• Journal of the Korean Institute of Gas
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• v.25 no.3
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• pp.53-58
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• 2021

The number of patients with cardiovascular diseases who experience an out-of-hospital cardiac arrest (OHCA) are increasing among young adults as well as the aged population. An automated external defibrillator (AED) is vital in improving survival rates of OHCA victims. Survival rates of OHCA were shown to decline exponentially in time to defibrillation, yet studies in Korea are uncommon that captures the properties of their survival rates in examining optimal locations of AEDs. In this study, we worked on the maximal gradual coverage location problem (MGCLP) with exponential decay coverage function to decide on their optimal locations. The exponential decay coverage function mitigates the drawback of over-estimating survival rates of OHCA patients. It is expected that a more sophisticated facility location problem will be developed to identify the "emergent" characteristics of pedestrians who responds to the OHCA occurrence by incorporating random pedestrian locations and movement through simulation.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.34 no.3
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• pp.263-271
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• 2016

On account of population aging and increasing cardiovascular disorders, acute cardiac arrest cases are escalating each year. In order to increase the survival rate of the patients, rapid cardiopulmonary resuscitation is necessary. For this reason, the government is expanding the supply of Automated External Defibrillators(AED). However, the AEDs cannot be effectively deployed to the incident cases that occur outdoors, for the installed AEDs are mostly located indoors. After analyzing the distribution of incident cases within the study area, about 11% of cardiac arrest incidents occurred in open spaces including sidewalks and residential areas. This study was conducted to increase the survival rate of the patients by allocating 41 additional AEDs in the study area using a GIS based location-allocation method. To conduct a feasibility study, the density of a senior floating population covered by the same number of AEDs placed at random and the density covered by the experiment were compared. In conclusion, having excluded outliers caused by geological and social factors, results showed that AEDs placed through GIS based location-allocation covered 5% more of the senior floating population density.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.37 no.4
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• pp.253-265
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• 2019

In this study were analyzed the errors on the registration of details information, location of E-GEN (Emergency medical-GEN) AED (Automated External Defibrillator) installation site and the adequacy of spatial arrangement, which suggests an improvement methods of constructing an app or web based on time and space data for efficient operation of considering accessibility and usability. As a result of this study, first, it was not equal to each other for locations of each installation point of AED, that confirmed some area were dense or requiring additional installation. Second, it confirmed the inaccuracies in inputting and registering information about the installed location, such as the actual installation location information and the attribute information of the AED. Third, the main access node and the main address node were connected to a straight line that was found not be connected to the back door, the straight line, the stairs. Also, the opening times of AED installation sites varied according to the week and the season, the entrance was managed by the apartment management office in a separate place, it needs to be established on this information. In conclusion, it proposed a method to improve spatial equity and accessibility, a method to provide accurate distance and time according to actual movement routes in case of emergency, and a possibility of using each facility considering day and time.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2017.05a
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• pp.350-352
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• 2017

Virtual reality technology was initially developed for entertainment purposes such as games, movies, sports, and theme parks, but gradually expanded to a number of industries such as education, e-commerce, and health care,. Therefore, safety education content incorporating VR is also rising rapidly. However, the program activity on safety education in our country is still insignificant. Although rescue of patients with acute cardiac arrest using defibrillators is one of the most representative safety education, in 2014, defibrillators are rarely used in Korea to save the lives of patients and there are very few cases of using defibrillators. The use of automatic defibrillators and the importance of knowing how to use them for expanding accessibility are necessary. However, it is not easy to provide experience education only after completing the safety education in simple theoretical education. In this paper, we propose a automatic defibrillator training simulation system using virtual reality that can be freelu trained at any time.

• The Korean Journal of Emergency Medical Services
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• v.18 no.1
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• pp.17-27
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• 2014

Purpose : The purpose of the study is to investigate the factors influencing using AED use in South Korea and Japan. Methods : I conducted a questionnaire survey from February 25 to March 4, 2013, receiving responses from 517 people in Korea and 520 people in Japan. The questionnaire included sociodemographic factors, history of heart disease, AED knowledge, and other variables. A logistic regression analysis was conducted. Results : Among the 517 Korean respondents, 220 (42.6%) intended to use AEDs. Among the 520 Japanese respondents, 384 (74.4%) had similar intentions. Multiple logistic regression analysis found the following significant predictors of intent to use AEDs: gender (odds ratio [OR] = 0.419), household income (OR = 0.991), and AED knowledge (OR = 2.833) in Korea; and gender (OR = 0.582), age (OR = 0.968), cardiac disease history (OR = 2.099), and AED knowledge (OR = 2.984) in Japan. Conclusion : It would be helpful to teach AED use to encourage performing public access defibrillation. In addition, it is necessary to design AED education programs based on country-specific factors.

