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김양재,박홍석,최장원,김영중,구수권 대한이비인후과학회 부산,울산,경남 지부회 2012 임상이비인후과 Vol.23 No.1
With patients increasingly interested in snoring and sleep apnea, sleep-disordered breathing (SDB) patients are frequently encountered in the otolarygologic office. Tonsillectomy is one of the frequently used technique, among surgical procedure of SDB. Retrospective analysis was done about patients who underwent tonsilletomy to find change of incidence in tonsillectomy as a treatment of SDB. Materials and Methods:From January 1998 to December 1999, retrospective chart analysis of indication of tonsillcetomy was done about 2 groups divided by age under fifteen and over sixteen. Same chart review was done from January 2007 to December 2008. Indication of tonsillectomy was divided as infection group, SDB group and mixed group. Results:Under age of fifteen, From January 1998 to December 1999, tonsillectomy indication were mixed group, infection group and SDB group, in the order of frequency. From January 2007 to December 2008, the order had changed as mixed group, SDB group and infection group. There was no statistical significance these change. In other hands, At that time, SDB group had been incresed from 28.3% to 59.5% in adult male group. (p=0.002) Conclusion:Proportion of tonsillecetomy as a treatment of SDB has beeen increased in male adult. Recently, frequency of tonsillectomy realated with SDB has been incresed. Surgical treatment of tonsil is considered as an active solution of SDB. 9년 동안 15세 이하의 소아의 경우, 편도 적출술의 적응증은 남녀 모두 감염과 수면호흡장애가 함께 적응증이 되는 비율이 가장 높았으며 두시기간 유의한 차이는 없었다. 성인의 경우, 특히 남성에서 수면호흡장애의 치료로써 편도 적출술을 시행 받는 비율이 유의하게 증가했음을 알 수있었다. 전세계적으로 비만인구가 증가하는 추세인 요즘 수면호흡질환의 진단과 치료의 중요성이 날로 증가하고 있다. 본연구의 결과 또한 이러한 실상을 잘 반영하고 있으며, 향후 편도질환의 수술적 치료가 수면호흡장애의 적극적인 치료의 한 부분으로 활용되어야 할 것으로 사료된다.
만성 부비동염 환자에서 폐색을 유발한 함기화된 구상돌기 1예
김양재,김영중,김영준,구수권 대한이비인후과학회 부산,울산,경남 지부회 2013 임상이비인후과 Vol.24 No.2
Pneumatization is common variant of the paranasal structures, especially on intranasal turbinate. Pnematized uncinate process is very rare condition and can cause nasal obstruction with underlying nasal pathology. A 11-year-old man presented with nasal obstruction. Computed tomography confirmed chronic pansinusitis with polyposis and identified left peumatization on uncinate process. The pnematized uncinate process was removed endoscopically during functional endoscopic sinus surgery. In any case of paranasal sinus pathology, anatomy should be carefully reviewed prior to performing endoscopic sinus surgery in terms of both pathologies and anatomical variants such as pneumatized uncinate process
Associations between Optic Cup-to-disc Ratio and Systemic Factors in the Healthy Korean Population
김양재,김준모,심승희,배정훈,박기호 대한안과학회 2015 Korean Journal of Ophthalmology Vol.29 No.5
Purpose: To assess the relationships between optic cup-to-disc ratio (CDR) and age, sex, and other demographicand health characteristics in the healthy Korean population. Methods: The study design was retrospective and population-based. A total of 28,377 subjects who participatedin the Korea National Health and Nutrition Examination Survey between 2008 and 2011 were enrolled inthis study. Participants underwent structured interviews as well as systemic and ophthalmic examinations. Patientswith glaucoma who were diagnosed using the International Society of Geographical and EpidemiologicalOphthalmology classification were excluded. Changes in vertical CDR were examined by age in relation tosystemic variables on multiple regression analysis. Results: The mean vertical CDR was 0.34 ± 0.12. The vertical CDR increased with age from subjects in their20s to those in their 80s (p < 0.001). The mean CDR in males was significantly higher than that of females(p < 0.001). On multiple regression analysis, the vertical CDR was positively associated with age (p < 0.001),male sex (p < 0.001), diastolic blood pressure (p = 0.009), and intraocular pressure (p < 0.001) but was negativelyassociated with body mass index (p < 0.001). Conclusions: Greater vertical CDR was related to age, male sex, higher diastolic blood pressure, higher intraocularpressure, and lower body mass index in healthy Koreans.
