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이주영,석수지,강교신,권태호,김경복,한석재,심재훈,정찬경,정일한,노영호,민영선,정철,정해관,임현술,권태환,배근량 東國大學校醫學硏究所 2004 東國醫學 Vol.11 No.2
최근 서민들의 여가 공간으로 찜질방이 널리 애용되고 있다. 이에 밀폐된 고온의 공간이 인체에 미치는 영향을 알아보고자 한다. 20대 남녀 14명을 대상으로 찜질방에서 안정, 식사 후, 음주 후, 운동 후의혈압, 맥박, 체온, 체중의 변화를 20분 간격으로 3회 측정하였고 각 실험이 끝날 때마다 자각증상설문을 실시하였다. 그리고 찜질방 이용 경험자 108명을 대상으로 일반적 사항과 이용 횟수, 찜질방 이용시 자각증상 등을 설문하였다. 각 분석에서 유의수준 P<0.05일 경우 유의하다고 판정하였다. 실험결과 고온에 노출된 후 체온, 맥박은 증가하고 혈압은 감소하였다. 각 상태에서의 실험이 끝나고 조사한 자각증상에서 음주 후에는 자각증상이 6명(85.7%)에서 약한 자각증상을 호소하여 다른 조건보다 약한 자각증상을 많이 호소하였다. 찜질방 이용 경험자 설문조사 결과 고온에 대한 자각증상 정도에 영향을 미치는 요인으로 연령, 평소 더위를 느끼는 정도 등이 있었다. 고온에 대항하는 인체의 항상성 기전은 심혈관계에 부담을 줄 수 있으므로 심혈관계 기능이 저하된 노약자, 심장 질환자, 혈압 이상자는 장시간의 노출을 금하여야 한다. 인체는 고온에 의한 체온 상승을 완화하기 위하여 발한량이 증가하므로, 적절한 수분 공급을 통해 체액을 보충하는 것이 필요하다. 음주 후에는 신체 변화에 대한 자각 능력이 감소하므로 극한의 환경에 폭로되는 상황에 더 주의하여야 한다. 'Jjimjilbang' (Dry sauna) has been the popular place of leisure in recent years. This study was carried out to find out the effects of high temperature to human body at Jjimjilbang. Nine male and five female people, who are in their twenties, had their body temperature, pulse rate, blood pressure and weight changes measured on every 20 minutes for three times, all in a steady state, after a controlled meal, after exercise and after alcohol drinking. Also, the authors conducted a questionnaire survey among 108 people that experienced Jjimjilbang in Gyeongju-si. For statistical analysis showing less than P<0.05 was proven to be significant. When exposed to high temperature, body temperature, blood pressure and pulse rate are likely to be increased. Alcohol consumption get participants' consciousness altered substantially in respect to the same situation of the previously achieved experiment. In questionnaire survey, factors that influenced the recognition of subjective symptoms are age and degree of sensitive to the heat at ordinary times. The homeostatic mechanism of the human body applied pressure on the cardiovascular system when confronting high temperature. But, old or weak people whose cardiovascular function has deteriorated, people with heart complications or abnormal blood pressure should avoid being exposed to high temperatures for long periods. To relive the rise of body temperature at high temperatures, perspiration must be increased, body fluids must be replenished appropriately. Alcohol drinking deceased seif consciousness about the body changes. So, Some cautions are required for using Jjimjilbang after alcohol drinking.
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레이저 굴절교정 수술을 위한 웨이브프론트 맵의 선택에서 구면수차의 고려
안성민,석수지,박철용,Sung Min Ahn,Su Sie Seok,Choul Yong Park 대한안과학회 2011 대한안과학회지 Vol.52 No.2
Purpose: To report the dynamic nature of human optical aberrations in the scotopic condition. Methods: A total of 20 eyes who were candidates for laser vision correction were included in the present study. Repeated wavefront data were obtained using WavescanTM (AMO/VISX). From the wavefront analysis data, the sphere, astigmatism, average pupil size, spherical aberration, coma and trefoil were selected and used to investigate any correlation among the parameters. Results: The sphere, spherical aberration, coma and pupil size showed a dynamic change in the scotopic condition. The spherical aberration and pupil size decreased by the amount of 0.10 ± 0.04 μm and 0.55 ± 0.37 mm as the sphere changed 1 D in myopic direction. There was significant positive correlation between the sphere and spherical aberration in 13 eyes of 9 patients (65%), between the sphere and pupil size in 5 eyes of 4 patients (25%), and between the sphere and coma in 3 eyes of 3 patients (15%). The spherical aberration decreased significantly in 4 eyes of 4 patients (20%) as the pupil size decreased. Conclusions: The optical aberration of human eyes showed a dynamic nature in the scotopic condition. In particular, there was significant correlation between the sphere and spherical aberration. The observed correlations have the potential to be used as helpful indicators to select the optimal wavefront data for the laser vision correction. J Korean Ophthalmol Soc 2011;52(2):147-156
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Initial Pattern of Optic Nerve Enhancement in Korean Patients with Unilateral Optic Neuritis
Dae Yong Son,Kyung-Ah Park,Su Sie Seok,Ju-Yeun Lee,Sei Yeul Oh 대한안과학회 2017 Korean Journal of Ophthalmology Vol.31 No.1
Purpose: The purpose of this study was to demonstrate whether the pattern of optic nerve enhancement in magnetic resonance imaging (MRI) can help to differentiate between idiopathic optic neuritis (ON), neuromyelitis optica (NMO), and multiple sclerosis (MS) in unilateral ON. Methods: An MRI of the brain and orbits was obtained in patients with acute unilateral ON. Patients with ON were divided into three groups: NMO, MS, and idiopathic ON. The length and location of the abnormal optic nerve enhancement were compared for ON eyes with and without NMO or MS. The correlation between the pattern of optic nerve enhancement and the outcome of visual function was analyzed. Results: Of the 36 patients with ON who underwent an MRI within 2 weeks of the onset, 19 were diagnosed with idiopathic ON, 9 with NMO, and 8 with MS. Enhancement of the optic nerve occurred in 21 patients (58.3%) and was limited to the orbital segment in 12 patients. Neither the length nor the location of the optic nerve enhancement was significantly correlated with visual functions other than contrast sensitivity or the diagnosis of idiopathic ON, MS, or NMO. Patients with greater extent of optic nerve sheath enhancement and more posterior segment involvement showed higher contrast sensitivity. Conclusions: Our data revealed that the pattern of optic nerve enhancement was not associated with diagnosis of idiopathic ON, NMO, or MS in Korean patients with unilateral ON. We believe further studies that include different ethnic groups will lead to a more definitive answer on this subject.
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