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바이오 임피던스 분석을 이용한 노인 뇌졸중 편마비 환자의 하지 분석
유찬욱 고령자・치매작업치료학회 2017 고령자.치매작업치료학회지 Vol.11 No.2
Objective : This study is to compare and analyze the bioelectrical impedance values on the lower extremity (affected and non-affected side) in hemiplegic stroke older patients. Methods : Experimental subjects were 24 stroke patients with hemiplegia undergoing stroke rehabilitation between October to November, 2015. Prediction marker, resistance, reactance, and phase angle were measured in the lower extremity (affected and non-affected side) of hemiplegic stroke patients, using MultiScan 5000, and then they were expressed as quantified values. Results : The affected and non-affected side of lower extremity in stroke older patients with hemiplegia exhibited significant differences in prediction marker, reactance, and phase angle (p<0.05). Conclusion : There were significant differences in the impedance values at the affected and non-affected side of hemiplegic stroke older patients. Thus, the possibility of evaluating stroke patients undergoing clinical rehabilitation therapy was suggested. 목적: 본 연구는 노인 뇌졸중 편마비 환자 22명을 대상으로 하지부위에 마비측과 비마비측의 바이오 임피던스 값을 비교 분석하고자 하는 것이다. 연구방법: 본 연구에서는 2015년 10월부터 11월 까지 뇌졸중으로 진단 받은 편마비환자 22명을 대상으로 하였다. MultiScan5000을 이용하여 바이오임피던스를 측정하였고 프래딕션마커(prediction mark), 저항성분(resistance), 리액턴스(reactance), 위상각(phase angle)을 비교분석하였다. 연구결과:뇌졸중 편마비 환자의 마비측과 비마비측 부위에서 임피던스 값을 측정하여 정량화된 수치로 나타낸 결과 뇌졸중 편마비 환자의 마비측과 비마비측의 프래딕션마커(prediction mark), 리액턴스(reactance), 위상각(phase angle)의 값의 유의한 차이를 보였다(p<0.05). 고찰:본 연구 결과를 통해 뇌졸중 편마비 환자의 하지에 마비측과 비마비측의 임피던스값의 유의한 차이가 있다는 것을 알 수 있었고 또한, 이를 통해 임상의 재활치료를 받는 뇌졸중 환자의 치료에 정량화된 수치로 측정할 수 있는 유용한 평가도구로서의 가능성을 제시하였다
유찬욱,양영애,백승완,김재형,전계록 한국멀티미디어학회 2017 멀티미디어학회논문지 Vol.20 No.2
For many stroke patients undergoing rehabilitation therapy, there is a need for indicator for evaluating the body function in paretic and non-paretic regions of stroke patients quantitatively. In this paper, the function of muscles and cells in paretic and non-paretic regions of severe and mild hemiplegic stroke patients was evaluated using multi-channel bioelectrical impedance spectroscopy. The paretic and non-paretic regions of severe and mild stroke patients were quantitatively assessed by using bioelectrical impedance parameters such as prediction marker (PM), phase angle (θ), characteristic frequency (fc), and bioelectrical impedance vector analysis (BIVA). The mean values of impedance vector were significantly discriminated in all comparisons (severe-paretic, severe-non-paretic, mild-paretic, and mild-non-paretic). The bioelectrical impedance parameters were proved to be a very valuable tool for quantitatively evaluating the paretic and non-paretic regions of hemiplegic stroke patients.
선박용 질소발생장치 효율 증대를 위한 mixing chamber 설계 변경 방안 연구
유찬욱,최주형,김정환,신원협,류영춘,이경우,김정렬 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11
Petroleums or chemical cargo transported Tankers are have to be installed inert gas system to prevent explosion. Inert gas system is to ensure that less than 5% the oxygen content in the cargo tanks condition to avoid the explosion range. In the nitrogen generation type inert gas system, the flow control within the Mixing Chamber has more effect of the overall N2 ratio. In this paper, study for N2 ratio rise method by mixing chamber`s inner design change use computational analysis methods.
