title: Tympanostomy tube insertion: anterosuperior vs. anteroinferior quadrant.
abstract: We studied the extrusion rate of Paparella type I tympanostomy tubes in the anterosuperior quadrant compared to those placed in the anteroinferior quadrant in a prospective study. Thirty-five patients were evaluated. The duration (mean +/- SEM) in the anteroinferior quadrant was 211 +/- 18 days, whereas the duration in the anterosuperior quadrant was 211 +/- 11 days. We conclude that placement in the anterosuperior quadrant does not prolong duration of these tympanostomy tubes.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Johns Hopkins University School of Medicine, Baltimore, MD.
authors.forename: M M
authors.initials: MM
authors.lastname: April
authors.forename: R R
authors.initials: RR
authors.lastname: Portella
authors.forename: P W
authors.initials: PW
authors.lastname: Orobello
authors.forename: R M
authors.initials: RM
authors.lastname: Naclerio
mesh_terms: D000208:Acute Disease; D002648:Child; D002908:Chronic Disease; D006801:Humans; D008876:Middle Ear Ventilation / Q000379:methods*; D010033:Otitis Media / Q000601:surgery; D010034:Otitis Media with Effusion / Q000601:surgery; D011446:Prospective Studies; D012008:Recurrence; D014432:Tympanic Membrane / Q000502:physiology