• Archives of Plastic Surgery
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• 제37권1호
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• pp.71-74
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• 2010

Purpose: Nowadays spinal cord stimulator is frequently used for the patients diagnosed as complex regional pain syndrome. The lead is placed above the spinal cord and connected to the stimulation generator, which is mostly placed in the subcutaneous layer of the abdomen. When the complication occurs in the generator inserted site, such as infection or generator exposure, replacement of the new generator to another site or pocket of the abdomen would be the classical choice. The objective of our study is to present our experience of the effective replacement of the existing stimulation generator from subcutaneous layer to another layer in same site after the wound infection at inexpensive cost and avoidance of new scar formation. Methods: A 50-year-old man who was diagnosed as complex regional pain syndrome after traffic accident received spinal cord stimulator, Synergy$^{(R)}$ (Medtronic, Minneapolis, USA) insertion 1 month ago by anesthetist. The patient was referred to our department for wound infection management. The patient was presented with erythema, swelling, thick discharge and wound disruption in the left upper quadrant of the abdomen. After surgical debridement of the capsule, the existing generator replacement beneath the anterior layer of rectus sheath was performed after sterilization by alcohol. Results: Patient's postoperative course was uneventful without any complication and had no evidence of infection for 3 months follow-up period. Conclusion: Replacement of existing spinal cord stimulation generator after sterilization between the anterior layer of rectus sheath and rectus abdominis muscle in the abdomen will be an alternative treatment in wound infection of stimulator generator.

• Asian Journal for Public Opinion Research
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• 제8권3호
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• pp.297-323
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• 2020

The relationship between compliance with behaviors recommended to prevent the spread of COVID-19 and media exposure, negative emotions, and risk perception was examined using regression analyses of data from KAMOS, a nationally representative survey of South Korean adults. The strongest predictor of preventive behaviors in general was negative emotions, which had the largest βh (.22) among the independent variables considered. The eight negative emotions, identified using factor analysis of a series of 11 emotions, were anger, annoyance, fear, sadness, anxiety, insomnia, helplessness, and stress. Negative emotions themselves were influenced most strongly by the respondent's anxiety over social safety (βe=.286), followed by prediction of COVID-10 spread (β=.121, p<.001) and perceived risk of COVID-19 infection (β=.70, p=.023). Females (β=-.134) and those who felt less healthy (βo=-.097) experienced more negative emotions. Media exposure and increased media exposure both have significant relationships with negative emotions and both a direct and indirect impact on the adoption of preventive measures. Women, older people, and healthier people perceived greater risks and engaged in more preventive behaviors than their counterparts.

• The Plant Pathology Journal
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• 제16권1호
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• pp.19-24
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• 2000

The direct effects of acute $\textrm{O}_3$ on the growth, sporulation and infection of Pyricularia grisea, rece blast pathogen, were investigated to understand the interactions between ozone and the pathogen. Acute exposure of 200 nl $\textrm{l}^{-1}$ ozone for 8 h significantly reduced conidia germination on water atar. Ozone exposure of 200 nl $\textrm{l}^{-1}$ for 8h per day for 5 days had no effect on increase in colony diameter, but severely damaged actively growing aerial mycelia. However, the damage to mycalia was recovered during the following 16 h exposure of unpolluted air. Conidial production was also stimulated by the acute ozone exposure for 5 days. The conidia exposed to the acute ozone for 5 days normally germinates but slightly reduce appressoria formation on rice leaf. However, the conidia produced by artificial stimulation under the same ozone concentration for 10 days showed significant reduction in appressorea for mation on a hydrophobic film. This study suggests that the acute ozone could ingibit appressoria formation as well as vegetative growth of the pathogen, resulting in decrease in rece blast development in the field during summer when high ozone episodes could occur occasionally.

