1.Impact of Pediatric Alopecia Areata on Quality of Life of Patients and Their Family Members: A Nationwide Multicenter Questionnaire Study
Jee Woong CHOI ; Yul Hee KIM ; Hyunbin KWAK ; Jin PARK ; Won-Soo LEE ; Hoon KANG ; Jung Eun KIM ; Tae-Young YOON ; Ki-Ho KIM ; Yong Hyun JANG ; Do Won KIM ; Moon-Bum KIM ; Bark-Lynn LEW ; Woo-Young SIM ; Jiehyun JEON ; Soo Hong SEO ; Ohsang KWON ; Chang-Hun HUH ; Dong-Youn LEE ; Yang Won LEE ; Byung Choel PARK ; Chong Hyun WON ; Do Young KIM ; Hyojin KIM ; Beom Joon KIM ; Young LEE ; Sang Seok KIM ; Gwang Seong CHOI ; The Korean Hair Research Society
Annals of Dermatology 2022;34(4):237-244
		                        		
		                        			 Background:
		                        			Pediatric alopecia areata (AA) can affect the quality of life (QoL) of patients and their family members. Research on the QoL and burden on family members in pediatric AA is limited. 
		                        		
		                        			Objective:
		                        			This nationwide multicenter questionnaire study described the QoL and burden of the family members of patients with pediatric AA. 
		                        		
		                        			Methods:
		                        			This nationwide multicenter questionnaire study enrolled AA patients between the ages of 5 and 18 years from March 1, 2017 to February 28, 2018. Enrolled patients and their parents completed the modified Children’s Dermatology Life Quality Index (CDLQI) and the modified Dermatitis Family Impact (mDFI). The disease severity was measured using the Severity of Alopecia Tool (SALT) survey scores. 
		                        		
		                        			Results:
		                        			A total of 268 patients with AA from 22 hospitals participated in this study. Our study found that the efficacy and satisfaction of previous treatments of AA decreased as the severity of the disease increased. The use of home-based therapies and traditional medicines increased with the increasing severity of the disease, but the efficacy felt by patients was limited. CDLQI and mDFI scores were higher in patients with extensive AA than those with mild to moderate AA. The economic and time burden of the family members also increased as the severity of the disease increased. 
		                        		
		                        			Conclusion
		                        			The severity of the AA is indirectly proportional to the QoL of patients and their family members and directly proportional to the burden. Physicians need to understand these characteristics of pediatric AA and provide appropriate intervention to patients and their family members. 
		                        		
		                        		
		                        		
		                        	
2.Characteristics and Outcomes of Patients with Pulmonary Acute Respiratory Distress Syndrome Infected with Influenza versus Other Respiratory Viruses
Jung Wan YOO ; Sunmi JU ; Seung Jun LEE ; Min Chul CHO ; Yu Ji CHO ; Yi Yeong JEONG ; Jong Deog LEE ; Ho Choel KIM
Tuberculosis and Respiratory Diseases 2019;82(4):328-334
		                        		
		                        			 BACKGROUND:
		                        			Although the frequency of respiratory viral infection in patients with pulmonary acute respiratory distress syndrome (ARDS) is not uncommon, clinical significance of the condition remains to be further elucidated. The purpose of this study was to compare characteristics and outcomes of patients with pulmonary ARDS infected with influenza and other respiratory viruses.
		                        		
		                        			METHODS:
		                        			Clinical data of patients with pulmonary ARDS infected with respiratory viruses January 2014–June 2018 were reviewed. Respiratory viral infection was identified by multiplex reverse transcription–polymerase chain reaction (RT-PCR).
		                        		
		                        			RESULTS:
		                        			Among 126 patients who underwent multiplex RT-PCR, respiratory viral infection was identified in 46% (58/126): 28 patients with influenza and 30 patients with other respiratory viruses. There was no significant difference in baseline and clinical characteristics between patients with influenza and those with other respiratory viruses. The use of extracorporeal membrane oxygenation (ECMO) was more frequent in patients with influenza than in those with other respiratory viruses (32.1% vs 3.3%, p=0.006). Co-bacterial pathogens were more frequently isolated from respiratory samples of patients with pulmonary ARDS infected with influenza virus than those with other respiratory viruses. (53.6% vs 26.7%, p=0.036). There were no significant differences regarding clinical outcomes. In multivariate analysis, acute physiology and chronic health evaluation II was associated with 30-mortality (odds ratio, 1.158; 95% confidence interval, 1.022–1.312; p=0.022).
		                        		
