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백서 심근경색모델에서 시간경과와 경색의 크기에 따른 심자도의 변화
김미성(Mi Sung Kim),박영선(Young Sun Park),권순길(Sun Gil Kwon),지정훈(Jeong Hoon Ji),신종성(Jong Sung Shin),오광식(Kwang Sik Oh),양용모(Yong Mo Yang),연태진(Tae Jin Youn),김동운(Dong Woon Kim),조명찬(Myeong Chan Cho),이용호(Yong Ho 대한내과학회 2002 대한내과학회지 Vol.62 No.1
Background: Magnetocardiogram (MCG), which records the changes of magnetic fields generated by the heart`s electrical activity, theoritically can provide unique data for clinical application. To date, MCG has been investigated only at a single time point after myocardial infarction (MI) with severe left ventricular dysfunction in rats. The purpose of the present study was to investigate sequential changes of MCG after MI and to evaluate effects of infarct size on MCG. Methods: Acute MI were induced by the permanent ligation of left coronary artery in 22 rats. Magnetic fields were recorded just above a rat with Nb Superconducting Quantum Interference Device (SQUID) gradiometer inside a magnetically shielded room. MCG was measured before and immediately after surgery and it was subsequently recorded at the time points of 1, 4 and 6 hours post operatively. MCG was also measured at 1, 3, 7 and 21 days after surgery. Results: Elevation of ST segment and appearance of pathological Q wave on the MCG were evident immediately after the ligation of coronary artery and persisted to 6 hours after MI. On MCG, ST segment was depressed and T wave was inverted from 1 day after MI. In rats with small-and moderate- sized MI (infarct size〈30%), ST depression returned to near the isoelectric level and Q wave disappeared from 7 days after MI. However, ST depression and Q wave were still present in rats with larger infarct (infarct size≥30%). Conclusion: Evolutional changes of MCG were well-recognized up to 21 days after MI. Furthermore, the infarct size can be expressed by the extent of Q wave and ST segment depression on MCG. Taken together, these data indicate that MCG is a helpful modality for the diagnosis, evaluation of infarct size and follow up after MI.(Korean J Med 62:42-48, 2002)
Corrigendum: Korean treatment recommendations for patients with axial spondyloarthritis
Mi Ryoung Seo,Jina Yeo,Jun Won Park,Yeon-Ah Lee,Ju Ho Lee,Eun Ha Kang,Seon Mi Ji,Seong-Ryul Kwon,Seong-Kyu Kim,Tae-Jong Kim,Tae-Hwan Kim,Hye Won Kim,Min-Chan Park,Kichul Shin,Sang-Hoon Lee,Eun Young L 대한내과학회 2024 The Korean Journal of Internal Medicine Vol.39 No.1
Wood’s lamp fluorescence of milia
( Ji Hae Lee ),( Sung Hye Eun ),( Han Mi Jung ),( Gyong Moon Kim ),( Jung Min Bae ) 대한피부과학회 2018 대한피부과학회 학술발표대회집 Vol.70 No.1
Wood’s lamp, which emits light at wavelengths between 320 and 400 nm with a peak at 365 nm, is widely used to evaluate pigment disorders, including hyperpigmentation and vitiligo and used for the photodynamic diagnosis of skin cancers and detection of microorganisms such as bacteria and fungi. We would like to report that Wood’s lamp is also effective in distinguishing milia from other skin lesions. A 70-year old woman presented with multiple, skin-colored tiny papules on her forehead. We observed that the milia fluoresce bright yellow under the Wood’s lamp (395-nm mode, IDS-3100, ILLUCO, Gunpo, Korea). Autofluorescence is the natural emission of light by biological structures such as collagen, elastin, and flavins; keratin also undergoes maximum excitation at 405 nm and the fluorescence emission of 460-500 nm. Because milium is full of keratin in its cystic cavity, it is speculated that the accumulation of autofluorescence of keratin materials excited by 395 nm produces great contrast with surrounding skin. Because of their fluorescence, milia may be distinguished easily from other tiny papules of the skin. Thus, Wood’s lamp is a convenient diagnostic tool for milia that can help identify the location of the lesions and determine the course of treatment.