• The Korean Journal of Emergency Medical Services
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• v.14 no.3
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• pp.71-81
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• 2010

Purpose: To minimize an interruption in chest compression, reduce the hands-off time, the American Heart Association has recommended the ratio of chest compression to ventilation ratio to 30:2 from 2005 CPR guideline to 2010 CPR guideline. However, current studies have shown that the hands-off time was > 10 seconds with that method. For this reason, we devised new CPR method that a ventilation to chest compression ratio of 2:30 to reduce pt assessment time and skipped the assessment step of carotid artery pulse would be a more effective way to reduce the hands-off time & the time to set the CPR. According to the more detailed purpose are listed below. 1) We would like to confirm efficiency of a ventilation to chest compression ratio of 2:30 than a chest compression to ventilation ratio of 30:2 to reduce the hands-off time & the time to set the CPR. 2) We would like to evaluate possibility of increasing for chest compression accuracy of a ventilation to chest compression ratio of 2:30 than a chest compression to ventilation ratio of 30:2 3) We would like to evaluate possibility of increasing for ventilation accuracy of a ventilation to chest compression ratio of 2:30 than a chest compression to ventilation ratio of 30:2 Methods: According to 2005 American Heart Association Guidelines, 60 paramedic students(20 students X freshmen, sophomore, junior) performed 5 cycles of 3~ chest compressions : 2 ventilations after A, B, C evaluation with Laerdal Resusci R Anne SkillReporters. After 5 minutes rest, the 60 students performed 5 cycles of 2 ventilations : 30 chest compressions after A, B evaluation with the manikins between 13 and 17 September 2010. The short reports including speed & accuracy of chest compression, respiratory, CPR cycle were gained from the manikins. Hands-off times were measured by assistants. Results: Recently, the importance of high quality CPR was emphasized in order to perform the CPR faster and more accurate. To find out improving the conventional CPR method, we switch the procedure of the compression and the ventilation. By switching the procedure back and forth, we are able to compare the effectiveness of CPR between two type of CPR method which are 2:30 and 30:2 methods. 2:30 is that the breaths is delivered twice, first and perform 30 compressions while 30:2 perform 30 compressions first and give 2 breaths followed by the ABC method. Also, we verify the effectiveness of the hands off time, compression accuracy of the compression through the comparison of the two procedure as mentioned earlier. Consequently research verified that 2:30 is the efficient by providing faster set up delivering more accurate chest compression. Conclusion: 2:30 can minimize a time delay from cardiac standstill until starting the chest compression. In addition, hands-off time which is an interruption in chest compression can be shortened by 2:30 method, which result to effective oxygenation of coronary artery & maintenance of the bloodstream. Once again, performing the 2:30 method provide lessen hands off time and increase the accuracy of the chest compression.

• Journal of the Korean Society of Safety
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• v.29 no.6
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• pp.125-131
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• 2014

The purpose of this study is to investigate the effect of high quality CPR using the 4 types of rescue device equipment and chest compressions energy measurement in pre-hospital settings. So, we used the mode to insert load cell in ALS Skill master Manikin to develop CFMM(Compression Force Measurement Manikin) on main stretcher, CPR board, long spine board, scoop stretcher and floor. And, our research team could know that the main stretcher needed average force of 32.55 (${\pm}1.01$) kg, CPR board of 27.23 (${\pm}1.08$) kg, long spine board of 27.13 (${\pm}1.18$) kg, Scoop Stretcher of 27.38 (${\pm}1.05$) kg and Floor of 27.24 (${\pm}0.93$) kg. CPR board must be necessary in the case of CPR on main stretcher in a moving ambulance. But if the condition of patient's back surface is the removable stretcher and the long spine plate, the patient doesn't have to be spent time to use a CPR board. Furthermore, this research suggests to consider that how to take advantage of the education to students for the equipment to check in real time the energy(kg) requirement of chest compressions.

