• 제목/요약/키워드: medical delivery system

검색결과 469건 처리시간 0.035초

선택적 최적화 변수(Selectable Optimization Parameters)에 따른 부피적조절회전방사선치료(VMAT)의 선량학적 영향 (Dosimetric Effect on Selectable Optimization Parameters of Volumatric Modulated Arc Therapy)

  • 정재용;신영주;손승창;김연래;민정환;서태석
    • 한국의학물리학회지:의학물리
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    • 제23권1호
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    • pp.15-25
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    • 2012
  • 부피적조절회전방사선치료(VMAT)의 정도관리를 TG-119에서 제시된 권고안을 통해 평가하고자 하였다. 또한 선택적 최적화 변수에 따른 치료계획의 평가와 그에 따른 선량학적 특성을 평가하고자 하였다. Varian사의 iX선형가속기와 Nucletron사의 Oncentra MasterPlan 치료계획장치를 결합하여 VMAT 치료계획을 수립하였다. TG-119에 제시된 5가지의 구조세트를 이용하여 아크 수, 겐트리 간격, 치료 시간 등의 선택적 최적화 변수(selectable optimization parameters)를 변화하여 치료 계획의 평가와 선량검증을 통해 정확성을 평가하였다. 치료계획의 평가는 선량체적히스토그램을 이용하여 표적과 위험장기의 평균값과 표준편차를 이용하였으며 선량검증은 이온 전리함과 $Delta^{4PT}$ bi-planar diode array를 이용하였다. 치료계획의 평가에서 싱글 아크의 경우 C-shape (hard)를 제외한 다른 구조세트에서 목표한 선량에 근접하는 결과를 보였으며 듀얼 아크의 경우에는 C-shape (hard)를 제외한 다른 구조세트에서 제시한 목표 선량에 도달하였다. 또한 선택 변수에 대한 평가에서는 전립선과 같은 간단한 구조 세트에서는 아크 수에 따른 치료계획의 차이는 거의 나타나지 않았으나, 두경부와 같은 복잡한 구조에서는 듀얼 아크가 위험장기에 대하여 좀 더 우수한 결과를 나타내었다. 겐트리 간격의 크기 변화에 의한 선량분포는 $6^{\circ}$에 비해 $4^{\circ}$의 겐트리 간격이 우수하였으나 $2^{\circ}$ 간격과는 거의 차이가 없었다. 점선 량의 정확성 평가에서는 표적과 위험장기에 대한 점선량의 측정값과 계산값의 평균오차는 싱글 아크와 듀얼 아크 모두 3% 이내였으며, 신뢰구간은 싱글아크와 듀얼 아크가 4% 내로 허용범위 안에 포함되었다. 겐트리 간격의 크기에 따른 점선량의 정확성 평가에서는 $2^{\circ}$, $4^{\circ}$, $6^{\circ}$ 모두 3% 이내였으며, 표적과 위험장기에 대한 신뢰한계(Confidence limit)는 5% 내로 허용범위 안에 포함되었다. $Delta^{4PT}$를 이용한 싱글 아크와 듀얼 아크의 선량분포 측정에서는 허용기준 3 mm/3%를 통과하는 감마인덱스는 평균 $98.72{\pm}1.52%$$98.30{\pm}1.50%$이었으며 신뢰한계는 2.99%와 3.74%로 허용범위 내에 포함되었다. 겐트리 간격의 크기에 따른 선량의 정확성은 간격이 적을수록 우수한 결과를 나타냈다. 본 연구에서는 VMAT의 정도관리를 TG-119에서 제시된 시험을 수행하였으며 제시된 모든 구조 세트에 대하여 허용기준을 모두 만족하였다. 또한 사용자가 선택할 수 있는 최적화 변수의 변화에 대한 치료계획과 선량학적 영향을 분석하였으며 각 상황에 따른 임상적 특성에 맞는 변수를 선택하는 것이 중요하다고 사료된다.

한국농촌의학회지(韓國農村醫學會誌)에 게재된 연구논문의 분류 및 연구동향 (A Study on the Classification and Research Trends of Articles in The Korean Journal of Rural Medicine)

