중이 수술후 청력 변화에 대한 임상적 고찰

홍석찬,강성호,이광희 건국대학교 의과학연구소 1994 건국의과학학술지 Vol.4 No.-

statistical analysis of bone conduction loss in chronic otitis media has not been exactly reported until now. Authors studied the relationship between the preoperative bone conduction hearing level and age, nature of middle ear and temporal bone pathology, pneumatization of mastoid in 97 ears of chronic uppurative otitis media performed middle ear surgery at Konkuk University Hospital from March 1992 to December 1992. The results were as following: The mean bone conduction threshold was 16.2±12.4dB. In the cases of ossicular defect, bone conduction loss was greater in total destruction than in partial destruction with statistical significance. Among ossicular defect, incus destruction group showed more bone conduction loss than intact incus group with statistical significance. There was no difference of bone conduction loss according to pathologic findings in middle ear cavity and mastoid antrum, but pathologic groups showed more bone conduction loss than control group with normal temporal bone pneumatization with statistical significance. Comparing pneumatization of mastoid antrum and mastoid process, there was statistically significant bone conduction loss in orders of pneumatic type, diploic type, sclerotic type, cholesteatoma cavity. There was no difference of bone conduction hearing level according to age, sex, and duration of disease process with statistical significance. The results suggest that the bone conduction threshold in chronic otitis media is influenced by artificial elevation due to conductive defect and can be improved by reconstructive surgery.Many patients being followed for chronic suppuration of the middle ear were observed to have sensorineural or mixed type hearing loss. The major cause of this bone conduction loss might be secondary to cochlear biochemical changes occuring through the round window membrane. But, clinical and statistical analysis of bone conduction loss in chronic otitis media has not been exactly reported until now. Authors studied the relationship between the preoperative bone conduction hearing level and age, nature of middle ear and temporal bone pathology, pneumatization of mastoid in 97 ears of chronic suppurative otitis media performed middle ear surgery at Konkuk University Hospital from March 1992 to December 1992. The results were as following: The mean bone conduction threshold was 16.2±12.4dB. Inthe cases of ossicular defect, bone conduction loss was greater in total destruction than in partial destruction with statistical significance. Among ossicular defect, incus destruction group showed more bone conduction loss than intact incus group with statistical significance. There was no difference of bone conduction loss according to pathologic findings in middle ear cavity and mastoid antrum, but pathologic groups showed more bone conduction loss than control group with normal temporal bone pneumatization with statistical significance. Comparing pneumatization of mastoid antrum and mastoid process, there was statistically significant bone conduction loss in orders of pneumatic type, diploic type, sclerotic type, cholesteatoma cavity. There was no difference of bone conduction hearing level according to age, sex, and duration of disease process with statistical significance. The results suggest that the bone conduction threshold in chronic otitis media is influenced by artificial elevation due to conductive defect and can be improved by reconstructive surgery.

환자의 마취전후 병력 또는 불편요서의 현황(2)

강태훈,양홍석,김진윤,최병권,조형상 중앙대부설한국의과학연구소 1990 한국의과학 Vol.22 No.4

초임계 이산화탄소를 이용하는 친환경 공정에 의한 다공성 고분자의 제조

강세란,홍성수,이민규,이석희,천재기,주창식 한국환경과학회 2004 한국환경과학회지 Vol.13 No.3

An experimental study on the preparation of monolithic porous polymers by environmentally friend process in supercritical carbon dioxide has been carried out. Polymerization mixture composed of a cross-linking monomer, initiator and functional co-polymer was charged in the reactor with sapphire window. After the system was purged with a flow of CO₂ for 15 min, the reactor was pressurized with liquid CO₂ up to 100 bars. The reactor was isolated from and placed back to the system via quick connector for shaking until the mixture had become fully homogeneous. The reactor was then heated and pressurized to the required reaction conditions and left overnight. After cooling and CO₂ evacuation, the polymer was removed from the reactor as dry, white, continuous monoliths. The effect of experimental conditions on the physical properties of porous polymer was systematically examined, and it was found that monomer content had a major effect on the physical properties of the polymers.

코골음 및 무호흡증 환자에서 구개인두 성형술의 효과

강성호,홍석찬,이광희 건국대학교 의과학연구소 1995 건국의과학학술지 Vol.5 No.-

코골음 및 수면 무호흡증은 비중격 만곡, 편도비대, 비인강 협착 및 인두내 종물, 늘어진 구개 수나 연구개, 거대설, 후두낭종 등에 의한 해부학적 이상 소견으로 상기도 폐쇄를 일으켜서 나타 나는 것으로서 구개인두 성형술을 시행함으로써 상기도 폐쇄로 인해 생길 수 있는 합병증의 발생을 예방함과 동시에 코골음과 수면 무호흡증을 치료하는 데 기여할 것으로 사료된다. Sleep disorders as new disease entities continue to increase clinical experiences and increase their significance. Obstructive Sleep apnea syndrome is a disorder characterizd by subjective symptoms including daytime hypersomnolence, headache, altered mention, and snoring. Objective measurement using polysomnography documents episodes of apnea and desaturation level that provides more important information. In this study, we analyzed the changes of snoring and sleep apnea after uvulopalatopharyngoplasty. Postoperatively, snoring was shown to have been cured or improved in 92% of cases, while sleep apnea was improved in 69% of cases. This means that uvulopalatopharyngoplasty is mandatory to relieve the upper airway obstruction caused by anatomical abnormalities.

