1.Mortality and Risk Factors for Emphysematous Pyelonephritis in Korea: A Multicenter Retrospective Cohort Study
Seung-Kwon CHOI ; Jeong Woo LEE ; Seung Il JUNG ; Eu Chang HWANG ; Joongwon CHOI ; Woong Bin KIM ; Jung Sik HUH ; Jin Bong CHOI ; Yeonjoo KIM ; Jae Min CHUNG ; Ju-Hyun SHIN ; Jae Hung JUNG ; Hong CHUNG ; Sangrak BAE ; Tae-Hyoung KIM
Urogenital Tract Infection 2025;20(1):34-41
		                        		
		                        			 Purpose:
		                        			Emphysematous pyelonephritis (EPN) is a life-threatening disease requiring immediate treatment. This multicenter retrospective cohort study aimed to analyze the mortality rate and risk factors associated with EPN. 
		                        		
		                        			Materials and Methods:
		                        			Between January 2011 and February 2021, 217 patients diagnosed with EPN via computed tomography who visited 14 teaching hospitals were retrospectively analyzed. Clinical data, including age, sex, comorbidities, Huang and Tseng classification, hydronephrosis, acute kidney injury, blood and urine tests, surgical interventions, percutaneous drainage, and conservative treatments, were compared between the survival and death groups. Risk factors for mortality due to EPN were analyzed using univariate and multivariate methods. 
		                        		
		                        			Results:
		                        			The mean age of survivors and deceased patients was 67.8 and 69.0 years, respectively (p=0.136). The sex distribution (male/female) was 48/146 and 8/15, respectively (p=0.298). Of the 217 patients, 23 died, resulting in a mortality rate of 10.6%. In univariate analysis, the Huang and Tseng classification (p=0.004), platelet count (p=0.005), and acute kidney injury (p=0.007) were significantly associated with mortality from EPN. In multivariate analysis, only the Huang and Tseng classification (p=0.029) was identified as a risk factor. Mortality rates according to the Huang and Tseng classification were as follows: class I (5.88%), class II (7.50%), class IIIa (14.28%), class IIIb (25.00%), and class IV (23.07%). 
		                        		
		                        			Conclusions
		                        			EPN is associated with a high mortality rate. Among various clinical factors, the Huang and Tseng classification was the most significant indicator for predicting mortality. 
		                        		
		                        		
		                        		
		                        	
2.Mortality and Risk Factors for Emphysematous Pyelonephritis in Korea: A Multicenter Retrospective Cohort Study
Seung-Kwon CHOI ; Jeong Woo LEE ; Seung Il JUNG ; Eu Chang HWANG ; Joongwon CHOI ; Woong Bin KIM ; Jung Sik HUH ; Jin Bong CHOI ; Yeonjoo KIM ; Jae Min CHUNG ; Ju-Hyun SHIN ; Jae Hung JUNG ; Hong CHUNG ; Sangrak BAE ; Tae-Hyoung KIM
Urogenital Tract Infection 2025;20(1):34-41
		                        		
		                        			 Purpose:
		                        			Emphysematous pyelonephritis (EPN) is a life-threatening disease requiring immediate treatment. This multicenter retrospective cohort study aimed to analyze the mortality rate and risk factors associated with EPN. 
		                        		
		                        			Materials and Methods:
		                        			Between January 2011 and February 2021, 217 patients diagnosed with EPN via computed tomography who visited 14 teaching hospitals were retrospectively analyzed. Clinical data, including age, sex, comorbidities, Huang and Tseng classification, hydronephrosis, acute kidney injury, blood and urine tests, surgical interventions, percutaneous drainage, and conservative treatments, were compared between the survival and death groups. Risk factors for mortality due to EPN were analyzed using univariate and multivariate methods. 
		                        		
		                        			Results:
		                        			The mean age of survivors and deceased patients was 67.8 and 69.0 years, respectively (p=0.136). The sex distribution (male/female) was 48/146 and 8/15, respectively (p=0.298). Of the 217 patients, 23 died, resulting in a mortality rate of 10.6%. In univariate analysis, the Huang and Tseng classification (p=0.004), platelet count (p=0.005), and acute kidney injury (p=0.007) were significantly associated with mortality from EPN. In multivariate analysis, only the Huang and Tseng classification (p=0.029) was identified as a risk factor. Mortality rates according to the Huang and Tseng classification were as follows: class I (5.88%), class II (7.50%), class IIIa (14.28%), class IIIb (25.00%), and class IV (23.07%). 
		                        		
