• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1981년도 제15차 학술대회연제순서 및 초록
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• pp.37.1-37
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• 1981

30여년간의 역사를 가진 청력개선술이 우리나라에서 널리 시행되고 있으나 현재까지 중이성형술에 사용되는 재료나 수술방법의 선택에 대하여는 많은 의견차를 보이고 있으며 수술후 수술 성적 평가기준에도 상당한 의견차를 보이고 있다. 이에 본 저자들은 중이수술의 목적의 하나인 청력개선을 평가하기 위해 1980.1~1980 12 까지만 1년간 본 교실에서 시행한 청력개선술후의 청력상을 수술방법, 술자, 고막이식재료 및 이소골성형재료에 따라 그 결과를 비교검토하여 다음과 같은 성적을 얻었기에 보고하는 바이다. 1) 전 중이수술례는 306례였고 이중 청력개선을 고려했던 예는 181례로서 이를 수술별로 구분해 보면 Tympanoplasty type I은 107례 (59.1%), Columellization without Mastoidectomy는 35례 (19.3%), Columellization with Mastoidectomy는 39례(21.6%)였다. 2) 술후 청력검사 추시율은 Tympanoplasty type I이 41.1%, Columellization without Mastoiectomy가 45.7%, Columellization with Mastoidectomy가 64.1%였다. 3) 청력개선을 고려했던 181례중 Staff이 수술한 경우는 121례, Resident가 수술한 경우는 66례 였으며, 수술별로 보면 Tympanoplasty type I는 Staff이 60례, Resident가 47례, Columellization without Mastoidectomy는 Staffol 3l례, Resident가 4례, Columellization with Mastoidectomy는 Staff이 30례, Resident가 9례였다. 4) 술후청력검사가 추시된 예에서 술후 기골도 청력차가 20dB 이내인 경우는 Tympanoplasty type I이 89%, Columellization without Mastoidectomy는 50%, Columellization with Mastoidectomy 32%였다. 5) 술후 기골도 청력차가 20dB이내인 경우를 술자에 따라 비교해 보면 Staff 67%, Resident 59%였다. 6) 술후 기골도 청력차가 20dB이내인 경우를 고막이식재료 별로비교하면 연골 69%, 근막 63%였다. 7) 이소골 성형술을 실시했던 예중 술후 기골도청력차가 20dB 이내인 경우를 이소골 성형재료별로 비교해본 결과 연골 38%, 이소골 동종이식 36%, 이소골 자가이식은 43%였고, 수술시 이소골 상태에 따라 비교해본 결과 $M_{+}$ $S_{+}$가 61%, $M_{+}$ $S_{-}$는 33%, $M_{-}$$S_{+}$는 17%, $M_{-}$$S_{-}$는 22%였다.

• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1983년도 제17차 학술대회연제순서 및 초록
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• pp.19.2-19
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• 1983

만성중이염은 이비인후과의 가장 흔한 질환 중의 하나로 이에 대한 수술요법은 여러 가지 방법이 많이 발표되고 있으나 아직까지 어려운 점이 많이 있다고 하겠다. 저자들은 1981년 2월부터 1983년 2월 까지 부산성분도병원 이비인후과에서 만성중이염이란 진단하에 수술을 받은 환자 128예에 대해서 임상적 세균학적 관찰을 실시하여 다음과 같은 결론을 얻었다. 1) 성별과 연령비는 여자가 68예(53.1%), 남자가 60예 (46.9%), 또한 연령별로는 20대가 48예(37.5%), 10대가 37예(28.9%) 그리고 30대가 27예(21.1 %) 의 순서였다. 2) 환측별은 우측이 71예(55.5 %), 좌측이 57예(44.5 %) 이었다. 3) 수술전청력검사상 중등도의 손실이 64예 (50%)로 가장 많았고 다음으로 경도손실이 32예 (25 %)이었다. 4) 고막천공의 상태는 중심성천공이 65예(50.8%), 전결손이 44예 (34.4%), 이완부천공이 12예 (9.4%) 그리고 변연성천공이 7예 (5.4%)이었다. 5) 진주종이 전체의 36.7 %인 47예에서 나타났다. 6) 피부절개 및 수술경로는 postaural incision이 123예(96.1%) 이었다. 7) 국소마취가 95예(74.2 %) 이었다. 8) 수술방법은 intact canal wall tympanoplasty with mastoidectomy 가 53예 (41.4 %), tympanoplasty without mastoidectomy가 42예(32.8%) modified radical mastoidectomy 23예 (18%) 그리고 radical mastoidectomy가 10예(7.8%) 이었다. 9) Culture를 시행하여 분리된 균주 93종 중 proteus가 29종(31.2 %), staphylococcus가 27종(28.7%), pseudomonas가 22종(23.7%) 그리고 streptococcus가 7예(7.5%)이었다.

