• Title/Summary/Keyword: cardiovascular response

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Design and Implementation of Electrocardiogram Data Interpretation system using AdaBoost Algorithm (AdaBoost 알고리즘을 이용한 심전도 정보 판독 시스템의 설계 및 구현)

  • Lim, Myung-Jae;Hong, Jin-Kyoung;Kim, Kyu-Ho;Choi, Mi-Lim
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.10 no.2
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    • pp.129-134
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    • 2010
  • Diseases such as cardiovascular illnesses, according to the National Statistical Office opened reveals that 600-800 people were killed, blood pressure, arteriosclerosis, heart disease, stroke, etc. will be a flow of blood disorders that occur in cardiovascular illnesses today are fulfilling the Master / Slave samangryulin disease appears high. Died of cardiovascular disease also told them the correct first aid survival when patients are accounted for approximately 40% of emergency rapid response is required. Therefore, this paper, the weak classifier in the AdaBoost algorithm to generate a strong classifier by combining effects throughout the analysis to measure the ECG, and cardiovascular disease that occurred to you as soon as the emergency management system that can deliver on the proposed Desk was. The electrocardiogram data measured by the ZigBee-based sensors, communication devices and emergency transport for emergency alarms in the determination and monitoring of the management desk by providing health services to enable the delivery was fast.

Cardiovascular beriberi: rare cause of reversible pulmonary hypertension

  • Song, Joon Hyuk;Cheon, Sang Soo;Bae, Myung Hwan;Lee, Jang Hoon;Yang, Dong Heon;Park, Hun Sik;Cho, Yongkeun;Chae, Shung Chull
    • Journal of Yeungnam Medical Science
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    • v.31 no.1
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    • pp.38-42
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    • 2014
  • Cardiovascular beriberi is caused by thiamine deficiency and usually presents as high cardiac output failure associated with predominantly right-sided heart failure and rapid recovery after treatment with thiamine. Because of its rarity in developed countries, the diagnosis can often be delayed and missed. We recently experienced a case of cardiovascular beriberi with pulmonary hypertension which successfully treated with thiamine infusion. A 50-year-old man with chronic heavy alcoholics was refered to our department for dyspnea with mental change. Echocardiography showed marked right ventricular (RV) dilatation and flattening of the interventricular septum with a D-shaped deformation of the left ventricle. Moderate tricuspid valve regurgitation was found and estimated RV systolic pressure was 52 mm Hg. Because of his confused mentality and history of chronic alcohol intake, neurological disorder due to thiamine deficiency was suspected and intravenous thiamine was administered and he continuously received a daily dose of 100 mg of thiamine. Follow up echocardiography showed marked reduction of RV dilatation and improvement of a D-shaped deformation of the left ventricle. He finally diagnosed as cardiovascular beriberi on the basis of dramatic response to intravenous thiamine. Thiamine deficiency can cause reversible pulmonary hypertension, and can still be encountered in the clinical setting. Thus high index of suspicion is critically needed for diagnosis.

Guidelines for Cardiovascular Magnetic Resonance Imaging from the Korean Society of Cardiovascular Imaging (KOSCI) - Part 2: Interpretation of Cine, Flow, and Angiography Data

  • Lee, Jae Wook;Hur, Jee Hye;Yang, Dong Hyun;Lee, Bae Young;Im, Dong Jin;Hong, Su Jin;Kim, Eun Young;Park, Eun-Ah;Jo, Yeseul;Kim, Jeong Jae;Park, Chul Hwan;Yong, Hwan Seok
    • Investigative Magnetic Resonance Imaging
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    • v.23 no.4
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    • pp.316-327
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    • 2019
  • Cardiovascular magnetic resonance imaging (CMR) is expected to be increasingly used in Korea due to technology advances and the expanded national insurance coverage of these tests. For improved patient care, it is crucial not only that CMR images are properly acquired but that they are accurately interpreted by well-trained personnel. In response to the increased demand for CMR, the Korean Society of Cardiovascular Imaging (KOSCI) has issued interpretation guidelines in conjunction with the Korean Society of Radiology (KSR). KOSCI has also created a formal Committee on CMR Guidelines to write updated practices. The members of this Committee review previously published interpretation guidelines and discuss the patterns of CMR use in Korea.

A Study on the Relationship between Color and Cardiovascular Parameters (색채 감성에 대한 심혈관 변수 관계성에 대한 연구)

  • Cho, Ayoung;Woo, Jincheol;Lee, Hyunwoo;Jo, Youngho;Whang, Mincheol
    • Science of Emotion and Sensibility
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    • v.20 no.4
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    • pp.127-134
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    • 2017
  • Color is a significant factor for evoking human emotion. Therefore, the effects of color have been analyzed to predict and evaluate human emotion. The purpose of this study was to measure the cardiovascular responses depending on color stimuli in order to observe differences in color-emotions. Images consisting of six colors (red, green, blue, cyan, magenta, yellow) were used as visual stimuli. 26 college or graduate students (13 males) watched the color stimuli on the monitor and scored their subjective emotion while electrocardiogram (ECG) was meausred. The effects of the color on emotion were tested using Kruskal-Wallis test and Mann-Whitney U test. The coherence ratio showed significant differences between green and magenta (p = .004), green and red (p = .006), and green and yellow (p = .004). The significant differences of cardiovascular and emotions were relevant to emotional valence. This study shows significance as an empirical study by indicating that green induces pleasant and red induces unpleasant.