• Asian Pacific Journal of Cancer Prevention
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• 제13권11호
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• pp.5489-5495
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• 2012

Cervical cancer is a serious public health problem in Thailand. We investigated possible risk factors for cervical cancer including HPV infection, p53 polymorphism, smoking and reproductive history among women in Northeast Thailand using a case control study with 177 cases and age-matched controls. Among the HPV carriers, a significantly increased risk for cervical cancer with an OR of 36.97(p<0.001) and an adjusted OR of 38.07(p<0.001) were observed. Early age at first sexual exposure, and multiple sexual partners increased the risk of cervical cancer with ORs ranging between 1.73-2.78(p<0.05). The interval between menarche and first sexual intercourse <6 years resulted in a significant increase in the risk for cervical cancer with ORs ranging between 3.32-4.09 and the respective adjusted OR range for the 4-5 and 2-3 year-old groups were 4.09 and 2.92. A higher risk was observed among subjects whose partner had smoking habits, whether currently or formerly; with respective ORs of 3.36(P<0.001) and 2.17(p<0.05); and respective adjusted ORs of 2.90(p<0.05) and 3.55(p<0.05). Other smoking characteristics of the partners including smoking duration ${\geq}20$ years, number of cigarettes smokes ${\geq}20$ pack-years and exposure time of the subject to passive smoking ${\geq}5$ hrs per day were found to be statistically significant risks for cervical cancer with adjusted ORs of 3.75, 4.04 and 11.8, respectively. Our data suggest that the risk of cervical cancer in Thai women is substantially associated with smoking characteristics of the partner(s), the interval between menarche and first sexual intercourse as well as some other aspects of sexual behavior.

• Asian Pacific Journal of Cancer Prevention
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• 제13권5호
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• pp.2069-2079
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• 2012

Background and Objective: A comprehensive overall review of gastric cancer (GC) risk and protective factors is a high priority, so we conducted the present study. Methods: Systematic searches in common medical electronic databases along with reference tracking were conducted to include all kinds of systematic reviews (SRs) about GC risk and protective factors. Two authors independently selected studies, extracted data, and evaluated the methodological qualities and the quality of evidence using R-AMSTAR and GRADE approaches. Results: Beta-carotene below 20 mg/day, fruit, vegetables, non-fermented soy-foods, whole-grain, and dairy product were GC protective factors, while beta-carotene 20 mg/day or above, pickled vegetables, fermented soy-foods, processed meat 30g/d or above, or salty foods, exposure to alcohol or smoking, occupational exposure to Pb, overweight and obesity, helicobacter pylori infection were GC risk factors. So we suggested screening and treating H. pylori infection, limiting the amount of food containing risk factors (processed meat consumption, beta-carotene, pickled vegetables, fermented soy-foods, salty foods, alcohol), stopping smoking, avoiding excessive weight gain, avoidance of Pb, and increasing the quantity of food containing protective components (fresh fruit and vegetables, non-fermented soy-foods, whole-grain, dairy products). Conclusions: The conclusions and recommendations of our study were limited by including SRs with poor methodological bases and low quality of evidence, so that more research applying checklists about assessing the methodological qualities and reporting are needed for the future.

• International Journal of Oral Biology
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• 제46권1호
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• pp.60-65
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• 2021

Dental health care workers (DHCW) are at a risk of occupational exposure to Helicobacter pylori from the aerosolized oral biofilms and saliva of patients. We designed this study to investigate the prevalence of H. pylori in the oral biofilms of a group of dental and non-dental undergraduates from Sri Lanka. After obtaining informed consent, oral biofilms were collected from 38 dental undergraduates (19 males and 19 females) undergoing clinical training and 33 non-dental undergraduates (14 males and 19 females). The participants were in the age range of 22-27 years and had healthy periodontium. Total DNA from the oral biofilms were extracted, and H. pylori DNA was detected using polymerase chain reaction (PCR) amplification of 16S rRNA gene of H. pylori using JW22-JW23 primers, and the results were confirmed using PCR amplification of H. pylori-urease specific HPU1-HPU2 primers. Out of 71 participants, 11 (28.95%) dental and 3 (9.09%) non-dental undergraduates had H. pylori in their oral biofilms indicating an overall prevalence rate of 19.72% (14/71). Thus, the prevalence of H. pylori in oral biofilms was significantly higher in dental undergraduates than in non-dental undergraduates (p < 0.05). An odds ratio of 4.07 indicated that dental undergraduates were four times more likely to harbor H. pylori in their oral biofilms than non-dental undergraduates. Foregoing data support the fact that there may be greater occupational risk of exposure to H. pylori for dental undergraduates during clinical training than that for non-dental undergraduates, warranting meticulous infection control practices during clinical dentistry.

