Routine of infection Via eustachian tube upper respiratory infection acute rhinonitis and nasal pharyngitis, Upper respiratory communicative disease (diaphea, meals, et al Swimming and dive in unclear water Anatomic contribution (Eustachian tube in infant is wide and short and the two orifice in the same level) 1. Eardrum rcutar canals B Vestibular nerve Note Eustachian tube
Routine of infection ◼ Via eustachian tube ◼ upper respiratory infection (acute rhinonitis and nasal pharyngitis) ◼ Upper respiratory communicative disease (diaphea, mealse, et al) ◼ Swimming and dive in unclear water ◼ Anatomic contribution (Eustachian tube in infant is wide and short and the two orifice in the same level)
Routine of infection Via external acoustic canal and Tm Perforation Myringotomy or myrigotosis Via blood supply 1. Eardrum rcutar canals B Vestibular nerve Note Eustachian tube
Routine of infection ◼ Via external acoustic canal and TM ◼ Perforation ◼ Myringotomy or myrigotosis ◼ Via blood supply
Pathology Mucosal inflammation Serous, hemorrhagic or purulent exudate in middle cavity Rupture of tympanic membrane
Pathology ◼ Mucosal inflammation ◼ Serous, hemorrhagic, or purulent exudate in middle cavity ◼ Rupture of tympanic membrane
Symptoms Fever It may be masked by analgesics or antibiotic otalgia u% patients can spontaneous remission Fullness Hearing loss a ncus
Symptoms ◼ Fever ◼ It may be masked by analgesics or antibiotic ◼ Otalgia ◼ 60% patients can spontaneous remission ◼ Fullness ◼ Hearing loss