{"title":"Blood eosinophil count and treatment patterns of chronic obstructive pulmonary disease patients in South Korea using real-world data.","authors":"Chin Kook Rhee, Yu-Fan Ho, Sumitra Shantakumar, Tim Holbrook, Yein Nam, Kwang-Ha Yoo","doi":"10.3904/kjim.2024.034","DOIUrl":"10.3904/kjim.2024.034","url":null,"abstract":"<p><strong>Background/aims: </strong>Chronic obstructive pulmonary disease (COPD) management guidelines have increasingly emphasised the importance of exacerbation prevention, and the role of blood eosinophil count (BEC) as a biomarker for inhaled corticosteroids (ICS) response. This study aimed to describe the distribution and stability of BEC and understand real-world treatment patterns among COPD patients in South Korea.</p><p><strong>Methods: </strong>This was a retrospective database analysis using data obtained from the KOrea COPD Subgroup Study (KOCOSS) registry between January 2012 and August 2018. KOCOSS is an ongoing, longitudinal, prospective, multi-centre, non-interventional study investigating early COPD amongst South Korean patients. BEC stability was assessed by calculating the intra-class correlation (ICC) coefficient. \"Exacerbators\" were patients who had a record of ≥ 1 exacerbation in the 12 months prior to the visit.</p><p><strong>Results: </strong>The study included 2,661 patients with a mean age of 68.6 years. Most patients were male (92.0%). Mean BEC was significantly higher in exacerbators compared to non-exacerbators. Patients with ≥ 2 exacerbations at baseline had a less stable BEC over time (ICC = 0.44) compared to non-exacerbators (ICC = 0.57). Patients with BEC ≥ 300 cells/μL at baseline predominantly received triple therapy (43.8%).</p><p><strong>Conclusion: </strong>This study may further develop current understanding on BEC profiles amongst COPD patients in South Korea. BEC measurements are stable and reproducible among COPD patients, which supports its use as a potential biomarker.</p>","PeriodicalId":48785,"journal":{"name":"Korean Journal of Internal Medicine","volume":"40 1","pages":"78-91"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11725469/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142957310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Moojun Kim, Chang-Ok Seo, Yong-Lee Kim, Hangyul Kim, Hye Ree Kim, Yun Ho Cho, Jeong Yoon Jang, Jong-Hwa Ahn, Min Gyu Kang, Kyehwan Kim, Jin-Sin Koh, Seok-Jae Hwang, Jin Yong Hwang, Jeong Rang Park
{"title":"Predictive value and optimal cut-off level of high-sensitivity troponin T in patients with acute pulmonary embolism.","authors":"Moojun Kim, Chang-Ok Seo, Yong-Lee Kim, Hangyul Kim, Hye Ree Kim, Yun Ho Cho, Jeong Yoon Jang, Jong-Hwa Ahn, Min Gyu Kang, Kyehwan Kim, Jin-Sin Koh, Seok-Jae Hwang, Jin Yong Hwang, Jeong Rang Park","doi":"10.3904/kjim.2024.131","DOIUrl":"10.3904/kjim.2024.131","url":null,"abstract":"<p><strong>Background/aims: </strong>Elevated troponin levels predict in-hospital mortality and influence decisions regarding thrombolytic therapy in patients with acute pulmonary embolism (PE). However, the usefulness of high-sensitivity troponin T (hsTnT) regarding PE remains uncertain. We aimed to establish the optimal cut-off level and compare its performance for precise risk stratification.</p><p><strong>Methods: </strong>374 patients diagnosed with acute PE were reviewed. PE-related adverse outcomes, a composite of PE-related deaths, cardiopulmonary resuscitation incidents, systolic blood pressure < 90 mmHg, and all-cause mortality within 30 days were evaluated. The optimal hsTnT cut-off for all-cause mortality, and the net reclassification index (NRI) was used to assess the incremental value in risk stratification.</p><p><strong>Results: </strong>Among 343 normotensive patients, 17 (5.0%) experienced all-cause mortality, while 40 (10.7%) had PE-related adverse outcomes. An optimal hsTnT cut-off value of 60 ng/L for all-cause mortality (AUC 0.74, 95% CI 0.61-0.85, p < 0.001) was identified, which was significantly associated with PE-related adverse outcomes (OR 4.07, 95% CI 2.06-8.06, p < 0.001). Patients with hsTnT ≥ 60 ng/L were older, hypotensive, had higher creatinine levels, and right ventricular dysfunction signs. Combining hsTnT ≥ 60 ng/L with simplified pulmonary embolism severity index ≥1 provided additional prognostic information. Reclassification analysis showed a significant shift in risk categories, with an NRI of 1.016 ± 0.201 (p < 0.001).</p><p><strong>Conclusion: </strong>We refined troponin's predictive value in patients with acute PE, proposing a new cut-off value of hsTnT ≥ 60 ng/L. Validation through large-scale studies is essential to offer clinically useful guidance for managing patient population.