• Title/Summary/Keyword: Ventilation frequency

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A Study on the Working Clothes in the Changwon National Industrial Complex -Considering Clothing Performance and Motion Factors in Work Places- (창원국가산업공단 근로자들 작업복 착용실태에 관한 연구 -작업분야별 작업복 기능성 및 동작요인 중심으로-)

  • Park, Gin-Ah;Bae, Hyun-Sook
    • Journal of the Korean Society of Clothing and Textiles
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    • v.32 no.10
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    • pp.1571-1583
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    • 2008
  • The study aimed to investigate the actual condition of working clothes in the Changwon National Industrial Complex and to analyze the industrial workers' satisfaction with and preference to the working clothes in terms of the clothing performance and work motion factors. 1 major companies in machinery, automotive, industrial engineering, shipbuilding and rolling stock industries located in the industrial complex were selected as the subject firms. Approximately 900 workers responded to the questionnaire designed for the research and the results derived from the research were as follows. (1) The subject employees were divided into 4 work groups, i.e. the $1^{st}$ work group: managerial, general affairs, sales, production planning; the $2^{nd}$ group: quality assurance, material planning and distribution, product inspection; the $3^{rd}$ group: electric, facilities, machinery, vehicles; and the $4^{th}$ group: cutting, pressing, rolling, welding and coating. (2) The significant work environmental factors considered by all work groups were air ventilation, noise and dust factors and in particular, the most dissatisfied factors evaluated by manufacture workers were insulation, noise, dust and vibration. (3) According to the employees' work motion evaluation, the work motion diversity and frequency increased in proportion to the degree of work intensity. Besides, manufacture workers more frequently wore the working clothes even during the off-duty hours comparing to the evaluation of the other work groups. (4) The most important clothing performance factors considered by manufacture work groups were perspiration absorption, stretch, air permeability, tactile sense softness, soil proof in order.

Relationship between Intake and Output Balance and Body Weight Changes in Intensive Care Unit Patients (중환자의 체중변화와 섭취량과 배설량 균형과의 관계)

  • Kim, Hwa-Soon;Lee, Young-Whee;Lee, Ji-Soo;Lee, Jin-Young;Choo, Sang-Soon;Lee, Bo-Gyeong
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.18 no.2
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    • pp.168-176
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    • 2011
  • Purpose: The purpose of this study was to identify differences between intake and output balance and body weight changes and to identify factors related to differences in critically ill patients. Methods: The participants for this descriptive correlational study were 65 medical surgical ICU patients. The data were collected from patient medical records. Results: Mean age of the patients was 63.80 years (${\pm}15.21$). Body weight changes for 48 hours averaged 281.54g (${\pm}2210.48$). I&O balance for 48 hours corrected for insensible loss averaged 398.1ml. Differences ranged from 45mL to 7,535mL. In the distribution of absolute difference between body weight change and intake and output balance, only 40% of the patients were within less than 1,000 mL. Factors relating to accurate measure of intake and output were ventilation methods, respiration patterns, and edema status. Conclusion: Although mean values of weight change and I&O balance for all patients were very close, the range of differences was very wide indicating that, for many patients, intake and output is not an appropriate indicator of body fluid balance. Therefore, because of the frequency fever and/or hyperventilation, nurses need to use caution when using intake and output balance only to estimate current body fluid status for critically ill patients.

The Sanitation Level and Culinary Environment of Using Fishery Products for the Housewives in the Seoul Metropolitan Area