		                        			CONCLUSION
		                        			Respiratory viral infection was not uncommon in patients with pulmonary ARDS. Influenza virus was most commonly identified and was associated with more co-bacterial infection and ECMO therapy. 
		                        		
		                        		
		                        		
		                        	
3.Characteristics and Outcomes of Patients with Pulmonary Acute Respiratory Distress Syndrome Infected with Influenza versus Other Respiratory Viruses
Jung Wan YOO ; Sunmi JU ; Seung Jun LEE ; Min Chul CHO ; Yu Ji CHO ; Yi Yeong JEONG ; Jong Deog LEE ; Ho Choel KIM
Tuberculosis and Respiratory Diseases 2019;82(4):328-334
		                        		
		                        			
		                        			BACKGROUND: Although the frequency of respiratory viral infection in patients with pulmonary acute respiratory distress syndrome (ARDS) is not uncommon, clinical significance of the condition remains to be further elucidated. The purpose of this study was to compare characteristics and outcomes of patients with pulmonary ARDS infected with influenza and other respiratory viruses. METHODS: Clinical data of patients with pulmonary ARDS infected with respiratory viruses January 2014–June 2018 were reviewed. Respiratory viral infection was identified by multiplex reverse transcription–polymerase chain reaction (RT-PCR). RESULTS: Among 126 patients who underwent multiplex RT-PCR, respiratory viral infection was identified in 46% (58/126): 28 patients with influenza and 30 patients with other respiratory viruses. There was no significant difference in baseline and clinical characteristics between patients with influenza and those with other respiratory viruses. The use of extracorporeal membrane oxygenation (ECMO) was more frequent in patients with influenza than in those with other respiratory viruses (32.1% vs 3.3%, p=0.006). Co-bacterial pathogens were more frequently isolated from respiratory samples of patients with pulmonary ARDS infected with influenza virus than those with other respiratory viruses. (53.6% vs 26.7%, p=0.036). There were no significant differences regarding clinical outcomes. In multivariate analysis, acute physiology and chronic health evaluation II was associated with 30-mortality (odds ratio, 1.158; 95% confidence interval, 1.022–1.312; p=0.022). CONCLUSION: Respiratory viral infection was not uncommon in patients with pulmonary ARDS. Influenza virus was most commonly identified and was associated with more co-bacterial infection and ECMO therapy.
		                        		
		                        		
		                        		
		                        			APACHE
		                        			;
		                        		
		                        			Extracorporeal Membrane Oxygenation
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Influenza, Human
		                        			;
		                        		
		                        			Multivariate Analysis
		                        			;
		                        		
		                        			Orthomyxoviridae
		                        			;
		                        		
		                        			Respiratory Distress Syndrome, Adult
		                        			
		                        		
		                        	
4.Serum calcium and phosphorus levels in patients undergoing maintenance hemodialysis: A multicentre study in Korea.
Gheun Ho KIM ; Bum Soon CHOI ; Dae Ryong CHA ; Dong Hyun CHEE ; Eunah HWANG ; Hyung Wook KIM ; Jae Hyun CHANG ; Joong Kyung KIM ; Jung Woo NOH ; Kwon Wook JOO ; Sang Choel LEE ; Sang Woong HAN ; Se Joong KIM ; Soo Wan KIM ; Sug Kyun SHIN ; Wondo PARK ; Won KIM ; Wooseong HUH ; Young Joo KWON ; Young Sun KANG
Kidney Research and Clinical Practice 2014;33(1):52-57
		                        		