• The Korean Journal of Emergency Medical Services
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• v.13 no.3
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• pp.29-40
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• 2009

Objective : This study is an experimental study which is designed to examine the differences between knowledge and self-confidence before and after theory education(CPR PPT material) based on guidelines of CPR and emergency cardiac treatment of American Heart Association(AHA, 2005) and video self-instruction program for the general public by Korean Association of Cardiopulmonary Resuscitation(KACPR), trace CPR performance ability after CPR and AED education and investigate the accuracy of artificial respiration and chest compression, and know the difference in CPR performance abilities including AED. Methods : Subjects of this study include ground crews and staffs at M airport in G province equipped with emergency equipments for CPR according to Art. 47, Sec. 2 of Emergency Medical Law, airport police, rent-a-cops, security guard, quarantine officer, custom officer, and communication, electricity, civil engineering, facility management staff, airport fire fighting staff, air mechanic, traffic controller, and airport management team among airport facility management staffs. They were given explanation of necessity of research and 147 of 220 subjects who gave consent to this research but 73 who were absent from survey were excluded were used as subjects of this study. of 147 subjects, there were 102 men and 45 women. Results : 1) Knowledge score of CPR was $6.18{\pm}0.87$ before instruction and it was increased to $15.12{\pm}1.78$ after instruction, and there was statistically significant difference. 2) Self-confidence score in CPR was $3.16{\pm}0.96$ before instruction and it was increased to $7.05{\pm}0.75$ after instruction, and there was statistically significant difference. 3) Total average score in CPR performance ability after instruction was 7.46 out of 9, performance ability was highest in confirmation of response as 144(97.95%), follwed by request of help as 140(95.25%) and confirmation of respiration as 135(91.83%), and lowest in performing artificial respiration twice(gross elevation of chest) as 97(65.98%). Accuracy of artificial respiration(%) was $28.60{\pm}16.88$ and that of chest compression(%) was $73.10{\pm}22.16$. 4) Performance ability of AED after instruction showed proper performance in power on by 141(95.91%) and attaching pad by 135(91.83%), hand-off for analyzing rhythm showed 'accuracy' in 115(78.23%) and 'non-performance' in 32(21.77%), delivery of shock and hand-off confirmation showed 'accuracy' in 109(74.14%) and 'inaccuracy' in 38(25.86%), and beginning chest compression immediately after AED was done by 105(71.42%).

• The Korean Journal of Emergency Medical Services
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• v.10 no.2
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• pp.35-42
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• 2006

Purpose: We studied that EMT took care in prehospital care of cardiac arrest patients by "the chain of survial", we need the data about treatment of EMT in prehospital care of cardiac arrest patients. and then we want to educate EMT for their emergency skill and knowledge of prehospital care of cardiac arrest patients. Method: We studied 162 cardiac arrest patients were transported by EMT in Jecheon province, Chingbuk. Results: 1. Stage of Early Access 96.9% of people who related the cardiac arrest patients used the Jecheon 119 Rescue at their emergency situation. 2 Stage of Early CPR The EMT supported keeping of airway to 148 of 162 cardiac arrest patients. Artificial respiration was 120 of 162 cardiac arrest patients and chest compression was 119 of 162 cardiac arrest patients. 3. Stage of Early AED There were shocked 6 cardiac arrest patients but weren't shocked 156 victims of 162 cardiac arrest patients by AED. 4. Stage of Early ACLS There were reported 3 of 162 cardiac arrest patients. to Doctor or Hospital Emergency Center for medical direction to EMT in prehospital area. There is no advanced airway, IV insertion and medication to the prehospital cardiac arrest patients.

• Journal of the Society of Disaster Information
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• v.7 no.4
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• pp.266-272
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• 2011

This study is focused on guard major collegians who are composed of factor in medical emergency system. In the case of cardiac failure, it is to make its basic data develop its education program of CPR which can increase the patient's survival rate before his hospitalization. The subject of study is composed of 120 persons who are 94 boy-collegians(78.3%) and 26 girl-collegians(21.7%) in sex and 66 first-grade collegians(55.0%) and 54 second-grade collegians(45.0%) in a school year. There is significant difference in the practices of artificial respiration and the thorax pressure after the education of basic CPR in sex(p<0.01). The practices of artificial respiration in boy-collegians($93.72{\pm}4.21$) is higher than in girl-collegians($82.31{\pm}6.36$) and the practices of thorax pressure in boy-collegians($92.45{\pm}4.44$) is higher than in girl-collegians($88.08{\pm}6.49$). The satisfaction degree of boy-collegians($4.33{\pm}0.59$) is higher than that of girl-collegians($3.73{\pm}0.67$) after theory & practice education of basic CPR(p<0.01). It is necessary to develop the education program and educate its knowledge & technology in proportion to collegians characteristics of sex and school year. Also, education authorities should develop a subject of the accident provided the practical education of CPR for guard major collegians.