  • 위유미;김석일;박향;류소연;박종;김기순
    • 농촌의학ㆍ지역보건
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    • 제25권2호
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    • pp.231-244
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    • 2000
  • 한국농촌의학회지 창간호(1976년 발행)부터 24권2호(1999년 발행)까지 총 3호에 게재된 연구논문을 종합 분석한 결과는 다음과 같다. 1. 총 34호에 게재된 전체논문수는 337편이었고 이중 원저논문수는 240편(71.2%)이었다. 원저논문은 1970년대에 13편, 1980년대에 73편, 1990년대에 154편으로 계속 증가하고 있었다. 2. 원저논문 240편의 저자수는 1명에서 10명까지였고 3인인 경우가 55편(22.9%)으로 가장 높았다. 공동저자수가 점차 증가하는 추이를 나타냈다. 연구기관수는 l개에서 5개까지였고 단일기관인 경우가 106편(44.2%)으로 가장 높았다. 1990년대에 오면서 3개이상의 연구기관들이 공동연구하는 양상을 뚜렷이 나타냈다. 3. 게재논문의 사용언어는 97.5%가 한글로 기술되었으며, 영어논문은 2.5%이었다. 원저논문에 연구비를 받았다고 표시된 논문은 24편(10.0%)이었다. 4. 원저논문의 연구영역별 분류에 의하면 보건 관리에 관한 논문이 105편(43.8%), 질병역학 연구논문이 96편(40.0%), 농촌환경 및 농민의 직업성 질환분야는 39편(16.3%)으로 순이었다. 1970년대에는 질병역학 12편(92.3%), 보건관리 1편((7.7%)이었다. 1980년대에는 질병역학 33편(45.2%), 보건관리 29편(39.7%), 농촌환경 및 농민의 직업성질환 11편(15.1%)이었다. 1990년대에는 보건관리 75편(48.7%)으로 가장 많았고 질병역학 51편(33.1%), 농촌환경 및 농민의 직업성질환 28편 (18.2%) 순이었다. 5. 각 영역별 연구주제별 분류에 의하면 농촌 환경 및 농민의 직업성질환 논문 39편중 농약중독 8편(20.5%)으로 가장 많았고 농부증, 비닐하우스증에 관한 논문은 각각 7편(17.9%), 사고손상 및 기타중독 6편(15.4%) 순이었다. 질병역학 논문 96편중 기생충 56편(58.3%)으로 가장 많았고, 비감영성질환 16편(16.7%), 감염성질환 12편(12.5%)순이었다. 보건관리 논문 105편중 의료이용행태 25편(23.8%)으로 가장 많았고, 보건의료체계 18편(17.1%), 모자보건 13편(12.4%)순이었다. 연대별 다빈도 10순위 연구주제별 분포에 의하면 1970년대에는 기생충 6편(46.2%), 비감염성질환 4편(30.8%)순이었다. 1980년대에는 기생충 28편(38.4%)으로 가장 많았고, 보건의료체계 9편(12.3%), 의료이용행태 7편(9.6%), 모자보건 5편(6.8%), 농약중독 4편(5.5% )순이었다. 1990년대에는 기생충 22편(14.3%), 의료이용행태 18편(11.7%), 노인보건 16편(10.4%), 보건의료체계 14편(9.1%), 감염성질환 10편(6.5%), 비감염성질환 10편(6.5%) 순이었다. 6. 원저논문의 연구설계방법은 분석적연구 115편(47.9%), 기술적연구 92편(38.3%), 실험적 연구 21편(9.2%), 증례보고 6편(2.5%)순이었다. 1970년대에는 기술적연구 13편(100%)이고, 1980년대에는 기술적 연구 47편(64.4%), 분석적연구 19편(26.0%)이었으며, 1990년대에는 분석적연구 96편(62.8%), 기술적연구 32편(20.9%)으로 나타났다. 통계처리방법으로는 3개 연구영역 모두 지술적통계량을 모든 논문에 시도하였고, ${\chi}^2$-검정, t-검정 순이었다. 이상의 결과에서, 한국농촌의학회지에 원저 논문의 게재가 점차 증가하고 있고, 저자수 및 연구기관수도 1990년대에 들어 증가하여 농촌의 보건의료에 관한 연구가 계속 활발히 이루어지고 있다고 판단된다. 연구영역을 분석한 결과 보건관리에 관한 논문이 가장 많았는데 1970, 1980년대에 질병역학 논문이 가장 많았지만 1990년대에 와서 보건관리 논문이 급증한데 기인한다. 연구주제별 분석결과 1970, 1980, 1990년대 공히 질병역학 영역에 속한 기생충에 관한 논문이 가장 많아서 그동안 우리나라 농촌에 기생충 문제가 현 비중을 차지하고 있었음을 반영 할 수 있다. 그러나 1990년대에 그 비중이 감소하는 추세이며 앞으로 의료 이용행태, 노인보건 등 보건관리에 관한 주제에 대한 연구가 더 많이 이루어질 것으로 예측된다.

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가족계획과 모자보건 통합을 위한 조산원의 투입효과 분석 -서산지역의 개입연구 평가보고- (An Intervention Study on Integration of Family Planning and Maternal/Infant Care Services in Rural Korea)

