1.Effects of Cessation of Single-Room Isolation on Transmission of Vancomycin-Resistant Enterococcus in a Hospital
Si-Ho KIM ; Yu Jin LEE ; Ji Hong PARK ; Seran CHEON ; Jeong Seon RYU ; Jung Min SHIN ; Nam Sun HONG ; Yi-Rang JEONG ; Cheon Hoo JEON ; Yu Mi WI
Journal of Korean Medical Science 2024;40(5):e11-
		                        		
		                        			 Background:
		                        			Single room isolation with contact precautions is widely regarded as a fundamental strategy to prevent the transmission of multidrug-resistant organisms (MDROs). However, its implementation demands substantial resources, limiting its universal application to all MDROs. In this study, we assessed the effect of discontinuing single room isolation for vancomycin-resistant Enterococcus (VRE). 
		                        		
		                        			Methods:
		                        			This is a retrospective, observational study conducted at a single 750-bed tertiary center. We conducted an interrupted time series analysis to compare incidence rates and trends of new-onset VRE colonization and bacteremia during the one year before and after the strategy change on January 1, 2023. 
		                        		
		                        			Results:
		                        			Single-room occupancy decreased from 79.7% pre-intervention to 23.6% postintervention (P < 0.001). The incidence rate of new-onset VRE colonization was 0.452 and 0.535 per 1,000 patient-days in the pre- and post-intervention periods, respectively, with no statistically significant difference (P = 0.202). However, there was a slightly increasing trend (0.036 [95% confidence interval, −0.002, 0.074] increase per month, P = 0.066). The new-onset VRE bacteremia incidence rate was not differed in incidence (0.060 and 0.055, P= 0.571) or trend (P = 0.720). 
		                        		
		                        			Conclusion
		                        			Our study suggests that discontinuing single-room isolation for VRE patients may not affect the incidence of new-onset VRE bacteremia, but caution is needed due to the potential increase in colonization. 
		                        		
		                        		
		                        		
		                        	
2.Effects of Cessation of Single-Room Isolation on Transmission of Vancomycin-Resistant Enterococcus in a Hospital
Si-Ho KIM ; Yu Jin LEE ; Ji Hong PARK ; Seran CHEON ; Jeong Seon RYU ; Jung Min SHIN ; Nam Sun HONG ; Yi-Rang JEONG ; Cheon Hoo JEON ; Yu Mi WI
Journal of Korean Medical Science 2024;40(5):e11-
		                        		
		                        			 Background:
		                        			Single room isolation with contact precautions is widely regarded as a fundamental strategy to prevent the transmission of multidrug-resistant organisms (MDROs). However, its implementation demands substantial resources, limiting its universal application to all MDROs. In this study, we assessed the effect of discontinuing single room isolation for vancomycin-resistant Enterococcus (VRE). 
		                        		
		                        			Methods:
		                        			This is a retrospective, observational study conducted at a single 750-bed tertiary center. We conducted an interrupted time series analysis to compare incidence rates and trends of new-onset VRE colonization and bacteremia during the one year before and after the strategy change on January 1, 2023. 
		                        		
		                        			Results:
		                        			Single-room occupancy decreased from 79.7% pre-intervention to 23.6% postintervention (P < 0.001). The incidence rate of new-onset VRE colonization was 0.452 and 0.535 per 1,000 patient-days in the pre- and post-intervention periods, respectively, with no statistically significant difference (P = 0.202). However, there was a slightly increasing trend (0.036 [95% confidence interval, −0.002, 0.074] increase per month, P = 0.066). The new-onset VRE bacteremia incidence rate was not differed in incidence (0.060 and 0.055, P= 0.571) or trend (P = 0.720). 
		                        		
		                        			Conclusion
		                        			Our study suggests that discontinuing single-room isolation for VRE patients may not affect the incidence of new-onset VRE bacteremia, but caution is needed due to the potential increase in colonization. 
		                        		