• The Korean Journal of Emergency Medical Services
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• v.26 no.2
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• pp.97-111
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• 2022

Purpose: Automated External Defibrillator (AED) usage in out-of-hospital cardiac arrests (OHCAs) improves the survival of patients. In Singapore, public AEDs are protected by locked boxes with a 'break glass' mechanism to deter theft. Community responders have sustained injuries while breaking glass to retrieve AEDs. This unprecedented study aimed to elucidate the factors influencing successful retrieval of an AED and to document the prevalence of injuries. Methods: A survey was created and distributed. Participants were required to have responded to an OHCA in the past 12 months. Comparison tests were performed with the Fischer-Freeman-Halton Exact test or Pearson chi square test at 5% significance levels, and with multiple logistic regression with a logit link function. Results: Eighty-eight participants were eligible. The success of retrieving an AED was found not to be impacted by occupation, age, gender or time. Participants who responded to an OHCA because of activation by the myResponder App were more likely to retrieve an AED successfully. (AOR 11.111, 95% CI: 2.141-58.824) Conclusion: Use of the myResponder mobile application is associated with the greater success of retrieving an AED. Successful retrieval of an AED is not impacted by time, gender, age, or the occupation of the responder. Community responders in Singapore remain motivated to respond to Cardiac Arrests despite risk of injury.

• Journal of East-West Nursing Research
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• v.19 no.2
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• pp.96-103
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• 2013

Purpose: The purpose of this study was to identify the factors influencing hospital staffs' performance ability of Cardiopulmonary resuscitation (CPR). Methods: The study was conducted with 250 hospital staffs in B hospital located in Busan. The survey data were collected from August 1 to September 15, 2012 and were analyzed using frequencies, percentages, means, t-test, ANOVA, Pearson correlation coefficient and stepwise multiple regression with the SPSS WIN 19.0 program. Results: There were statistically significant differences in performance ability of CPR depending on occupations, CPR experience, CPR situations, identification of Automated external defibrillator (AED) location within the hospital, AED use experience, CPR training experience and AED training experience. A significant positive correlation was found between CPR knowledge and performance ability in addition to a significant positive correlation between CPR attitude and to performance ability. The significant factors influencing performance ability of CPR were CPR attitude, occupations, CPR training experience, knowledge and identification of AED location within the hospital. Those factors explained about 40.1% of the variance. Conclusion: It is necessary to develop a strategy for hospital staff to improve the levels of performance ability of CPR.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.11
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• pp.416-424
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• 2017

This study was conducted to examine the awareness of workers in public institutions of automated external defibrillators, their usage intention and related educational experience in an effort to increase the efficiency of education and the rate of automated external defibrillator usage in emergency situations. The subjects in this study were 243 selected. male and female adults who worked in public institutions in Gangwon Province. A survey was conducted from June 13 to August 21, 2016. The statistical analysis was based on the frequency analysis and the $X^2$-test. There were significant differences among the public institution workers awareness of how to use an automated external defibrillator according to gender (${\chi}^2=6.32$, p<0.05) and academic credentials (${\chi}^2=5.91$, p<0.05). Additionally, there were significant differences in usage intention according to academic background (${\chi}^2=5.70$, p<0.05). The most common reason for having no intention to use an automated external defibrillator for patients with cardiac arrest was that the respondents did not know how to use it (31.5%). There were also significant differences in educational experience with automated external defibrillators according to age (${\chi}^2=6.15$, p<0.05), academic credentials (${\chi}^2=11.56$, p<0.01) and career (${\chi}^2=11.92$, p<0.01). The most common form of education that the workers received pertaining to automated external defibrillators was a combination of theoretical and practical education, which represented 55.9%. The findings of the study seem to suggest that workers in public institutions used by many people must receive compulsory standard education regarding automated external defibrillators and try to boost the revival rate of patients with cardiac arrest in real emergency situations.

• Journal of muscle and joint health
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• v.26 no.2
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• pp.131-140
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• 2019

Purpose: The purpose of this study was to explore factors influencing for intention to perform cardiopulmonary resuscitation (CPR) in undergraduate nursing students. Methods: A total of 146 students at G University participated in this descriptive study. With a self-administered questionnaire, the data were collected from November 26 to November 30, 2018. Results: In this study, intention to perform CPR had significant positive correlations with attitude of CPR (r=60, p<.001), self-efficiency of CPR (r=.53, p<.001), and confidence in automated external defibrillator (AED) utilization (r=.47, p<.001). Stepwise multiple regression analysis showed that factors influencing for intention to perform CPR were attitude of CPR (${\beta}=.60$, p<.001) and confidence in AED utilization (${\beta}=.26$, p<.001). Overall, approximately 41% of the variability in intention to perform CPR was explained by these variables ($R^2=.41$, F=50.04, p<.001). Conclusion: In order to promote the intention to carry out CPR among nursing college students, it will be necessary to develop strategies to strengthen a positive attitude toward CPR in fundamental nursing and clinical nursing practices in addition to improve confidence in AED utilization.

• Journal of Biomedical Engineering Research
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• v.35 no.6
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• pp.219-226
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• 2014

This study is to develop a basic life support (BLS) app using the android based smartphone and to evaluate the function of the app. Suggested app contains chest compression feedback function, the map of automated external defibrillator (AED), direct emergency call and the basic knowledge of BLS. Using the accelerometer of the smartphone, we implemented a real-time algorithm that estimates the chest compression depth and rate for high quality cardiopulmonary resuscitation (CPR). The accuracy of algorithm was evaluated by manikin experiment. We made contents which were easy to learn the BLS for the layperson and implemented a function that provides the AED location information based on the user's current location. From the manikin experiment, the chest compression depth and rate were no significant differences between the manikin data and the app's feedback data (p > 0.05). Developed BLS app was uploaded on Google Play Store and it was free to download. We expected that this app is useful to learn the BLS for the layperson.