		                        			Conclusions
		                        			EPN is associated with a high mortality rate. Among various clinical factors, the Huang and Tseng classification was the most significant indicator for predicting mortality. 
		                        		
		                        		
		                        		
		                        	
3.Mortality and Risk Factors for Emphysematous Pyelonephritis in Korea: A Multicenter Retrospective Cohort Study
Seung-Kwon CHOI ; Jeong Woo LEE ; Seung Il JUNG ; Eu Chang HWANG ; Joongwon CHOI ; Woong Bin KIM ; Jung Sik HUH ; Jin Bong CHOI ; Yeonjoo KIM ; Jae Min CHUNG ; Ju-Hyun SHIN ; Jae Hung JUNG ; Hong CHUNG ; Sangrak BAE ; Tae-Hyoung KIM
Urogenital Tract Infection 2025;20(1):34-41
		                        		
		                        			 Purpose:
		                        			Emphysematous pyelonephritis (EPN) is a life-threatening disease requiring immediate treatment. This multicenter retrospective cohort study aimed to analyze the mortality rate and risk factors associated with EPN. 
		                        		
		                        			Materials and Methods:
		                        			Between January 2011 and February 2021, 217 patients diagnosed with EPN via computed tomography who visited 14 teaching hospitals were retrospectively analyzed. Clinical data, including age, sex, comorbidities, Huang and Tseng classification, hydronephrosis, acute kidney injury, blood and urine tests, surgical interventions, percutaneous drainage, and conservative treatments, were compared between the survival and death groups. Risk factors for mortality due to EPN were analyzed using univariate and multivariate methods. 
		                        		
		                        			Results:
		                        			The mean age of survivors and deceased patients was 67.8 and 69.0 years, respectively (p=0.136). The sex distribution (male/female) was 48/146 and 8/15, respectively (p=0.298). Of the 217 patients, 23 died, resulting in a mortality rate of 10.6%. In univariate analysis, the Huang and Tseng classification (p=0.004), platelet count (p=0.005), and acute kidney injury (p=0.007) were significantly associated with mortality from EPN. In multivariate analysis, only the Huang and Tseng classification (p=0.029) was identified as a risk factor. Mortality rates according to the Huang and Tseng classification were as follows: class I (5.88%), class II (7.50%), class IIIa (14.28%), class IIIb (25.00%), and class IV (23.07%). 
		                        		
		                        			Conclusions
		                        			EPN is associated with a high mortality rate. Among various clinical factors, the Huang and Tseng classification was the most significant indicator for predicting mortality. 
		                        		
		                        		
		                        		
		                        	
4.Mortality and Risk Factors for Emphysematous Pyelonephritis in Korea: A Multicenter Retrospective Cohort Study
Seung-Kwon CHOI ; Jeong Woo LEE ; Seung Il JUNG ; Eu Chang HWANG ; Joongwon CHOI ; Woong Bin KIM ; Jung Sik HUH ; Jin Bong CHOI ; Yeonjoo KIM ; Jae Min CHUNG ; Ju-Hyun SHIN ; Jae Hung JUNG ; Hong CHUNG ; Sangrak BAE ; Tae-Hyoung KIM
Urogenital Tract Infection 2025;20(1):34-41
		                        		
		                        			 Purpose:
		                        			Emphysematous pyelonephritis (EPN) is a life-threatening disease requiring immediate treatment. This multicenter retrospective cohort study aimed to analyze the mortality rate and risk factors associated with EPN. 
		                        		
		                        			Materials and Methods:
		                        			Between January 2011 and February 2021, 217 patients diagnosed with EPN via computed tomography who visited 14 teaching hospitals were retrospectively analyzed. Clinical data, including age, sex, comorbidities, Huang and Tseng classification, hydronephrosis, acute kidney injury, blood and urine tests, surgical interventions, percutaneous drainage, and conservative treatments, were compared between the survival and death groups. Risk factors for mortality due to EPN were analyzed using univariate and multivariate methods. 
		                        		
		                        			Results:
		                        			The mean age of survivors and deceased patients was 67.8 and 69.0 years, respectively (p=0.136). The sex distribution (male/female) was 48/146 and 8/15, respectively (p=0.298). Of the 217 patients, 23 died, resulting in a mortality rate of 10.6%. In univariate analysis, the Huang and Tseng classification (p=0.004), platelet count (p=0.005), and acute kidney injury (p=0.007) were significantly associated with mortality from EPN. In multivariate analysis, only the Huang and Tseng classification (p=0.029) was identified as a risk factor. Mortality rates according to the Huang and Tseng classification were as follows: class I (5.88%), class II (7.50%), class IIIa (14.28%), class IIIb (25.00%), and class IV (23.07%). 
		                        		
