• 제목/요약/키워드: cerebrovascular

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Cerebral Hemodynamics in Premature Infants

  • Rhee, Christopher J.;Rios, Danielle R.;Kaiser, Jeffrey R.;Brady, Ken
    • Neonatal Medicine
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    • 제25권1호
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    • pp.1-6
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    • 2018
  • Extremely low birth weight infants remain at increased risk of intraventricular hemorrhage from the fragile vascular bed of the germinal matrix; the roles of hypotension (ischemia) and reperfusion (hyperemia) in the development of intraventricular hemorrhage are still debated. Cerebrovascular pressure autoregulation protects the brain by maintaining constant cerebral blood flow despite changes in blood pressure. The ontogeny of cerebrovascular pressure autoregulation has not been well established and uncertainty remains about the optimal arterial blood pressure required to support brain perfusion. Another important aspect of premature cerebral hemodynamics is the critical closing pressure--the arterial blood pressure at which cerebral blood flow ceases. Interestingly, in premature infants, the critical closing pressure approximates the mean arterial blood pressure. Often in this unique population, cerebral blood flow occurs only during systole when the diastolic arterial blood pressure is equal to the critical closing pressure. Moreover, the diastolic closing margin, a metric of cerebral perfusion that normalizes diastolic arterial blood pressure to the critical closing pressure, may be a better measure than arterial blood pressure for defining cerebral perfusion in premature infants. Elevated diastolic closing margin has been associated with intraventricular hemorrhage. This review summarizes the current state of understanding of cerebral hemodynamics in premature infants.

뇌졸중 이후의 교합관계의 변화 증례 (CHANGES OF DENTAL OCCLUSION AFTER STROKE: CASE REPORT)

  • 이성종;이은영;김혜정;황지영;이제호
    • 대한장애인치과학회지
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    • 제4권1호
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    • pp.26-31
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    • 2008
  • Cerebrovascular Accident(stroke) is that a sudden, nonconvulsive loss of neurologic function due to an ischemic or hemorrhagic intracranial vascular event. If stroke happens at the portion of trigeminal motor nucleus or its control part of cerebral cortex, masticatory muscles will be atrophy or paralyzed. So it is possible that dental occlusion changes after stroke. A 74-aged woman recurred mild stroke 2 month ago, who had experienced severe stroke 2 years ago. After recurrence, suddenly her upper full denture was dropped when lower denture contacted upper one. According to the her occlusion exam, her lower jaw moved back slightly compared with the occlusion of old denture. And her face had asymmetry and lower jaw dislocated to paralyzed side. A 50-aged man was treated because many cervical caries, which would occur because of an aftereffect of stroke, long-herm hospitalization and limits of self oral-care. 6 years ago he had cerebral hemorrhage and he claimed that he cannot bite exactly. Just two pairs of teeth was contact on biting, his lower jaw was located back, too. This two case suggests that dental occlusion can change after stroke.

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재택진료 잠재적 이용자의 혈압 수준에 따른 뇌혈관 질환 위험요인 분포 (Risk Factors of Cerebrovascular Disease According to the Level of Blood Pressure among the Prospective Tele-medicine Users)

  • 송희영;박소미;황성오
    • Journal of Korean Biological Nursing Science
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    • 제6권2호
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    • pp.31-42
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    • 2004
  • Purpose: This study was undertaken to investigate bio-medical and behavioral risk factor of stroke according to the level of blood pressure among the prospective tele-health users. Method: A descriptive study was conducted using interviews with a structured questionnaire. Of the households in the village, 24 households were selected for inclusion in the study. Among all of the residents from these households, a total of 48 residents who completed all the blood tests as well as the questionnaire. Results: Among bio-medical risk factors including demographic characteristics, physiologic variables, and health history, only triglyceride(TG) was significantly different among normal, prehypertension, and hypertension groups(F=3.78, p<.05). However, regarding behavioral variables, those who were classified as prehypertension and hypertension group reported more frequent drinking, those who were in prehypertension group reported highest scores of stress and lowest frequency of exercise, and those who were in normal and hypertension group showed higher scores of interest on health and lower scores of perceived seriousness of disease and health knowledge than those who were in prehypertension group. Conclusion: Identification and implementation of modifiable risk factors of stroke according to the level of blood pressure are crucial for health care utilizing tele-medicine.