컴퓨터 인지재활 프로그램이 노인 뇌졸중 환자의 인지향상에 미치는 효과
유찬욱 대한고령친화산업학회 2009 대한고령친화산업학회지 Vol.1 No.2
연구목적 본 연구에서는 인지기능의 장애를 보이는 노인 뇌졸중 환자에서 컴퓨터를 이용한 인지치료가 인지 기능에 미치는 효과에 대해 알아보기 위함이다. 연구방법 뇌졸중 노인 환자 40명(남자22명, 여자18명)을 두 집단(실험군, 대조군)으로 무작위할당하고, 대조군 은 작업치료를 포함한 고식적인 치료를 실험군은 고식적인 치료와 함께 컴퓨터 인지재활치료를 매 일 30분 주당5회 총6주간 훈련을 하였고, 모든 대상자들은 실험 전후로 인지평가인 LOTCA와 독 립적인 일상생활활동의 평가인 FIM을 측정하여 비교분석 하였다. 연구결과 실험 전 평가에서는 두 집단 간 인지기능과 독립적인 일상생활활동 점수에서 통계적으로 유의한 차 이는 없었다. 4주간 치료 후 실험군에서는 대조군에 비해 시운동과 분류력 등 인지능력평가에서 통 계적으로 유의한 점수상승을 보였으며(P<.05), 독립적 일상생활 활동 점수에서는 대조군에 비해 통 계적으로 유의한 점수상승을 보이지 않았다(P>.05). 결론 본 연구를 통하여 컴퓨터 인지재활 프로그램인 Rehacom은 인지기능의 향상을 보였고, 인지장애를 보이는 노인 뇌졸중 환자에게 유용한 치료도구가 될 수 있을 것으로 생각된다.
유찬욱,황영준,김건호,한은주,전계록,김재형 한국멀티미디어학회 2018 멀티미디어학회논문지 Vol.21 No.6
Indicators to quantitatively assess the physical conditions can help optimize the effectiveness of rehabilitation therapy for stroke patients. The body composition variations in the paretic and non-paretic regions of stroke patients with cerebral infarction (7 males, 31 females) were analyzed using multi-frequency bioelectrical impedance. Specifically, resistance (R), lean mass (LM), fat mass (FM), extracellular water (ECW), intracellular water (ICW), R/LM relation, basal metabolic rate (BMR)/LM relation were utilized to evaluate the paretic and non-paretic regions of subjects with cerebral infarction. These values showed significant differences in gender and paretic/non-paretic regions. R and FM were high but LM and ICW were lower in female and paralysis. ECW was lower in females than males, but there was no considerable difference between paralysis and non-paralysis in both males and females. In addition, there was an inverse distribution between R and LM in paretic and non-paretic regions, with males on the upper left and females on the lower right. Furthermore, the relationship between BMR and LM showed excellent linearity (slope: 22.17 kcal/day/kg) irrespective of gender, paralysis, and non-paralysis. An easy, non-invasive and quantitative assessment using bioelectrical impedance would provide an useful tool for evaluating patients with cerebral infarction receiving rehabilitation therapy.
유찬욱,김재형,황영준,김건호,신용일,전계록 한국멀티미디어학회 2017 멀티미디어학회논문지 Vol.20 No.12
Many stroke patients undergoing rehabilitation therapy require a quantitative indicator for the evaluation of body function in paretic and non-paretic regions. In this study, the impedance parameters were acquired to assess the physical status in the upper extremity of thirty six stroke patients with hemiplegia caused by cerebral hemorrhage (10 patients) and cerebral infarction (26 patients), using bioelectrical impedance. Prediction marker (PM), phase angle (PA), PM/PA, and resistance (R) versus reactance (Xc) were utilized to evaluate the functional status of the paretic and non-paretic regions. In addition, the hand grip strength (HGS) and the pinch strength (lateral, palmer, tip) were measured on the upper extremity of hemiplegic stroke patients. PM was distributed in inversely proportional to HGS, but PA was distributed in proportional to HGS. However, there were a number of patients with HGS of 0, regardless of the impedance parameters (PM, PA, R vs. Xc). Paretic and non-paretic status in upper extremity of these patients could not be analyzed using impedance parameters. At the rehabilitation therapist's instructions, they were unable to move the hand and fingers of the paretic upper extremity by cranial nerve damage, motor nerve damage, and severe cognitive decline.