		                        			Conclusions
		                        			EPN is associated with a high mortality rate. Among various clinical factors, the Huang and Tseng classification was the most significant indicator for predicting mortality. 
		                        		
		                        		
		                        		
		                        	
5.Mortality and Risk Factors for Emphysematous Pyelonephritis in Korea: A Multicenter Retrospective Cohort Study
Seung-Kwon CHOI ; Jeong Woo LEE ; Seung Il JUNG ; Eu Chang HWANG ; Joongwon CHOI ; Woong Bin KIM ; Jung Sik HUH ; Jin Bong CHOI ; Yeonjoo KIM ; Jae Min CHUNG ; Ju-Hyun SHIN ; Jae Hung JUNG ; Hong CHUNG ; Sangrak BAE ; Tae-Hyoung KIM
Urogenital Tract Infection 2025;20(1):34-41
		                        		
		                        			 Purpose:
		                        			Emphysematous pyelonephritis (EPN) is a life-threatening disease requiring immediate treatment. This multicenter retrospective cohort study aimed to analyze the mortality rate and risk factors associated with EPN. 
		                        		
		                        			Materials and Methods:
		                        			Between January 2011 and February 2021, 217 patients diagnosed with EPN via computed tomography who visited 14 teaching hospitals were retrospectively analyzed. Clinical data, including age, sex, comorbidities, Huang and Tseng classification, hydronephrosis, acute kidney injury, blood and urine tests, surgical interventions, percutaneous drainage, and conservative treatments, were compared between the survival and death groups. Risk factors for mortality due to EPN were analyzed using univariate and multivariate methods. 
		                        		
		                        			Results:
		                        			The mean age of survivors and deceased patients was 67.8 and 69.0 years, respectively (p=0.136). The sex distribution (male/female) was 48/146 and 8/15, respectively (p=0.298). Of the 217 patients, 23 died, resulting in a mortality rate of 10.6%. In univariate analysis, the Huang and Tseng classification (p=0.004), platelet count (p=0.005), and acute kidney injury (p=0.007) were significantly associated with mortality from EPN. In multivariate analysis, only the Huang and Tseng classification (p=0.029) was identified as a risk factor. Mortality rates according to the Huang and Tseng classification were as follows: class I (5.88%), class II (7.50%), class IIIa (14.28%), class IIIb (25.00%), and class IV (23.07%). 
		                        		
		                        			Conclusions
		                        			EPN is associated with a high mortality rate. Among various clinical factors, the Huang and Tseng classification was the most significant indicator for predicting mortality. 
		                        		
		                        		
		                        		
		                        	
6.2023 Korean Association of Urogenital Tract Infection and Inflammation guidelines for gonococcal infection
Hee Jo YANG ; Hyuk Min LEE ; Seung-Ju LEE ; Jin Bong CHOI ; Sangrak BAE ; Jae Hung JUNG ; Tae Wook KANG ; Eu Chang HWANG
Investigative and Clinical Urology 2024;65(1):1-8
		                        		
		                        			
		                        			 The incidence of gonorrhea has increased significantly in recent years in the United States, especially among sexually active twenty-year-olds. Although the incidence of gonorrhea has decreased in Korea since the early 2000s, it is still common among people in their twenties. Nucleic acid amplification test (NAAT) is the most sensitive diagnostic test for detecting gonococcal infection. Gram-staining is a simple and useful laboratory test for diagnosing symptomatic male gonococcal urethritis. Although bacterial culture can be used to detect antimicrobial susceptibility, its sensitivity is lower than that of NAAT. Treatment for uncomplicated gonorrhea infection is a single intramuscular injection of ceftriaxone 500 mg. Doxycycline (100 mg twice daily for 7 days) is added if there is a possibility of co-infection with chlamydia. If ceftriaxone is difficult to use, spectinomycin 2 g can be injected intramuscularly in Korea. Patients with gonorrhea should have repeated examinations within three months at the exposure site because of a high risk of re-infection. A person diagnosed with gonorrhea should discuss the nature of the infection, the importance of informing partners, when sexual activity can resume, and how to reduce the risk of sexually transmitted infections. 
		                        		