		                        		
		                        		
		                        	
3.Effects of Cessation of Single-Room Isolation on Transmission of Vancomycin-Resistant Enterococcus in a Hospital
Si-Ho KIM ; Yu Jin LEE ; Ji Hong PARK ; Seran CHEON ; Jeong Seon RYU ; Jung Min SHIN ; Nam Sun HONG ; Yi-Rang JEONG ; Cheon Hoo JEON ; Yu Mi WI
Journal of Korean Medical Science 2024;40(5):e11-
		                        		
		                        			 Background:
		                        			Single room isolation with contact precautions is widely regarded as a fundamental strategy to prevent the transmission of multidrug-resistant organisms (MDROs). However, its implementation demands substantial resources, limiting its universal application to all MDROs. In this study, we assessed the effect of discontinuing single room isolation for vancomycin-resistant Enterococcus (VRE). 
		                        		
		                        			Methods:
		                        			This is a retrospective, observational study conducted at a single 750-bed tertiary center. We conducted an interrupted time series analysis to compare incidence rates and trends of new-onset VRE colonization and bacteremia during the one year before and after the strategy change on January 1, 2023. 
		                        		
		                        			Results:
		                        			Single-room occupancy decreased from 79.7% pre-intervention to 23.6% postintervention (P < 0.001). The incidence rate of new-onset VRE colonization was 0.452 and 0.535 per 1,000 patient-days in the pre- and post-intervention periods, respectively, with no statistically significant difference (P = 0.202). However, there was a slightly increasing trend (0.036 [95% confidence interval, −0.002, 0.074] increase per month, P = 0.066). The new-onset VRE bacteremia incidence rate was not differed in incidence (0.060 and 0.055, P= 0.571) or trend (P = 0.720). 
		                        		
		                        			Conclusion
		                        			Our study suggests that discontinuing single-room isolation for VRE patients may not affect the incidence of new-onset VRE bacteremia, but caution is needed due to the potential increase in colonization. 
		                        		
		                        		
		                        		
		                        	
4.Effects of Cessation of Single-Room Isolation on Transmission of Vancomycin-Resistant Enterococcus in a Hospital
Si-Ho KIM ; Yu Jin LEE ; Ji Hong PARK ; Seran CHEON ; Jeong Seon RYU ; Jung Min SHIN ; Nam Sun HONG ; Yi-Rang JEONG ; Cheon Hoo JEON ; Yu Mi WI
Journal of Korean Medical Science 2024;40(5):e11-
		                        		
		                        			 Background:
		                        			Single room isolation with contact precautions is widely regarded as a fundamental strategy to prevent the transmission of multidrug-resistant organisms (MDROs). However, its implementation demands substantial resources, limiting its universal application to all MDROs. In this study, we assessed the effect of discontinuing single room isolation for vancomycin-resistant Enterococcus (VRE). 
		                        		
		                        			Methods:
		                        			This is a retrospective, observational study conducted at a single 750-bed tertiary center. We conducted an interrupted time series analysis to compare incidence rates and trends of new-onset VRE colonization and bacteremia during the one year before and after the strategy change on January 1, 2023. 
		                        		
		                        			Results:
		                        			Single-room occupancy decreased from 79.7% pre-intervention to 23.6% postintervention (P < 0.001). The incidence rate of new-onset VRE colonization was 0.452 and 0.535 per 1,000 patient-days in the pre- and post-intervention periods, respectively, with no statistically significant difference (P = 0.202). However, there was a slightly increasing trend (0.036 [95% confidence interval, −0.002, 0.074] increase per month, P = 0.066). The new-onset VRE bacteremia incidence rate was not differed in incidence (0.060 and 0.055, P= 0.571) or trend (P = 0.720). 
		                        		
		                        			Conclusion
		                        			Our study suggests that discontinuing single-room isolation for VRE patients may not affect the incidence of new-onset VRE bacteremia, but caution is needed due to the potential increase in colonization. 
		                        		