  • 방숙;한성현;이정자;안문영;이인숙;김은실;김종호
    • Journal of Preventive Medicine and Public Health
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    • 제20권1호
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    • pp.165-203
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    • 1987
  • This project was a service-cum-research effort with a quasi-experimental study design to examine the health benefits of an integrated Family Planning (FP)/Maternal & Child health (MCH) Service approach that provides crucial factors missing in the present on-going programs. The specific objectives were: 1) To test the effectiveness of trained nurse/midwives (MW) assigned as change agents in the Health Sub-Center (HSC) to bring about the changes in the eight FP/MCH indicators, namely; (i)FP/MCH contacts between field workers and their clients (ii) the use of effective FP methods, (iii) the inter-birth interval and/or open interval, (iv) prenatal care by medically qualified personnel, (v) medically supervised deliveries, (vi) the rate of induced abortion, (vii) maternal and infant morbidity, and (viii) preinatal & infant mortality. 2) To measure the integrative linkage (contacts) between MW & HSC workers and between HSC and clients. 3) To examine the organizational or administrative factors influencing integrative linkage between health workers. Study design; The above objectives called for quasi-experimental design setting up a study and control area with and without a midwife. An active intervention program (FP/MCH minimum 'package' program) was conducted for a 2 year period from June 1982-July 1984 in Seosan County and 'before and after' surveys were conducted to measure the change. Service input; This study was undertaken by the Soonchunhyang University in collaboration with WHO. After a baseline survery in 1981, trained nurses/midwives were introduced into two health sub-centers in a rural setting (Seosan county) for a 2 year period from 1982 to 1984. A major service input was the establishment of midwifery services in the existing health delivery system with emphasis on nurse/midwife's role as the link between health workers (nurse aids) and village health workers, and the referral of risk patients to the private physician (OBGY specialist). An evaluation survey was made in August 1984 to assess the effectiveness of this alternative integrated approach in the study areas in comparison with the control area which had normal government services. Method of evaluation; a. In this study, the primary objective was first to examine to what extent the FP/MCH package program brought about changes in the pre-determined eight indicators (outcome and impact measures) and the following relationship was first analyzed; b. Nevertheless, this project did not automatically accept the assumption that if two or more activities were integrated, the results would automatically be better than a non-integrated or categorical program. There is a need to assess the 'integration process' itself within the package program. The process of integration was measured in terms of interactive linkages, or the quantity & quality of contacts between workers & clients and among workers. Intergrative linkages were hypothesized to be influenced by organizational factors at the HSC clinic level including HSC goals, sltrurture, authority, leadership style, resources, and personal characteristics of HSC staff. The extent or degree of integration, as measured by the intensity of integrative linkages, was in turn presumed to influence programme performance. Thus as indicated diagrammatically below, organizational factors constituted the independent variables, integration as the intervening variable and programme performance with respect to family planning and health services as the dependent variable: Concerning organizational factors, however, due to the limited number of HSCs (2 in the study area and 3 in the control area), they were studied by participatory observation of an anthropologist who was independent of the project. In this observation, we examined whether the assumed integration process actually occurred or not. If not, what were the constraints in producing an effective integration process. Summary of Findings; A) Program effects and impact 1. Effects on FP use: During this 2 year action period, FP acceptance increased from 58% in 1981 to 78% in 1984 in both the study and control areas. This increase in both areas was mainly due to the new family planning campaign driven by the Government for the same study period. Therefore, there was no increment of FP acceptance rate due to additional input of MW to the on-going FP program. But in the study area, quality aspects of FP were somewhat improved, having a better continuation rate of IUDs & pills and more use of effective Contraceptive methods in comparison with the control area. 2. Effects of use of MCH services: Between the study and control areas, however, there was a significant difference in maternal and child health care. For example, the coverage of prenatal care was increased from 53% for 1981 birth cohort to 75% for 1984 birth cohort in the study area. In the control area, the same increased from 41% (1981) to 65% (1984). It is noteworthy that almost two thirds of the recent birth cohort received prenatal care even in the control area, indicating that there is a growing demand of MCH care as the size of family norm becomes smaller 3. There has been a substantive increase in delivery care by medical professions in the study area, with an annual increase rate of 10% due to midwives input in the study areas. The project had about two times greater effect on postnatal care (68% vs. 33%) at delivery care(45.2% vs. 26.1%). 4. The study area had better reproductive efficiency (wanted pregancies with FP practice & healthy live births survived by one year old) than the control area, especially among women under 30 (14.1% vs. 9.6%). The proportion of women who preferred the 1st trimester for their first prenatal care rose significantly in the study area as compared to the control area (24% vs 13%). B) Effects on Interactive Linkage 1. This project made a contribution in making several useful steps in the direction of service integration, namely; i) The health workers have become familiar with procedures on how to work together with each other (especially with a midwife) in carrying out their work in FP/MCH and, ii) The health workers have gotten a feeling of the usefulness of family health records (statistical integration) in identifying targets in their own work and their usefulness in caring for family health. 2. On the other hand, because of a lack of required organizational factors, complete linkage was not obtained as the project intended. i) In regards to the government health worker's activities in terms of home visiting there was not much difference between the study & control areas though the MW did more home visiting than Government health workers. ii) In assessing the service performance of MW & health workers, the midwives balanced their workload between 40% FP, 40% MCH & 20% other activities (mainly immunization). However, $85{\sim}90%$ of the services provided by the health workers were other than FP/MCH, mainly for immunizations such as the encephalitis campaign. In the control area, a similar pattern was observed. Over 75% of their service was other than FP/MCH. Therefore, the pattern shows the health workers are a long way from becoming multipurpose workers even though the government is pushing in this direction. 3. Villagers were much more likely to visit the health sub-center clinic in the study area than in the control area (58% vs.31%) and for more combined care (45% vs.23%). C) Organization factors (admistrative integrative issues) 1. When MW (new workers with higher qualification) were introduced to HSC, it was noted that there were conflicts between the existing HSC workers (Nurse aids with less qualification than MW) and the MW for the beginning period of the project. The cause of the conflict was studied by an anthropologist and it was pointed out that these functional integration problems stemmed from the structural inadequacies of the health subcenter organization as indicated below; i) There is still no general consensus about the objectives and goals of the project between the project staff and the existing health workers. ii) There is no formal linkage between the responsibility of each member's job in the health sub-center. iii) There is still little chance for midwives to play a catalytic role or to establish communicative networks between workers in order to link various knowledge and skills to provide better FP/MCH services in the health sub-center. 2. Based on the above findings the project recommended to the County Chief (who has power to control the administrative staff and the technical staff in his county) the following ; i) In order to solve the conflicts between the individual roles and functions in performing health care activities, there must be goals agreed upon by both. ii) The health sub·center must function as an autonomous organization to undertake the integration health project. In order to do that, it is necessary to support administrative considerations, and to establish a communication system for supervision and to control of the health sub-centers. iii) The administrative organization, tentatively, must be organized to bind the health worker's midwive's and director's jobs by an organic relationship in order to achieve the integrative system under the leadership of health sub-center director. After submitting this observation report, there has been better understanding from frequent meetings & communication between HW/MW in FP/MCH work as the program developed. Lessons learned from the Seosan Project (on issues of FP/MCH integration in Korea); 1) A majority or about 80% of the couples are now practicing FP. As indicated by the study, there is a growing demand from clients for the health system to provide more MCH services than FP in order to maintain the achieved small size of family through FP practice. It is fortunate to see that the government is now formulating a MCH policy for the year 2,000 and revising MCH laws and regulations to emphasize more MCH care for achieving a small size family through family planning practice. 2) Goal consensus in FP/MCH shouBd be made among the health workers It administrators, especially to emphasize the need of care of 'wanted' child. But there is a long way to go to realize the 'real' integration of FP into MCH in Korea, unless there is a structural integration FP/MCH because a categorical FP is still first priority to reduce the rate of population growth for economic reasons but not yet for health/welfare reasons in practice. 3) There should be more financial allocation: (i) a midwife should be made available to help to promote the MCH program and coordinate services, (in) there should be a health sub·center director who can provide leadership training for managing the integrated program. There is a need for 'organizational support', if the decision of integration is made to obtain benefit from both FP & MCH. In other words, costs should be paid equally to both FP/MCH. The integration slogan itself, without the commitment of paying such costs, is powerless to advocate it. 4) Need of management training for middle level health personnel is more acute as the Government has already constructed 90 MCH centers attached to the County Health Center but without adequate manpower, facilities, and guidelines for integrating the work of both FP and MCH. 5) The local government still considers these MCH centers only as delivery centers to take care only of those visiting maternity cases. The MCH center should be a center for the managment of all pregnancies occurring in the community and the promotion of FP with a systematic and effective linkage of resources available in the county such as i.e. Village Health Worker, Community Health Practitioner, Health Sub-center Physicians & Health workers, Doctors and Midwives in MCH center, OBGY Specialists in clinics & hospitals as practiced by the Seosan project at primary health care level.