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뇌혈관질환에서 $^{99m}Tc-HMPAO$ SPECT를 이용한 국소뇌혈류의 정량적 분석 (Quantitative Analysis of Regional Cerebral Blood Flow Using $^{99m}Tc-HMPAO$ SPECT in Cerebrovascular Disease)

  • 이명철;이명혜;고창순;노재규;명호진;이선호;한대희
    • 대한핵의학회지
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    • 제22권1호
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    • pp.15-19
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    • 1988
  • SPECT of regional cerebral blood flow was performed using $^{99m}Tc-HMPAO$ in 28 patients with cerebrovascular disease and quantitative analysis was done. Cerebral asymmetry index and percent index of asymmetry of cerebellar hemisphere of patients with cerebral infarction or ischemia were $0.764{\pm}0.576$ and $-5.6{\pm}7.1%$ and those of intracranial hemorrhage was $0.416{\pm}0.251$ and $-2.5{\pm}4.1%$ respectively. According to PIA of cerebellar hemisphere, 12 patients showed crossed cerebellar diaschisis. $^{99m}Tc-HMPAO$ SPECT seemed to be a useful tool for the evaluation of regional cerebral blood flow.

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Canonical Transient Receptor Potential Channels and Their Link with Cardio/Cerebro-Vascular Diseases

  • Xiao, Xiong;Liu, Hui-Xia;Shen, Kuo;Cao, Wei;Li, Xiao-Qiang
    • Biomolecules & Therapeutics
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    • 제25권5호
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    • pp.471-481
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    • 2017
  • The canonical transient receptor potential channels (TRPCs) constitute a series of nonselective cation channels with variable degrees of $Ca^{2+}$ selectivity. TRPCs consist of seven mammalian members, TRPC1, TRPC2, TRPC3, TRPC4, TRPC5, TRPC6, and TRPC7, which are further divided into four subtypes, TRPC1, TRPC2, TRPC4/5, and TRPC3/6/7. These channels take charge of various essential cell functions such as contraction, relaxation, proliferation, and dysfunction. This review, organized into seven main sections, will provide an overview of current knowledge about the underlying pathogenesis of TRPCs in cardio/cerebro-vascular diseases, including hypertension, pulmonary arterial hypertension, cardiac hypertrophy, atherosclerosis, arrhythmia, and cerebrovascular ischemia reperfusion injury. Collectively, TRPCs could become a group of drug targets with important physiological functions for the therapy of human cardio/cerebro-vascular diseases.

중증질환자 삶의 질에 영향을 미치는 요인 : 제6기 국민건강영양조사 이용 (Factors Influencing Quality of Life in a Serious Case : the sixth Korea National Health and Nutrition Examination Survey)

  • 김석환;김미주
    • 한국학교ㆍ지역보건교육학회지
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    • 제19권1호
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    • pp.13-25
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    • 2018
  • Objectives: The purpose of this study was to identify the quality of life of a serious case and to analyze the factors influencing them. A serious disease were limited to cancer, cerebrovascular disease, and cardiovascular disease. Methods: This study used original data from the 6th National Health and Nutrition Survey (2013~2015) and finally extracted 385 persons diagnosed with cancer, cerebrovascular disease and cardiovascular disease among adults over 20 years old. Linear logistic regression analysis was conducted to identify factors affecting the quality of life of this study subjects. Results: The quality of life scores of the subjects were $13.92{\pm}1.54$ points (Highest possible=15). Regression analysis showed that quality of life decreased as age increased, lower income level, lower education level, stress, depression, suicidal ideation. The explanatory power (R2) of the analysis model was 0.170. Conclusions: The results of this study showed that age, income level, education level, stress, depression, and suicidal ideation affect the quality of life of a serious case in the community.

소아(小兒) 중풍(中風) 환자(患者) 2례(例)에 대(對)한 증례(證例) (Two Cases of Stroke in Childhood)

  • 이진용;김덕곤;신동길
    • 대한한방소아과학회지
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    • 제17권1호
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    • pp.87-97
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    • 2003
  • Cerebrovascular disease in children is more common than once recognized and the etiology and prognosis of the disease in children are quite different from those of adults. In Korea, the most common cause of stroke is moyamoya disease in ischemic stroke, arteriovenous malformation in hemorrhagic stroke. We experienced two cases of ischemic stroke in childhood whose symptoms are similar to that of adults. They had cerebrovascular malformation(narrowing of ICA, MCA, basilar artery). we treated them with herb medicine, acupuncture treatment, laser acupuncture treatment and physical treatment. After treatment, they recovered from the stroke symptoms, but the primary cause of stroke was not eliminated, so it is thought that more follow up is needed. We report that we had good effects of oriental medical treatment on two case of cerebral infarction in children.

