• Title, Summary, Keyword: Ischemic Heart Disease

Search Result 250, Processing Time 0.038 seconds

Comparison of Magnetocardiogram Parameters Between a Ischemic Heart Disease Group and Control Group (정상군 및 허혈성 심질환 환자군에서의 심자도 파라미터 비교)

  • Park, Jong-Duk;Huh, Young;Jin, Seung-oh;Jeon, Sung-chae
    • The Transactions of the Korean Institute of Electrical Engineers D
    • /
    • v.54 no.11
    • /
    • pp.680-688
    • /
    • 2005
  • The electrical current generated by heart creates not only electric potential but also a magnetic field. We have observed electrophysiological phenomena of the heart by measuring components of magnetocardiogram(MCG) using 61 channel superconducting quantum interference device(SQUD) system. We have analyzed the possibility and characteristics of MCG parameters for diagnosis of ischemic heart disease. A technique for automatic analysis of MCG signals in time domain was developed. The methods for detecting the position, the interval, the amplitude ratio, and the direction of single current dipole were examined in the MCG wave. The position and interval parameters were obtained by calculating the gradients of a envelope curve which could be formed by the difference between the maximum and minimum envelope of multi-channel MCG signals. We show some differences of the frequency contour map between the normal MCG and the abnormal (ischemic heart disease) MCG. The direction of single current dipole can be defined by rotating the magnetic field according to Biot-Savart's law at each point of MCG signals. In this study, we have examined the direction of single current dipole from searching for the centroids of positive and negative magnetic fields. The amplitude ratio parameters for measuring 57 deviation consisted of A$_{T}$/A$_{R}$ and other ratios. and We developed a new analysis method, which is based on the frequency contour map of electromagnetic field. Using theses parameters, we founded significant differences between normal subjects and ischemic patients in some parameters.

The Effect of Hand Massage Program on sleep in Patients with Ischemic Heart disease (손마사지가 허혈성 심질환 환자의 수면에 미치는 효과)

  • Hyun, Kyung-Sun;Lee, Hyang-Yeon;Paik, Seung-Nam;Kong, Song-Cim;Yoon, Kyung-Ja;Kim, Hyun-Sub;Kim, Hoy-Nam;Choi, Ji-Won;Kim, Woon-Jong
    • Journal of East-West Nursing Research
    • /
    • v.7 no.1
    • /
    • pp.105-111
    • /
    • 2002
  • The purpose of this study was to investigate the effect of hand massage program on total sleep hours at night and satisfaction of sleep in clients with ischemic heart disease. The design utilized for this study was quasi-experimental with a nonequivalent control group non-synchronized design. The subjects were fifty-four patients, twenty-eight for the experimental and twenty-six for the control group, who were admitted with ischemic heart disease at cardiac intensive care unit in K medical center of K university. This study was carried out from May, 1999 to March, 2000. Hand massage was carried out at $8{\sim}9$ PM, once a day for 3 days. Total sleep hours at night were measured from 9 PM through 6AM next morning. Sleep hours of subjects were observed 30 minutes interval. Satisfaction of sleep was measured by Visual Analogue Scale(VAS) at 7 AM next morning. The collected data were processed by using the SPSS PC program and analyzed using $X^2$-test and repeated measures of ANOVA. The result of this study are as follows : 1. The total sleep hours at night of the experimental group were not higher than those of the control group. 2. The satisfaction of sleep of the experimental group was not higher than that of the control group. In conclusion, hand massage did not promoted sleep in ICU clients with ischemic heart disease.

  • PDF

A Classification of lschemic Heart Disease using Neural Network in Magnetocardiogram (심자도에서 신경회로망을 이용한 허혈성 심장질환 분류)

  • Eum, Sang-hee
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.20 no.11
    • /
    • pp.2137-2142
    • /
    • 2016
  • The electrical current generated by heart creates not only electric potential but also a magnetic field. In this study, the signals obtained magnetocardiogram(MCG) using 61 channel superconducting quantum interference device(SQUID) system, and the clinical significance of various feature parameters has been developed MCG. Neural network algorithm was used to perform the classification of ischemic heart disease. The MCG signal was obtained to facilitate the extraction of parameters through a process of pre-processing. The data used to research the normal group 10 and ischemic heart disease group 10 with visible signs of stable angina patients. The available clinical indicators were extracted by characteristic point, characteristic interval parameter, and amplitude ratio parameter. The extracted parameters are determined to analysis the significance and clinical parameters were defined. It is possible to classify ischemic heart disease using the MCG feature parameters as a neural network input.