• Journal of the Korean Society of Marine Environment & Safety
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• v.25 no.4
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• pp.433-440
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• 2019

Offshore working environments such as ships, offshore oil and gas plants, and offshore wind turbines are isolated and directly exposed to rough seas, which pose high risks of safety accidents. Therefore, all workers in offshore plants should be able to cope with emergency situations and must be qualified according to relevant laws and regulations such as the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW Convention) and Offshore Petroleum Industry Training Organization (OPITO) standards. In particular, marine workers should be able to perform cardiopulmonary resuscitation (CPR) in isolated locations or enclosed and confined spaces such as those in life-boats, life-rafts, rescue-boats, etc. Because the floor material is made of rubber, it may be difficult to perform chest compressions in life-rafts used to escape from emergency situations in ships or offshore plants. Chest compressions performed on life-rafts may reduce the accuracy of CPR and increase fatigue for those providing aid. To measure the accuracy and fatigue of those performing CPR in life-rafts, 15 experimenters with more than five years of experience as first aid instructors were exposed to different CPR environments in a marine safety training center equipped with an artificial wave generator. The results showed that the accuracy of CPR in the classroom was 99.6 %, but that in various life-raft environments was only 84 %. T-verification of the two sites confirmed the reduced accuracy of CPR performed on life-rafts. CPR on life-rafts should be performed in groups of two and with the use of automated chest compression devices.

• The Journal of Korean Society for School & Community Health Education
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• v.10 no.1
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• pp.1-16
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• 2009

Objectives: This study aims to perform comparative analysis of educational effects between video self-instruction (VSI) and basic cardiopulmonary resuscitation among college students in some areas. Methods: This study was conducted with 57 college students (28 for control group and 29 for experimental group) in U Metropolitan City from September 27 to October 5, 2007, and SPSS 14.0 Version was used for analysis. Results: As for differences in attitudes before and after cardiopulmonary resuscitation training, the experimental group (1.48) was higher than the control group (.91), which was significant (p<.001). The experimental group (9.56) also showed higher knowledge score than the control group (7.79) with significant differences (p<.05). The former (3.93) also showed higher concrete self-efficacy than the latter (2.17). with significant differences (p<.05). The experimental group (43.24) showed higher practical performance ability than the control group (34.48), with no significant difference. The former (30.93) also showed higher accuracy in chest compression skill than the control group (20.25). with no significant difference.

• The Korean Journal of Emergency Medical Services
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• v.9 no.1
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• pp.43-53
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• 2005

The purpose of this study was to survey a perception of frequency & importance level of job performance, from 249 paramedics who were working at fire station. The job related activities of 4 duties, 18 tasks and 145 task elements were checked by 4 rating scale. The data were analyzed using a SPSS program for descriptive statistics. The results of the study were as follows ; 1. Some of the most frequent tasks were medical tx, managing people & organization, trauma care, pt assessment, general coping skill 2. Some of the most frequent task elements were preparation of written reports, operation of pt lifting supplies, transportation of patients on stretchers, administration of cervical collar and utilization of scoop stretcher. 3. Some of the highest level of importance in task were resuscitation of circulation, surgical tx, safety & infection control, environmental emergency care, trauma care. 4. Some of the highest level of importance in task elements were administration of cervical collar, adult CPR, infant CPR, child CPR, and AED. 5. The highest level of task elements in perception of frequency & importance were administration of cervical collar, infection control after pt care, utilization of long back board, disinfection of ambulance after ride a long, care of chest pain pt, care of unconscious pt, tx of asthma. 6. A difference between frequent & importance score were due to lack of supplies(41%), structural problems(30%) and medical control system(16%), lack of skills(10%), Suggestion; 1. This paper would be more reliable and confirm through wilder range of survey. 2. It would be necessary of more depth survey through dacom study from paramedic. 3. Development of field oriented protocol & curriculum that based on task elements which have high score of both frequency & importance level is required.

• Journal of the Korea Convergence Society
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• v.12 no.7
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• pp.105-111
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• 2021

The purpose of this study is to determine how the pre-test performed before training affects the results of CPR performance. In the case of the pre-test group(PTG), a pre-evaluation was performed for 1 minute before training, and the group that did not perform the pre-test(NPTG) performed only regular education. In both groups, skill test was performed for 1 minute after training. As a result of comparing the pre and post-test of PTG, there were statistically significant changes in chest compression depth, rate, and compression recoil. There was a statistically significant difference only in the chest compression rate in the chest compression performance results of the two groups after training. There was a statistically significant difference in the results of confidence after training in both groups. It is judged that the pre-test conducted before training has a good influence not only on the results of chest compression, but also on confidence improvement. Therefore, it is judged that it is necessary to develop additional programs such as pre-education test in order to increase the concentration of CPR education for the general population.

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