• 한국응급구조학회지
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• 제12권3호
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• pp.43-53
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• 2008

Purpose : This study was designed to examine physiological changes in the body of rescuers conduct CPR according to the 2005 new guideline from American Heart Association. The ratio of artificial respiration has changed from 15 : 2 into 30 : 2 in 2005. The researcher tried to know the correlation between the physiological changes and the accuracy of CPR. Method : The examinees of this study were 26 students (Dept. of Emergency Medical Service). After the training, participants conducted 10 minute CPR and soon after the CPR, their vital signs were checked, and lactic acid and concentration of ammonia were analysed from their blood samples. Questionnaires to ask their subjective fatigue level were filled out after blood samples and 10 minute - CPR was performed. Results : 1) After the CPR, concentrations of ammonia were $149.71{\mu}{\ell}/d{\ell}$ and $162.17{\mu}{\ell}/d{\ell}$ in 15 : 2 and 30 : 2, respectively. The number was higher in 30 : 2 but it wan not statistically meaningful (p = .493). Log value of lactic acid was a little higher in 30 : 2 with 42 log($mmol/{\ell}$) and 54 log($mmol/{\ell}$) in 15 : 2 and 30 : 2, respectively but it was not statistically meaningful (p = .113). 2) Blood pressure in 15 : 2 and 30 : 2 were 118.50 mmHg and 125.08 mmHg while pulse in two different cases were 96.14 and 97.25, showing no statistically significant differences (blood pressure : p = .155, pulse : p = .841). 3) Subjective fatigue was a bit high in 30 : 2 with 5.93 and 6.92 points in 15 : 2 and 30 : 2 respectively but it was not statistically meaningful (p = .142). 4) In the 10 minute CPR, respiration accuracy was 96.21% in 15 : 2 and 94.79% in 30 : 2. There was no statistical significances between the two(p = .225). In the meanwhile, chest compression accuracy was 92.57% in 15 : 2 and 91.83% in 30 : 2. From the beginning to the end of chest compression, there showed no difference(p = .425). the type of CPR did not influence upon the accuracy of chest compression(p = .756). Conclusion : In the CPR conducted by skilled rescuers for 10 minutes, there were no statistically meaningful differences between 15 : 2 and 30 : 2 in the concentration of fatigue element in a blood, subjective fatigue, vital signs and accuracy of CPR. Therefore, 30 : 2 CPR recommended by American Heart Association need to be recommended and performed in scene size up.

• 문화기술의 융합
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• 제9권5호
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• pp.167-173
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• 2023

이 연구의 목적은 대학생을 대상으로 심폐소생술 마네킹을 사용하여 인공호흡과 흉부 압박의 정확도를 분석하였다. 첫째, 가슴압박 횟수에서 실험대상자 A, F, H, I, J는 60회에서 63회로 각각 비슷한 횟수를 나타냈고, 기준보다 매우 낮았다. 실험대상자 B, D, E, G는 90회에서 91회로 나타나 정상범위를 유지하였다. 그런데 C는 119회로 다소 높게 나타났다. 둘째, 가슴압박 깊이는 58.60mm로 대부분 깊게 압박하였다. 실험대상자 C는 51mm로 정상에 근접하였고, 실험대상자 A~J는 55mm~62mm로 유의하게 높게 나타났다. 그 이유는 가슴압박의 경험이 전혀 없는 불안정한 심리상태와 자신감이 부족한 결과로 보인다. 셋째, 정확도에 있어서, 실험대상자 E는 12%로 나타나 정확도가 가장 낮았고, A~J는 33%~80%로 나타났다. 실험대상자 B는 95%의 정확도를 보였는데, 이는 D가 군 복무 중 이론 교육을 통하여, 가슴압박 지점을 정확하게 인지한 결과로 보인다.

• Journal of Chest Surgery
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• 제27권4호
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• pp.335-338
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• 1994

Traumatic asphyxia is a distinctive clinical syndrome characterized by cervicofacial cyanosis and edema, bilateral subconjuctival hemorrhage, and multiple petechiae of the face, neck, and upper part of the chest after a severe compressive crush injury of the thorax or of the upper part of the abdomen.The pathophysiologic mechanism of traumatic asphyxia is reflux of blood from the heart retrograde through the valveless superior vena cava and the great veins of the head and neck by severe compression of the thorax or the abdomen.We experienced one case of the traumatic asphyxia, and its clinical features are discussed.

• Journal of Chest Surgery
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• 제33권10호
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• pp.847-850
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• 2000

Isolated bronchogenic cysts of the diaphragm are rare abnormalities. They are usually asymptomatic unless secondarily infected or large enough to cause compression of vital structures. The patient was a 31-year-old man and had no symptoms except mild postprandial epigastric discomfort. The chest X-ray and chest C-T examination revealed a mediastinal mass at the left cardio-vertebro-phrenic angle. We performed the operation under the impression of solid mass at mediastinum. We revealed that the mass was bronchogenic cyst in diaphragm. Therefore we report this case with review of literatures.

• Journal of Chest Surgery
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• 제21권4호
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• pp.778-781
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• 1988

With the advent of widespread mechanization and high-speed era, the incidence of traumatic rupture of the tracheobronchial tree has been increased considerably. Rupture of the bronchus is an unusual result of nonpenetrating trauma to the chest. This case was a 30 years old male who was a worker in the mine. The patient had sustained a compression chest injury with multiple rib fracture. At the time trauma, he was suffered from dyspnea, hemoptysis and hemopnemothorax of both side were noted. After tracheostomy, corrective surgery was performed with end-to-end anastomosis on the 8th time after trauma. Postoperative course was uneventful and good result of bronchogram with hypaque on the 16th day after operation.