		                        			
		                        			BACKGROUND: In many countries, nephrologists follow clinical practice guidelines for mineral bone disorders to control secondary hyperparathyroidism (SHPT) associated with abnormal serum calcium (Ca) and phosphorus (P) levels in patients undergoing maintenance hemodialysis (MHD). The Kidney Disease Outcomes Quality Initiative (KDOQI) Guidelines have long been used in Korea, and this study was undertaken to investigate the current status of serum Ca and P control in MHD patients. METHODS: Data were collected from a total of 1,018 patients undergoing MHD without intercurrent illness, in 17 hemodialysis centers throughout the country. Serum levels of Ca, P, and intact parathyroid hormone (iPTH) were measured over 1 year, and the average values were retrospectively analyzed. RESULTS: Serum levels of Ca, P, and the CaxP product were 9.1+/-0.7mg/dL, 5.3+/-1.4mg/dL, and 48.0+/-13.6mg2/dL2, respectively. However, the percentages of patients with Ca, P, and Ca x P product levels within the KDOQI guideline ranges were 58.7%, 51.0%, and 70.7%, respectively. Of the 1,018 patients, 270 (26.5%) had iPTH >300pg/mL (uncontrolled SHPT), whereas 435 patients (42.7%) showed iPTH <150pg/mL. Patients with uncontrolled SHPT had significantly higher values of serum Ca, P, and CaxP product than those with iPTH < or =300pg/mL. CONCLUSION: Despite the current clinical practice guidelines, SHPT seems to be inadequately controlled in many MHD patients. Uncontrolled SHPT was associated with higher levels of serum Ca, P, and Ca x P product, suggestive of the importance of SHPT management.
		                        		
		                        		
		                        		
		                        			Calcium*
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Hyperparathyroidism, Secondary
		                        			;
		                        		
		                        			Kidney Diseases
		                        			;
		                        		
		                        			Korea
		                        			;
		                        		
		                        			Parathyroid Hormone
		                        			;
		                        		
		                        			Phosphorus*
		                        			;
		                        		
		                        			Renal Dialysis*
		                        			;
		                        		
		                        			Retrospective Studies
		                        			
		                        		
		                        	
5.Correlation between Adenoma Detection Rate and Advanced Adenoma Detection Rate.
Shin Yeoung LEE ; Nam Hee KIM ; Hyun Beom CHAE ; Ki Joong HAN ; Tae Hoon LEE ; Choel Min JANG ; Kyung Mo YOO ; Yoon Suk JUNG ; Jung Ho PARK ; Hong Joo KIM ; Yong Kyun CHO ; Chong Il SOHN ; Woo Kyu JEON ; Byung Ik KIM ; Dong Il PARK
The Korean Journal of Gastroenterology 2014;64(1):18-23
		                        		
		                        			
		                        			BACKGROUND/AIMS: Adenoma detection rate (ADR) is widely used as an index of colonoscopy quality management. Although advanced adenomas can be found less frequently than non-advanced adenomas, advanced adenomas have a higher clinical significance during screening for colorectal cancer. The aim of this study was to investigate the correlation between advanced and non-advanced ADR among colonoscopists. METHODS: This study is an observational study of a cohort of patients undergoing screening colonoscopy between 2009 and 2010. We collected the data on patients' characteristics and colonoscopic findings. The detection rates of adenoma and advanced adenoma were calculated. Logistic regression was used to determine the effects of variables on advanced adenoma detection, and spearman's rank-order correlation was used to evaluate the relationship between advanced ADR and ADR. RESULTS: A total of 561 patients underwent screening colonoscopy by 18 experienced colonoscopists. Most colonoscopists had adequate (>20%) ADRs. Logistic regression showed that increased patient age (OR 1.07 per 1 year increase, 95% CI 1.009-1.133, p=0.023) and male gender (OR 1.860, 95% CI 0.764-4.529, p=0.171) were associated with advanced ADR. When colonoscopists were divided into two groups on the basis of advanced ADR of 5%, ADR was also significantly higher in the group having higher level of advanced ADR. However, there was no correlation between advanced ADR and ADR among colonoscopists as an individual. CONCLUSIONS: Colonoscopists' advanced ADRs were independent of their ADRs, indicating that advanced ADR could be quite low even among colonoscopists with acceptable ADRs. Thus, there seems to be a limitation in using ADR as an adequate index of colonoscopy quality management.
		                        		