Fentanyl versus Remifentanil for Cough Suppression and Recovery after Video-Assisted Thoracic Surgery

  • Son, Hee Won;Lee, Ji Min;Park, Se Hun;Lee, Yong Jic;Oh, Ji Mi;Hwang, Su Kyung
    • Journal of Chest Surgery
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    • v.54 no.3
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    • pp.200-205
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    • 2021
  • Background: Various methods have been used to reduce postoperative pain after thoracic surgery. However, these methods may affect the patient's respiratory response and delay recovery from anesthesia. We aimed to evaluate the effects of fentanyl and remifentanil during extubation after video-assisted thoracic surgery (VATS). Methods: This study included 45 randomly-selected male patients who underwent VATS for pneumothorax between July 2011 and August 2012. We divided the participants into 3 groups: the F group, which received a bolus injection of 1.0 ㎍/kg of fentanyl; the R1 group, which received a 0.04 ㎍/kg/min remifentanil infusion; and the R2 group, which received a 0.08 ㎍/kg/min remifentanil infusion. Hemodynamics, pain, cough, consciousness level, and nausea were assessed for each group. Results: The number and severity of coughs were lower in the R1 and R2 groups than in the F group, and there were no differences between the R1 and R2 groups. Respiratory depression and loss of consciousness were not observed in any of the patients, and there were no differences in hemodynamics. Conclusion: In comparison with fentanyl, remifentanil did not result in a wide fluctuation of blood pressure and heart rate upon emergence from general anesthesia. Moreover, remifentanil contributed to cough suppression and postoperative pain control. Remifentanil seems to be a safe and effective analgesic after VATS.

Nelumbo nucifera Leaves Inhibit HASMC Proliferation and Migration Activated by TNF-$\alpha$ (Human Aortic Smooth Muscle Cell에서 하엽(荷葉)의 항동맥경화 활성 연구)

  • Kim, Sun-Mo;Yun, Hyun-Jeong;Yi, Hyo-Seung;Won, Chan-Wook;Kim, Jai-Eun;Park, Sun-Dong
    • The Korea Journal of Herbology
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    • v.24 no.4
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    • pp.77-86
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    • 2009
  • Objectives : The proliferation and migration of human aortic smooth muscle cells (HASMC) in response to activation by various stimuli plays a critical role in the initiation and development of atherosclerosis. This study was conducted to examine the effects of Nelumbo nucifera leaves (NNL) on the proliferation and migration of HASMC. Additionally, the mechanisms involved in any observed effects were also evaluated. Methods : Apoptotic cells were measured by staining with FITC-labeled annexin V, followed by flow cytometric analysis. The expression level of apoptosis related proteins was confirmed by western blot. And MMP-9 activity was measured by gelatin zymography and MMP-9 expression was measured by ELISA Results : NNL completely inhibited the proliferation of HASMC via induction of the expression of apoptotic proteins including annexin V, cleaved poly ADP-ribose polymerase (PARP), and caspase-3 and -8. NNL treatment resulted in the release of cytochrome c into cytosol, a loss of mitochondrial membrane potential, a decrease in Bcl-2 and Bcl-xL and an increase in Bax expression. NNL also blocked HASMC migration via suppression of MMP-9. Conclusions : Taken together, these results indicate that NNL has the potential for use as an anti-artherosclerosis agent.

Case Report of Yukmijihwang-tang(Liuweidihuang-fang) on Diabetes Mellitus in Stroke Patients Diagnosed as Kidney-Yin Deficiency or Non Kidney-Yin Deficiency Syndrome (신음허(腎陰虛)로 변증(辨證)된 중풍환자(中風患者)와 신음허(腎陰虛)로 변증(辨證)되지 않은 중풍환자(中風患者)의 당뇨(糖尿)에 대한 육미지황탕(六味地黄湯)의 치험례(治驗例))

  • Jung, Woo Sang;Moon, Sang Kwan;Cho, Ki Ho;Kim, Young Suk
    • The Journal of the Society of Stroke on Korean Medicine
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    • v.11 no.1
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    • pp.82-88
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    • 2010
  • Because syndrome-differentiation is one of the major characteristics in oriental medicine, there would be a possibility that the same herbal medicine show different effects on the same disease, if syndrome differentiation is ignored. In this report, we observed different response of Yukmijihwang-tang in diabetic stroke patients according to their syndrome differentiation. One case diagnosed as 'Kidney-yin deficiency syndrome' showed remarkable improvement on diabetes mellitus, whereas the serum glucose levels of the other 4 cases diagnosed as 'non Kidney-yin deficiency syndrome' were lowered little. These results are in accordance with the oriental medical theory that Yukmijihwang-tang can treat 'Kidney-yin deficiency syndrome'. Therefore, we suggest that subsequent clinical trials on oriental medicine would have to include the concept of differentiation of syndromes in order to take out the merit of oriental medicine.