• 대한기관식도과학회:학술대회논문집
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• 대한기관식도과학회 1979년도 제13차 학술대회 연제순서 및 초록
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• pp.3.3-4
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• 1979

1968년도부터 전주 예수병원에서 intact canal wall tympanoplasty with mastoidectomy를 시행해 왔고 수술방법 및 결과에 대해서도 수회 발표한 바 있다. 수술후 청력증진을 도모하기 위한 이소골 재형술에 대해서도 수회 발표해 왔다. 그러나 여러가지 문제점이 많아 수술 방법을 여러가지로 개선 시도해 보았으며 이번에 1973년 1월부터 1979년 2월까지 153례중 추적 검사된 93례에 때하여 시행한 청력 증진술의 방법 및 결과에 대하여 종합 발표하는 바이다.

• 대한수의학회지
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• 제63권4호
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• pp.35.1-35.10
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• 2023

Non-human primate (NHP) research faces challenges due to zoonosis risk and complex veterinary management yet lacks standardized guidelines for animal care. Therefore, we developed an advanced veterinary management protocol for NHP quarantine, anesthesia, and postoperative care. Three female 4 to 5-year-old cynomolgus monkeys were anesthetized and underwent various tests, including body weight, temperature, blood tests, urinalysis, microbiological monitoring, and physical and dental examinations. Ivermectin and medicated baths were administered to eradicate ectoparasites and endoparasites, and testing was repeated 30 days later. Following quarantine, we performed computed tomography and anesthesia maintenance for mastoidectomy. To relieve pain and maintain body weight, we administered tramadol intramuscularly 4 times/day for 3 days and meloxicam subcutaneously twice daily for 14 days. Feed replacements were provided. During the 33-day quarantine period, physical examinations revealed no abnormalities indicative of infectious diseases, and no specific clinical symptoms were observed. Through a preliminary test of anesthesia time, we selected ketamine 4 mg/kg + medetomidine 50 ㎍/kg for short experiments such as computed tomography, and ketamine 8 mg/kg + medetomidine 50 ㎍/kg for intubation. Ten days after mastoidectomy, NHPs consumed 100 kcal/kg and recovered their body weight. This study offers advanced veterinary management guideline for NHP research. Such protocols can lead to more standardized and ethical practices in NHP research, thereby enhancing the quality of studies on NHPs and the translation of findings to human health and disease.

• Journal of Audiology & Otology
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• 제25권2호
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• pp.104-109
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• 2021

Background and Objectives: To assess whether the audiological and clinical outcomes of type 0 tympanoplasty (T0) performed using cartilage were comparable with those of ossiculoplasty in patients who underwent canal wall down mastoidectomy (CWDM). Subjects and Methods: This study included patients who had chronic otitis media with cholesteatoma and underwent CWDM with ossiculoplasty involving partial ossicular replacement prosthesis (PORP), total ossicular replacement prosthesis (TORP), or T0. Anatomical success rates and hearing outcomes were analyzed. Results: Seventy-two patients were included in this study; 29 of them underwent CWDM with T0, 27 underwent CWDM with PORP, while 16 underwent CWDM with TORP. The difference in mean improvement in the air-bone gap (ABG) between the groups was not significant. The differences in the rates of ABG closure to ≤10 dB HL (p=0.030) and ≤20 dB HL (p=0.029) were significant. There were significant differences in improvements in the ABG at 3 kHz among the PORP, TORP, and T0 groups. Conclusions: The audiological outcomes of CWDM with ossiculoplasty seemed to be better than those of CWDM with T0 with no significant difference in the incidence of complications following ossiculoplasty and T0.

• 대한청각학회지
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• 제25권2호
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• pp.104-109
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• 2021

Background and Objectives: To assess whether the audiological and clinical outcomes of type 0 tympanoplasty (T0) performed using cartilage were comparable with those of ossiculoplasty in patients who underwent canal wall down mastoidectomy (CWDM). Subjects and Methods: This study included patients who had chronic otitis media with cholesteatoma and underwent CWDM with ossiculoplasty involving partial ossicular replacement prosthesis (PORP), total ossicular replacement prosthesis (TORP), or T0. Anatomical success rates and hearing outcomes were analyzed. Results: Seventy-two patients were included in this study; 29 of them underwent CWDM with T0, 27 underwent CWDM with PORP, while 16 underwent CWDM with TORP. The difference in mean improvement in the air-bone gap (ABG) between the groups was not significant. The differences in the rates of ABG closure to ≤10 dB HL (p=0.030) and ≤20 dB HL (p=0.029) were significant. There were significant differences in improvements in the ABG at 3 kHz among the PORP, TORP, and T0 groups. Conclusions: The audiological outcomes of CWDM with ossiculoplasty seemed to be better than those of CWDM with T0 with no significant difference in the incidence of complications following ossiculoplasty and T0.

