• Arch. Dis. Child. Fetal Neonatal Ed. · Jan 2015

    A metronome for pacing manual ventilation in a neonatal resuscitation simulation.

    • Cecilia Cocucci, Matías Madorno, Adriana Aguilar, Leila Acha, Edgardo Szyld, and Gabriel Musante.
    • Department of Pediatrics and Maternal Health, Hospital Universitario Austral, Pilar, Argentina Fundación para la Salud Materno Infantil (FUNDASAMIN), Buenos Aires, Argentina.
    • Arch. Dis. Child. Fetal Neonatal Ed. 2015 Jan 1;100(1):F47-9.

    AimDuring manual positive pressure ventilation (PPV), delivering a recommended respiratory rate (RR) is operator dependent. We tested the efficacy of a metronome as a standardised method to improve the accuracy of delivered RR during manual PPV in a neonatal resuscitation simulation.MethodsWe conducted a blinded simulation in two consecutive stages. Using a self-inflating bag, 36 CPR trained operators provided PPV to a modified neonatal manikin via an endotracheal tube. Pressure and flow signals were captured by a respiratory function monitor. In the first standard stage, participants delivered RR as they would in delivery room. Prior to the second stage, they were asked about what their target RR had been and a metronome was set to that target. Subsequently, operators repeated PPV attempting to coordinate their delivered RR with the metronome. To evaluate accuracy we generated the variable RR Gap as the absolute difference between delivered and target RR. The primary outcome was the difference in RR Gap between stages.ResultsMean (SD) target RR was 50 (8.7) inflations/min. During the initial stage, median (IQR) RR Gap was 11.6 (4.7-18.3) inflations/min and 20/36 participants (55.5%) had a mean delivered RR beyond the recommended range. When paced by the metronome, RR Gap was reduced to 0.2 (0.1-0.4) inflations/min and 32/36 participants (89%) fell within the recommended range.ConclusionsThe use of a metronome improved the accuracy of delivered RR during manual PPV. Novel approaches to deliver an accurate RR during manual PPV need to be tested in more realistic scenarios.Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

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