Neonatal volume guarantee ventilation: Effects of spontaneous breathing, triggered and untriggered inflations

Naomi McCallion, Rosalind Lau, Peter A Dargaville, Colin J Morley

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    Abstract

    BACKGROUND: During volume guarantee (VG) ventilation the peak inflating pressure (PIP) for each ventilator inflation is adjusted to ensure the expired tidal volume (V(Te)) is close to the set V(Te). Differences in the PIP between inflations triggered by the infant s inspirations and untriggered inflations are seen. AIM: To investigate the effects of triggered and untriggered inflations on PIP and V(Te). METHODS: Neonates were ventilated with the Dr-ger Babylog 8000 using assist control (synchronous intermittent positive pressure ventilation) and VG modes. Continuous recordings of ventilator pressures and tidal volumes were made at 200 Hz for 10 minutes. RESULTS: In 10 infants, 6540 inflations were analysed, of which 4052 (62 ) were triggered. Triggered inflations had a significantly lower mean (SD) PIP than untriggered inflations: 12.9 (4.9) vs 17.0 (3.3) cm H2O, (p
    Original languageEnglish
    Pages (from-to)1 - 4
    Number of pages4
    JournalArchives of Disease in Childhood: Fetal and Neonatal Edition
    Volume93
    Publication statusPublished - 2008

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