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Vitamin E Acetate를 함유한 Nano-emulsion 제조와 Franz Diffusion Cell을 이용한 Vitamin E Acetate의 경표피 흡수에 관한 In Vitro 연구 (Preparation of Vitamin E Acetate Nano-emulsion and In Vitro Research Regarding Vitamin E Acetate Transdermal Delivery System which Use Franz Diffusion Cell)

  • 박수남;김재현;양희정;원보령;안유진;강명규
    • 대한화장품학회지
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    • 제35권2호
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    • pp.91-101
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    • 2009
  • 본 연구에서는 화장품과 의약품 분야에서 항산화 물질로 널리 사용되고 있는 지용성 비타민인 vitamin E acetate (VEA, tocopheryl acetate)를 이용한 스킨토너 제형의 나노 입자 크기의 에멀젼을 제조하고, 이 에멀젼을 이용해 ICR outbred albino mice (12주령 약 50 g, 암컷) 피부로의 VEA 침투와 receptor phase 조성에 따른 VEA의 용해도 차이에 대한 실험을 수행하였다. VEA를 0.07 wt% 함유한 nano-emulsion의 입자는 에탄올(ethanol, EtOH) 함량이 많을수록 그 크기가 커지는 경향을 보였고 계면활성제 함량이 많은 경우 크기가 작아지는 것을 확인하였다. Receptor phase에서 적절한 EtOH 함량이 VEA의 용해도를 증가시켰다. EtOH 함량이 5.0, 40.0 wt%인 경우보다 10.0, 20.0 wt% 일 때 VEA의 용해도가 높은 것을 확인하였다. Receptor phase의 계면활성제 종류 역시 VEA 용해도에 영향을 주는 것을 확인하였다. 화학구조와 HLB값이 다른 세 가지 계면활성제를 비교한 결과 sorbitan sesquioleate (Arlacel 83; HLB 3.7) > POE (10) hydrogenated castor oil (HCO-10; HLB 6.5) > sorbitan monostearate (Arlacel 60; HLB 4.7)순으로 VEA에 대한 용해도가 증가하였다. Receptor phase에 첨가된 산화 방지제 종류에 따라서도 VEA의 용해도는 차이를 보였다. Ascorbic acid를 함유한 시료는 EDTA-2Na가 첨가된 시료보다 VEA 용해도가 높았고 이 두 가지 산화방지제를 혼합한 시료와 초기에 비슷한 용해도를 보였지만 시간이 지남에 따라 양상이 달라져 최종 24 h 뒤에는 2배 정도의 높은 용해도를 보였다. 네 가지 다른 함량의 VEA 함유 nano-emulsion을 이용하여 쥐 피부 Franz diffusion cell 실험을 수행한 결과 EtOH 함량이 10.0 wt%인 경우에 128.8 ${\mu}g/cm^2$으로 VEA가 가장 높게 검출되었다. 이것은 초기 VEA 투입량인 220.057 ${\mu}g/cm^2$과 비교하여 58.53 %가 투과된 것으로 EtOH 함량이 1.0, 20.0 wt%인 에멀젼과 비교해 볼 때 각각 45 %, 15 %씩 높았다. 동일한 EtOH 농도로 제조한 에멀젼과 비교했을 때, 0.5 wt% 계면활성제를 사용한 에멀젼의 입자 크기는 계면활성제 0.007 wt% 에멀젼 입자 크기의 1/20 정도인 26.0 nm로 매우 작았다. 하지만 쥐 피부를 투과하는 VEA의 양은 54.848 ${\mu}g/cm^2$ 로 128.8 ${\mu}g/cm^2$ 의 투과량을 보인 0.007 wt% 계면활성제 함유 에멀젼보다 적었다. 이상의 결과들로 VEA를 함유한 nano-emulsion의 피부 투과도와 receptor phase 조성에 따른 VEA의 용해도 차이를 확인하였다. 이러한 결과들을 이용하여 VEA를 피부 내로 침투시키는 데 필요한 최적의 조건을 확립할 수 있을 것으로 사료된다.