Two cases of Patients with Nonspecific Symptoms Diagnosed as Ischemic Heart Disease (비특이적인 증상을 나타내는 허혈성(虛血性) 심질환(心疾患) 진단 2례)

  • Baik, Jong-Woo;Jung, Ki-Yong;Hsia, Yu-Chun;Park, Jong-Hyeong;Jeon, Chan-Yong;Choi, You-Kyung
    • The Journal of Internal Korean Medicine
    • /
    • v.29 no.4
    • /
    • pp.1130-1137
    • /
    • 2008
  • Objectives : Oriental medical doctors usually use the three-finger pulse diagnosis method to observe disease. Since it is difficult to diagnose ischemic heart disease (IHD) objectively by this diagnostic method, we performed the study to diagnose it as soon as possible by using Yuk Bu Jung Wee Jin Mac(六部定位診脈) and electrocardiogram(ECG). Methods : Patients who had abdominal discomfort were observed by Yuk Bu Jung Wee Jin Mac(六部定位診脈) and we presumed they had heart disease and checked them with electrocardiogram(ECG). Results : We diagnosed it early by using Yuk Bu Jung Wee Jin Mac(六部定位診脈) and electrocardiogram (ECG). Conclusions : The study suggests that it is easy to diagnose IHD early using Yuk Bu Jung Wee Jin Mac(六部定位診脈) and ECG. More data related to IHD is needed.

  • PDF

R and T Wave Amplitude as a Parameter to Detect Coronary Artery Disease (관상동맥질환을 진단하기 위한 R파와 T파의 크기에 대한 연구)

  • Lim, Hyun-Kyoon;Yu, Kwon-Kyu;Kim, Jin-Mok;Kim, In-Seon;Kang, Chan-Seok;Park, Yong-Ki
    • Progress in Superconductivity
    • /
    • v.10 no.1
    • /
    • pp.6-11
    • /
    • 2008
  • Multi-channel magnetocardiography (MCG) has been proposed to detect ischemic heart disease because its sensitivity is quite high comparing with other conventional diagnostic tools. Especially, current map and magnetic field map of MCG provide crucial information on whether myocardiac muscles maintain the normal conduction pathway. In addition, MCG parameters derived from repolarization are useful to detect coronary artery disease. Recently, there was a study reporting that R- and T- wave amplitude are highly correlated with ischemic heart disease. In this study, we studied R- and T-wave amplitude and their ratio as well as MCG parameters. MCG data from 20 young, 20 age-matched controls, and 20 myocardial infarction (MI) patients were analyzed. As a result, MCG parameters showed significant change in MI patients comparing to those of controls. R- and T-wave amplitude of MI patients showed a feature of severe ischemic heart disease even though it was difficult to find consistent values. Further study is needed to reveal the relations between small T-wave amplitude and coronary artery disease.

  • PDF

Early Clinical Result of Coronary Artery Bypass Surgery for Ischemic Heart Diaseas (허혈성심장질환의 치료에서 관상동맥 우회술의 조기성적;53례의 임상적 결과)

  • 최종범
    • Journal of Chest Surgery
    • /
    • v.26 no.4
    • /
    • pp.271-275
    • /
    • 1993
  • In this country, the number of patients with coronary artery disease is progressively increasing with the change of life style and improvement of the diagnostic procedures. In addition, the medically invasive procedure for treating ischemic heart disease was rapidly developed and the surgical patients have more complex and multiple lesions and more surgical risks. Fifty three patients with ischemic heart disease underwent coronary bypass grafting [CABG] for recent 24 months. Twenty patients had three-vessel disease, 17 patients two-vessel disease, and 2 patients single-vessel disease. The average number of distal anastomoses was 3.3 per patient with the range of I to 6 grafts. Forty-one patients [77.4 %] had preoperative left ventricular ejection fraction of 50 % or more and 14 patients[26.4%] had a significant left main coronary lesion. Saphenous vein grafts were employed in 52/53 patients [98.1%] and internal mammary grafts, which were anastomosed to left anterior descending artery, in 38/53 patients[71.7%]. Two patients, whom percutaneous transluminal coronary angioplasty failed for, underwent emergency CABG with only saphenous vein grafts and both patients survived.The hospital mortality was 1.9 % and there was no late death. Perioperative myocardial infarction occurred in 1.9%. All survivors were asymptomatic[in 83% of the patients] and/or improved over their preoperative status. Twenty-nine patients were included in blood conservation group and 21 patients [72.4 %] underwent CABG without any homologous blood transfusion. Our early result of coronary bypass grafting was comparable to that which was reported in other coronary surgery units.

  • PDF

Analysis on the Relationships among the Total Cholesterol, Fasting Blood Sugar, Hypertension and Ischemic Heart Disease on EKG Findings (혈청 총콜레스테롤, 공복시 혈당, 혈압의 분포와 심전도상 허혈성 심질환과의 관련성)