  • Rha, Young-Ah;Lee, Woo-Sik;Hong, Sang-Pyo;Kwon, Woo-Taeg
    • Culinary science and hospitality research
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    • v.20 no.5
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    • pp.43-51
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    • 2014
  • The purpose of this study is to assess the sanitation level and purchase behavior of fishery products, and to identify management conditions of bad smell from cooking fish at home as perceived by housewives in a metropolitan area. Frequency analysis, descriptive analysis, and cross-tabulation analysis were employed as statistical techniques for current study. Total 270 were collected from housewives. The statistical variables included the kinds of cooking oil and the age of housewives, the types of hoods for fish roasting, the types of covers for fish grills, the number of family, the ventilation methods, and the maintenance of kitchen utensils based on family incomes, and they showed statistically significant differences(p<.05). Furthermore, the housewives whose sanitary cognition level for fishery products was high, the housewives whose level of purchase attitude was relatively high, and the housewives who utilized specialized kitchen utensils demonstrated statistically significant differences(p<.05). It resulted from the assessment of such actual conditions as difference of culinary environment according to the sanitation level of fishery products, the level of purchase attitude, and whether the housewives utilized special kitchen utensils or not. The more efforts were proved from those who had the intentions for improvement of an amenable culinary environment at homes, according to the higher income obtainers, the smaller nuclear family, the younger generation, whether the housewives utilized special kitchen utensils or not, and those who had the higher sanitary cognition level of fishery products. The above results were derived from an individual lifestyle or a dietary lifestyle, but eventually this seems to be related with the propensity and values hierarchy of individuals.

A Case of Neonatal Tetanus Cured with Neuromuscular Blocking Agent and Ventilatory Support (근이완제 및 인공 환기요법으로 치료한 신생아 파상풍 1례)

  • Lee, Hyeon Joo;Jeong, Ji Young;Jung, Sa Jun;Choi, Yong Mook;Bae, Chong Woo
    • Clinical and Experimental Pediatrics
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    • v.46 no.2
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    • pp.192-194
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    • 2003
  • A neonate born at 38 gestational weeks was admitted due to generalized tonic-clonic seizure and cyanosis. The neonate was born six days previously at home through normal delivery and the umbilical cord was cut using scissors sterilized in boiling water. The neonate weighed 3,180 g at admission. Physical examination revealed cyanosis, opisthotonus, trismus and reactive muscle spasms. Laboratory exam, brain sonogram and EEG showed no significant abnormal findings. Based on her history and physical examination, the neonate was diagnosed with tetanus and put in an incubator isolated in a quiet, dark room. Treatment with tetanus human immunoglobulin along with antibiotics (penicillin G) were started immediately, and mechanical ventilation, administration of neuromuscular blocking agent and muscle relaxant were also started off. The frequency of seizure episode decreased gradually, and on the 32nd hospital day, mechanical ventilatory support was stopped along with extubation two days later. Thereafter, the neonate was in continuous generalized hypertonic state and showed feeding difficulty, but there was gradual improvement. She was dismissed on the 49th hospital day and is currently under OPD follow-up, doing well with no special problems. Respiratory management is critical to neonatal tetanus. We report here a case of tetanus treated with inhibition of self-respiration, neuromuscular blocker and application of ventilator, and present this method as a useful direction for future treatment of neonatal tetanus.

Characteristics of conductive rubber belt on the abdomen to monitor respiration (호흡 감지를 위한 복부 부착형 전도성 고무소자의 계측특성)

  • Kim, Kyung-Ah;Kim, Sung-Sik;Cho, Dong-Wook;Lee, Seung-Jik;Lee, Tae-Soo;Cha, Eun-Jong
    • Journal of Sensor Science and Technology
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    • v.16 no.1
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    • pp.24-32
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    • 2007
  • Conductive rubber material was molded in a belt shape to measure respiration. Its resistivity was approximately $0.03{\;}{\Omega}m$ and the resistance-displacement relationship showed a negative exponent. The temperature coefficient was approximately $0.006{\;}k{\Omega}/^{\circ}C$ negligible when practically applied on the abdomen. The conductive rubber belt was applied on a normal male's abdomen with the dimensional change measured during resting breathing. The abdominal signal was differentiated ($F_{m}$) and compared with the accurate standard air flow rate signal ($F_{s}$) obtained by pneumotachometry. $F_{m}$ and $F_{s}$ differed in waveform, but the start and end timings of each breaths were clearly synchronized, demonstrating that the respiratory frequency could be accurately estimated before further processing of $F_{m}$. $F_{m}-F_{s}$ loop showed a nonlinear hysteresis within each breath period, thus 6 piecewise linear approximation was performed, leading to a mean relative error of 14 %. This error level was relatively large for clinical application, though customized calibration seemed feasible for monitoring general variation of ventilation. The present technique would be of convenient and practical application as a new wearable respiratory transducer.