Y. J. Kim(김양재),S. Lee(이상훈),S. W. Cha(차석원) Korean Society for Precision Engineering 2021 한국정밀공학회 학술발표대회 논문집 Vol.2021 No.11월
The process of manufacturing an anode functional layer (AFL) in the conventional SOFC is inefficient, because, typically, the powder is ball-milled for a long time and sintered above 1,200°C. Also, in thin-film SOFCs, after fabricating the anode, a new target material or precursor is loaded on the vacuum deposition equipment to deposit the AFL. Alternatively, transferring the cell to other thin-film deposition equipment to lay the AFL requires more time and labor. Therefore, this study developed a process to fabricate an anode and AFL through the co-sputtering process continuously. By applying DC power to Ni and RF power to the Y/Zr metal alloy target, a Ni-YSZ anode of 700 nm and an AFL of 150 nm were continuously fabricated. This one-step fabrication process of an anode and AFL controls the proportion of the deposited material by adjusting DC and RF’s sputtering power. The film deposited with various power ratios was applied to anodic aluminum oxide wafers to characterize its electrochemical performance as SOFCs. XPS and EDS analyses were performed to confirm the compositional change according to the application of power. FESEM, AFM, and FIB-SEM analyses were performed to identify the microstructure change according to YSZ content.
편도 적출술시 섬유소 응고제(Tachocomb^Ⓡ)이통증 조절에 미치는 영향
최장원,김양재,구수권,송창윤,김현규,조규섭 대한이비인후과학회 부산,울산,경남 지부회 2011 임상이비인후과 Vol.22 No.2
Background and Objectives:Patients who undergo tonsillectomy suffer from pain. This pain induces other symptoms like dysphagia, dehydration. Pain control plays an important role in post-tonsillectomy care. The aim of this study is to investigate usefulness of fibrin glue-solid type (Tachocomb^Ⓡ, Nycomed Austria GmbH, Austria) wound-covering material in reduction of pain after tonsillectomy. Subjects and Method:One hundred seventeen adult-patients underwent tonsillectomy were included in this prospective double-blind study. After removal of both tonsils, electrocauterization was done on both tonsillar beds for sufficient hemostasis. One side of tonsillar bed randomly selected by operating surgeon was coated with the fibrin glue. The other side was left without coating. Pain scores were measured at the first (postoperative day, POD1), second (POD2), third (POD3) and tenth (POD10) day of the operation by using visual analogue scale (VAS). Results:Post-tonsillectomy pain was significantly reduced in the fibrin glue group as compared to the control group (p<0.05).Each mean VAS scores difference after tonsillectomy were 0.99±0.27/0.82±0.29/1.19±0.32/0.83±0.20 (POD1/POD2/POD3/POD10). Conclusion:This study shows that the application of the fibrin glue on tonsillectomy site was effective for postoperative pain control.
박한석,김양재,송수정,배정훈,Han Seok Park,MD,Yang Jae Kim,MD,Su Jeong Song,MD,Jeong Hun Bae,MD 대한안과학회 2014 대한안과학회지 Vol.55 No.1
Purpose: To report a case of oxaliplatin (Eloxatin<sup>®)-related ocular toxicity in a patient with advanced stomach cancer. Case summary: A 43-year-old female with advanced stomach cancer experienced visual symptoms during the treatment with oxaliplatin on a XELOX schedule (a combination of oxaliplatin and capecitabine). After 1 cycle of chemotherapy, she complained of blurred vision and visual field defects in both eyes. Visual field tests showed a bilateral concentric field defect and the electroretinogram revealed a marked reduction of responses in both eyes. On the second cycle of chemotherapy, oxaliplatin was discontinued due to suspicious ocular toxicity. Her visual symptoms improved and visual field test showed normal results 1 month after oxaliplatin discontinuation. However, 3 months after oxaliplatin discontinuation, electroretinogram remained abnormal despite the progressive improvement. Conclusions: Platinum-based antineoplastic agents such as oxaliplatin should be administered with caution because oxaliplatin can cause damage to the retinal photoreceptors and the optic nerve. Early detection of ocular toxicity and discontinuation of oxaliplatin therapy could prevent severe and irreversible visual loss. J Korean Ophthalmol Soc 2014;55(1):143-148