• Journal of Clinical Nutrition
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• 제10권2호
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• pp.51-55
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• 2018

Purpose: This study was conducted to assess how extreme obesity affects 30-day mortality in this patient group. Methods: A total of 802 patients who underwent emergency gastrointestinal surgery from January 2007 to December 2017 were retrospectively reviewed. Patients were divided into three groups according to their body mass index (BMI): group 1, normal weight (BMI: $18.5{\sim}22.9kg/m^2$); group 2, overweight (BMI: $23.0{\sim}29.9kg/m^2$ ); and group 3, obesity ($BMI{\geq}30kg/m^2$). Patients with a BMI under 18.5 were excluded from the analysis. Chi-squared test, Fisher's exact test, Kaplan-Meier survival analysis, and the log-rank test were used to assess and compare 30-day mortality rates between groups. Results: The mortality rates of group 1, group 2, and group 3 were 11.3%, 9.0%, and 26.9%, respectively (P<0.017). The mortality rate did not differ significantly between group 1 and 2 (11.3% vs. 9.0%; P=0.341), but group 1 and 2 showed better survival rates than group 3 (11.3% vs. 26.9%; P=0.028, 9.0% vs. 26.9%; P=0.011). Kaplan-Meier survival analysis revealed that group 3 had higher mortality than the other two groups (P=0.001). Conclusion: Obesity ($BMI{\geq}30kg/m^2$) was one of the risk factors influencing critically ill patients who underwent emergency surgery.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume I
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• pp.463-466
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• 2006

During Mid October of 2005 a mass mortality of the corals occurred surrounding Con Dao Islands (South Vietnam) where is the recognized as one of the most famous marine parks of Vietnam. Results from the field survey in October 2005 showed that the mass mortality of corals and benthos focused only on the North-West of the islands whereas there was almost no death recorded in the South - East parts. Based on field data it was assumed that an overlap between high water temperature ($>30^{\circ}C$) and low salinity (<25%o) during short term was the impact causing the situation. In this paper, we try to explain this phenomenon based on the hydrographical view together with analyzing ocean colour images. A coral bleaching warning system also is proposed for Condao site.

• The Korean Journal of Medicine
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• 제93권6호
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• pp.548-555
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• 2018

목적: 혈액투석 환자에서 체수분 상태는 중요한데 혈액투석 이후의 과수분 상태는 고혈압, 부종, 심혈관계 합병증을 유발할 수 있다. 혈액투석 환자의 근육량 평가 및 체수분 상태를 측정할 수 있는 BIA 검사를 이용하여 혈액투석 환자에서 이환율, 생존율과 관련된 인자를 알아보고자 하였다. 방법: 본 연구는 후향적 연구로 2010년 1월부터 2015년 5월 30일까지 BIA를 측정한 말기 신부전으로 진단받고 투석을 3개월 이상 시행한 환자를 대상으로 하였으며, 2017년 6월 30일까지 추적 관찰하였다. 혈액투석 환자에서 시행하는 기본 혈액 검사와 BIA data (ECW, ICW, TBW, SLM, FFM, SMM 등)를 참조하여 환자의 이환율, 생존율 등을 분석하였다. 결과: 사망군과 생존군에서 SLM, SMM, FFM의 차이는 없었다. 생존군에서 사망군보다 나이, C-반응단백 수치가 낮았고, 혈청 알부민, 부갑상샘호르몬, 인이 높았으며, 총 체액량(TBW) 중 세포외액량(ECW)의 비율은 사망군에서 좀 더 높은 결과를 보였다($0.39{\pm}0.01$ vs. $0.40{\pm}0.01$; p < 0.05). 과수분군을 ECW/TBW ratio > 0.4로 정의하였을 때 Kaplan-Meier 생존분석에서 과수분군에서 통계적으로 유의하게 사망률이 높았다. 결론: 혈액투석 환자에서 BIA로 측정한 근육량 감소과 과수분 상태는 환자의 사망률과 이환율과 관련된 중요한 인자로 생각되며, 근육량 감소보다는 과수분 상태가 사망률과 좀 더 밀접한 관련이 있을 것으로 생각된다.