A case of Fulminant Mycoplasma Pneumonia Complicated with ARDS and Hemolytic Anemia (급성 호흡곤란 증후군과 용혈성 빈혈을 동반한 전격성 Mycoplasma 폐렴 1예)

  • Kwag, Jae-Sik;Ko, Tae-Young;Chung, Byung-Sun;Lee, Sung-Bae;Oh, Kyung-Suk;Park, Se-Jong;Kim, Myung-Sun
    • Tuberculosis and Respiratory Diseases
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    • v.45 no.3
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    • pp.636-642
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    • 1998
  • The frequency of fulminant peumonia due to Mycoplasma pneumoniae is relatively rare despite the high prevalence of Mycoplasma species infection in the general population. We report a case of mycoplasma pneumonia complicated with severe ARDS, overt hemolytic anemia and hepatitis. He had high titers of antimycoplasma antibody and cold agglutinin. Despite erythromycin administration, the pneumonic infiltration on chest radiography was not resolved, and mechanical ventilation was needed for 16 days. During the therapeutic course, his hemoglobin decreased. After the administration of prednisolone, his hemoglobin increased and pneumonic infiltration was totally resolved. He had a progressively favorable course and could be discharged in relatively good clinical condition.

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Airborne Fungi Concentrations and Related Factors in the Home (가정 내 부유 진균의 농도와 관련 요인)

  • Cho, YongMin;Ryu, SeungHun;Choi, Min Seok;Seo, SungChul;Choung, Ji Tae;Choi, Jae Wook
    • Journal of Environmental Health Sciences
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    • v.39 no.5
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    • pp.438-446
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    • 2013
  • Objectives: This study was performed in order to determine airborne fungi levels in homes and find related factors that may affect airborne fungi concentration. Methods: Fifty homes were study subjects for measuring airborne fungi. For sampling airborne fungi, the impaction method on agar plates was used and samples were counted as colony forming units per cubic meter of air ($CFU/m^3$). In addition, information regarding housing characteristics and atopic disease in each home were collected via questionnaire. Results: The geometric means (GM) of airborne fungi concentrations in fifty living rooms and bedrooms were 68.03 and 62.93 $CFU/m^3$, respectively. The GM of airborne fungi concentration in atopy homes was 78.42 $CFU/m^3$. This was higher than non-atopy homes' 54.34 $CFU/m^3$ (p-value=0.051). In the results of the multiple regression analysis, outdoor airborne fungal concentration proved a strong effective factor on indoor airborne fungal concentration. Also, construction year, floor area of house, indoor smoking and frequency of ventilation were factors that showed a significant association with indoor airborne fungi concentration. Conclusions: The results of this study show that some housing and living characteristics may affect the development and increase of airborne fungi. In addition, exposure to airborne fungi may be a risk factor for the prevalence of childhood atopic diseases.

A Survey on Riding Characteristics and Helmet Wearing Conditions of Bicycle and PMV(Personal Mobility Vehicle) Riders (자전거 및 PMV(Personal Mobility Vehicle) 사용자의 주행 특성 및 헬멧 착용 실태 조사)

  • Kim, In Hwa;Choi, Kueng Mi;Jun, Jung Il
    • Fashion & Textile Research Journal
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    • v.20 no.1
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    • pp.63-74
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    • 2018
  • The purpose of this study is to investigate the differences in riding characteristics and helmet wearing conditions between bicycle and PMV riders so that the basis data necessary for the development of suitable helmets for each group is provided. For this purpose, riding characteristics and helmet wearing conditions of bicycle and PMV users were investigated using online survey method and then the survey results were interpreted by in-depth interview conducted for bicycle and PMV users. The online survey results showed that the PMV group showed shorter driving distance and more driving frequency than bicycle group. This short driving distance was due to the limitation of battery capacity of PMVs. Helmet wearing rate was significantly lower in PMV group than in bicycle group, which was associated with relatively low chances to drive long distance on the motorway. In the PMV group, the 'urban helmets' were mainly used, in which the appearance of helmet was priorized, but in the bicycle group, the 'road cycle helmets' were mainly used, in which the light weight or ventilation were priorized. Urban helmets caused stronger pain and more fitting problems than road cycle helmets because the head shapes of Koreans were not properly applied to the helmet design. Since the fitting problem and pain intensity were the important causes that making PMV users not wear the helmets, it is necessary to develop the urban helmets reflecting the head shapes of Koreans in order to increase the helmet wearing rate of the PMV users.