농촌 지역 중소병원의 가정간호사업소 등록환자의 방문비용분석 (Cost Analysis of Home Nursing Care Patients in Rural Hospital)

  • 김진순;금란;황보수자
    • 농촌의학ㆍ지역보건
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    • 제24권1호
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    • pp.91-101
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    • 1999
  • 장 노년층 인구증가에 따른 건강문제의 다양화, 주민의 건강 요구증가에 부응하기 위해서는 기존의 의료기관 중심의 진료서비스 만으로는 새로운 건강문제를 충분히 해결할 수 없으므로 새로운 보건의료 제공 체계가 도입 되기에 이르렀다. 이미 선진국에서는 오랜 역사를 갖고 있는 가정간호사제도가 우리 나라에서도 입법화되어 1994년부터 병원중심의 가정간호사업이 시범적으로 운영되고 있다. 본 연구는 농촌지역의 중소병원에서 실시하고있는 가정간호사업소에 등록되어 있는 환자의 방문비용을 분석하는 것을 목적으로 실시되었으며, 1996년 5월 - 1997년 4월(1년간)까지 등록된 102명의 진료기록부를 분석하였다. 자료 분석 방법은 수준을 파악하기 위하여 평균과 분포로 분석하였으며 변수간의 차이점 등은 t - test와 ANOVA로 분석하였다. 분석 결과는 다음과 같다. 첫째, 등록환자의 일반적 특성은 남자가 44.1%, 여자가 55.9%로서 여자가 높았으며 연령은 60세 이상이 73.5%로서 노인 환자가 많았다. 둘째, 골다공증이 등록환자의 35.3%로서 제일 높았으며 각종 암이 21.6%, 뇌졸중이 14.7%로 나타나 연령과 관계가 깊은 것으로 나타났다. 질환특성은 복합질환, 즉 한가지 이상의 증상, 혹은 질환을 함께 갖고있는 경우가 73.5%로서 단순질환 26.5% 보다 높았다. 셋째, 남자 환자의 방문당 평균비용이 47,764원으로서 여자 환자의 46,078원 보다 높았다. 연령별로는 연령이 높아질수록 방문당 평균비용이 높은 것으로 나타났다. 성별과 연령별 비용은 통계학적으로 유의한 차이가 있는 것으로 나타났다. 넷째, 질환 특성별 비용은 단순질환이 복합 질환보다 방문당비용이 약간 높았으나 통계학적으로 유의한 차이가 없었으며, 질환별로는 COPD, 각종 암, 당뇨, 골다공증의 순으로 방문비용이 높게 나타났다. 다섯째, 가정간호의 방문비용이 질환으로 병원에서 치료받을 경우 보다 적게 나타나 비용효율이 있는 것으로 나타났다. 본 연구 결과는 제한된 자료를 분석한 것이므로 결과를 일반화시키는데 신중을 기할 필요가 있다. 그러나 가정간호사제도가 향후 정착되기 위해서는 가정간호 대상질환의 선정, 서비스내용 및 질, 비용효율 및 효과에 대한 평가가 계속 실시될 것을 제안한다.