• 환경생물
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• 제31권4호
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• pp.340-346
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• 2013

대구의 동남부지역에 위치한 망월지에서 2007년부터 2009년 사이에 일어난 두꺼비 유생의 집단폐사에 관한 연구이다. 망월지두꺼비를 대상으로 미생물학적 조직학적 검사를 시행하여 Aeromaona hydrophila를 분리해낼 수 있었다. A. hydrophila는 수계환경에 광범위하게 분포하는 기회감염균이다. 2007년~2009년 상승된 기온변화가 망월지내의 수온을 상승시킴으로서 어패류 및 양서류의 병원성 세균인 A. hydrophila의 급속한 증식이 유발되어 두꺼비유생을 감염시켜 집단폐사로 이어진 것으로 사료된다.

• Journal of Preventive Medicine and Public Health
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• 제31권4호
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• pp.604-615
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• 1998

Although previous studies revealed the association of physical activity with mortality rate, it is unclear whether there is a linear trend between physical activity and mortality rate. In this study, the association of physical activity with the risk of all-cause mortality was analysed using Cox's proportional hazard model for a cohort of 14,204 healthy Korean men aged 40-59 years followed up for 4 years(Jan. 1993-Dec. 1996). Physical activity and other life style were surveyed by a postal questionnaire in December 1992. Total of 14,204 subjects were grouped into quartiles by physical activity. Using death certificate data, 123 deaths were identified. The second most active quartile had a lowest mortality .ate with relative risk of 0.44(95% C.I. : 0.23-0.84) compared with most sedentary quartile, showing a J-shape pattern of physical activity-mortality curve. By examining the difference in proportion of cause of the death between most active quartile and the other quartiles, there was no significant difference of proportional mortality from cardiovascular deaths, cerebrovascular deaths or deaths from trauma. The covariates were stratified into two group between which the trend of RR was compared to test the effect modification. There was no remarkable effect modification by alcohol intake, smoking, body mass index, calorie consumption, percent fat consumption. In conclusion, moderate activity was found to have more protective effect on all-cause mortality than vigorous activity and that the J-shape pattern of physical activity-mortality curve was not due to the difference of mortality pattern or effect modification by alcohol intake, smoking, body mass index, calorie consumption and percent fat consumption.

• Journal of Obesity & Metabolic Syndrome
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• 제27권4호
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• pp.201-202
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• 2018

• 한국수산과학회지
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• 제24권1호
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• pp.52-58
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• 1991

1988년 여름철의 장기간 가뭄 및 고수온으로 남해안 일원에서 우렁쉥이 대량폐사가 일어났으나 폐사체의 대부분이 2년산인 것이 특이하여 그 원인을 밝히고져 환경요인 중 산소농도와 폐사상황을 조사하고 실내에서 수온 및 염분에 대한 내성시험과 함께 개체별 산소소비량에 중점을 두어 설험한 결과는 다음과 같다. 우렁쉥이 폐사는 고수온기인 8월부터 증가하기 시작하여 9월에 최대에 달했고 폐사율은 용존산소농도가 3.79ml/l로 최저치를 보인 남해 미조어장에서 $74.3\%$로 가장 높았으며 미륵도, 한산어장 순이었다. 20일간 고수온 내성시험에서 수온 $25^{\circ}C$일때 $30\%$ 폐사되었으나 $27^{\circ}C$이상에서는 전량폐사하였고 염분은 30이상되면 폐사와 무관하였다. 우렁쉥이의 산소요구량은 온도가 높을수록, 단위중량에 대한 개체가 작을수록 즉 3년산에 비해 2년산이 높았으며 질식을 방지하기 위한 최저산소 요구량은 $20^{\circ}C$에서 3.7ml/kg/h, $25^{\circ}C$에서 6.3m1/kg/h로 수온에 따라 큰 차이를 보였다. 우렁쉥이의 대량폐사는 고수온에 의한 대사장애가 있던 중 우렁쉥이 군집의 산소요구량에 대한 수중의 용존산소가 불충분하여 대량폐사를 가중시킨 것 같으며 1년산이나 3년산에 비해 2년산의 대량폐사는 군집의 산소요구량 차이에 기인한 것으로 생각된다.