한국형 후각검사 KVSS Test의 개발

홍석찬,유영석,김은서,김석천,박수홍,김진국,강성호 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.7

진공용 나노스테이지 개발

홍원표,강은구,이석우,최헌종 한국공작기계학회 2004 한국공작기계학회 춘계학술대회논문집 Vol.2004 No.-

Miniaturization is the central theme in modem fabrication technology. Many of the components used in modern products are becoming smaller and smaller. The direct write FIB technology has several advantages over contemporary micromachining technology, including better feature resolution with low lateral scattering and capability of maskless fabrication. Therefore, the application of focused ion beam(FIB) technology in micro fabricaton has beome increasingly popular. In recent model of FIB, however the feeding system has been a very coarse resolution of about a few μm. It is not unsuitable to the sputtering and the deposition to make the high-precision structure in micro or macro scale. Our research is the development of nano stage of 200mm strokes and 10nm resolutions. Also, this stage should be effectively operating in ultra high vacuum of about 1×10^(-5)pa. This paper presents the concept of nano stages and the discussion of the material treatment for ultra high vacuum.

3차원적 측두골 전산화 단층촬영을 이용한 중이질환에 대한 임상적 고찰

강성호,김진국,홍석찬 건국대학교 의과학연구소 1997 건국의과학학술지 Vol.7 No.-

Study of the complex anatomy and pathology of the temporal bone has traditionally used permitted analysis in only two dimensional computed tomography. Recent technological advances in clinical application of computed tomography have made 3-dimensional reconstruction from consecutive axial tomography possible. This new method improves the assessment and therapy of patients undergoing surgical procedures for disease involving temporal bone. Three dimensional computed tomography was performed in 20 patients, involved the middle ear and temporal bone. 5 examples are demonstrated here and we concluded that this new method improves the display of the location and state of pathology and affords accurate therapeutic and surgical planning.

수술실 간호사의 스트레스와 관련된 요인 분석

홍복화,강복수,김석범 韓國保健敎育學會 1996 보건교육건강증진학회지 Vol.13 No.1

To measure the degree of work stress and identify factors influencing the stress among OR nurses, a study was implemented for 131 OR nurses working at four university hospitals in Taegu city through self administered questionnaires. Mean score of total work stress of nurses was 3.71, when maximum score was 5. Relatively high degrees of work stress was evident among OR nurses. When the related factors of the stress specified in the questionnaire were grouped into 11 categories, the repondents turned out to feel the highest stress when they were faced with the categories of non-peculiar duty and personal conflict with doctors. The most stressful events were nursing malpractice during surgical operations and damage to OR equipments. The nurses more susceptible to workstress were married with one child, less educated and worked at OR for 3 to 6 years.

Phosphamidon 분해세균의 분리동정 및 생분해능

강양미,허성남,안태석,송홍규 江原大學校 附設 環境硏究所 1999 環境硏究 Vol.16 No.-

토양으로부터 유기인계 살충제인 phosphamidon을 분해하는 세균들을 분리하고 Biolog system을 이용하여 동정하였다. 그람양성 세균들은 모두 Bacillus 속에 속하는 종들이었으며 그람음성 세균들은 토양에서 우점하지 않는 세균들이 많았다. 이들중 phosphamidon 함유배지에서 생장률이 높은 균주들을 선택하여 phosphamidon 분해능을 조사한 결과 Capnocytophaga gingivalis로 동정된 YD-17 균주가 가장 높은 생분해능을 나타내어 1000 ppm의 phosphamidon이 배양 21일 후 9.4%의 잔류량을 보였으며 이는 대조구에 비해 제거율이 52% 증가된 결과였다. 이 때 균주의 생장을 단백질량으로 측정하였는데 분해균주들이 고농도의 phosphamidon에 의해 저해되지 않고 지속적인 생장을 하여 phosphamidon을 탄소원으로 이용하는 생분해가 일어난 것을 확인할 수 있었다. Organphosphorus insecticide phosphamidon-degrading bacteria were isolated from agricultural soils and identified using Biolog microtiter assay. All Gram-ositive degrading bacterial strains belong to genus Bacillus and many Gram-negative bacteria were rare soil species. Among them fast growing strains on phospamidon-containing minimal medium were selected and their biodegrading capability were measured. YD-17 which was identified as Capnocytophaga gingivalis showed the highest biodegradation rate. It could increase the removal of phosphamidon up to 52%. During the biodegradation continuous increase of amount of cell protein was observed, which, indicated that phosphamidon was utilized as a carbon source for phosphamidon-degrading bacteria.

KAL기 추락에 의한 대량재해의 개인식별

강신몽,이원태,고영창,최상규,김윤희,이홍석,서재관,윤중진,이혜경,최득린,김종열,윤창육,변명식,이장홍 大韓法醫學會 1991 대한법의학회지 Vol.15 No.2

Individual identification is an important part in medicolegal field especially in mass disaster. At July, 27, 1989, KAL KE-803 was crashed on landing at Tripoli International Airport, Liba. The plane was caught in fire and sixty eight Koreans were sacrified. The majority of victims were severely charred and injured. The authors examed all dead bodies and successfully identified all the cases through visual, anthropological, odontological, radiological and pathological methods including fingerprint and blood typing.