원저

삼출성 중이염에 대한 아산화질소의 영향

이상흠1,*, 김진홍1, 조승배1, 윤성희1, 심재현1, 이동명1
Sang Heum Lee1,*, Jin Hong Kim1, Sung Bae Cho1, Sung Hee Yun1, Jae Hyun Sim1, Dong Myung Lee1
Author Information & Copyright
1대동병원 이비인후과학교실
1Department of Otorhinolaryngology-Head & Neck Surgery, Daedong Hospital, Pusan, Korea
*교신저자: 이상흠, 607-011 부산광역시 동래구 명륜1동 530-1 대동병원 이비인후과학교실 전화: (051) 554-1233·전송: (051) 553-7575 E-mail: DDENT@chollian.net

© Copyright 1999 The Busan, Ulsan, Gyeoungnam Branch of Korean Society of Otolaryngology-Head and Neck Surgery. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Received: Feb 05, 1999; Accepted: Apr 09, 1999

Published Online: May 31, 2020

ABSTRACT

Background and Objectives: The nitrous oxide (N2O) is a widely used anesthetic gas and has been known to incr eases middle ear pressure during anesthesia. The positive pressure induced by the nitrous oxide may be sufficient to open the eustachian tube and to evacuate the fluid from the middle ear. In this study, we attempted to evaluate the influence of N2O on the patients with middle ear effusion. We assumed that N2O increased the middle ear pressure to evacuate the fluid from the middle ear. On the other hand, other anesthetic agents might not influence the middle ear pressure to evacuate the fluid from the middle ear cavity. Materials and Method: We reported 243 operated ears (175 patients) who underwent myringotomy and ventilation tube insertion from January 1995 to March 1998 in Daedong Hospital. We evaluated their type of anesthesia, impedance audiometry findings, microscopic findings of the tympanic membrane during surgery, concomitant nasal symptom, rate of recurrence. Results: The percentage of absence of fluid during surgery was higher in the group of anesthesia with N2O than that of without N2O. Patients who underwent anesthesia with N2O showed 31.1% disappearance rate of the fluid, whereas, patients without N2O anesthesia showed only 5.6% disappearance rate. The number of patients who had middle ear effusion with concomitant nasal symptoms were 125 patients. Patients who underwent anesthesia with N2O showed 38.5% disappearance rate of the fluid whereas, patients without N2O anesthesia showed only 5.0% disappearance rate. Conclusion: Anesthesia with nitrous oxide showed a great tendency of disappearance of middle ear effusion than without nitrous oxide. (J Clinical Otolaryngol 1999;10:36-40)

Keywords: 삼출성 중이염; 아산화질소; 임피던스 청력 검사 소견
Keywords: Middle ear effusion; Nitrous oxide; Impedance audiometry