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THE CURRENT STATUS OF BIOMEDICAL ENGINEERING IN THE USA

  • Webster, John G.
    • 대한의용생체공학회:학술대회논문집
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    • 대한의용생체공학회 1992년도 춘계학술대회
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    • pp.27-47
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    • 1992
  • Engineers have developed new instruments that aid in diagnosis and therapy Ultrasonic imaging has provided a nondamaging method of imaging internal organs. A complex transducer emits ultrasonic waves at many angles and reconstructs a map of internal anatomy and also velocities of blood in vessels. Fast computed tomography permits reconstruction of the 3-dimensional anatomy and perfusion of the heart at 20-Hz rates. Positron emission tomography uses certain isotopes that produce positrons that react with electrons to simultaneously emit two gamma rays in opposite directions. It locates the region of origin by using a ring of discrete scintillation detectors, each in electronic coincidence with an opposing detector. In magnetic resonance imaging, the patient is placed in a very strong magnetic field. The precessing of the hydrogen atoms is perturbed by an interrogating field to yield two-dimensional images of soft tissue having exceptional clarity. As an alternative to radiology image processing, film archiving, and retrieval, picture archiving and communication systems (PACS) are being implemented. Images from computed radiography, magnetic resonance imaging (MRI), nuclear medicine, and ultrasound are digitized, transmitted, and stored in computers for retrieval at distributed work stations. In electrical impedance tomography, electrodes are placed around the thorax. 50-kHz current is injected between two electrodes and voltages are measured on all other electrodes. A computer processes the data to yield an image of the resistivity of a 2-dimensional slice of the thorax. During fetal monitoring, a corkscrew electrode is screwed into the fetal scalp to measure the fetal electrocardiogram. Correlations with uterine contractions yield information on the status of the fetus during delivery To measure cardiac output by thermodilution, cold saline is injected into the right atrium. A thermistor in the right pulmonary artery yields temperature measurements, from which we can calculate cardiac output. In impedance cardiography, we measure the changes in electrical impedance as the heart ejects blood into the arteries. Motion artifacts are large, so signal averaging is useful during monitoring. An intraarterial blood gas monitoring system permits monitoring in real time. Light is sent down optical fibers inserted into the radial artery, where it is absorbed by dyes, which reemit the light at a different wavelength. The emitted light travels up optical fibers where an external instrument determines O2, CO2, and pH. Therapeutic devices include the electrosurgical unit. A high-frequency electric arc is drawn between the knife and the tissue. The arc cuts and the heat coagulates, thus preventing blood loss. Hyperthermia has demonstrated antitumor effects in patients in whom all conventional modes of therapy have failed. Methods of raising tumor temperature include focused ultrasound, radio-frequency power through needles, or microwaves. When the heart stops pumping, we use the defibrillator to restore normal pumping. A brief, high-current pulse through the heart synchronizes all cardiac fibers to restore normal rhythm. When the cardiac rhythm is too slow, we implant the cardiac pacemaker. An electrode within the heart stimulates the cardiac muscle to contract at the normal rate. When the cardiac valves are narrowed or leak, we implant an artificial valve. Silicone rubber and Teflon are used for biocompatibility. Artificial hearts powered by pneumatic hoses have been implanted in humans. However, the quality of life gradually degrades, and death ensues. When kidney stones develop, lithotripsy is used. A spark creates a pressure wave, which is focused on the stone and fragments it. The pieces pass out normally. When kidneys fail, the blood is cleansed during hemodialysis. Urea passes through a porous membrane to a dialysate bath to lower its concentration in the blood. The blind are able to read by scanning the Optacon with their fingertips. A camera scans letters and converts them to an array of vibrating pins. The deaf are able to hear using a cochlear implant. A microphone detects sound and divides it into frequency bands. 22 electrodes within the cochlea stimulate the acoustic the acoustic nerve to provide sound patterns. For those who have lost muscle function in the limbs, researchers are implanting electrodes to stimulate the muscle. Sensors in the legs and arms feed back signals to a computer that coordinates the stimulators to provide limb motion. For those with high spinal cord injury, a puff and sip switch can control a computer and permit the disabled person operate the computer and communicate with the outside world.

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젖소 유방염 관리에 따른 세균 및 체세포수 등급 실태 조사 분석 (Analytical studies of bovine mastitis management by standard plate counts(SPC) and somatic cell counts(SCC))

  • 허정호;정명호;박영호;조명희;이주홍
    • 한국동물위생학회지
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    • 제21권3호
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    • pp.285-300
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    • 1998
  • 1. The number of average milking cows, clinical forms of mastitis, mastitis-developing cows, and cows killed by mastitis a year were 25.7, 1.8(7%), 6.3(26%), and 2.7(10.1%)heads, respectively. The annual grade changes of standard plate counts(SPC) and somatic cell counts(SCC) showed the grade 1A of SPC diminished sharply from April to August, we think it was due to the lack of proper management in farming season and the grade 3 of SCC indirectly influenced increased in huge during August. 2. The average number of parturitions of farms was 2.3, but 50% of below 1 parturition were 22 farms(31%), 50% of above 3 parturitions were 16(23%) out of 71 farms. According to grades of the number of parturitions of milking cows per each farm, the farms' grades recording 3 parturitions and 50% were little bit excellent. 3. The actual situation research of foremilking CMT revealed 35 out of 74 farmer didn't do CMT Among them(35 out of 74 farmers), 80% did not test thanks to the troublesome process of the CMT. SCC grade 3, among farms who did foremilking CMT once or twice a month and who did not were 29% and 40% respectively and SPC grade 1A were 55% and 9%, respectively. 4. The research of actual situation on milking management let us know 29 farms(39%) did not do lastmilking, 37 farms(49%) usually did overmilking, and 34 farms(46%) did milking for 4 or 5 minutes. Grades according to average requiring times of milking showed SCC grade 1 of farms milking within 7 minutes was 11% and SPC grade 1A was 34%, on the other side, farms milking more than 7 minutes were 0% in SCC grade 1 and 13% in SPC grade 1A. Grades according to the starting time of milking after rubbing teats showed SPC grade 1A of farms starting milking at about 1 minute and over 2 minutes were 50% and 20%, respectively. 5. The research of actual situation on hygienic milking management uncovered 65 farms(88%) were using one towel which was used in washing teats and udders to wash more than 3 to 4 cows, and 53 farms(72%) were using one dried towel to dry udders not for each cow but for more than 3 to 4 cows after washing. Also, on milking turns disclosed 30 farms(40%) were milking cows in the order of incoming without isolation of a dominant group. According to grades of towels used in washing teats and udders, farms using a towel for each cow were 56% and a towel for over 3 cows were 31% in SPC grade 1A. According to using-or-not grades of dried towels after washing udders, farms using a towel for each cow were 79% and a towel for over 3 cows were 21% in SPC grade 1A. 6. Farms doing teat-dipping before milking were 7(10%), not doing teat-dipping after milking, or doing sometimes were 9(12%), and doing right after milking were 57(77%). And farms doing teat-dipping after dry cows and before delivery were 21(28a ). Farms using bethadine as an antiseptic solution were 70(95%), 40 farms(59%) diluted it with water as weak as 5 to 10 times, and on drying cows 64 farms(87%) slowly did it more than 2 days. Grade 1A of SPC of farms doing teat-dipping at every milking was 38%, farms doing occasionally or not was 33%, and farms doing it right after milking was 37% and doing after milking more than 5 cows was 20%. Grade 1A of SPC among farms diluting bethadine 5 times and diluting 5 to 10 times with water were 36% and 33%, respectively, and Grade 3 of SCC were 35% and 32%, respectively. 7. Studies on nonlactating period medical treatment, as the cows were on dry, 54 farms treated with their own hands.73 farms(98%) had bovine mastitis treated for themselves. And on applying medicines against mastitis, 55 farmers chose them on the basis of their own experience, 42 farms(57%) were treated more than 3 days. 41 farms(55%) dumped away the mastitis infected milk separately, 24 farms(32%) were feeding and milking at the same time. 8. Fifty-six farms(76%) always washed and disinfected milking machines after milking. Farms using the milking machines at low, or variable vacuum pressures, or at the vacuum pressure, set at the moment of its installation were 31(42%), and farms that did not know pulsation ratio were 27(37%). Farms changing liners when they were torn 8(11%), 58 farms(78%) said they checked milking system when there were wrong with them, 31 farms(42%) changed milking hoses when they found out problems, and 42 farms(57%) cleaned vacuum and milking systems when they felt dirty. The SPC grade 1A of farms washing and sterilizing milking machines was 38% and farms only washing was 28%.