</p>","PeriodicalId":48785,"journal":{"name":"Korean Journal of Internal Medicine","volume":"40 1","pages":"65-77"},"PeriodicalIF":2.2,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11725470/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142957315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Systemic venous air embolism after percutaneous lung biopsy.","authors":"Min Kyung Jung, Shin Young Kim, Jeong Min Ko","doi":"10.3904/kjim.2024.114","DOIUrl":"10.3904/kjim.2024.114","url":null,"abstract":"","PeriodicalId":48785,"journal":{"name":"Korean Journal of Internal Medicine","volume":" ","pages":"1021-1022"},"PeriodicalIF":2.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11569924/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141972131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ah-Young Kim, Min-Jeong Lee, Heejung Choi, Hankil Lee, Inwhee Park
{"title":"Kidney replacement therapy trends in end-stage kidney disease patients in South Korea during the COVID-19 pandemic.","authors":"Ah-Young Kim, Min-Jeong Lee, Heejung Choi, Hankil Lee, Inwhee Park","doi":"10.3904/kjim.2024.052","DOIUrl":"10.3904/kjim.2024.052","url":null,"abstract":"<p><strong>Background/aims: </strong>The corona virus disease 2019 posed a major risk for end-stage kidney disease (ESKD) cases. Our study aimed to assess changes in kidney replacement therapy (KRT) trends and healthcare access for these patients during the pandemic.</p><p><strong>Methods: </strong>We retrospectively analyzed nationwide data from July 2017 to June 2022 to assess changes in KRT and ESKD incidence. KRT modalities included peritoneal dialysis (PD), hemodialysis (HD), and kidney transplantation (KT). We utilized the interrupted time series (ITS) method to compare changes in KRT modality before and after the incidence of the COVID-19 pandemic.</p><p><strong>Results: </strong>ESKD incidence remained stable from 2018 to April 2022. The ITS analysis confirmed that the pandemic did not significant impact overall KRT incidence. PD cases decreased (5.7% to 1.3%), while HD cases increased (81.6% to 85%), and KT recipient remained relatively stable (12.7% to 17.3%). The hospitalization and hospital stay decreased in nursing hospital (165.01 days to 147.77 days) and general hospital (61.34 days to 55.58 days) during the pandemic, however, remained unchanged for PD and KT.</p><p><strong>Conclusion: </strong>Our findings indicate no significant changes in ESKD incidence in South Korea during the pandemic. However, there were shifts in modality distribution, with decreased PD and increased HD cases. Notably, HD cases showed a significant reduction in hospital admissions and length of stay. The healthcare system demonstrated stability during the pandemic, with minimal disruptions in ESKD care.</p>","PeriodicalId":48785,"journal":{"name":"Korean Journal of Internal Medicine","volume":" ","pages":"967-978"},"PeriodicalIF":2.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11569916/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142511040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Byung Hwa Park, Song Yi Kil, Ye Na Kim, Ho Sik Shin, Yeonsoon Jung, Hark Rim
{"title":"Kidney transplantation in the elderly.","authors":"Byung Hwa Park, Song Yi Kil, Ye Na Kim, Ho Sik Shin, Yeonsoon Jung, Hark Rim","doi":"10.3904/kjim.2024.089","DOIUrl":"10.3904/kjim.2024.089","url":null,"abstract":"<p><p>Interest in kidney transplant studies in the elderly population is increasing as more research has been conducted on the immune system. With this review, we hope to encourage the need for research on kidney transplantation in the elderly.</p>","PeriodicalId":48785,"journal":{"name":"Korean Journal of Internal Medicine","volume":" ","pages":"875-881"},"PeriodicalIF":2.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11569922/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142511041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jae Seok Jeong, Jee Hee Lee, Jun Hyung Park, Yeong Hun Choe, Yong Chul Lee
{"title":"Effective control of a severely progressive recurrent respiratory papillomatosis with repetitive cryotherapy.","authors":"Jae Seok Jeong, Jee Hee Lee, Jun Hyung Park, Yeong Hun Choe, Yong Chul Lee","doi":"10.3904/kjim.2024.166","DOIUrl":"10.3904/kjim.2024.166","url":null,"abstract":"","PeriodicalId":48785,"journal":{"name":"Korean Journal of Internal Medicine","volume":" ","pages":"1023-1024"},"PeriodicalIF":2.