		                        		
		                        		
		                        	
5.Corrigendum to: Development and Verification of Time-Series Deep Learning for Drug-Induced Liver Injury Detection in Patients Taking Angiotensin II Receptor Blockers: A Multicenter Distributed Research Network Approach
Suncheol HEO ; Jae Yong YU ; Eun Ae KANG ; Hyunah SHIN ; Kyeongmin RYU ; Chungsoo KIM ; Yebin CHEGA ; Hyojung JUNG ; Suehyun LEE ; Rae Woong PARK ; Kwangsoo KIM ; Yul HWANGBO ; Jae-Hyun LEE ; Yu Rang PARK
Healthcare Informatics Research 2024;30(2):168-168
		                        		
		                        		
		                        		
		                        	
6.Development and Verification of Time-Series Deep Learning for Drug-Induced Liver Injury Detection in Patients Taking Angiotensin II Receptor Blockers: A Multicenter Distributed Research Network Approach
Suncheol HEO ; Jae Yong YU ; Eun Ae KANG ; Hyunah SHIN ; Kyeongmin RYU ; Chungsoo KIM ; Yebin CHEGAL ; Hyojung JUNG ; Suehyun LEE ; Rae Woong PARK ; Kwangsoo KIM ; Yul HWANGBO ; Jae-Hyun LEE ; Yu Rang PARK
Healthcare Informatics Research 2023;29(3):246-255
		                        		
		                        			 Objectives:
		                        			The objective of this study was to develop and validate a multicenter-based, multi-model, time-series deep learning model for predicting drug-induced liver injury (DILI) in patients taking angiotensin receptor blockers (ARBs). The study leveraged a national-level multicenter approach, utilizing electronic health records (EHRs) from six hospitals in Korea. 
		                        		
		                        			Methods:
		                        			A retrospective cohort analysis was conducted using EHRs from six hospitals in Korea, comprising a total of 10,852 patients whose data were converted to the Common Data Model. The study assessed the incidence rate of DILI among patients taking ARBs and compared it to a control group. Temporal patterns of important variables were analyzed using an interpretable timeseries model. 
		                        		
		                        			Results:
		                        			The overall incidence rate of DILI among patients taking ARBs was found to be 1.09%. The incidence rates varied for each specific ARB drug and institution, with valsartan having the highest rate (1.24%) and olmesartan having the lowest rate (0.83%). The DILI prediction models showed varying performance, measured by the average area under the receiver operating characteristic curve, with telmisartan (0.93), losartan (0.92), and irbesartan (0.90) exhibiting higher classification performance. The aggregated attention scores from the models highlighted the importance of variables such as hematocrit, albumin, prothrombin time, and lymphocytes in predicting DILI. 
		                        		
		                        			Conclusions
		                        			Implementing a multicenter-based timeseries classification model provided evidence that could be valuable to clinicians regarding temporal patterns associated with DILI in ARB users. This information supports informed decisions regarding appropriate drug use and treatment strategies. 
		                        		
		                        		
		                        		
		                        	
7.Effects of a Multifaceted Pediatric Delirium Education Program for Pediatric Intensive Care Unit Nurses on their Delirium Knowledge, Self-confidence in Delirium Nursing, and Delirium Assessment Accuracy: A One Group Pretest-Posttest Design
Song Yi NAM ; Su Jung CHOI ; Sa Rang OH ; Ji Eun CHOI ; Ki Young PARK
Journal of Korean Critical Care Nursing 2023;16(1):56-70
		                        		
		                        			 Purpose:
		                        			: This study aimed to identify the effects of a multifaceted pediatric delirium education program for pediatric intensive care unit (PICU) nurses on their delirium knowledge, confidence in delirium nursing, and delirium evaluation accuracy. 
		                        		
		                        			Methods:
		                        			: This study used a one-group pretest-posttest design. The participants were 50 nurses in two units of the PICU at S General Hospital in Seoul. All participants took a 1-hour lecture with case-based practice for the first two weeks, and received feedback as they applied the program to clinical practice over the next two weeks. Test measures were completed before and after the four week intervention period for all participants. The delirium evaluation accuracy was measured using the Korean version of the Cornell Assessment of Pediatric Delirium. Data were analyzed using the chi-square and paired t-tests. 
		                        		
		                        			Results:
		                        			: After the Pediatric Delirium Education Program, nurses’ delirium knowledge (x2 =11.65, p =.001), confidence in delirium nursing (t=9.71, p<.001), and delirium evaluation accuracy (t=6.07, p<.001) improved significantly. 
		                        		