• 한국어병학회지
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• 제23권2호
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• pp.165-176
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• 2010

In May 2007, mass mortality of Israeli carp, Cyprinus carpio L., was occured on a pond farm located in Jeollabukdo Province, Korea. The mortality rates reached up to 2% of the total fish in the farm per day. Typical clinical signs were abdominal distension, reddish foci on the skin, enteritis, liver congestion and enlarged spleen and kidney. On the basis of biochemical characteristics and 16S rDNA sequence, the causative bacteria isolated from affected carp were identified as Aeromonas veronii. Histologically, degeneration of hepatocytes and congestion in sinusoids were observed in the liver. Spleen showed hemorrhage and the destruction of the sheathed tissues. In kidney, necrotized renal tubules and glomerular destructions were observed. Intestinal tissues revealed necrotized and severe hemorrhage. Mass hemorrhage was observed in muscles. This is the first report that A. veronii caused mortality in cultured Israeli carp in Korea.

• 대한임상독성학회지
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• 제18권2호
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• pp.116-122
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• 2020

Acute respiratory failure is an important risk factor for mortality in patients with acute pesticide poisoning. Therefore, it is necessary to investigate the risk factors to predict respiratory failure in these patients. This study retrospectively investigated the clinical features of respiratory failure among patients with acute pesticide poisoning requiring mechanical ventilation. This study included patients who were admitted with intentional poisoning by pesticide ingestion from January 2017 to December 2019. Paraquat intoxication was excluded. Among 469 patients with acute pesticide poisoning, 398 patients were enrolled in this study. The respiratory failure rate was 30.4%. The rate of respiratory failure according to the type of pesticide was carbamate (75.0%), organophosphate (52.6%), glufosinate (52.1%), glyphosate (23%), pyrethroid (8.9%), and others (17%). The mortality was 25.6% in the respiratory failure group. The risk factors for respiratory failure were old age, low body mass index, and ingestion of more than 300 mL. In conclusion, respiratory failure is a risk factor for mortality in pesticide poisoning. Old age, low body mass index, and ingestion of more than 300 mL are the risk factors for predicting respiratory failure.

• Journal of Preventive Medicine and Public Health
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• 제43권2호
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• pp.151-158
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• 2010

Objectives: The aim of this study was to evaluate the association between cigarette smoking and total mortality, cancer mortality and other disease mortalities in Korean adults. Methods: A total of 14 161 subjects of the Korean Multi-center Cancer Cohort who were over 40 years of age and who were cancer-free at baseline enrollment reported their lifestyle factors, including the smoking status. The median follow-up time was 6.6 years. During the follow-up period from 1993 to 2005, we identified 1159 cases of mortality, including 260 cancer mortality cases with a total of 91 987 person-years, by the national death certificate. Cox proportional hazard regression model was used to estimate the hazard ratio (HR) of cigarette smoking for total mortality, cancer mortality and disease-specific mortality, as adjusted for age, gender, the geographic area and year of enrollment, the alcohol consumption status, the education level and the body mass index (BMI). Results: Cigarette smoking was significantly associated with an increased risk of total mortality, all-cancer mortality and lung cancer mortality (p-trend, < 0.01, <0.01, <0.01, respectively). Compared to non-smoking, current smokers were at a higher risk for mortality [HR (95% CI)=1.3 (1.1 - 1.5) for total mortality; HR (95% CI)=1.6 (1.1 -2.2) for all-cancer mortality; HR (95% CI)=3.9 (1.9-7.7) for lung cancer mortality]. Conclusions: This study's results suggest that cigarette smoking might be associated with total mortality, all-cancer mortality and especially lung cancer mortality among Korean adults.