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Heart rate recovery as a critical determinant in weightlifting (역도선수의 경기력 결정요인으로서 심박수 회복에 관한 연구)

  • Dong-Joo Hwang;Jung-Hoon Koo;Tae-Kyung Kim;Yong-Chul Jang;Joon-Yong Cho
    • Journal of the Korean Applied Science and Technology
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    • v.40 no.6
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    • pp.1340-1349
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    • 2023
  • Despite its profound impact on athletic performance, the significance of heart rate recovery (HRR) has been insufficiently addressed in the filed of sports science, particularly in the context of weightlifting characterized by brief and intense exertions involving heavy weights. Serving as a valuable indicator of autonomic nervous system and cardiovascular function, HRR assumes a pivotal role in weightlifting. This comprehensive review aims to delineate the specific demands for HRR in weightlifting, shedding light on the often overlooked cardiovascular considerations within training regimes focused on strength and power. The investigation scrutinizes the repercussions of HRR on weightlifting performance, seeking to elucidate how inadequate recovery intervals may result in physiological and psychological consequences. These consequences encompass a distorted perception of effort, disruption of coordination, compromised posture due to irregular breathing, and an overall decline in lifting capacity. The review systematically presents compelling evidence pertaining to heart rate response and recovery patterns during weightlifting, underscoring the critical importance of well-structured rest periods. Furthermore, the review delves into a comprehensive discussion of factors influencing HRR in weightlifting, encompassing variables such as sex, age, cardiovascular function, hydration, nutrition, and psychological aspects. Finally, a key emphasis is placed on the integration of effective HRR techniques into the training regimens of weightlifters, thereby ensuring sustained and optimized performance outcomes.

Loss of estrogen responsiveness under hypoxia occurs through hypoxia inducible factor-l induced proteasome-dependent down regulation of estrogen receptor

  • Cho, Jung-Yoon;Kim, Duk-Kyung;Lee, Young-Joo
    • Proceedings of the Korean Society of Applied Pharmacology
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    • 2003.11a
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    • pp.70-70
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    • 2003
  • Estrogen receptor is a ligand-activated transcription factor. Its action depends on the receptor, its ligand, and its coactivator proteins. As a consequence, the concentration of the receptor is a major component that governs the magnitude of the estrogen response. Despite the extensive knowledge on mechanism of estrogen receptor action, regulation of estrogen receptor itself is not very well understood. Estrogen receptor is known to be downregulated under hypoxia leading to inhibition of estrogen receptor mediated transcription activation. We have studied mechanism of loss of estrogen responsiveness under hypoxia. We found that Hif-l${\alpha}$, a major transcription factor regulating hypoxic response, inhibited transcription of estrogen response element driven luciferase gene by expression of HIF-l${\alpha}$/vp16 construct designed to contain transcription activity under normoxia. This loss of estrogen responsiveness appears to be the result of ER${\alpha}$ downregulation. ER${\alpha}$was downregulated at the levels of ligand-biding and protein within l2-24h, and the response was blocked by the proteasome inhibitor MG132, protein synthesis inhibitor cyclohexamide, and tyrosine kinase inhibitor Genistein. These results demonstrate that Hif-l${\alpha}$ downregulates ER${\alpha}$ by proteasome dependent pathway.

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Effects of different cardiorespiratory fitness response to exercise training on cardiovascular disease and adipocytokine in abdominal obesity women (운동 트레이닝을 통한 심폐체력 반응의 차이가 복부비만 여성의 심혈관계 위험요인과 아디포싸이토카인에 미치는 영향)

  • Park, S.H.
    • Exercise Science
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    • v.21 no.1
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    • pp.111-120
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    • 2012
  • The purpose of the study was to assess the effects of different cardiorespiratory fitness response to exercise training on cardiovascular disease and adipocytokine release and gene expression in abdominal obesity women. forty eight middle-age women were divided to a exercise-responder (n=34) group (ERG) and a exercise-nonresponder (n=14) group (ENRG) based on cardiorespiratory fitness after exercise training (12weeks, 1200 kcal/week, moderate-vigorous intensity, walking and jogging). Cardiorespiratory fitness was measured using maximal oxygen uptake with metabolic gas analysis and body composition was determined by bioelectrical impedance. We measured lipid and glucose profiles, blood adipocytokines and adipocytokine genes expression in adipose tissue. Waist girth (p=0.040), and %body fat (p=0.031) were significantly decreased in ERG than ENRG. Triglyceride (p=0.023) and systolic blood pressure (0.046) were significantly decreased in ERG than ENRG. Blood leptin (p=0.022) was significantly decrease in ERG than ENRG but leptin gene expression was decreased both groups (p<0.001). These results show that exercise-responder group improved cardiovascular disease risk factors and adipocytokine more than exercise-nonresponder group after exercise training. Moreover, exercise-nonresponders group show that obese indices and blood leptin and leptin gene expression in adipose tissue were decreased despite the failure to improve fitness. Therefore, regular exercise training seems to give health benefits although the failure to improve fitness.