		                        		
		                        		
		                        			Adenoma/*diagnosis
		                        			;
		                        		
		                        			Adult
		                        			;
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Cohort Studies
		                        			;
		                        		
		                        			Colonoscopy
		                        			;
		                        		
		                        			Colorectal Neoplasms/*diagnosis
		                        			;
		                        		
		                        			Early Detection of Cancer
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Logistic Models
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Neoplasm Staging
		                        			;
		                        		
		                        			Odds Ratio
		                        			
		                        		
		                        	
6.A Case of Endoscopic Treatment for Gastrocolocutaneous Fistula as a Complication of Percutaneous Endoscopic Gastrostomy.
Jong Ho HWANG ; Hyung Wook KIM ; Dae Hwan KANG ; Choel Woong CHOI ; Soo Bum PARK ; Tae Ik PARK ; Woo Sung JO ; Dong Hyuk CHA
Clinical Endoscopy 2012;45(1):95-98
		                        		
		                        			
		                        			As a rare complication of percutaneous endoscopic gastroscopy (PEG), a gastrocolocutaneous fistula may occur after PEG placement. This paper reports an interesting case which PEG tube unintentionally penetrated transverse colon during PEG. A 72-year-old female patient who suffered from medullary infarction underwent PEG procedure for enteral nutrition, and fecal materials were observed 6 days after the procedure. Transverse colon located in antero-superior site of stomach was observed through abdominal computed tomography, and also the wrong inserted tube was found through gastroscopy and colonoscopy. Endoscopic treatment for the fistula was performed by the use of hemo-clip and detachable snare, closure of the fistula was finally confirmed 6 days after the endoscopic procedure. Therefore, the gastrocolocutaneous fistula should be considered as one of the complications of PEG when fecal material is observed through PEG tube in a few days after PEG procedure and endoscopic treatment can be feasible in this case.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Colon, Transverse
		                        			;
		                        		
		                        			Colonoscopy
		                        			;
		                        		
		                        			Enteral Nutrition
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Fistula
		                        			;
		                        		
		                        			Gastroscopy
		                        			;
		                        		
		                        			Gastrostomy
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Infarction
		                        			;
		                        		
		                        			SNARE Proteins
		                        			;
		                        		
		                        			Stomach
		                        			
		                        		
		                        	
7.The Safety of Endoscopic Sphincterotomy in Patients Taking Aspirin.
Jong Ho HWANG ; Dae Hwan KANG ; Hyung Wook KIM ; Choel Woong CHOI ; Soo Bum PARK
Korean Journal of Medicine 2011;81(2):193-198
		                        		
		                        			
		                        			BACKGROUND/AIMS: Endoscopic sphincterotomy (EST) is a common therapeutic technique for biliary and pancreatic disease, but it can cause several complications. Although the literature suggests that there is no need for patients to stop taking aspirin before undergoing EST, there are no definite guidelines on this in Korea. Consequently, we compared the frequency of bleeding and safety between aspirin users and nonusers undergoing EST. METHODS: This retrospective study recruited 1003 patients who underwent EST at our hospital between 1 February 2005 and 30 September 2008. Thirteen patients continued to take aspirin until the day of the sphincterotomy (group 1), and 990 patients had not taken aspirin before the sphincterotomy (group 2). The incidence of post-sphincterotomy bleeding was compared between the two groups retrospectively. RESULTS: There was no significant difference in age or gender between the two groups. The indications for EST included common bile duct stones in 12 patients (92.3%, 12/13) in group 1 and 706 patients (71.3%, 706/990) in group 2 (p = 0.124). Regarding combined disease, cholangitis was observed in 11 patients (84.6%, 11/13) in group 1 and 815 patients (82.3%, 815/990) in group 2 (p = 0.974). Clinically significant post-sphincterotomy bleeding was observed in three patients in group 2 (0.3%, 3/990) versus none in group 1. CONCLUSIONS: Taking aspirin does not appear to clinically increase bleeding after EST. Therefore, there is no definite need to stop aspirin before undergoing EST.
		                        		
