• Journal of the Korea Society of Computer and Information
• /
• v.28 no.7
• /
• pp.113-120
• /
• 2023

The purpose of this study was the accuracy of cardiac compression, fatigue, and physiological changes of the rescuer for different mask type in cardiopulmonary resuscitation(CPR). Data collection was from 9 to 12 May 2022, the participants were a total of 24 paramedic students with a BLS provider at D University. The students participated in an experiment in which 12 students each wore a surgical mask (Dental mask) and a fine particle 94% blocking mask (KF94 mask) and performed CPR for 2 minutes over a total of 7 times. As a result of the study, in the analysis of the quality of the rescuer's chest compression according to the type of mask, there was a significant difference in the compression speed (F=24.91, p<.001) and bad compression hand position (F=14.54, p=.024) in the group wearing the KF94, Fatigue showed significant differences in both the Dental mask group (F=51.16, p<.001) and the KF94 mask group (F=63.49, p<.001). Among the physiological changes, heart rate showed a significant difference between the Dental mask group (F=34.79, p<.001) and the KF94 mask group (F=35.55, p<.001), and the respiratory rate showed a significant difference between the Dental mask group (F=25.02, p=.001) and the KF94 mask group(F=23.02, p=.002). Therefore, in order to improve the quality of efficient chest compression and reduce the fatigue and physiological changes of rescuers, it will be necessary for rescuers to wear suitable personal protective equipment.

• The Korean Journal of Emergency Medical Services
• /
• v.18 no.1
• /
• pp.7-15
• /
• 2014

Purpose: The purpose of the study is to evaluate the distance and location of the rescuer to patient for the effective chest compressions qualities. Methods: The subjects were 42 students who earned the basic lifesaving technique and had informed consents to participate in the study from May 1 to 20 in 2013. The position of the rescuers included model-0(reference point), model-1(10 cm distance), model-2(20 cm distance), and model-kn(kneeling up). Results: The mean depth of compression was $50.6{\pm}6.6mm$ in Model-0, $48.7{\pm}8.2mm$ in Model-1, $44.2{\pm}10.4mm$ in Model-2, and $51.8{\pm}6.0mm$ in Model-kn. There were statistically significant differences between each Model(p<.001). Conclusion: The closer distance between rescuer and patient could provide more effective chest compressions. Kneeling on the bed stance provided the deeper chest compression consistently than the stool stance.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.14 no.2
• /
• pp.744-750
• /
• 2013

This study is to collect a basic data of how Cardiopulmonary Resuscitation (CPR) procedure can influence to cardiac arrest patient with and without the Depth Device during the average transport time period. The data has achieved by comparing result sheet of CPR procedure by hands only versus with Depth Device by twenty 1st and 2nd class Emergency Medical Technician (EMT) from five different fire stations in city of Chong-Ju, and twenty Emergency Rescue major students who completed the BLS provide course. The experiment participators experienced loss of compression depth and rate increase over time. However, the CPR procedure with Depth Device shows that both EMT and students to allow maintaining both the compression depth and rate. The experiment leaves a positive result for CPR operators and considers being valuable domain for cardiac arrest patient.

• Journal of Korea Entertainment Industry Association
• /
• v.13 no.8
• /
• pp.391-400
• /
• 2019

In this study, we tried to find out the difference in confidence in performing Healthy Life on CPR before and after CPR education to middle school volunteers. Through the above statistical analysis process, the following findings were obtained: First, the general characteristics of the respondents who participated in this survey were higher than that of boys, followed by third, first and second graders. Second, junior high school volunteers were shown to have similar confidence (Chonbach's α=.80) and confidence (Chonbach's α=.76) before CPR education, and confidence in the degree of social contribution (Chonbach's α=7.77). Third, the Pearson Rates Correlation was performed to see the correlation between grade, gender, pre-education confidence, post-training confidence, confidence in the application of airway methods, confidence in the patient's breathing, confidence in chest compression, confidence in the use of defibrillators, and post-cardiopulmonary resuscitation education. As a result, it was confirmed that there was a significant correlation between all the spokesmen. In particular, post-training self-confidence was the highest correlation with coping confidence in case of cardiac arrest, followed by chest compressive confidence. Comparing and reviewing these findings and prior studies as shown above, we were able to establish that CPR education has an impact on the confidence performed by gender.

• The Korean Journal of Emergency Medical Services
• /
• v.26 no.1
• /
• pp.7-19
• /
• 2022

Purpose: The purpose of this study is to evaluate the interrupted chest compression time during the use of an automated external defibrillator (AED) depending on different AED practice training methods, and to report differences in self-efficacy before and after training. Methods: We enrolled university freshmen who have had cardiopulmonary resuscitation (CPR) training but have not or have had AED training but over 6 months. We examined differences between the group that practiced only shockable rhythms during training and the group that practiced both shockable and non-shockable rhythms. Results: A total of 72 individuals participated in this study, with 36 individuals each in the control and experimental groups. There was no statistically significant difference in the proficiency of AED usage between the two groups. In non-shockable cases, the experimental group showed shorter chest compression interruption time than the control group (2.30±1.21sec vs. 3.16±1.73 sec; p<0.01). In terms of self-efficacy before and after training, both groups showed higher self-efficacy after than before training. Conclusion: Individuals who underwent training that provided practice on both shockable and non-shockable rhythms had a shorter interrupted chest compression time when using the AED.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.16 no.5
• /
• pp.3303-3307
• /
• 2015

