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정선민,태경,송창면,이승환,정진혁,지용배 대한이비인후과학회 2020 Clinical and Experimental Otorhinolaryngology Vol.13 No.4
Objectives. This study was conducted evaluate the efficacy of electromyography (EMG) using transcartilaginous (TC) electrodes through the thyroid cartilage and perichondrium. Methods. We prospectively collected EMG data from intraoperative neuromonitoring (IONM) of 54 nerves at risk in 38 patients during thyroidectomy. We followed standardized IONM procedures in all operations. EMG signals from both endotracheal tube (ET) electrodes and TC needle electrodes were recorded simultaneously. We compared the characteristics of the EMG signals and the efficacy of both methods. Results. Significantly higher mean EMG amplitudes were recorded by TC electrodes than by ET electrodes in all four-step procedures (V1-R1-R2-V2, P<0.001). Loss of signal (LOS) occurred in five patients in ET electrodes, but in only two patients in TC electrodes. Postoperative laryngoscopy revealed recurrent laryngeal nerve palsy in the two patients who showed LOS from both the ET and TC electrodes, and vocal cord movement was intact in the other three patients. Therefore, the positive predictive values of LOS in ET and TC electrodes were 40% and 100%, respectively. Conclusion. EMG recording using TC needle electrodes is feasible and effective, making it a good alternative technique for IONM.
화상 분석기를 이용한 폐소세포암종의 형태학적 계측분석 - 세 가지 서로 다른 세포학적 검사간의 비교 분석 -
정선민,하승연,안정석,조현이,정동해,김나래,박상희 대한병리학회 2011 Journal of Pathology and Translational Medicine Vol.45 No.1
Background: There are few studies of how to diagnose small cell lung cancer in cytological tests through morphometric analysis. We tried to measure and analyze characteristics of small cell carcinoma in lung by image analysis. Methods: We studied three types of cytologic specimens from 89 patients who were diagnosed with small cell lung cancer by immunohistochemistry. We measured area, perimeter, maximal length and maximal width of cells from small cell carcinoma using image analysis. Results: In lung aspirates, the nuclear mean area, perimeter, maximal length and maximal width of small cell lung cancer were 218.69 μm2, 55 μm, 18.48 μm and 14.65 μm. In bronchial washings, nuclear measurements were 194.66 μm2, 50.07 μm, 16.27 μm and 14.1 μm. In pleural fluid, values were 177.85 μm2, 48.09 μm, 15.7 μm and 13.37 μm. Conclusions: Nuclear size of small cell lung carcinoma is variable and depends on the cytology method. Nuclei are spindle-shaped and larger in small cell carcinoma from lung aspirates than in bronchial washings or pleural fluid. The cytoplasms of the cells in bronchial washings and pleural fluid were swollen. Therefore, one should consider morphologic changes when trying to diagnose small cell lung cancer through cytological tests.
정선민,박상규,서희원,지용배 대한이비인후과학회 2019 대한이비인후과학회지 두경부외과학 Vol.62 No.5
Tuberculous spondylitis, also known as Pott’s disease, is a disease involving the spine withprogressive destruction. It most commonly involves the thoracic and lumbosacral spine andmay result in severe deformity or neurologic deficit. Although cervical spine involvement israre, it can cause life threatening event. Recently, 70-year-old man presented with progressivedyspnea and dysphagia. Physical examination and radiologic studies showed a huge retropharyngealabscess with bony erosion and sclerotic change at the adjacent cervical spine. After incisionand drainage, it was finally confirmed as a tuberculous abscess. Herein, we report our experiencewith literature review. Korean
혈액투석용 요골동맥-요측부정맥 자가동정맥루 협착에 대한 경피적 경관 혈관성형술의 효과
정선민,김정호,변성수,강진모,최상태,김종우,김형식,최혜영,박재형 대한영상의학회 2016 대한영상의학회지 Vol.74 No.2
Purpose: The purpose of this study was to evaluate the effectiveness of percutaneous transluminal angioplasty (PTA) on stenosis of autogenous radiocephalic arteriovenous fistula (RCF) for hemodialysis and to determine the factors influencing patency. Materials and Methods: This retrospective study included 136 patients referred for PTA of RCF stenosis between March 2005 and July 2014. The technical success rate, complications, and patency rate were evaluated. The following factors were analyzed as they might influence patency: age, gender, site and duration of arteriovenous fistula, underlying disease, body mass index, hypercholesterolemia, smoking, peripheral artery or coronary artery occlusive disease, stenosis length/grade, cutting balloon, and balloon size. Results: The initial technical success rate was 91.9% (125/136). Complications included vessel rupture (n = 2) and vessel dissection (n = 2). The patency rates at 6, 12, 24, and 48 months after PTA were 81.9, 67.1, 52.7, and 42.3%, respectively. The patency rate was higher in cases with longer (> 3 cm) stenosis (p = 0.04). Use of cutting balloon and larger size of balloon catheter made the patency longer, but this difference was not statistically significant (p = 0.637, 0.258). Conclusion: PTA is a safe and effective way to manage stenosis in RCF. The length of stenosis was the only factor which affected the patency rate in this study.