• 한국컴퓨터정보학회논문지
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• 제24권3호
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• pp.175-179
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• 2019

This study is a descriptive research of paramedic students who could be exposed to blood and body fluids during the clinical practicum to analyze the risk factors. From June 1 to June 30, 2018, 172 paramedic students who attended the University in Jeolla-do region were analyzed. The collected data were analyzed by using the SPSS WIN 21.0 program. The general characteristics of subjects, the exposure level of blood and body fluids, and etc were obtained for frequency and percentage analysis. The study found that 72.7 percent of students had experience to blood or body fluids exposure during the clinical practicum. Except for any needle injury, 70.4 percent of student were exposed to blood or body fluids. 28.8 percent of them which was the highest percentage of injection injury were exposed during the venous blood draw. 36.5 percent of exposure were related to wound dressings which was the highest percentage related to clinical procedures. 71.2 percent of students mentioned that they did not report this exposure because 68.5 percent students thought that it has no danger. According to the survey on hepatitis B, 50.6% of students had antibodies, but 31.8 percent of students did not confirm that the antibodies were formed. Even though paramedic students do practical training in a hazardous environment with repeated exposure to blood and body fluids due to the nature of job characteristics, the systemic infection control education program is insufficient. In order to prevent exposure and to protect paramedic students who do practical training with patients, it is necessary to make more systematic and active efforts in the continuous monitoring and the preventive education.

• 임상간호연구
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• 제15권2호
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• pp.115-126
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• 2009

Purpose: The purpose of this study was to assess the frequency and characteristics of occupational blood and body fluid exposure for operating room personnel during surgical procedures and identify risk factors. Methods: A self-report questionnaire was used to survey 519 operating room personnel who participated in 132 surgeries in an acute care hospital in Seoul between April 12 and 20, 2006. Results: The response rate was 82% (530/646) and analyzed total 519 except for improper 11 questionnaires. Exposure rate was 45.5% (60/132) during operations and 20.4% (106/519) for operating room personnel. By job categories, the exposure rate was as follows; anesthesiologists and nurses 31.2% (44/141), operators and assistants 22.1% (32/145), circulating nurses 12.0% (11/92), scrub nurses 11.4% (14/123). The mucous membrane-eye exposure with a high risk of transmitting infection was 6.6% (7/106) and the most frequent route of exposure was blood and body fluid touching unprotected skin. In multivariate analysis, the risk factors of exposure were services, duration of operation, a patient who had a peripheral arterial catheter line, and job category. Conclusion: Educational programs and appropriate use of personal protective equipment are necessary to prevent operating room personnel from being exposed to blood and body fluid.

• 농촌의학ㆍ지역보건
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• 제9권1호
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• pp.56-66
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• 1984

