• Journal of Chest Surgery
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• v.49 no.sup1
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• pp.28-36
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• 2016

Background: This study aimed to develop the models for regional cardiac surgery centers, which take regional characteristics into consideration, as a policy measure that could alleviate the concentration of cardiac surgery in the metropolitan area and enhance the accessibility for patients who reside in the regions. Methods: To develop the models and set standards for the necessary personnel and facilities for the initial management plan, we held workshops, debates, and conference meetings with various experts. Results: After partitioning the plan into two parts (the operational autonomy and the functional comprehensiveness), three models were developed: the 'independent regional cardiac surgery center' model, the 'satellite cardiac surgery center within hospitals' model, and the 'extended cardiac surgery department within hospitals' model. Proposals on personnel and facility management for each of the models were also presented. A regional cardiac surgery center model that could be applied to each treatment area was proposed, which was developed based on the anticipated demand for cardiac surgery. The independent model or the satellite model was proposed for Chungcheong, Jeolla, North Gyeongsang, and South Gyeongsang area, where more than 500 cardiac surgeries are performed annually. The extended model was proposed as most effective for the Gangwon and Jeju area, where more than 200 cardiac surgeries are performed annually. Conclusion: The operation of regional cardiac surgery centers with high caliber professionals and quality resources such as optimal equipment and facility size, should enhance regional healthcare accessibility and the quality of cardiac surgery in South Korea.

• Proceedings of the Korean Society of Veterinary Pathology Conference
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• 2005.11a
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• pp.91-91
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• 2005

• Healthcare Informatics Research
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• v.24 no.4
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• pp.283-291
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• 2018

Objectives: To identify the current status of smartphone usage and to describe the needs for smartphone-based cardiac telerehabilitation of cardiac patients. Methods: In 2016, a questionnaire survey was conducted in a supervised ambulatory cardiac rehabilitation (CR) program in a university affiliated hospital with the participation of heart failure or heart transplantation patients who were smartphone users. The questionnaire included questions regarding smartphone usage, demands for smartphone-based disease education, and home health monitoring systems. Results were described and analyzed according to principal diagnosis. Results: Ninety-six patients (66% male; mean age, $5{\pm}11$ years), including 56 heart failure and 40 heart transplantation patients, completed the survey (completion rate, 95%). The median daily smartphone usage time was 120 minutes (interquartile range, 60-300), and the most frequently used smartphone function was text messaging (61.5%). Of the patients, 26% stated that they searched for health-related information using their smartphones more than 1 time per week. The major source of health-related information was Internet browsing (50.0%), and the least sought source was the hospital's website (3.1%). Patients with heart failure expressed significantly higher needs for disease education on treatment plan, home health monitoring of blood pressure, and body weight (${\chi}^2=5.79$, 6.27, 4.50, p < 0.05). Heart transplantation patients expressed a significant need for home health monitoring of body temperature (${\chi}^2=5.25$, p < 0.05). Conclusions: Heart failure and heart transplantation patients show high usage of and interest in mobile health technology. A smartphone-based cardiac telerehabilitation program should be developed based on high demand areas and modified to suit to each principal diagnosis.

• Quality Improvement in Health Care
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• v.28 no.2
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• pp.14-29
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• 2022

Purpose:In order to improve the quality of cardiac rehabilitation, it is important to examine the experiences of the patients and how they feel about each part of the process. We used a qualitative research methodology to conduct an in-depth review of the experiences of patients who participated in cardiac rehabilitation. Methods: According to semi-structured guidelines, in-depth interviews were conducted with a total of five patients undergoing cardiac rehabilitation. Results: A total of 232 codes was derived; these codes were split into 4 categories and 10 subcategories. Although the patients were apprehensive about the diagnosis of heart disease, it also gave them a chance to reflect on their health behaviors of the past. In addition, they began to appreciate their families and support networks more as the disease progressed. The participants did not know about cardiac rehabilitation until the medical staff recommended it, but they participated in the program with the expectation that they could become healthier. The participants felt that they became more physically and mentally healthy while undergoing cardiac rehabilitation. Rehabilitation served as an opportunity to improve other health behaviors as well. However, they emphasized that it is necessary to continuously maintain improved health behavior, find an exercise method that is suitable for one's physical ability and not monotonous, and prepare a plan to reduce the time and economic burden of cardiac rehabilitation. Conclusion: The participants' positive experiences confirmed in this study will be used as evidence for the expansion of cardiac rehabilitation programs.