		                        		
		                        		
		                        			Aspirin
		                        			;
		                        		
		                        			Cholangitis
		                        			;
		                        		
		                        			Common Bile Duct
		                        			;
		                        		
		                        			Hemorrhage
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Incidence
		                        			;
		                        		
		                        			Korea
		                        			;
		                        		
		                        			Morinda
		                        			;
		                        		
		                        			Pancreatic Diseases
		                        			;
		                        		
		                        			Retrospective Studies
		                        			;
		                        		
		                        			Sphincterotomy, Endoscopic
		                        			
		                        		
		                        	
8.Annual Report on External Quality Assessment in Urinalysis in Korea (2009).
Kyung Dong KIM ; Sun Hoe KOO ; Eui Chong KIM ; Jung Mann KIM ; Jeong Ho KIM ; Jin Q KIM ; Dae Soo MOON ; Won Ki MIN ; Chang Ho JEON ; Sung Hoon PARK ; Jeonh Il KOO ; Myung Joo KIM ; Young Choel BAE ; Woon Heung SONG ; Kwang Ho CHO ; Sung Suck CHO
Journal of Laboratory Medicine and Quality Assurance 2010;32(1):69-93
		                        		
		                        			
		                        			Three external quality assesment trials which composed of 16 control materials(12 chemical materials and four sets of microscopic photograph of urinary sediment) for interlaboratory quality control assesment in urinalysis were performed with 796, 823, and 841 participants, in each, in the year of 2009. The response rate were 97.1% (796/820), 95.5% (823/862) and 97.1% (841/866), in the first, the second and the third trials, in each. The test items include pH, glucose, protein, ketone, bilirubin, blood, urobilinogen, nitrite, leukocyte estrase, specific gravity and four microscopic photographs of urinary sediment. The survey results are summarized as follows: 1. The chemical quality control test in urinalysis revealed generally good concordance. 2. The percentage of using urinalysis analyzer was slightly decreased as 82.3% and the distribution of using reagent strip was similar to the previous year. 3. The percentage of response rate of microscopic photographs of urinary sediment was 83.5% (702/841) and the percentage of good performance of these tests ware 83.6% to 99.1%.
		                        		
		                        		
		                        		
		                        			Bilirubin
		                        			;
		                        		
		                        			Equidae
		                        			;
		                        		
		                        			Glucose
		                        			;
		                        		
		                        			Hydrogen-Ion Concentration
		                        			;
		                        		
		                        			Korea
		                        			;
		                        		
		                        			Leukocytes
		                        			;
		                        		
		                        			Quality Control
		                        			;
		                        		
		                        			Reagent Strips
		                        			;
		                        		
		                        			Specific Gravity
		                        			;
		                        		
		                        			Urinalysis
		                        			;
		                        		
		                        			Urobilinogen
		                        			
		                        		
		                        	
9.A Case of Ischemic Colitis Associated with Paclitaxel Loaded Polymeric Micelle (Genexol-PM(R)) Chemotherapy.
Choel Kyu PARK ; Hyun Wook KANG ; Tae Ok KIM ; Ho Seok KI ; Eun Young KIM ; Hee Jung BAN ; Byeong Kab YOON ; In Jae OH ; Yoo Deok CHOI ; Yong Soo KWON ; Yoo Il KIM ; Sung Chul LIM ; Young Chul KIM ; Kyu Sik KIM
Tuberculosis and Respiratory Diseases 2010;69(2):115-118
		                        		
		                        			
		                        			Paclitaxel has been widely used for treating many solid tumors. Although colonic toxicity is an unusual complication of paclitaxel-based chemotherapy, the reported toxicities include pseudomembranous colitis, neutropenic enterocolitis and on rare occasions ischemic colitis. Genexol-PM(R), which is a recently developed cremophor-free, polymeric micelle-formulated paclitaxel, has shown a more potent antitumor effect because it can increase the usual dose of paclitaxel due to that Genexol-PM(R) does not include the toxic cremophor compound. We report here on a case of a 57-year-old man with advanced non-small cell lung cancer and who developed ischemic colitis after chemotherapy with Genexol-PM(R) and cisplatin. He complained of hematochezia with abdominal pain on the left lower quadrant. Colonoscopy revealed diffuse mucosal hemorrhage and edema from the sigmoid colon to the splenic flexure. After bowel rest, he recovered from his symptoms and the follow-up colonoscopic findings showed that the mucosa was healing. Since then, he was treated with pemetrexed monotherapy instead of a paclitaxel compound and platinum.
		                        		
