Neonatal resuscitation in resource-limited settings: Titrating oxygen delivery without an oxygen blender

Abstract

Objective To test whether 4 commonly used self-inflating bags with a reservoir in situ can reliably deliver different oxygen concentrations (21%-100%) using a portable oxygen cylinder with flows of ≤5 L/min. Study design Four self-inflating bags (from Laerdal, Ambu, Parker Healthcare, and Mayo Healthcare) were tested to provide positive pressure ventilation to a manikin at 60 inflations/min by 4 operators. Oxygen delivery was measured for 2 minutes, combining oxygen flows (0.25, 0.5, 1, 5 L/min) and peak inspiratory pressures (PIPs 20-25, 35-40 cmH;bsubesub&O). Results Combinations (n = 128) were performed twice. Oxygen delivery depended upon device, oxygen flow, and PIP. All self-inflating ..