• Journal of Korean Academy of Nursing
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• v.30 no.2
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• pp.463-475
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• 2000

The purpose of the study was to identify the effects of inpatient cardiac rehabilitation programs on motivation, the performance of health behavior, and quality of life in patients with coronary artery disease. The subjects consisted of 31 patients who participated in the rehabilitation program during their hospital stay, and were compared with 34 patients who did not participate. The study results are as follows: 1. The mean of cardiac risk factor scores for the subjects was 22.5 (SD = 5.5) at the level of low to moderate risk with some possibility to improve. The physiological and behavioral risk factors for the subjects were also in the normal range or slightly above the normal range. 2. The motivation level to preform health behaviors for both groups was improved after discharge. Also, perceived self-efficacy was significantly higher for the program participants than for the comparison group at the post-test. 3. The performance of cardiac related health behaviors improved for both groups after discharge, but there were no significant differences between the two groups. The program participants reported better performance in most health behaviors at the post-test, but the results failed to reach a statistical significant level. 4. As for motivation and health behavior, the subjects in the both groups showed an improved quality of life after the discharge. In addition, the program participants produced significantly higher scores in health and functioning dimension than the comparison group during the post-test. In conclusion, the study partially supported the effects of the inpatient cardiac rehabilitation program to motivate and improve the quality of life, and provide the need to apply early rehabilitation interventions for the patients after cardiac events. Further study with a longitudinal design is also suggested to verify the effect of cardiac rehabilitation program from hospitalization to discharge and subsequently to fully recover to the level of pre-hospitalized state.

• BMB Reports
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• v.43 no.4
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• pp.297-303
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• 2010

In order to demonstrate the potential therapeutic effect of two flavonoids, Baicalein and Wogonin, on suppression of pathological myocardial fibrosis in hypertension, we investigated their in vitro effects on collagen expression in primary cultured cardiac fibroblasts isolated from neonatal normotensive (WKY) and hypertensive (SHR) rats. Our results showed that over-expression of collagen mRNA and protein induced in cardiac fibroblasts by angiotensin (AngII) could be attenuated significantly by both flavonoids at an optimal dosage ($30\;{\mu}M$; P < 0.01). Results of immunoblots showed that expression of 12-LO level, p-ERK/ ERK ratio and MMP-9 in AngII-stimulated SHR cardiac fibroblasts were significantly down-regulated by both flavonoids. Our results show that both Baicalein and Wogonin can suppress collagen deposition in AngII-stimulated SHR and WKY cardiac fibroblasts.

• The Korean Journal of Rehabilitation Nursing
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• v.2 no.2
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• pp.153-162
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• 1999

The purpose of this study was to determine the effects of an rehabilitation educational program on anxiety, health compliance and quality of life of the patient with cardiac valve replacement. The 80 Subjects for the study were surveyed at the outpatient clinic in S medical center in Buchon City in Korea. Among them, 40 patients had been taught about the cardiac rehabilitation education program and 40 patients had not been taught while they were in the hospital. Those 2 groups of patients were surveyed with the instruments of Spilberger's anxiety scale, and the questionnaire of health compliance and quality of life. The data were analyzed by using $X^2$-test, t-test, Pearson's correlation. The results of this study were as follows: 1. Anxiety in educated group was significantly decreased (t=-2.60, p= .011) comparing to u n edu cat ed group. 2. The health compliance in educated group was significantly in creased (t=2.09, p= .040) comparing to uneducated group. 3. The quality of life of the two groups of pa tients was not different significantly (t=1.83, p= .072). 4. The correlation between anxiety and health compliance was significantly reversed (r=- .461, p= .000). The correlation between anxiety and quality of life was significantly reversed (r=- .654, p= .000). The relationship between health compliance and quality of life revealed significant (r=.438, p= .000). Considering above results, the cardiac rehabilitation educational program for the patients with the cardiac valve replacement was strongly recommended to be used.

