• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2008년도 하계종합학술대회
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• pp.137-140
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• 2008

The purpose of PEEP is to increased effect reparation in lung. Recently trend of technology is possible to have multi-level or to control freely for variety breathing pattern or breathing mode. Those new technology need some issue like electronic controlled actuator(solenoid), PEEP valve of special structure and control software in micro controller. This paper brief to develop actuator(solenoid) and PEEP valve. This development is to make commercial product of MEKICS.Co.LTD Electronic controlled actuator(Solenoid) is to make force depend on current in linear. And force is convert to pressure in PEEP valve. Major technical issue are how to make the valve with continuous force even dough moving and how to optimize to convert force - pressure.

• Structural Monitoring and Maintenance
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• 제1권3호
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• pp.309-322
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• 2014

Detection of fatigue cracks at an early stage of their development is important in structural health monitoring. The breathing of cracks in a structure generates higher harmonic components of the exciting frequency in the frequency spectrum. Previously, the residual operational deflection shape (R-ODS) method was successfully applied to beams with a single crack. The method is based on the ODSs at the exciting frequency and its higher harmonic components which consider both amplitude and phase information of responses to map the deflection pattern of structures. Although the R-ODS method shows the location of a single crack clearly, its identification for the location of multiple cracks in a structure is not always obvious. Therefore, an improvement to the R-ODS method is presented here to make the identification process distinct for the beams with multiple cracks. Numerical and experimental examples are utilised to investigate the effectiveness of the improved method.

• 대한방사선치료학회지
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• 제27권2호
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• pp.157-166
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• 2015

목 적 : 사이버나이프 종양 추적 시스템(Cyber-knife tumor tracking system)은 환자 외부에 부착한 LED marker에서 얻어진 실시간 호흡 주기 신호와 호흡에 따라 움직이는 종양의 위치와의 상관관계를 바탕으로 종양의 위치를 미리 예측하고 종양의 움직임을 치료기와 동기화 (Synchronize) 시켜 실시간으로 종양을 추적하며 치료하는 시스템이다. 본 연구의 목적은 사이버나이프 종양 추적 방사선 치료 중 기침이나 수면 등으로 인해 예측 불가능한 갑작스러운 호흡 형태 변화에 따른 종양 추적 방사선 치료 시스템의 정확도를 평가하고자 한다. 대상 및 방법 : 연구에 사용된 호흡 Log 파일은 본원에서 호흡 동조 방사선치료(Respiratory gating radiotherapy)나 사이버나이프 호흡 추적 방사선수술(Cyber-knife tracking radiosurgery)을 받았던 환자의 호흡 Log 파일을 바탕으로, 정현곡선 형태(Sinusoidal pattern)와 갑작스런 변화 형태(Sudden change pattern)의 Log 파일을 이용하여 측정이 가능하도록 재구성하였다. 재구성 된 호흡 Log 파일을 사이버나이프 동적 흉부 팬텀에 입력하여 호흡에 따른 움직임을 구현할 수 있도록 기존 동적 흉부 팬텀의 구동장치를 추가 제작하였고, 호흡의 형태를 팬텀에 적용 시킬 수 있는 프로그램을 개발하였다. 팬텀 내부 표적(Ball cube target)의 움직임은 호흡의 크기에 따라 상하(Superior-Inferior)방향으로 5 mm, 10 mm, 20 mm 3가지 크기의 변위로 구동하게 하였다. 팬텀 내부 표적에 EBT3 필름 2장을 교차 삽입하여 표적 움직임의 변화에 따라 사이버나이프 제조사에서 제공된 End-to-End(E2E) test를 호흡의 형태에 따라 각각 5회씩 실시하고 측정하였다. 종양 추적 시스템의 정확도는 삽입된 필름을 분석하여 표적 오차(Targeting error)로 나타내었고, 추가로 E2E test가 진행되는 동안 상관관계 오차(Correlation error)를 측정하여 분석하였다. 결 과 : 표적 오차는 정현곡선 호흡 형태일 경우 표적 움직임의 크기가 5 mm, 10 mm, 20 mm 에 따라 각각 평균 $1.14{\pm}0.13mm$, $1.05{\pm}0.20mm$, $2.37{\pm}0.17mm$이고, 갑작스런 호흡 변화 형태일 경우 각각 평균 $1.87{\pm}0.19mm$, $2.15{\pm}0.21mm$, $2.44{\pm}0.26mm$으로 분석되었다. 표적 추적에 있어 변위 벡터의 길이로 정의할 수 있는 상관관계 오차는 정현곡선 호흡 형태일 경우 표적 움직임의 크기가 5 mm, 10 mm, 20 mm 에 따라 각각 평균 $0.84{\pm}0.01mm$, $0.70{\pm}0.13mm$, $1.63{\pm}0.10mm$이고, 갑작스런 호흡 변화 형태일 경우 각각 평균 $0.97{\pm}0.06mm$, $1.44{\pm}0.11mm$, $1.98{\pm}0.10mm$으로 분석되었다. 두 호흡 형태에서 모두 상관관계 오차 값이 클수록 표적 오차 값이 크게 나타났다. 정현곡선 호흡 형태의 표적 움직임 크기가 20 mm 이상일 경우, 두 오차 값 모두 사이버나이프 제조사의 권고치인 1.5 mm 이상으로 측정되었다. 결 론 : 표적 움직임의 크기가 클수록 표적 오차 값과 상관관계 오차 값이 증가하는 경향이 있었으며, 정현곡선 호흡 형태보다 갑작스런 호흡 변화 형태에서 오차 값이 크게 나타났다. 호흡의 형태가 규칙적인 정현 곡선 형태더라도 표적의 움직임이 클수록 종양 추적 시스템의 정확도가 감소하는 것으로 판단할 수 있다. 사이버나이프 종양 추적 시스템의 알고리즘을 이용하여 치료 시행 시 환자의 기침 등으로 인하여 갑작스럽게 예측 불가능한 호흡 변화가 있는 경우 치료를 멈추고 내부 표적 확인 과정을 재실시 하여야 하며 호흡 형태를 재조정해야 할 필요가 있다. 치료 중 환자가 본인의 호흡 형태를 관찰 할 수 있는 고글 모니터 등을 착용하여 규칙적인 호흡 형태를 유도하는 것이 치료의 정확도는 향상될 수 있다고 판단된다.

