Simplified technique for tympanocentesis

Needle tympanocentesis is a useful technique for elucidating the etiology of otitis media. The Senturia ear specimen collector has been designed specifically for tympanocentesis, but this instrument requires additional equipment, plus a source of negative pressure. Other investigators have used an 18 to 20 gauge needle attached to a syringe in order to aspirate effusions behind the tympanic membrane. This technique requires that the operator directs the needle downward through the tympanic membrane while applying upward pressure to the syringe plunger. The authors have modified this technique so that double motion is no longer required; the operator can direct his attention toward perforating the tympanic membrane safely. The method is described in detail.