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Single Nucleotide Polymorphism in Patients with Moyamoya Disease

  • Park, Young Seok
    • Journal of Korean Neurosurgical Society
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    • 제57권6호
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    • pp.422-427
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    • 2015
  • Moyamoya disease (MMD) is a chronic, progressive, cerebrovascular occlusive disorder that displays various clinical features and results in cerebral infarct or hemorrhagic stroke. Specific genes associated with the disease have not yet been identified, making identification of at-risk patients difficult before clinical manifestation. Familial MMD is not uncommon, with as many as 15% of MMD patients having a family history of the disease, suggesting a genetic etiology. Studies of single nucleotide polymorphisms (SNPs) in MMD have mostly focused on mechanical stress on vessels, endothelium, and the relationship to atherosclerosis. In this review, we discuss SNPs studies targeting the genetic etiology of MMD. Genetic analyses in familial MMD and genome-wide association studies represent promising strategies for elucidating the pathophysiology of this condition. This review also discusses future research directions, not only to offer new insights into the origin of MMD, but also to enhance our understanding of the genetic aspects of MMD. There have been several SNP studies of MMD. Current SNP studies suggest a genetic contribution to MMD, but further reliable and replicable data are needed. A large cohort or family-based design would be important. Modern SNP studies of MMD depend on novel genetic, experimental, and database methods that will hopefully hasten the arrival of a consensus conclusion.

가정간호서비스의 비용효과분석;뇌혈관질환자를 중심으로 (Cost-Effectiveness Analysis of Home Care Service for Cerebrovascular Disease Patients)

  • 임지영;박영주
    • 간호행정학회지
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    • 제8권2호
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    • pp.323-334
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    • 2002
  • Purpose: This study was designed to analyse economical efficiency of home care service by comparing a cost-effectiveness ratio(CER) between hospitalization and home care service. Method: The analytic framework of this study was constructed in 5 stages; perspective of the analysis, measurement of costs, measurement of effects, analysis of CER, and sensitivity analysis. The SAS program was utilized for the general characteristics of the subjects, descriptive statistics, homogeneous test, normality test and difference test. Result: The results were as follows; 1) CER was 35,248,256 of ADL, 7,996,026 of nursing satisfaction, 6,144,946,000 of QALY of patients in the hospital and 11,168,863 of ADL, 2,322,239 of nursing satisfaction, 3,674,556,000 of QALY of patients in the home care center. ICER was 438,067,932 of ADL, -190,044,176 of nursing satisfaction, 8,615,336,000 of QALY. 2) In the sensitivity analysis of sex, age and discount rate, the CER of patients in the home care center was lower than the CER of patients in the hospital. Conclusion: With these findings, it affirmed that home care service had an economical efficiency compared with hospitalization in cerebrovascular disease patients. Therefore, these results will be used to develop governmental policy or expansion of the home care service.

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거동불편 노인의 가족관계와 의.식생활에 관한 연구 -(제3보) 뇌졸중 경험 노인의 식생활과 영양상태- (Studies on Family Caregiving, Clothing and Nutrition of Disabled Elderly -(Part 3) Food Behavior and Nutrition of Elderly with Cerebrovascular Disease-)

  • 박명희
    • 대한가정학회지
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    • 제29권3호
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    • pp.85-98
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    • 1991
  • To investigate dietary habits and health and nutritional status of the elderly with cerebrovascular disease(CVD), 31 hospitalized patients and 28 old people who had experienced stroke and were living at home were interviewed for the dietary habits and drinking and smoking habits. Their blood pressure and triceps skinfold thickness were measured and biochemical assessment of blood samples were conducted. The results were compared with those from 30 healthy elderly. Ca Index reflecting ca intake and intake of dietary fiber were significantly lower in the patient elderly groups than in the healthy elderly. Cholesterol intakes were not significantly different among the groups. Although salt intakes were almost similar among the groups, patient elderly tended to like salty taste as compared to the healthy elderly. Systolic and diastolic blood pressures of the patient elderly were significantly higher than those of the healthy elderly. Triceps skinfold thickness and serum total protein and albumin were significantly lower in patient groups than the healthy elderly. Serum cholesterol and hemoglobin concentrations were not different among groups. Among the above variables only Ca index was inversely correlated with blood pressure significantly.

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