		                        		
		                        		
		                        			Abdominal Pain
		                        			;
		                        		
		                        			Carcinoma, Non-Small-Cell Lung
		                        			;
		                        		
		                        			Cisplatin
		                        			;
		                        		
		                        			Colitis, Ischemic
		                        			;
		                        		
		                        			Colon
		                        			;
		                        		
		                        			Colon, Sigmoid
		                        			;
		                        		
		                        			Colon, Transverse
		                        			;
		                        		
		                        			Colonoscopy
		                        			;
		                        		
		                        			Edema
		                        			;
		                        		
		                        			Enterocolitis, Neutropenic
		                        			;
		                        		
		                        			Enterocolitis, Pseudomembranous
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Gastrointestinal Hemorrhage
		                        			;
		                        		
		                        			Glutamates
		                        			;
		                        		
		                        			Guanine
		                        			;
		                        		
		                        			Hemorrhage
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Mucous Membrane
		                        			;
		                        		
		                        			Paclitaxel
		                        			;
		                        		
		                        			Platinum
		                        			;
		                        		
		                        			Polyethylene Glycols
		                        			;
		                        		
		                        			Polymers
		                        			;
		                        		
		                        			Pemetrexed
		                        			
		                        		
		                        	
10.Annual Report on External Quality Assessment in Urinalysis in Korea (2008).
Kyung Dong KIM ; Sun Hoe KOO ; Eui Chong KIM ; Jung Mann KIM ; Jeong Ho KIM ; Jin Q KIM ; Dae Soo MOON ; Won Ki MIN ; Chang Ho JEON ; Sung Hoon PARK ; Jeonh Il KOO ; Myung Joo KIM ; Young Choel BAE ; Woon Heung SONG ; Kwang Ho CHO ; Sung Suck CHO
Journal of Laboratory Medicine and Quality Assurance 2009;31(1):73-98
		                        		
		                        			
		                        			Three external quality assesment trials which composed of 16 control materials (12 chemical materials and four sets of microscopic photograph of urinary sediment) for interlaboratory quality control assesment in urinalysis were performed with 699, 718, and 732 participants, in each, in the year of 2008. The response rate were 95.4% (699/733), 96.6% (718/743) and 95.3% (732/767), in the first, the second and the third trials, in each. The test items include pH, glucose, protein, ketone, bilirubin, blood, urobilinogen, nitrite, leukocyte estrase, specific gravity and four microscopic photographs of urinary sediment. The survey results are summarized as follows: 1. The chemical quality control test in urinalysis revealed generally good concordance. 2. The percentage of using urinalysis analyzer was slightly decreased as 83.0% and the distribution of using reagent strip was similar to the previous year. 3. The percentage of response rate of microscopic photographs of urinary sediment was 81.3% (571/732) and the percentage of good performance of these tests ware 32.9% to 80.5%.
		                        		
		                        		
		                        		
		                        			Bilirubin
		                        			;
		                        		
		                        			Equidae
		                        			;
		                        		
		                        			Glucose
		                        			;
		                        		
		                        			Hydrogen-Ion Concentration
		                        			;
		                        		
		                        			Korea
		                        			;
		                        		
		                        			Leukocytes
		                        			;
		                        		
		                        			Quality Control
		                        			;
		                        		
		                        			Reagent Strips
		                        			;
		                        		
		                        			Specific Gravity
		                        			;
		                        		
		                        			Urinalysis
		                        			;
		                        		
		                        			Urobilinogen
		                        			
		                        		
		                        	
            
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