• 대한간호학회지
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• 제25권3호
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• pp.457-471
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• 1995

This research was done to promote improvement of practical application of nursing diagnoses and to improve the quality of nursing. The subjects of this research were 156 second year students of C junior nursing college who were giving adult patient care. The nursing diagnoses of 312 reports were analyzed using NANDA. In these case reports only nursing diagnoses were considered, of which there were a total of 982. In the data analysis the 9H of the nursing students' nursing diagnoses matched with 105 NANDA nursing diagnoses, Of these, the most frequent diagnoses were pain(165, 17.48%), anxiety(101, 10.70%), alteration in nutrition(83, 8.79%) , sleep disturbance (67, 7.10%), in activity intolerance (67, 7.10%), ineffective breathing pattern(51,5.40%). The etiology for the students' nursing diagnoses were compared with NANDA's nursing diagnoses by frequency. The most frequent etiology for the nursing diagnoses of pain was a biological etiology(50, 31%), for anxiety, situation crisis(58, 57.43%), for alteration in nutrition, indigesion(23, 27.71%), for sleep disturbance, external etiology(25, 37.32%), for activity intolerance, immobile position(22, 32.84%), for ineffective breathing pattern, pain(35, 68.63%), and for ,impaired physical mobility, pain(31, 65.96%). The most frequent etiology for constipation was inadquate digestion of water and cellulose (16, 34.78%), for fluid volume felicity, loss of body fluid (21, 52.50%), for impaired skin integrity, external etilogy(16, 43.24%), for impaired physical mobility, pain(22, 62.86%) , for knowledge deficits, cognition disturbance(9, 27.27％), for ineffective air way clearance, secretion obstruction(14, 48.27%) , for impaired gas exchange, loss of transport ability of blood oxygen(9, 37.50%) , and for powerlessness, therapy environment (5, 22.73%). The number of nursing diagnoses by pattern was exchange(16), moving(6), feeling(4), choosing(4), relating(3), communication(1), perceiving(1), knowing(1), valuing(1).

• 대한간호학회지
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• 제23권4호
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• pp.569-584
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• 1993