		                        			Conclusions
		                        			: Pediatric delirium education programs for PICU nurses were effective. For active application of the program in clinical practice in the future, various cases of childhood delirium and specific strategies for each subject must be developed. To achieve this, long-term intervention and research for multiple organizations are required. 
		                        		
		                        		
		                        		
		                        	
8.Design and Methods of a Prospective Smartphone App-Based Study for Digital Phenotyping of Mood and Anxiety Symptoms Mixed With Centralized and Decentralized Research Form: The Search Your Mind (S.Y.M., 心) Project
Ye-Won KANG ; Tai hui SUN ; Ga-Yeong KIM ; Ho-Young JUNG ; Hyun-Jin KIM ; Seulki LEE ; Yu Rang PARK ; Jaiden TU ; Jae-Hon LEE ; Kwang-Yeon CHOI ; Chul-Hyun CHO
Psychiatry Investigation 2022;19(7):588-594
		                        		
		                        			
		                        			 In this study, the Search Your Mind (S.Y.M., 心) project aimed to collect prospective digital phenotypic data centered on mood and anxiety symptoms across psychiatric disorders through a smartphone application (app) platform while using both centralized and decentralized research designs: the centralized research design is a hybrid of a general prospective observational study and a digital platform-based study, and it includes face-to-face research such as informed written consent, clinical evaluation, and blood sampling. It also includes digital phenotypic assessment through an application-based platform using wearable devices. Meanwhile, the decentralized research design is a non-face-to-face study in which anonymous participants agree to electronic informed consent forms on the app. It also exclusively uses an application-based platform to acquire individualized digital phenotypic data. We expect to collect clinical, biological, and digital phenotypic data centered on mood and anxiety symptoms, and we propose a possible model of centralized and decentralized research design. 
		                        		
		                        		
		                        		
		                        	
9.Pembrolizumab for Refractory Metastatic Myxofibrosarcoma: A Case Report.
Haa Na SONG ; Min Gyu KANG ; Jeong Rang PARK ; Jin Yong HWANG ; Jung Hun KANG ; Won Seop LEE ; Gyeong Won LEE
Cancer Research and Treatment 2018;50(4):1458-1461
		                        		
		                        			
		                        			Myxofibrosarcoma is a rare tumor, refractory to cytotoxic chemotherapy and radiotherapy. Pembrolizumab is an innovative immunotherapy drug consisting of programmed death receptor ligand 1 antibody proven to be useful for numerous types of cancer cells. A patient had been diagnosed with metastatic myxofibrosarcoma, refractory to radiotherapy and conventional cytotoxic chemotherapy. The patient achieved a partial response during palliative chemotherapy with pembrolizumab for 14 cycles. To the best of our knowledge, this is the first case report demonstrating the efficacy of pembrolizumab for refractory myxofibrosarcoma.
		                        		
		                        		
		                        		
		                        			Drug Therapy
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Immunotherapy
		                        			;
		                        		
		                        			Radiotherapy
		                        			;
		                        		
		                        			Sarcoma
		                        			
		                        		
		                        	
10. Protective effect of decursin and decursinol angelate-rich Angelica gigas Nakai extract on dextran sulfate sodium-induced murine ulcerative colitis
Sa-Rang OH ; Seon OK ; Tae-Sung JUNG ; Sang-Ok JEON ; Ji-Min PARK ; Ji-wook JUNG ; Deok-Seon RYU
Asian Pacific Journal of Tropical Medicine 2017;10(9):864-870
		                        		
		                        			
		                        			 Objective To investigate the anti-inflammatory effects of decursin and decursinol angelate-rich Angelica gigas Nakai (AGNE) on dextran sulfate sodium (DSS)-induced murine ulcerative colitis (UC). Methods The therapeutic effect of an AGNE was analyzed in a mouse model of UC induced by DSS. Disease activity index values were measured by clinical signs such as a weight loss, stool consistency, rectal bleeding and colon length. A histological analysis was performed using hematoxylin and eosin staining. Key inflammatory cytokines and mediators including IL-6, TNF-α PGE 
		                        		
		                        		
		                        		
		                        	
            
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