 |
|
Effects of Inhalant Anesthesia on the Middle Ear as Measured by Tympanometry
Kathleen Chinn, MS;
Orval E. Brown, MD;
Scott C. Manning, MD
Arch Otolaryngol Head Neck Surg. 1993;119(3):283-287.
Abstract
| |
• This investigation examined the effects of inhalant anesthesia, nitrous oxide and halothane, on middle ear pressure. Moreover, the effect of inhalant anesthesia on the validation procedure for tympanometry was examined. Tympanometry was used to measure middle ear pressure variations. Subjects were examined with tympanometry prior to and after the administration of inhalant anesthesia. Group 1 (N=86) received halothane and nitrous oxide. Group 2 (N=52) received halothane only. Group 1 data were gathered in a previous investigation. The investigation was continued with subjects in group 2. Results indicated that middle ear status prior to anesthesia was not significantly different from middle ear status under anesthesia. In addition, middle ear pressure changes due to nitrous oxide were not significantly different from middle ear pressure changes due to halothane alone. Moreover, there was no effect on the tympanometry validation procedure. These findings are consistent with previous studies that indicate nonsignificant changes in middle ear pressure associated with the use of nitrous oxide and halothane.
(Arch Otolaryngol Head Neck Surg. 1993;119:283-287)
Author Affiliations
From the Callier Center for Communication Disorders, The University of Texas at Dallas (Ms Chinn), and the Department of Otolaryngology, The University of Texas, Southwestern Medical Center (Drs Brown and Manning), Dallas.
Footnotes
Accepted for publication October 9, 1992.
Reprint requests to Department of Otolaryngology, Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75235 (Dr Brown).
 CiteULike  Connotea  Del.icio.us  Digg  Reddit  Technorati  Twitter
What's this?
|