• Journal of Audiology & Otology
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• 제25권4호
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• pp.224-229
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• 2021

Background and Objectives: The United Kingdom (UK) national standard for the closure rate for myringoplasty is 89.5% (90.6% and 84.2% for primary and revision surgeries, respectively). The average hearing gains for primary and revision myringoplasty are 9.14 dB and 7.86 dB, respectively. This study compared the myringoplasty outcomes for a single surgeon over 5 years. Subjects and Methods: Data for 68 cases were analyzed retrospectively. The outcome measures were achievement of the tympanic membrane closure and the average hearing gain or loss. Results: The overall and primary closure rates were 97% and 98%, respectively and significantly higher than the UK national standard (p=0.0210 and p=0.0287, respectively). The revision closure rate was 93%; however, it was not significantly higher than the national standard (p=0.1872). The average hearing gain was 5.18 dB. The gains for primary and revision surgeries were 5.15 dB and 5.25 dB, respectively. Conclusions: We propose that these outcomes are a result of our surgical technique, including the simultaneous use of cortical mastoidectomy in ears with discharge.

• 대한청각학회지
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• 제25권4호
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• pp.224-229
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• 2021

Background and Objectives: The United Kingdom (UK) national standard for the closure rate for myringoplasty is 89.5% (90.6% and 84.2% for primary and revision surgeries, respectively). The average hearing gains for primary and revision myringoplasty are 9.14 dB and 7.86 dB, respectively. This study compared the myringoplasty outcomes for a single surgeon over 5 years. Subjects and Methods: Data for 68 cases were analyzed retrospectively. The outcome measures were achievement of the tympanic membrane closure and the average hearing gain or loss. Results: The overall and primary closure rates were 97% and 98%, respectively and significantly higher than the UK national standard (p=0.0210 and p=0.0287, respectively). The revision closure rate was 93%; however, it was not significantly higher than the national standard (p=0.1872). The average hearing gain was 5.18 dB. The gains for primary and revision surgeries were 5.15 dB and 5.25 dB, respectively. Conclusions: We propose that these outcomes are a result of our surgical technique, including the simultaneous use of cortical mastoidectomy in ears with discharge.

• 대한청각학회지
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• 제24권4호
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• pp.204-209
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• 2020

Background and Objectives: Hearing loss (HL) and its repercussions are major problems in today's society. There are limited data on the relationship between degree of HL and otologic disorders. The aim of this study is to estimate mortality rates, rates of sudden idiopathic HL and related otologic surgical procedures in hearing disability patients in South Korea. Subjects and Methods: Retrospective medical data for 160,205 patients with hearing disability was extracted. Mortality rates, rates of sudden idiopathic HL and related otologic surgical procedures were compared with a normal control group consisting of 865,475 people; approximately 5 times the number of hearing disability patients. Results: According to the Korean National Disability Registry (NDR), 0.458% of the population in South Korea suffered from hearing disability in 2015. Higher rates of mortality and sudden idiopathic HL were reported in hearing disability patients, increasing up to a maximum of 1.594 times and 1,039.695 times, respectively, compared to the normal control group. Mastoidectomy surgery was 2.5 times more frequently performed and pressure equalizing (PE) tube insertion was about 15 times more frequently performed in hearing disability patients. Conclusions: Hearing disability is related to higher risks of mortality, sudden idiopathic HL and otologic surgical procedures, including mastoidectomy and PE tubing.

• Journal of Audiology & Otology
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• 제24권4호
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• pp.204-209
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• 2020

Background and Objectives: Hearing loss (HL) and its repercussions are major problems in today's society. There are limited data on the relationship between degree of HL and otologic disorders. The aim of this study is to estimate mortality rates, rates of sudden idiopathic HL and related otologic surgical procedures in hearing disability patients in South Korea. Subjects and Methods: Retrospective medical data for 160,205 patients with hearing disability was extracted. Mortality rates, rates of sudden idiopathic HL and related otologic surgical procedures were compared with a normal control group consisting of 865,475 people; approximately 5 times the number of hearing disability patients. Results: According to the Korean National Disability Registry (NDR), 0.458% of the population in South Korea suffered from hearing disability in 2015. Higher rates of mortality and sudden idiopathic HL were reported in hearing disability patients, increasing up to a maximum of 1.594 times and 1,039.695 times, respectively, compared to the normal control group. Mastoidectomy surgery was 2.5 times more frequently performed and pressure equalizing (PE) tube insertion was about 15 times more frequently performed in hearing disability patients. Conclusions: Hearing disability is related to higher risks of mortality, sudden idiopathic HL and otologic surgical procedures, including mastoidectomy and PE tubing.