This study was done to verify validity of nursing diagnoses related to difficulty in respiratory function. First, content validity was examined by an expert group considering the etiology and the signs / symptoms of three nursing diagnoses - ineffective airway clearance, ineffective breathing pattern, impaired gas exchange. Second, clinical validity was examined by comparing the frequencies of the etiologies and signs / symptoms of the three nursing diagnoses in clinical case studies with the results of the content validity. This study was a descriptive study. The sample consisted of 23 experts (professors, head nurses and clinical instructors) who had had a variety of experiences using nursing diagnoses in clinical practice, and 102 case reports done by senior student nurses of the college of nursing of Y-university. These reports were part of their clinical practice in the ICU. The instrument used for this study was a checklist for etiologies and signs and symptoms based on the literature, Doenges and Moorhouse (1988), Kim, McFarland, McLane (1991), Lee Won Hee et al. (1987), Kim Cho Ja et at. (1988). The data was collected over four month period from May 1992 to Aug. 1992. Data were analyzed using frequencies done with the SPSS / PC＋ package. The results of this study are summarized as follows : 1. General Characteristics of the Expert Group A bachelor degree was held by 43.5% and a master or doctoral degree by 56.5% of the expert group. The average age of the expert group was 35.3 years. Their average clinical experience was 9.3 years and their average experience in clinical practice was 5.9 years. The general characteristics of the patients showed that there were more women than men, that the age range was from 1 to over 80. Most of their medical diagnoses were diagnoses related to the respiratory. system, circulation or neurologic system, and 50% or more of them had a ventilator with intubation or a tracheostomy. The number of cases for each nursing diagnoses was : · Ineffective airway clearance, 92 cases. · Ineffective breathing pattern, 18 cases. · Impaired gas exchange, 22 cases. 2. The opinion of the expert group as to the classification of the etiology, and signs and symptoms of the three nursing diagnoses was as follows : · In 31.8% of the cases the classification of etiology was clear. · In 22.7%, the classification of signs and symptoms was clear. · In 17.4%, the classification of nursing interventions was clear. 3. In the expert group 80% or mere agreed to ‘dysp-nea’as a common sign and symptom of the three nursing diagnoses. The distinguishing signs and symptoms of (Ineffective airway clearance) were ‘sputum’, ‘cough’, ‘abnormal respiratory sounds : rales’. The distinguishing sings and symptoms of (Ineffective breathing pattern) were ‘tachypnea’, ‘use of accessory muscle of respiration’, ‘orthopnea’ and for (Impaired gas exchange) it was ‘abnormal arterial blood gas’, 4. The distribution of etiology, and signs and symptoms of the three nursing diagnoses was as follows : · There was a high frequency of ‘increased secretion from the bronchus and trachea’ in both the expert group and the case reports as the etiology of ineffective airway clearance. · For the etiologies for ineffective breathing pat-tern, ‘rain’, ‘anxiety’, ‘fear’, ‘obstructions of the tract, ca and bronchus’ had a high ratio in the ex-pert group and ‘decreased expansion of lung’ in the case reports. · For the etiologies for impaired gas exchanges, ‘altered oxygen -carrying capacity of the blood’ and ‘excess accumulation of interstitial fluid in lung’ had a high ratio in the expert group and ‘altered oxygen supply’ in the case reports. · For signs and symptoms for ineffective airway clearance, ‘dyspnea’, ‘altered amount and character of sputum’ were included by 100% of the expert group. ‘Abnormal respiratory. sound(rate, rhonchi)’ were included by a high ratio of the expert group. · For the signs and symptoms for ineffective breathing pattern. ‘dyspnea’, ‘shortness of breath’ were included by 100% of the expert group. In the case reports, ‘dyspnea’ and ‘tachypnea’ were reported as signs and symptoms. · For the sign and symptoms for impaired gas exchange, ‘hypoxia’ and ‘cyanosis’ had a high ratio in the expert group. In the case report, ‘hypercapnia’, ‘hypoxia’ and ‘inability to remove secretions’ were reported as signs and symptoms. In summary, the similarity of the etiologies and signs and symptoms of the three nursing diagnoses related to difficulty in respiratory function makes it difficult to distinguish among them But the clinical validity of three nursing diagnoses was established through this study, and at last one sign and symp-tom was defined for each diagnosis.

• 대한임상검사과학회지
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• 제39권3호
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• pp.264-270
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• 2007

Obstructive sleep apnea syndrome (OSAS) is defined by sleep apnea with decreased oxygen saturation, excessive snoring with daytime sleepiness, and frequent awakening during the night time sleep. The present study was performed to investigate how apnea-hypopnea, that possibly causes breathing disturbance during sleep, can affect sleep pattern in patients with OSAS. We included 115 patients (92 men, 23 women) who underwent a polysomnography from January 2006 to May 2007. As the frequency of sleep apnea-hypopnea increases, the proportion of non-rapid eye movement (REM) sleep (p<0.001), and stage I sleep (p<0.001) increased, while that of stage II sleep (p<0.001), stage III and IV sleep (p<0.01), and REM sleep (p<0.05) decreased. Furthermore, sleep apnea-hypopnea was closely correlated with REM sleep (r=0.314, p<0.001), stage I sleep (r=0.719, p<0.001), stage II sleep (p=-0.342, p<0.05), stage III and IV sleep (r=-0.414, p<0.001), and REM sleep (r=-0.342, p<0.05). Stage I sleep could account for the 51% of the variance of apnea-hyponea. Our study shows sleep apnea-hypopnea affects sleep pattern in pattern with OSAS significantly, and the change of stage I sleep is the most important factor in estimating the disturbance of sleep pattern.

