Tympanic injury secondary to positive pressure mask ventilation is rare. During resuscitative procedures, two patients developed partial deafness, one from disarticulation of the incudomalleal joint, the other from an oval window perilymph fistula.
Excessive pressure transmitted rapidly through the eustachian tube is postulated to have caused both injuries.
Friedman SI, Sasaki CT. Hearing Loss During Resuscitation. Arch Otolaryngol. 1975;101(6):385–386. doi:10.1001/archotol.1975.00780350049012
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