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ABSTRACT Patient triggered ventilation (PTV), the delivery of positive pressure inflation initiated only by the infant's respiratory efforts, has been assessed in 32 infants of
gestational age range of 24 to 36 weeks. A conventional newborn ventilator has been modified, such that in CPAP mode the manual breath control can be triggered by the infant's
respiratory efforts to deliver a single positive pressure inflation. The triggering sensor is a pneumotachograph placed between the endotracheal tube and the ventilator circuit, this detects
changes in flow and triggering occurs if the inspiratory flow exceeds 0.4 1/min. Inflation time during PTV mode was limited to 0.4 sec or less. Initially PTV was associated in the majority
of infants with improvements in oxygenation (p<0.01) when contrasted with conventional ventilation. PTV was maintained till final extubation in 20 infants without complications. One
infant only developed pneumothorax. In the remaining 11 infants, who tended to be less mature (p<0.01), PTV had to be discontinued after only a few hours. Predictors of failure of PTV at
1 hour were both a lack of improvement in oxygenation and a relatively slow triggering rate when related to gestational age. We conclude that PTV is a useful alternative for preterm
neonates, but at present its use should be restricted to those more mature than 28 weeks gestational age. ARTICLE PDF AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * King's College
Hospital, London, United Kingdom Anne Greenough & Michael Hird Authors * Anne Greenough View author publications You can also search for this author inPubMed Google Scholar * Michael
Hird View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Greenough, A.,
Hird, M. PATIENT TRIGGERED VENTILATION IN NEONATES. _Pediatr Res_ 26, 516 (1989). https://doi.org/10.1203/00006450-198911000-00104 Download citation * Issue Date: 01 November 1989 * DOI:
https://doi.org/10.1203/00006450-198911000-00104 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link Sorry, a shareable link is
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