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사회치위생학의 학습목표 제안: 구강보건행정 영역 (Suggestion of Learning Objectives in Social Dental Hygiene: Oral Health Administration Area)

  • 박수경;이가영;장영은;유상희;김연주;이수향;김한나;조혜원;김명희;김희경;류다영;김민지;신선정;김남희;윤미숙
    • 치위생과학회지
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    • 제18권2호
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    • pp.85-96
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    • 2018
  • 본 연구는 공중구강보건학 구강보건행정 영역의 국가시험 A항목 학습목표 48개의 '치위생 직무관련성', '치위생역량관련성', '교육목표 설정의 가치판별성', '시의성'을 검토하여, 최종으로 제안한 사회치위생학 구강보건행정 영역의 국가시험 A항목 학습목표는 총 75개였다. 전체 학습목표 중 18개를 삭제하였고, 15개를 수정보완하였으며, 기존 학습목표 15개를 유지하였고, 새로운 학습목표 45개를 추가하였다. 학습목표 주제는 I. 사회보장과 의료보장, II. 구강보건진료제도, III. 구강보건행정, IV. 구강보건정책으로 구분하여 고찰하였다. 최근 건강보험 및 노인장기요양보험의 확대 등 의료보장제도는 국가정책의 변화 등을 반영한 의료보장과 사회보장제도에 대한 내용을 제공할 수 있도록 수정보완이 필요하며 더 나아가 제도의 문제점과 해결방안을 제시할 수 있는 '옹호자'로서의 사회적 역할을 수행할 수 있도록 사회보장과 의료보장 분야의 학습목표를 개선할 것을 제안하였다. 구강보건진료제도와 구강보건행정 분야의 기존 학습목표는 치과위생사로서 현장의 직무와 관련성이 높은 개념과 내용으로 수정보완이 필요함을 제시하였고, 구강보건정책 분야는 치과위생사로서 정책에 참여하고 치위생 정책의제를 발굴할 수 있는 역량을 강화하여 변화주도자, 옹호자의 역할을 수행할 수 있도록 국내 보건의료정책, 치위생 관련 정책 이슈의 변화, 정책과정, 정책참여, 정책평가 등의 내용을 중점으로 학습목표를 신설할 것을 제안하였다. 본 연구결과, 변화하는 시대적 상황에 부응하여 사회치위생학 분야의 학습목표를 개정할 필요성이 제기되었다. 또한, 교육내용을 개편함에 있어 우선순위를 두어 개선하여야 한다는 것에 의견이 모아졌다. 첫째, 사회치위생학 학습목표를 개정하고, 실제 직무와 관련성이 높은 역량을 개발해야 할것이다. 둘째, 사회치위생학 학습내용은 지식, 태도, 행동을 향상시킬 수 있는 학습목표를 적극 개발해야 할 것이다. 셋째, 개정된 학습목표와 역량을 기준으로 사회치위생학 교재와 교육자료의 개발이 필요할 것이다. 넷째, 개정된 사회치위생학 학습목표를 바탕으로 치과위생사 국가시험을 개선해야 할 것이다. 이러한 교육의 변화를 통하여 치위생(학)계는 학습내용이 지식중심에서 그치는 것이 아니라 지식을 통해 다양한 활동으로 전환될 수 있도록 치과위생사의 역량을 강화하고, 치위생학 학문의 질적 수준을 향상시켜야 할 것이다. 따라서 사회에 진출 한 후 임상과 지역사회 현장에서 치과위생사로서 사회적 역할과 책임을 다할 수 있는 내실 있는 교육을 운영해야 할 것이다.

