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김흥수,백승엽,박동호,유건희 대한마취통증의학회 2018 Anesthesia and pain medicine Vol.13 No.1
Duchenne muscular dystrophy (DMD) is a relatively rare muscle disease with severe symptoms. Owing to the commonly limited mouth opening, cervical spine immobility, and deformation, DMD patients often present with a difficult airway. Patients with DMD are sensitive to sedation, anesthesia, and neuromuscular blockade. This risk increases as the disease progresses with age. The anesthetic management of these patients can cause various issues, presenting a challenge to anesthesiologists. We administered anesthesia for an orchiectomy in a patient with testicular cancer using total intravenous anesthesia with propofol and remifentanil without muscle relaxants. Although the patient was Mallampati grade IV due to neck stiffness, tracheal intubation was successfully performed with a portable videolaryngoscope. The intraoperative course was uneventful and recovery was rapid without postoperative complications. In conclusion, anesthesia without a muscle relaxant was successful and the patient recovered rapidly, even with a difficult tracheal intubation.
시력교정용 안경렌즈의 융복합적 기술개발을 위한 UV차단 성능 평가
김흥수 한국융합학회 2018 한국융합학회논문지 Vol.9 No.4
본 연구는 시력교정용 안경렌즈의 재질에 따른 자외선 차단 성능을 확인하고자 하였다. 안경렌즈 Acryl, CR-39, NK-55, MR-8 재질의 렌즈에 대하여 흠집 방지와 반사방지 코팅을 한 렌즈 Group A와 여기에 자외선 차단 코팅을 추가한 렌즈 Group B, 그리고 자외선 차단 전용렌즈 Group C에 대하여 자외선 투과율을 측정하였다. 그 결과, UV-A 파장에서 Group A는 CR-39 렌즈가 7.726 %, NK-55 렌즈, 0.043 %, MR-8과 Acryl 렌즈, 0.007 % 순 이었으며 Group B는 CR-39 렌즈가 0.038 %, NK-55 렌즈, 0.037 %, MR-8과 Acryl 렌즈, 0.007 % 순으로 나타나 CR-39 렌즈의 자외선 차단 성능이 크게 개선되었다. Group C는 굴절률이 1.60과 1.67에서 각각 0.005 %, 0.004 %로 나타나 자외선 차단 성능이 가장 우수하였 다. 저 도수의 렌즈와 썬글라스의 경우, CR-39 렌즈를 가장 많이 사용하는 현실에서 자외선 차단을 위한 새로운 재질 또는 자외선 흡수제, 자외선 차단코팅 기술 등의 융 복합적 기술개발이 요구된다고 하겠다. This study was wanted to confirm ability for UV blocking according to its material. The lenses materials were Acryl, CR-39, NK-55, and MR-8. It was grouped: Group A consisting of anti-scratch hard coated lenses and anti-refractive multi coated lenses, Group B added UV blocking coating on the group A, and Group C consisting of only UV blocking lenses. The results measured UV transmittance, On the UV-A wavelength, Group A showed the UV transmittance of 7.726%, 0.043%, 0.007%, and 0.007% respectively. Group B showed 0.038%, 0.037%, 0.007%, and 0.007%, respectively. The UV-blocking performance of CR-39 has been greatly improved. Group C has shown the best UV blocking function; only 0.005% and 0.004% of UV transmittances.(1.60 and 1.67 index of refraction respectively). For the low power of lenses and sunglasses, the CR-39 lens is the most used. Therefore, to UV blocking from the lens, new materials or UV absorbers or UV coating technology and development of Converged Technologies are required.