Airway management is considered an essential element of both in-hospital and pre-hospital cardiopulmonary resuscita- tion for infants, with manual mask ventilation being a pri- mary and essential component of infant rescue airway management for medical professionals. 1 An essential con- sideration for infant mask ventilation safety is whether sufficient ventilation has been achieved or not. 1 Here, we conducted a survey on the subjective difficulty of evaluating the quality of mask ventilation by medical students, from various viewpoints.
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