The purpose of this study was attemped to investigate the clinical presentation and pathophysiology of 74-year-old female who developed pneumoperitoneum as complications of chest compression from sudden cardiac arrest. Such chest compression is the same one excercised to by-stander and paramedics. A healthy 74 year female had a sudden mental deterioration while working at a restaurant. She was transfered from 119 emergency medical system to the hospital. After the symptom developed, by-stander called 119 who carry out 6 minutes Cardiopulmonary resuscitation(CPR). Defibrillation and CPR was carried out by health provider after the arrival, and the patients spontaneous circulation returned. After Return of spontaneous circulation(ROSC), patients was transferred to the nearst hopspital, but suspicious of myocardial infarction, she was again transferred to a larger scale hospital. At the hospital she took X-rays and Abdominal CT, and the results of suspicious gastro-intestinal perforation near gastro-esophageal junction, surgical repair was recommended. But in operation room, while operation went on, cardiopulmonary arrest appeared again, and she expired. For this reason, prehospital CPR needs more accurate localization of cardiac massage and serious consideration of positive pressure ventilation. Moreover, treatment of pneumoperitoneum after CPR needs more cautious consideration of patients hemodynamic stability.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.13 no.4
• /
• pp.1699-1705
• /
• 2012

This study was conducted to examine the differences of the quality of chest compression between 10 cm higher position of rescuer's knee from the bottom and its bottom position during implementation of CPR. It selected randomly subjects out of 66 students who attend the Dept. of Emergency Medical Technology in G college, G metropolitan city as the first grader and divided them into 31 experimental group and 32 control group from Nov. 8 to 9, 2011. Mattress was spread 10 cm higher from the bottom(material: B4 Copy Paper) and on the bottom(material: PVC, size: $185{\times}125{\times}0.65cm$) and only chest compression was conducted for 2 minutes. Experiment was conducted with 1 Resusci Anne mannequin and the results of experiment were recorded with Laerdal PC Skill Reporting System. Data collected were analyzed with $x^2$-test and Fisher's exact probability test using SPSS 14.0 for Window, Mann-Whitney U-test, and Wilcoxon signed rank test. As a result of the study, it was found that 10 cm higher position of rescuer knee from the bottom than the bottom position and group below 170 cm in their height and 65 kg in their weight were more effective in proper depth of chest compression and average chest compression depth.

• Journal of Industrial Convergence
• /
• v.22 no.5
• /
• pp.57-67
• /
• 2024

This study conducted to confirm the effect of college students' individual tendencies and psychological variables on the depth of chest pressure during CPR. For this, the depth of chest compression during CPR was measured after investigating individual tendencies, fatigue, performance confidence, and performance anxiety in 127 college students. Multiple linear regression analysis was performed using individual propensity and psychological variables as independent variables and chest compression depth as dependent variables to identify factors affecting chest compression depth. Pearson correlation analysis was performed to confirm the correlation between variables. As a result of the analysis, the higher the performance confidence, the deeper the chest compression depth, and the higher the performance anxiety, the lower the chest compression depth(p<0.05). The depth of chest pressure showed a positive correlation with individual tendencies, performance confidence, while it showed a negative correlation with fatigue and performance anxiety(p<0.01, p<0.05). Based on these results, it is necessary to increase performance confidence and lower performance anxiety in order to perform the correct chest compression depth. For this, various efforts such as program development, education and research are required.

• Journal of Internet of Things and Convergence
• /
• v.8 no.6
• /
• pp.115-122
• /
• 2022

Recently, the importance of CPR training for the layperson has been emphasized to improve the survival rate of out-of-hospital cardiac arrest patients. An accurate and realistic training strategy is required for the CPR training effect for laypersons. In this study, we develop an extended reality (XR) based CPR training system and evaluate its usability. The XR based CPR training system consisted of three applications. First, a 3D heart anatomy image registered to the manikin is transmitted to the smart glasses to guide the chest compression point. The second application provides visual and auditory information about the CPR process through smart glasses. At the same time, the smartwatch sends a vibration notification to guide the compression rate. The 'Add-on-kit' is a device that detects the depth and speed of chest compression via sensors installed on the manikin and sends immediate feedback to the smartphone. One hundred laypersons who participated in this study agreed that the XR based CPR training system has realism and effectiveness. XR based registration technology will contribute to improving the efficiency of CPR training by enhancing realism, immersion, and self-directed learning.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.11 no.4
• /
• pp.1498-1503
• /
• 2010

PC Skillreporting feedback during cardiopulmonary resuscitaion would improve the performance of chest compression and ventilation during cardiac arrest. BLS skills were measured using Laerdal Skillreporter manikin(Laerdal, Norway) connected to a Laerdal PC Skillreporting system. Ventilation volume, chest compression accuracy, velocity of compression, depth of compression, hand position and chest recoil were measured between the two groups. Ventilation volume was significantly higher in the experimental group than that of control group(p<0.002). Chest compression depth was significantly higher in experimental group than that of control group(p=0.000). The quality of CPR can be improved by the use of PC Skillreporting system.