spontaneous breathing in children, and thus the patient-ventilator synchrony will improve.

Asynchrony means that the timing of support given by the ventilator is different from patients own breathing pattern. Asynchrony during ventilatory care may increase the risk for complications, make the weaning more difficult and may affect the survival rates.

In this study we will compare two currently used methods pressure- and flow-triggering with a neurally adjusted ventilatory assist in synchronization of the ventilator support with patients own efforts.

Inclusion Criteria:

• All children born over 30 weeks of gestation needing ventilatory care

Exclusion Criteria:

• Craniofacial malformation which does not allow feeding tobe positioning. Critical ventilatory or perfusion problems.