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A real-time ventilation feedback device: (A) system overview; (B) real-time ventilation feedback device (RTVFD)—a: tidal volume, b: inspiration time, counted time right before bagging (seconds to next bagging), residual battery, c: peak pressure; (C) paediatric bag valve mask used for manikin simulation; (D) schematic diagram of RTVFD setting. RTVFD, real-time ventilation feedback device.