• PNF and Movement
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• 제21권2호
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• pp.151-158
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• 2023

Purpose: This study aimed to examine the immediate effects of different breathing training techniques on diaphragm excursion and vital capacity in healthy adults. Specifically, the study focused on comparing respiratory exercise without PNF, bilateral pattern respiratory exercise, and bilateral pattern with spiral pattern respiratory exercise. Methods: Twenty-seven healthy adults in their 20s participated in the study. Diaphragm excursion and vital capacity were evaluated under three different conditions. A one-way repeated ANOVA was used to analyze the differences in diaphragm excursion and vital capacity among the interventions. Results: Statistically significant differences were observed in diaphragm excursion among the interventions, comparing respiratory exercise without PNF, bilateral pattern respiratory exercise, and bilateral pattern with spiral pattern respiratory exercise. Similarly, statistically significant differences were found in vital capacity among the interventions without PNF respiratory exercise, bilateral pattern respiratory exercise, and bilateral pattern with spiral pattern respiratory exercise. Conclusion: The study demonstrated that incorporating the spiral technique in respiratory exercise led to increased diaphragm excursion and lung capacity compared to other interventions. These findings suggest that PNF respiratory exercise combined with the spiral pattern may have clinical implications for the treatment of respiratory diseases. Further research is warranted to explore the long-term effects and clinical application of these approaches.

• 한국대기환경학회:학술대회논문집
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• 한국대기환경학회 2000년도 춘계학술대회 논문집
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• pp.245-246
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• 2000

공기중의 오염 입자가 인체에 얼마나 많은 영향을 미치는가는 흡입된 입자 (inhaled particles) 중에서 얼마나 많은 양이 폐 (lung)에 침전되는가와 밀접한 관계가 있다. 또한 정상 및 비정상 (diseased) 폐에서, 흡입된 입자의 침전 위치와 침전양 (deposition site and dose)은 입자의 크기와 호흡 양식(breathing pattern)에 따라 큰 차이를 보이며, 이런 차이는 흡입오염입자 (inhaled pollutant particles)에 의한 건강 위험도 평가 (health risk assessment) 및 흡입용 약물 (inhaled drug aerosols)의 치료효과(therapeutic effects) 평가 등에 큰 영향을 미친다. (중략)

• Journal of Chest Surgery
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• 제26권10호
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• pp.812-814
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• 1993

Six patients with flail chest were performed operative stabilization with Judet`s Struts.The indications of opertive stabilization were exploratory thoracotomy or laparotomy in 4 patients, and severe chest pain due to displaced ribs which deteriorated respiratory pattern and gas exchange in 2 patients. After operation, all patients became comfortable and complained less pain.Two patients restored spontaneous breathing without ventilator therapy and 2 patients were ventilated during 4 days and 5 days, respectively.There were no morbidity and mortality related to operative stabilization.

• 구강회복응용과학지
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• 제28권1호
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• pp.47-56
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• 2012

입술은 사람의 인상을 결정하는 중요한 부분중의 하나이다. 본 연구는 두부계측방사선사진을 이용하여 구호흡자와 비호흡자의 입술두께를 비교하여 구호흡과 하순 두께 변화와의 연관성을 알아보았다. 8세~18세인 아동 및 청소년 436명을 대상으로 두부방사선계측사진을 조사하였다. 전체 조사대상자를 구호흡 그룹과 비호흡 그룹으로만 나누어서 평균과 표준편차를 구한 결과 구호흡 그룹의 하순/상순 비율은 $1.13{\pm}0.14$, 비호흡 그룹의 하순/상순 비율은 $1.02{\pm}0.14$로 나타났다. Skeletal class에 따라 구분한 그룹의 각각의 평균과 표준편차를 살펴보면 skeletal class I은 $1.05{\pm}0.09$, skeletal class II는 $1.20{\pm}0.12$, skeletal class III는 $0.97{\pm}0.11$로 나타났다. 호흡양상에 따라 비교하였을 때 비호흡을 하는 그룹보다 구호흡을 하는 그룹에서 하순/상순 비율이 더 큰 값을 나타내어 하순의 두께가 더 두꺼운 양상을 보였다. Skeletal class에 따라서 비교하였을 때는 skeletal class II 그룹에서 하순/상순 비율이 가장 큰 값을 나타내어 하순의 두께가 가장 두꺼운 양상을 보였다.