Capnography in Neonates Ventilated With High Frequency Ventilation: Prospective, Observational Multi-Center Study

* This will be an observational study. Respiratory data will be recorded using Capnostream20p. There will be no use in the recorded data for the medical care of the patients. Other clinical data will be captured in the CRF. Similar study is currently conducted in Bnai Zion MC since 2008. Thirty four (34) patients have been recruited without any adverse events. * During the study the medical team will capture in the CRF the following: Blood gas and distal capnography values at time of sampling, ventilator settings at time of sampling. * Changes made in the ventilation parameters, blood gas time and results, concomitant treatment (e.g. suction) and concomitant medication (respiratory related e.g. surfactant), vital signs all these will be retrieved from the patient\'s medical charts.