• The Korean Journal of Rehabilitation Nursing
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• v.18 no.2
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• pp.135-144
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• 2015

Purpose: This study was conducted to examine the effects of an individualized cardiac rehabilitation education program on knowledge about coronary artery disease (CAD), compliance of sick role and vascular health status in patients with percutaneous coronary intervention (PCI). Methods: Quasi-experimental design-based nonequivalent control group pretest-posttest design was employed. Using convenience sampling, data were collected from 60 patients who underwent PCI at S Hospital in S City from September 2014 to February 2015. For examining the effects of an individualized cardiac rehabilitation education program, knowledge about CAD, compliance of sick role and vascular health status were measured. Results: The experimental group showed statistically significant differences in knowledge about CAD (t=24.21, p<.001), compliance with sick role (t=20.81, p<.001) and vascular health status (t=15.07, p<.001) compared to the control group. Conclusion: The individualized cardiac rehabilitation education program is effective in improving knowledge about CAD, compliance of sick role and vascular health status in patients who underwent PCI. Based on the findings of this study, nursing intervention programs focusing on individualized approach will be useful for patients undergoing PCI.

• Journal of Korean Academy of Nursing
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• v.33 no.4
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• pp.510-518
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• 2003

Background. Ischemic heart disease results from athesclerotic changes of the coronary artery. These changes are aggravated by hypercholesterolemia, smoking, obesity, lack of exercise, coronary-prone personality, and stress. Because these risk factors affect not only the prevalence of the ischemic heart disease but also recurrence of the disease, cardiac rehabilitation programs were introduced to help patients with ischemic heart disease reduce risk factors. Diverse cardiac rehabilitation programs are needed to motivate participation in cardiac rehabilitation and to enhance patients' quality of life. Objectives. To examine the effect of a self-efficacy promoting cardiac rehabiltation program on self-efficacy, health behavior and quality of life of patients with ischemic heart disease. Methods. Data were collected from 45 hospitalized ischemic heart disease patients. Medical records were reviewed to obtain demographic and clinical characteristics. Data regarding self-efficacy, health behavior, and quality of life were obtained from interviews using structured questionnaires. The nonequivalent control group non-synchronized design was used to conduct this study. One session of conventional group education was given to patients in the control group while they were in the hospital. Patients in the experimental group participated in a newly developed cardiac rehabilitation program. It focused on strengthening self-efficacy with four self-efficacy sources-performance accomplishment, vicarious experiences, verbal persuasion and physical status using two individualized in-hospital education sessions and four weekly telephone counseling follow-up calls after discharge. Results. Four weeks after discharge, the increment of total self-efficacy score was significantly higher in the experimental group than in the control group (p<.0l). There was also a significant difference in the total quality of life scores increments between the two groups (p<.0l). However, no significant changes were noted in the increments of total health behavior scores between the two groups. Conclusion. A cardiac rehabilitation program focusing on promoting self-efficacy was effective in improving self-efficacy, and quality of life of patients with ischemic heart disease.

• Proceedings of the KOSOMBE Conference
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• v.1992 no.11
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• pp.146-149
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• 1992

The cardiac depolarization model using three dimensional ventricular model is simulated. To study this theme, we constructed a cardiac ventricular model and simulated the cardiac activation process using the action potential duration and the activation time. The cardiac potential model is generated by the logical combination of the elliptic equations. The action potential duration could be obtained from the fact that it is linearly distributed between model cells. The cardiac activation process was simulated by the law of "all-or-none". Based on the activation time and the action potential duration the cardiac potential at the arbitrary time after the activation of the model cell was computed. To test the validity of model, the comparison the results of model simulation with the physiological data was performed.