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11569923/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142478329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Steps to understanding diabetes kidney disease: a focus on metabolomics.","authors":"Hyo Jin Kim, Sang Heon Song","doi":"10.3904/kjim.2024.111","DOIUrl":"10.3904/kjim.2024.111","url":null,"abstract":"<p><p>Diabetic nephropathy (DN), a leading cause of chronic kidney disease and end-stage kidney disease (ESKD), poses global health challenges given its increasing prevalence. DN increases the risk of mortality and cardiovascular events. Early identification and appropriate DN management are crucial. However, current diagnostic methods rely on general traditional markers, highlighting the need for DN-specific diagnostics. Metabolomics, the study of small molecules produced by metabolic activity, promises to identify specific biomarkers that distinguish DN from other kidney diseases, decode the underlying disease mechanisms, and predict the disease course. Profound changes in metabolic pathways are apparent in individuals with DN, alterations in the tricarboxylic acid cycle and amino acid and lipid metabolism, suggestive of mitochondrial dysfunction. Metabolomics aids prediction of chronic kidney disease progression; several metabolites serve as indicators of renal functional decline and the risk of ESKD. Integration of such information with other omics data will further enhance our understanding of DN, paving the way to personalized treatment. In summary, metabolomics and multi-omics offer valuable insights into DN and are promising diagnostic and prognostic tools.</p>","PeriodicalId":48785,"journal":{"name":"Korean Journal of Internal Medicine","volume":" ","pages":"898-905"},"PeriodicalIF":2.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11569920/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142478332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Understanding the epidemiology of metabolic dysfunction-associated steatotic liver disease is essential for its management: need for attention to accurate diagnostic coding and classification.","authors":"Han Ah Lee","doi":"10.3904/kjim.2024.351","DOIUrl":"10.3904/kjim.2024.351","url":null,"abstract":"","PeriodicalId":48785,"journal":{"name":"Korean Journal of Internal Medicine","volume":"39 6","pages":"869-871"},"PeriodicalIF":2.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11569925/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142649394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jae Woo Park, Jeong-Ju Yoo, Dong Hyeon Lee, Young Chang, Hoongil Jo, Young Youn Cho, Sangheun Lee, Log Young Kim, Jae Young Jang
{"title":"Evolving epidemiology of non-alcoholic fatty liver disease in South Korea: incidence, prevalence, progression, and healthcare implications from 2010 to 2022.","authors":"Jae Woo Park, Jeong-Ju Yoo, Dong Hyeon Lee, Young Chang, Hoongil Jo, Young Youn Cho, Sangheun Lee, Log Young Kim, Jae Young Jang","doi":"10.3904/kjim.2024.164","DOIUrl":"10.3904/kjim.2024.164","url":null,"abstract":"<p><strong>Background/aims: </strong>Non-alcoholic fatty liver disease (NAFLD), now the most common chronic liver worldwide, has become a significant public health concern. This study aims to analyze the evolving epidemiology of NAFLD in South Korea.</p><p><strong>Methods: </strong>We utilized claim data from the Korean National Health Insurance Service from 2010 to 2022 to analyze NAFLD's incidence, prevalence, and progression.</p><p><strong>Results: </strong>From 2010 to 2022, the incidence and prevalence rates of NAFLD each increased from 1.87% to 4.47% and from 10.49% to 17.13%, respectively. The differences in prevalence rates between urban and rural areas were minimal in 2012 and 2022, yet both areas showed significant increases in the prevalence of NAFLD over the decade. The NAFLD group had a higher prevalence of comorbidities compared to the control group, and the most common comorbid condition was hypertension. Moreover, the ten-year incidence rates of malignancy, heart disease, and stroke in the NAFLD group were 13.42%, 15.72%, and 8.36%, respectively, which were significantly higher than those in the control group. The incidence rates of cirrhosis and hepatocellular carcinoma in NAFLD over 10 years were 2.22% and 0.77%, respectively. The total medical costs of NAFLD patients more than doubled over ten years and were all significantly higher than those of the control group.</p><p><strong>Conclusion: </strong>A significant increase in NAFLD prevalence and its impact on healthcare utilization was observed in South Korea. With NAFLD leading to serious liver diseases and increased healthcare costs, integrated care strategies that include both medical treatment and lifestyle modifications are essential.</p>","PeriodicalId":48785,"journal":{"name":"Korean Journal of Internal Medicine","volume":" ","pages":"931-944"},"PeriodicalIF":2.2,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11569921/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142511038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}