		                        		
		                        		
		                        	
7.How many emergency medicine residents reselect their specialty if they could?
Bong Ki JEON ; Hyung Min LEE ; Kwang Hyun CHO ; Ho Jung KIM ; In Byung KIM ; Bum Suk SEO ; Suk Jae CHOI ; Yoo Sang YOON ; Dong Hune KEY ; Song Yi PARK ; Kyung Hye PARK ; Eu Sun LEE
Journal of the Korean Society of Emergency Medicine 2020;31(6):622-629
		                        		
		                        			Objective:
		                        			The 2019 Korean Emergency Medicine Residents Survey (KEMRS) is the first survey by the Korean Society of Emergency Medicine (KSEM) on the comprehensive satisfaction of their residents. Satisfaction is important not only for the personal well-being of the residents but also for patient safety. 
		                        		
		                        			Methods:
		                        			A total of 622 emergency medicine residents were surveyed, using both a paper and email questionnaire from May to August of 2019. Factors related to satisfaction were analyzed. 
		                        		
		                        			Results:
		                        			Of the responders, 66% said they would reapply for the emergency specialty and 51% said that they would reselect the same training hospital. The group of residents who said they would choose emergency medicine again felt that their expectations had been met and that they were comfortable with the choice of the specialty. They felt that the factors of satisfaction with their shift schedule and personal health played a more important role in their reselection of the training hospital than the workload. 
		                        		
		                        			Conclusion
		                        			The satisfaction levels of the Korean emergency residents were low. Thus, training hospitals should provide a reasonable working environment to increase their satisfaction. Also, it is important to create an environment where residents can feel rewarded and proud of the work they do.
		                        		
		                        		
		                        		
		                        	
8.How many emergency medicine residents reselect their specialty if they could?
Bong Ki JEON ; Hyung Min LEE ; Kwang Hyun CHO ; Ho Jung KIM ; In Byung KIM ; Bum Suk SEO ; Suk Jae CHOI ; Yoo Sang YOON ; Dong Hune KEY ; Song Yi PARK ; Kyung Hye PARK ; Eu Sun LEE
Journal of the Korean Society of Emergency Medicine 2020;31(6):622-629
		                        		
		                        			Objective:
		                        			The 2019 Korean Emergency Medicine Residents Survey (KEMRS) is the first survey by the Korean Society of Emergency Medicine (KSEM) on the comprehensive satisfaction of their residents. Satisfaction is important not only for the personal well-being of the residents but also for patient safety. 
		                        		
		                        			Methods:
		                        			A total of 622 emergency medicine residents were surveyed, using both a paper and email questionnaire from May to August of 2019. Factors related to satisfaction were analyzed. 
		                        		
		                        			Results:
		                        			Of the responders, 66% said they would reapply for the emergency specialty and 51% said that they would reselect the same training hospital. The group of residents who said they would choose emergency medicine again felt that their expectations had been met and that they were comfortable with the choice of the specialty. They felt that the factors of satisfaction with their shift schedule and personal health played a more important role in their reselection of the training hospital than the workload. 
		                        		
		                        			Conclusion
		                        			The satisfaction levels of the Korean emergency residents were low. Thus, training hospitals should provide a reasonable working environment to increase their satisfaction. Also, it is important to create an environment where residents can feel rewarded and proud of the work they do.
		                        		
		                        		
		                        		
		                        	
9.Multicenter Surgical Site Infections Surveillance System Report, 2007: In Total Hip and Total Knee Arthroplasties and Gastrectomies.
Eu Suk KIM ; Yun Jung CHANG ; Yoon Soo PARK ; Ji Hea KANG ; Shin Young PARK ; Jeong Yeon KIM ; Sung Eun LEE ; Sung Han KIM ; Seon Heui KWON ; Young Hwa CHOI ; Hye Young JIN ; Hyo Youl KIM ; Young UH ; Bong Hee KIM ; Hee Jung SON ; Hee Jung CHOI
Korean Journal of Nosocomial Infection Control 2008;13(1):32-41
		                        		
		                        			
		                        			BACKGROUND: A prospective multicenter study was performed to make a surgical site infections (SSI) surveillance system for hip (HRA) and knee (KRA) replacement arthroplasties and gastrectomies (GAST) in Korea. The rates, risk factors, and clinical characteristics of SSI were evaluated. METHODS: Demographic data, clinical and operative risk factors for SSI, and information of prophylactic antibiotic uses for the patients who took HRA/KRA and GAST in 7 and 5 hospitals, respectively were collected during July through December of 2007. SSI surveillance for HRA/KRA and GAST was done for 1 year and 1 month after operations, respectively. RESULTS: A total of 1,294 cases (HRA, 342; KRA, 453; GAST, 499) were monitored for SSI. The SSI rates of HRA, KRA, and GAST were 1.75 (6/342), 1.10 (5/453), and 4.41 (22/499) per 100 operations, respectively. Diabetes mellitus (DM) was more frequently accompanied and the dates of hospitalization before operations were longer in the infected group than the non-infected group of HRA. DM was more frequently found in the infected groups of KRA and GAST. Reoperation, emergent operation, and transfusion were more frequent in the infected group of GAST. Prophylactic antibiotics were used in 1,279 operations (99%) and started within 60 minutes before skin incision in 93% (1,190/1,279). The most frequently used antibiotics were 1st generation cephalosporins. Prophylactic antibiotics were used in combination in 33 operations (3%) and the median duration of antibiotic use was 4 days (0-89). CONCLUSION: The SSI rates of HRA, KRA, and GAST in this SSI surveillance system were 1.75, 1.10, and 4.41 per 100 operations, respectively.
		                        		