Giardia lamblia is a pathogenic flagellate causing intestinal disorders such as diarrhea, abdominal pain and malabsorption of nutrients. Giardia is mainly infected by the ingestion of contaminated foods per os. Craun (1979) has recently reported that mass infection of this flagellate through the contaminated water supply systems is one of public health hazards. Also, so-called traveller's diarrhea is sometimes caused by Giardia infection (CDC, U.S.A., 1971). However, a few epidemiological studies figuring out the mode of infection or control measures of Giardia infection has been done so far in Korea. The present study was aimed to know the prevalence of Giardia infection in several Korean populations, detectability of this flagellate in water systems and the viability of the cysts against sewages and disinfectants applying to drinking water. In the present study, 388 stool specimens from orphanage children in Chun-joo, Chung-joo, On-yang and Chun-an areas and 538 stool specimens from inhabitants in Woo-do, In-chon, and Chun-joo were examined by formalin-ether concentration technique to detect out Giardia cysts. On the other hand, water samples from 14 sites of Han River and its tributaries were collected in May through July, 1984. Fifty liter of water sample in each sampling site was then filtered through water filtering system deviced by U.S. Environmental Proutection Agency and the sediments rinsed out from the thread rolls, a part of water filtering system, were examined to detect out the Giardia cysts. In order to observe the viability of Giardia cysts in the sewage samples, the cysts were treated in it at $4^{\circ}C$ or $25^{\circ}C$ for 7 through 28 days. For this purpose, the cysts were also exposed to various concentrations of disinfectants such as chlorine, iodine and ozone gas for proper time intervals. After treatment, the viability test of the Giardia cysts were carried out by method of Rice and Schaefer (1981) with minor modification. The results obtained in this study were as follows : 1) The detection rates of G lamblia cysts in the stool specimens were 18.3% in orphans and 4.3% in general examinees. 2) The prevalences of Giardia Infection were higher in the young age groups than in-adults. The highest positive rate was 18.4% in the age group less than 10. 3) Of 14 water specimens sampled from Han River system and its tributaries around the Seoul area, the Giardia cysts were detected from 4 samples, and no cyst was found in the water supply systems. 4) The cysts treated in the sewage survived for 28 days at $4^{\circ}C$ and for 13 days at $25^{\circ}C$. 5) The cysts were completely destroyed within 60 minutes by exposure to 8 mg/l of residual chlorine at 4g and within 30 minutes by exposure to the same concentration of chlorine at $25^{\circ}C$. 6) The cysts were all dead when exposed to 1 mg/1 of iodine for 60 minutes at $4^{\circ}C$ or $25^{\circ}C$. 7) The cysts were destroyed after 10 minute exposure in 0.15 mg to 0.25mg of residual ozone gas per liter. Summarizing the above results, it is considered that Giardia infection is regarded as water-borne disease and the cysts are able to be controlled by the application with the disinfectants in the water supply systems.

• 한국어병학회지
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• 제11권1호
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• pp.51-60
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• 1998

본 연구는 내수면 양식 어류에 백점충, Ichthyophthirius multifiliis를 인위 감염시켜 감염 특성 및 어체내 충체 발달상을 밝히고자 하였다. 어종별(무지개 송어, 메기, 이스라엘 잉어), 수온별($15^{\circ}C$, $18^{\circ}C$, $21^{\circ}C$) 및 충체 발달 단계별(trophont, protomont, theront) 인위 감염 시험 결과, 어종별로는 무지개 송어 시험구에서, 수온별로는 $18^{\circ}C$ 시험구에서 그리고 충체 발달 단계별로는 theront 시험구에서 양성적인 인위 감염을 확인할 수 있었다. 그리고 theront 농도별에 있어서는 어체당 1000개체의 theront가 감염을 양성적으로 유도할 수 있는 것으로 조사되었으며 어체당 1500개체 이상의 theront는 무지개 송어치어에 100%의 감염을 유도하였다. 수온 $18^{\circ}C$의 인위 감염된 무지개 송어에서 7일 동안 어체내 충체의 발달 과정을 조사한 결과, 충체는 시간이 경과함에 따라 연속적인 발달을 행하여 크기가 증대되었으며 감염 3일째부터는 성숙되는 것으로 확인되었다. 그리고 총체의 형태학적 변화는 감염 2일째에는 구부장치가 기능적으로 발달하기 시작한 것을 볼 수 있었고, 감염 4일째부터는 수축포가 현저히 발달되기 시작하였으며 감염 6일째는 이들의 수가 현저히 증가한 것을 확인할 수 있었다. 그리고 감염 기간이 경과함에 따라 충체는 숙주의 아가미 일차 새변의 입새 동맥쪽으로 이동하는 경향을 나타내었다.