  • Kim, Soo-Keun;Roh, Sang-Chul;Son, Jung-Il;Choi, Bo-Youl
    • Journal of Preventive Medicine and Public Health
    • /
    • v.29 no.4
    • /
    • pp.705-719
    • /
    • 1996
  • Since the 1960s, Korea has achieved rapid economic growth, longer life expectancy, accelerated urbanization and a westenization of diet. Cardiovascular disease has become the leading cause of death; however the prevalence of ischemic heart disease(IHD) remains low. A cross-sectional multiphasic screening service for 18,426 persons aged $30\sim64$ years in a Medical Aid Program in Kyonggi-do Province was conducted from 1991 to 1993. Total cholesterol(TC), fasting blood glucose(FBG), blood pressure(BP), and electrocardiographic(EKG) data were collected. The result as follows ; 1. On the EKG findings, the age-adjusted prevalence of myocardial ischemia and myocardial infarction was 1.45% in men and 2.06% in women. 2. The mean blood pressure was 122.9/78.8mmHg. The age-adjusted prevalence of hypertension was 11.05% in men and 9.02% in women. The prevalence of hypertension showed increasing tendency according to age increase. In all age group, the prevalence of hypertension was higher in men than women. 3. The mean total cholesterol level was 184.4mg/dl in men and 189.2mg/dl in women. The age-adjusted prevalence of hypercholesterolemia was 4.88% in men and 5.67% in women. The total cholesterol level showed increasing tendency according to age increase, except $55\sim64$ age group in men. 4. The prevalence of hyperglycemia is 5.8%. The age-adjusted prevalence of hyperglycemia is 6.72% in men and 4.50% in women. The prevalence of hyperglycemia showed increasing tendency according to age increase. 5. On the EKG findings, the prevalence of myocardial ischemia and myocardial infarction was higher in hypertension than normal, in all age group of men and women less than 40 years-old. Only in women more t]fan 40 years-old, the prevalence of myocardial ischemia and myocardial infarction was higher in hypercholesterolemia and hyperglycemia. Nevertheless there is not statistical association between ischemia heart disease and previous risk factors in other age group, the prevalence of myocardial ischemia and myocardial infarction was higher in hypertension, hypercholesterolemia and hyperglycemia than normal. The result of this study suggest that relationships between major risk factor of ischemic heart disease and ischemic heart disease is similar to existing theory.

  • PDF

Assessment of Viable Myocardium with Nuclear Imaging (핵의학 영상을 이용한 생존심근 평가)

  • Kang, Won-Jun
    • Nuclear Medicine and Molecular Imaging
    • /
    • v.43 no.3
    • /
    • pp.203-206
    • /
    • 2009
  • Nuclear cardiac imaging has been widely used to assess viable myocardium in patients with ischemic heart disease, The assessment of viable myocardium is important in selecting patients who will be benefit from revascularization. Although revascularization is indicated in patients with sufficient myocardium, patients with scar tissue should be treated medically. Nuclear imaging methods including myocardial perfusion SPECT and FDG PET have been shown to be effective modalities for identifying viable myocardium.

Study on the Distribution and Correlation of Stroke Risk Factor according to Age with Stroke Patients - Focused on Past History and Stroke Family History (중풍 환자의 연령에 따른 중풍 위험인자의 분포 및 상관관계 연구 - 병력과 중풍 가족력 중심으로)

  • Shin, Hyun-Su;Kang, Byoung-Kab;Jo, Hyun-Kyung
    • Journal of Physiology & Pathology in Korean Medicine
    • /
    • v.25 no.4
    • /
    • pp.734-742
    • /
    • 2011
  • The purpose of this study was to investigate the distribution and correlation of stroke risk factor according to age with stroke patients. This study was based on clinical data registered in Daejeon Oriental Medical Hospital from November 2006 to December 2010. Study subjects consisted of 779 patients with stroke within 1 month and they were classified according to age and existence of past history such as hypertension, diabetes mellitus, ischemic heart diseaseand stroke family history. Stroke family history was distributed differently according to age unlike past history and in their 50's showed a particularly high rate. There was not statistically significant correlation between stroke family history and past history except for only between stroke family history and diabetes mellitus in the patients in their 80's and more. There was statistically significant correlation between hypertension and diabetes mellitus and especially in the patients in their 60's and 70's. There was statistically significant correlation between hypertension and ischemic heart disease and especially in the patients in their 80's and more. There was statistically significant correlation between diabetes mellitus and ischemic heart disease in the patients in their 60's. There was statistically significant correlation among hypertension, diabetes mellitus and ischemic heart disease, but stroke family history and past history had independence, so management and research for this subject should be required further and further.

Effects of a Smoking Cession Program Using Telephone Counselling and Text Messaging for Patients after Ischemic Heart Disease (전화상담과 문자메시지 제공이 허혈성 심질환자의 금연에 미치는 효과)

  • Kim, Eun-Shim;Choi, Hye-Ok
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.15 no.12
    • /
    • pp.7248-7258
    • /
    • 2014
  • The study was conducted as a quasi-experimental study targeting 60 patients with ischemic heart disease to determine how the smoking cessation program that uses telephone counseling and text messaging (short message) affects smoking cessation self-efficacy, nicotine dependence, co levels, and smoking cessation rate of the first, second experimental group at varying times of arbitration and control group. An examination of the effects of this program revealed the control group to have a significant increase in smoking cessation self-efficacy, smoking cessation rate than the first and second group but a significant decrease in the nicotine dependence, co levels. In addition, although the control group showed a significant increase in smoking cessation self efficacy, smoking cessation rate and a significant decrease in co levels than other groups, there was no difference in nicotine dependence. Therefore, a smoking cessation program that uses telephone counseling and text messaging (short message) for patients with ischemic heart disease worked for the smoking cessation rate and appeared to be more effective, depending on the times of arbitration.