		                        		
		                        		
		                        			Anti-Bacterial Agents
		                        			;
		                        		
		                        			Arthroplasty
		                        			;
		                        		
		                        			Arthroplasty, Replacement
		                        			;
		                        		
		                        			Cephalosporins
		                        			;
		                        		
		                        			Chronology as Topic
		                        			;
		                        		
		                        			Diabetes Mellitus
		                        			;
		                        		
		                        			Gastrectomy
		                        			;
		                        		
		                        			Hip
		                        			;
		                        		
		                        			Hospitalization
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Knee
		                        			;
		                        		
		                        			Korea
		                        			;
		                        		
		                        			Prospective Studies
		                        			;
		                        		
		                        			Reoperation
		                        			;
		                        		
		                        			Risk Factors
		                        			;
		                        		
		                        			Skin
		                        			
		                        		
		                        	
10.Korean Nosocomial Infections Surveillance System (KONIS) Report: Data Summary from July through September 2006.
Sang Oh LEE ; Soonduck KIM ; Jesuk LEE ; Kyung Mi KIM ; Bong Hee KIM ; Eu Suk KIM ; Jin hwaa KIM ; Tae Hyong KIM ; Hyo Youl KIM ; Sang Won PARK ; Hyunjoo PAI ; Young UH ; Eun Sun LEE ; Yoon Suk JANG ; Yun Jung CHANG ; Moung Ju HAN ; Jung Oak KANG ; Mi Na KIM ; Min Ja KIM ; Eun Suk PARK ; Hyang Soon OH ; Jae Sim JEONG ; Yeong Seon LEE ; Hee Bok OH ; Tae Yeal CHOI
Korean Journal of Nosocomial Infection Control 2006;11(2):113-128
		                        		
		                        			
		                        			BACKGROUND: THe Korean Society for Nosocomial Infection Control (KOSNIC) orfanized the Korean Nosocomial Infections Surveillance System (KONIS) to establish a nationwide database of Nosocomial infection (NI) rate in the intensive care units (ICUs) of Korean hospitals. This report is a summary of the data from July through September 2006. METHODS: The KONIS performed a prospective sruveillance for nosocomial urinary tract infections (UTI), bloodstream infections (BSI), and pneumonia (PNEU) at 76 ICUs in 44 hospitals. NI rates were calculated as the numbers of infections per 1,000 patient-days or device-days. RESULTS: A total of 846 nosocomial infections were fOlllld during the study period: 407 UTIs (397 cases were urinary catheter-associated), 204 BSIs (182 were central line-associated), and 235 PNEUs (161 were ventilator-associated). The rate of urinary catheter-associated UTIs was 4.61 cases per 1,000 device-days and urinary catheter utilization ratio was 0.83. The rate of central line-associated BSIs was 3.16 and the utilization ratio was 0.55. The rate of ventilator-associated PNEUs was 3.80 and the utilization ratio was 0.41. Although the ventilator utilization ratio was lower in the hospitals with 400-699 beds than in the hospitals with more than 900 beds, the rate of ventilator-associated pneumonia was higher in the smaller hospitals than in the larger ones. The rates of all three device-associated infections were the highest in the neurosurgical ICUs and the rates were the lowest in the surgical ICUs. CONCLUSION: This study may contribute to the development of effective strategies for NI control according to the size of hospital and the type of ICUs.
		                        		
		                        		
		                        		
		                        			Cross Infection*
		                        			;
		                        		
		                        			Intensive Care Units
		                        			;
		                        		
		                        			Pneumonia
		                        			;
		                        		
		                        			Pneumonia, Ventilator-Associated
		                        			;
		                        		
		                        			Prospective Studies
		                        			;
		                        		
		                        			Urinary Catheters
		                        			;
		                        		
		                        			Urinary Tract Infections
		                        			;
		                        		
		                        			Ventilators, Mechanical
		                        			
		                        		
		                        	
            
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