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지속성 및 일과성 향지성 방향전환성두위안진 환자군에서 이석정복술의 효과 비교: 단기 추적 관찰
전승식,이성원,김성균,김용복,박일석,홍석민 대한평형의학회 2018 Research in Vestibular Science Vol.17 No.3
Objectives: Patients, who showed persistent geotropic-direction changing positional nystagmus (p-DCPN) tend to have different clinical manifestations from those who showed transient geotropic DCPN (t-DCPN). We investigated the clinical characteristics between p-DCPN and t-DCPN patients, and its recovery rate after canalith repositioning procedure (CRP).Methods: Based on the duration of nystagmus, 117 geotropic DCPN patients were classified to 2 groups, p-DCPN and t-DCPN. Barbeque maneuver had been introduced towards the opposite direction of null plane for the p-DCPN patients, and to the opposite direction of stronger nystagmus for the t-DCPN patients.Results: Seventy-four patients showed t-DCPN and 43 patients were classified to the p-DCPN cases. No p-DCPN patient showed prompt improvement after the 1st canalolith reposition therapy. Among the t-DCPN patients, 18 canal switch cases were found , but, there was no canal switch cases found among the p-DCPN The CRP has showed less effective for the p-DCPN patients than the t-DCPN patients (after the 1st CRP, 37 in 74 improved, p<0.001).Conclusions: Due to its distinguishing clinical manifestation, p-DCPN may have different pathogenesis and clinical mechanisms from t-DCPN. And for the p-DCPN patients, the CRP seems not an efficient treatment compared to the t-DCPN patients. Further study with larger number of enrolled subjects is necessary.
조지원,전승식,홍석민 대한이비인후과학회 2015 대한이비인후과학회지 두경부외과학 Vol.58 No.9
Meniere’s disease in children is characterised with a hard and long-term diagnostic course, for which there is no accurate classification and treatment plan. A patient may undergo severe discomfort and long-term contraction of the disease. We experienced a 13-year-old female suffering from recurrent dizziness, and found that she had hearing loss, and tinnitus on her right ear. We diagnosed it as possible meniere’s disease, but the disease progressed despite a trial of medication. The patient then underwent an endolymphatic sac decompression. During 6 months after the operation, she has shown only mild, intermittent dizzy symptoms, without severe vertigo. We report this clinical experience with a brief review of literature.
박일석(Il Seok Park),전승식(Seung Sik Jeon),심정원(Jung Weon Shim),홍석민(Seok Min Hong) 대한두경부종양학회 2015 대한두경부 종양학회지 Vol.31 No.1
An osteoma of the external auditory canal(EAC) is an uncommon benign tumor. If a canal obstruction occurs, ear fullness or conductive hearing loss can arise. But, the association of an osteoma with a cholesteatoma is ex-tremely rare. Therefore, we report a case of a 35-year-old female patient with osteoma of temporal bone that was complicated with EAC cholesteatoma.
반회후두신경 손상을 동반하지 않은 갑상선 절제술 환자에서 수술 초기의 음성 및 연하 기능의 변화에 대한 분석
김희진,금보람,김근희,전승식,김혜진,김성균,홍석진,홍석민,김용복,박일석,Kim, Heejin,Keum, Bo-Ram,Kim, Geun Hee,Jeon, Seung Sik,Kim, Hyejeen,Kim, Sung Kyun,Hong, Seok Jin,Hong, Seok-Min,Kim, Yong-Bok,Park, Il-Seok 대한후두음성언어의학회 2016 대한후두음성언어의학회지 Vol.27 No.2
Background and Objectives : After thyroidectomy, many patients experience problems report such things as reduced voice range and vocal fatigue, swallowing problems without superior and recurrent laryngeal nerve injury. The purpose of this study was to evaluate voice and swallowing problems before and after thyroid surgery without laryngeal nerve injury. Materials and Methods : Ninety-three patients who underwent thyroidectomy without laryngeal nerve injury and completed the follow-up evaluations were studied between June 2013 and December 2015. Each evaluation was performed preoperatively, as well as 1 week, 1 month postoperatively. Analysis was performed including voice handicap index (VHI), dysphagia handicap index (DHI), and acoustic voice analysis. Results : Patients show significant variation of parameters in the fundamental frequency (F), maximal phonation time (MPT), shimmer, jitter and soft phonation index (SPI) early after operation, and most of them showed recovery of parameters after 1month of operation. Perceptive complaint of voice and swallowing also showed significant decreased after operation (p<0.005). After 1month of operation, MPT, highest frequency and frequency ranges still showed significant decreased parameters. Comparing acoustic and perceptive parameters of total thyroidectomy and lobectomy, there was no significant changes between them except highest frequency (p=0.042). Conclusion : The results from both subjective and objective evaluations show voice and swallowing disturbance after thyroidectomy even in the absence of laryngeal nerve and provide patients information about the recovery process after surgery. Highest frequency parameter showed most significant changes after operation.
지붕 단열성능에 영향을 미치는 방수재 표면 색채의 영향
송재승(Song, Jae-Seung),미야우치 히로유키(Miyauchi Hiroyuki),이준(Lee, Jun),미야우치 카오리(Miyauchi Kaori),전승식(Jeon, Seung-Shick),김규용(Kim, Gyu-Yong) 대한건축학회 2014 大韓建築學會論文集 : 構造系 Vol.30 No.6
For the purpose of improving saving energy of building from viewpoint of roofing system, we focused on the contribution of waterproofing system with thermal insulation performance, and the effect of color difference on waterproofing system were measured and evaluated by using test specimens exposed in the outdoor environment. The test specimens were 8 types with a various color of top coating. The outdoor temperature, solar radiation and the temperature between surface-inside of test specimen were measured in summer and winter season. In case of strong solar radiation, the surface temperature of waterproofing membrane increased in the dark color topcoating. In case of color effect between outside and inside of test specimen, the ratios of thermal insulation on outside-inside in the test specimen were no significant difference by color difference. On the other hand, the dark color top coating in inside-outside showed higher temperature difference more than that of light color. The surface temperature on waterproofing membrane and the surface-air temperature difference against solar radiation was calculated from brightness of color. It was concluded that the color on waterproofing membrane contribute to energy saving in the summer more than winter.