간호개념에 대한 기초조사 (The Empirical Exploration of the Conception on Nursing)

  • 백혜자
    • 대한간호학회지
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    • 제11권1호
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    • pp.65-87
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    • 1981
  • The study is aimed at exploring concept held by clinical nurses of nursing. The data were collected from 225 nurses conviniently selected from the population of nurses working in Kang Won province. Findings include. 1) Nurse's Qualification. The respondents view that specialized knowledge is more important qualification of the nurse. Than warm personality. Specifically, 92.9% of the respondents indicated specialized knowledge as the most important qualification while only 43.1% indicated warm personality. 2) On Nursing Profession. The respondents view that nursing profession as health service oriented rather than independent profession specifically. This suggests that nursing profession is not consistentic present health care delivery system nor support nurses working independently. 3) On Clients of Nursing Care The respondents include patients, family and the community residents in the category of nursing care. Specifically, 92.0% of the respondents view that patient is the client, while only 67.1% of nursing student and 74.7% of herself. This indicates the lack of the nurse's recognition toward their clients. 4) On the Priority of Nursing care. Most of the respondents view the clients physical psychological respects as important component of nursing care but not the spiritual ones. Specially, 96.0% of the respondents indicated the physical respects, 93% psychological ones, while 64.1% indicated the spiritual ones. This means the lack of comprehensive conception on nursing aimension. 5) On Nursing Care. 91.6% of the respondents indicated that nursing care is the activity decreasing pain or helping to recover illness, while only 66.2% indicated earring out the physicians medical orders. 6) On Purpose of Nursing Care. 89.8% of the respondents indicated preventing illness and than 76.6% of them decreasing 1;ai of clients. On the other hand, maintaining health has the lowest selection at the degree of 13.8%. This means the lack of nurses' recognition for maintaining health as the most important point. 7) On Knowledge Needed in Nursing Care. Most of the respondents view that the knowledge faced with the spot of nursing care is needed. Specially, 81.3% of the respondents indicated simple curing method and 75.1%, 73.3%, 71.6% each indicated child nursing, maternal nursing and controlling for the communicable disease. On the other hand, knowledge w hick has been neglected in the specialized courses of nursing education, that is, thinking line among com-w unity members, overcoming style against between stress and personal relation in each home, and administration, management have a low selection at the depree of 48.9%,41.875 and 41.3%. 8) On Nursing Idea. The highest degree of selection is that they know themselves rightly, (The mean score measuring distribution was 4.205/5) In the lowest degree,3.016/5 is that devotion is the essential element of nursing, 2.860/5 the religious problems that human beings can not settle, such as a fatal ones, 2,810/5 the nursing profession is worth trying in one's life. This means that the peculiarly essential ideas on the professional sense of value. 9) On Nursing Services. The mean score measuring distribution for the nursing services showed that the inserting of machine air way is 2.132/5, the technique and knowledge for surviving heart-lung resuscitating is 2.892/s, and the preventing air pollution 3.021/5. Specially, 41.1% of the respondents indicated the lack of the replied ratio. 10) On Nurses' Qualifications. The respondents were selected five items as the most important qualifications. Specially, 17.4% of the respondents indicated specialized knowledge, 15.3% the nurses' health, 10.6% satisfaction for nursing profession, 9.8% the experience need, 9.2% comprehension and cooperation, while warm personality as nursing qualifications have a tendency of being lighted. 11) On the Priority of Nursing Care The respondents were selected three items as the most important component. Most of the respondents view the client's physical, spiritual: economic points as important components of nursing care. They showed each 36.8%, 27.6%, 13.8% while educational ones showed 1.8%. 12) On Purpose of Nursing Care. The respondents were selected four items as the most important purpose. Specially,29.3% of the respondents indicated curing illness for clients, 21.3% preventing illness for client 17.4% decreasing pain, 15.3% surviving. 13) On the Analysis of Important Nursing Care Ranging from 5 point to 25 point, the nurses' qualification are concentrated at the degree of 95.1%. Ranging from 3 point to 25, the priorities of nursing care are concentrated at the degree of 96.4%. Ranging from 4 point to 16, the purpose of nursing care is concentrated at the degree of 84.0%. 14) The Analysis, of General Characteristics and Facts of Nursing Concept. The correlation between the educational high level and nursing care showed significance. (P < 0.0262). The correction between the educational low level and purpose of nursing care showed significance. (P < 0.002) The correlation between nurses' working yeras and the degree of importance for the purpose of nursing care showed significance (P < 0.0155) Specially, the most affirmative answers were showed from two years to four ones. 15) On Nunes' qualification and its Degree of Importance The correlation between nurses' qualification and its degree of importance showed significance. (r = 0.2172, p< 0.001) 0.005) B. General characteristics of the subjects The mean age of the subject was 39 ; with 38.6% with in the age range of 20-29 ; 52.6% were male; 57.9% were Schizophrenia; 35.1% were graduated from high school or high school dropouts; 56.l% were not have any religion; 52.6% were unmarried; 47.4% were first admission; 91.2% were involuntary admission patients. C. Measurement of anxiety variables. 1. Measurement tools of affective anxiety in this study demonstrated high reliability (.854). 2. Measurement tools of somatic anxiety in this study demonstrated high reliability (.920). D. Relationship between the anxiety variables and the general characteristics. 1. Relationship between affective anxiety and general characteristics. 1) The level of female patients were higher than that of the male patient (t = 5.41, p < 0.05). 2) Frequencies of admission were related to affective anxiety, so in the first admission the anxiety level was the highest. (F = 5.50, p < 0.005). 2, Relationship between somatic anxiety and general characteristics. 1) The age range of 30-39 was found to have the highest level of the somatic anxiety. (F = 3.95, p < 0.005). 2) Frequencies of admission were related to the somatic anxiety, so .in first admission the anxiety level was the highest. (F = 9.12, p < 0.005) 0. Analysis of significant anxiety symptoms for nursing intervention. 1. Seven items such as dizziness, mental integration, sweating, restlessness, anxiousness, urinary frequency and insomnia, init. accounted for 96% of the variation within the first 24 hours after admission. 2. Seven items such as fear, paresthesias, restlessness, sweating insomnia, init., tremors and body aches and pains accounted for 84% of the variation on the 10th day after admission.

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