A Study of Efficient Floor Planning and Facility Improvement for Physical Therapy Room of Domestic Long-term Hospitals (국내 요양병원의 물리치료실의 효율적 평면계획 및 시설개선에 관한 연구)

  • Chung, Kwang-Ho
    • Journal of The Korean Digital Architecture Interior Association
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    • v.11 no.4
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    • pp.5-11
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    • 2011
  • The present study investigated the actual conditions of physical therapy rooms at long-term hospitals in Korea and conducted a comparative analysis to develop an efficient floor plan and facility improvement measures. 1. At hospitals surveyed, physical therapy services were used at a high frequency but they did not have enough space for rehab treatment and long paths of patient flow were found to make patient management inconvenient. Therefore, physical therapy units should be conveniently located both in terms of distance and direction so as to be accessible from patient rooms or wards. The space should be organized in a concentrated layout for efficiency of physical therapy, and floor planning for therapy units should ensure the best possible viewing angle to therapists. 2. With regard to the disease characteristics of patients, many physical therapy rooms were in difficult circumstances because of poor facilities, so they need to secure skilled personnel, supplement apparatuses and equipment and have rooms for functional recovery, hydrotherapy and operation treatment. In addition, each of the curtained or partitioned areas for treatment should be set up with consideration for the amount of space taken up by medical equipment. The area under each bed should be designed for patient convenience so that it can be used as storage space for patient's belongings and shoes. 3. Patients complained about the lack of physical therapy space, resting places or exercise areas and demanded the expansion of rehab programs and facilities. Physical therapy facilities need to be improved for patient privacy and effective natural ventilation. 4. At most of the long-term hospitals surveyed, physical therapy units were found to have small areas and treatment equipment and devices were insufficient compared to the number of patients. Therefore, it is required to secure more space (at least 138.24 sq. meters per 100 beds) and improve facilities for better physical therapy services.

Risk Factors of Carbapenem-resistant Enterobacteriaceae Acquisition at a Community-based Hospital (지역기반 상급종합병원 내 카바페넴 내성 장내세균 획득에 관한 위험인자)

  • Lee, Yeonju;Kang, Ji Eun;Ham, Jung Yeon;Lee, Ja Gyun;Rhie, Sandy Jeong
    • Korean Journal of Clinical Pharmacy
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    • v.30 no.2
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    • pp.120-126
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    • 2020
  • Objective: The rising number of carbapenemase-resistant Enterobacteriaceae (CRE) cases has become a concern worldwidely. This study investigated patient characteristics with CRE and analyzed the risk factors associated with its acquisition. Methods: A retrospective review of the electronic medical records of the Kangbuk Samsung Medical Center from May 2016 to April 2019 was performed. The inclusion criterion was hospitalized patients aged ≥18 years with confirmed CRE acquisition. Patients were divided by CRE acquired and non-required patients. CRE acquired patients were those with CRE confirmed by their active surveillance cultures, while non-acquired patients were those with carbapenemase-sensitive Enterobacteriaceae (CSE). If CRE was isolated more than once during hospitalization, only the first isolation was used for data analysis. Patient characteristics, antibiotic used, and the duration of use were compared between two groups using univariate analysis, and the risk factors associated with CRE were analyzed using multiple logistic regression analysis. Results: Among the 73 CRE acquired patients, 44 (60.3%) were positive for carbapenemase-producing Enterobacteriaceae (CPE). Infection from Klebsiella pneumonia (42 cases, 57.5%), Escherichia coli (17 cases, 23.3%), and Enterobacter cloacae (5 cases, 6.8%). The risk of CRE acquisition was significantly increased by 4.99 times [confidence interval (CI), 1.40-17.78; p=0.013] with mechanical ventilation, 3.86 times (CI, 1.59-9.36; p=0.003) with penicillin administration, and 21.19 times (CI, 6.53-68.70; p<0.001) with carbapenem administration. Conclusions: Proper antibiotic use including the selection, frequency, and duration, and patients on mechanical ventilators need close monitoring.