• 한국응급구조학회지
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• 제25권3호
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• pp.81-92
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• 2021

Purpose: The aim of the study is to measure the quality of cardiopulmonary resuscitation (CPR) and the fatigue of rescuers wearing PPE (Level D) during a CPR session and to ultimately provide suggestions of safety standards for rescuers. Methods: 36 subjects were enrolled in the study. The subjects were divided randomly into three groups of two-members, three-members, and four-members. Each group performed CPR for 30 minutes. Blood lactate concentration, heart rate, rating of perceived exertion, chest compression depth and rate were measured before experiment and after each cycle. Results: There was a difference in the blood lactate concentration during CPR cycle by member of shifts (p=.014). The blood lactate concentration increased during CPR (p=.000). Subjective fatigue was a significant difference of chest compression in cycles 3, 4, and 5 for the member of shifts during CPR (p=.049, p=.009, p=.015). Depth and rate of chest compression were not different for the member of shifts during CPR. Conclusion: It is necessary to establish standards for the member of shifts during CPR, to reduce the fatigue of rescuers.

• 한국응급구조학회지
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• 제15권2호
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• pp.101-108
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• 2011

Purpose: Cardiopulmonary resuscitation (CPR) prevents tissue necrosis of the brain and cardiac muscle in the cardiac arrest patient and requires exact skills in order to increase survival rate. Through comparison of the training effects of feedback manikin and non-feedback manikin, this study present the effective CPR device to CPR instructors. Method: This CPR course for 80 students by using Resusci Anne $SkillReporter^{TM}$ (RASR; Laerdal Medical, Stavanger, Norway) and Actar 911 $Squadron^{TM}$ (A911; Vital Signs, New Jersey, USA) held on December 22, 2009. Thirty seven students and two assistants were placed in one laboratory, there were five RASR manikins which provide the LED performance indicator, not the metronome. Forty two students and two assistants were placed in the other laboratory, there were 20 A911 manikins which don't provide any feedback indicator. Chest compression scores and ventilation compression scores obtaining from two groups were analysed statistically by using independent t-test. Results: Chest compression scores, average depth (mm) was 37.5 in RASR and 41.80 A911 (p=.004), too depth (#) was 2.8 in RASR and 19.4 A911 (p=.005), average number per min (#/min) was 64.4 in RASR and 68.2 A911 (p=.038), wrong hand position (#/min) was 10.9 in RASR and 30.8 A911 (p=.040). Four items that showed better scores in group RASR had statistically significant difference. Ventilation compression scores, percent correct (%) was 40.6 in RASR and 20.6 A911 (p<.001), number correct (#) was 4.7 in RASR and 2.1 A911 (p=.002), too fast (#) was 0.9 in RASR and 2.9 A911 (p=.003), average volume (ml) was 536.5 in RASR and 707.1 A911 (p=.011). Also, three items that showed better scores in group RASR had statistically significant difference. Conclusions: Regarding the positive effect of CPR training feedback, comparison between the real-time visual feedback manikin (RASR) and the non-feedback manikin (A911) showed that RASR had better results than A911 in chest compression except average number per min (it means that we need harder chest manikin) and ventilation. Verification of the training effect in the real world such as CPR outcomes is also necessary. A proper application of manikin in training circumstances and research on retention of CPR skills will be needed.

• Journal of Chest Surgery
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• 제51권1호
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• pp.57-60
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• 2018

Left main bronchus compression occasionally occurs in patients with cardiac disease. A 19-month-old female patient weighing 6.7 kg was admitted for recurrent pneumonia and desaturation. S he had an atrial septal defect (AS D) with a right aortic arch. Her left main bronchus had been compressed between the enlarged right pulmonary artery (RPA) and the descending thoracic aorta for 14 months. We conducted ASD closure and RPA anterior translocation via sternotomy. The left main bronchus compression was relieved despite the medium-term duration of compression.

• 한국응급구조학회지
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• 제4권1호
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• pp.83-93
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• 2000

This survey is mainly focus on identifying the efficacy of CPR training for 92 first responders who participated in the first aid and emergency rescue program dated on November 22 and November 24, 2000. First responders are trained and evaluated using AHA guideline for 4 hours. Data are analyzed by Percentage, Mean, T-test, F-test using SPSS program. The results for this study are as follows: 1. An average score for CPR evaluation is high as 1.71 of total score 2.0. 2. Between adult CPR and infant CPR, an average score for adult CPR is higher than infant CPR. The highest item of adult CPR and infant CPR is checking for unresponse(1.95 and 1.93), the lowest items are checking for circulation and chest compression position in the adult CPR and location of chest compression in the infant CPR 3. There are statistically significant differences in the evaluation score of CPR according to age, education level, occupation, job experience and emergency accident situation in the past.

• Journal of Chest Surgery
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• 제47권3호
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• pp.313-316
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• 2014

Airway obstruction after esophageal surgery is quite rare, and few such cases have been reported. A 57-year-old woman who underwent the Ivor Lewis procedure for esophageal carcinoma complained of a sudden onset of severe dyspnea on postoperative day 3. Chest computed tomography scan revealed that the collection of a large volume of mediastinal fluid caused marked luminal compression on the trachea and the gastric conduit. Explorative thoracotomy revealed a clear serous fluid in the space between the trachea and the gastric conduit, and all respiratory symptoms were relieved after the fluid was drained. The possibility of tracheal compression by loculated effusion, such as chyloma, should be considered in a patient who complains of respiratory deterioration after esophageal surgery.