Pulmonology
Pleuroparenchymal fibroelastosis in Korean patients: clinico-radiologic-pathologic features and 2-year follow-up
Jae Ha Lee, Eun Jin Chae, Joon Seon Song, Miae Kim, Jin Woo Song
Korean J Intern Med. 2021;36(Suppl 1):S132-S141. Published online February 24, 2020
Background/Aims: Pleuroparenchymal fibroelastosis (PPFE) is a type of rare idiopathic interstitial pneumonia that is characterized by predominantly upper lobe involvement with pleural fibrosis and subjacent parenchymal fibrosis. This study aimed to determine the clinico-radiologic-pathologic feature..
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Cardiology
Effect of body mass index and abdominal obesity on mortality after percutaneous coronary intervention: a nationwide, population-based study
Woo-Hyuk Song, Eun Hui Bae, Jeong Cheon Ahn, Tae Ryom Oh, Yong-Hyun Kim, Jin Seok Kim, Sun-Won Kim, Soo Wan Kim, Kyung-Do Han, Sang-Yup Lim
Korean J Intern Med. 2021;36(Suppl 1):S90-S98. Published online February 25, 2021
Background/Aims: We investigated the impact of obesity on the clinical outcomes following percutaneous coronary intervention (PCI).
Methods: We included South Koreans aged > 20 years who underwent the Korean National Health Screening assessment between 2009 and 2012. Obesity was defined using the b..
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Long-term efficacy of vasodilating β-blocker in patients with acute myocardial infarction: nationwide multicenter prospective registry
Jaehoon Chung, Jung-Kyu Han, Han-Mo Yang, Kyung-Woo Park, Hyun-Jae Kang, Bon-Kwon Koo, Myung Ho Jeong, Hyo-Soo Kim; on behalf of investigators for Korea Acute Myocardial Infarction Registry (KAMIR)
Korean J Intern Med. 2021;36(Suppl 1):S62-S71. Published online July 3, 2020
Background/Aims: Long-term benefit of vasodilating β-blockers is unknown. This study aimed to investigate the long-term benefit of vasodilating β-blockers over conventional β-blockers in patients with acute myocardial infarction (AMI).
Methods: Using nationwide prospective multicenter Korean Acute ..
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Gastroenterology
Comparison of loss of response between anti-tumor necrosis factor alone and combined use with immunomodulators in patients with inflammatory bowel disease
Seung Wook Hong, Jaewoo Park, Hyuk Yoon, Hye Ran Yang, Cheol Min Shin, Young Soo Park, Nayoung Kim, Dong Ho Lee, Joo Sung Kim
Korean J Intern Med. 2021;36(Suppl 1):S9-S17. Published online June 25, 2020
Background/Aims: Combination therapy with immunomodulators (IMMs) was proposed as a strategy to prevent the development of loss of response (LOR) to anti-tumor necrosis factor (TNF) for patients with inflammatory bowel disease (IBD). However, the effect is unclear in patients already exposed to IMMs..
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Rheumatology
Predictors of joint damage in patients with rheumatoid arthritis: focus on short- and long-term effects of intra-articular glucocorticoid injections
Jung Hee Koh, Hanna Lee, Seung-Geun Lee
Korean J Intern Med. 2021;36(6):1515-1526. Published online February 15, 2021
Background/Aims: To investigate the short- and long-term efficacy of intra-articular glucocorticoid injections (IAGI) in patients with rheumatoid arthritis (RA).
Methods: This was a retrospective study of RA patients who had active arthritis in the hand or wrist joints and who received IAGI (or not..
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Cardiology
Long-term effects of the mean hemoglobin A1c levels after percutaneous coronary intervention in patients with diabetes
Jaekyung Bae, Ji-Hyung Yoon, Jung-Hee Lee, Jong-Ho Nam, Chan-Hee Lee, Jang-Won Son, Ung Kim, Jong-Seon Park, Dong-Gu Shin
Korean J Intern Med. 2021;36(6):1365-1376. Published online October 14, 2021
Background/Aims: The clinical benefit of strict blood glucose-lowering therapy for patients with coronary artery disease (CAD) is still debated. We aimed to evaluate the long-term outcomes of patients with diabetes who underwent percutaneous coronary intervention (PCI), according to the mean hemoglo..
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Gastroenterology
Impact of non-hepatic hyperammonemia on mortality in intensive care unit patients: a retrospective cohort study
Jae Heon Kim, Hankyu Jeon, Sang Soo Lee, I Re Heo, Jung Woo Choi, Hee Jin Kim, Ra Ri Cha, Jae Min Lee, Hyun Jin Kim
Korean J Intern Med. 2021;36(6):1347-1355. Published online July 15, 2021
Background/Aims: The effect of hyperammonemia on the mortality in patients with liver cirrhosis is well documented. However, little is known about the impact of hyperammonemia on mortality among intensive care unit patients without hepatic disease. We aimed to investigate factors associated with non..
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Eosinophilic endotype of chronic obstructive pulmonary disease: similarities and differences from asthma
Andrew Li, Hiang Ping Chan, Phyllis X.L. Gan, Mei Fong Liew, W.S. Fred Wong, Hui-Fang Lim
Korean J Intern Med. 2021;36(6):1305-1319. Published online October 12, 2021
Approximately 25% to 40% of patients with chronic obstructive pulmonary disease (COPD) have the eosinophilic endotype. It is important to identify this group accurately because they are more symptomatic and are at increased risk for exacerbations and accelerated decline in forced expiratory volume i..
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Recent advances in airway imaging using micro-computed tomography and computed tomography for chronic obstructive pulmonary disease
Naoya Tanabe, Toyohiro Hirai
Korean J Intern Med. 2021;36(6):1294-1304. Published online October 6, 2021
Chronic obstructive pulmonary disease (COPD) is a complex lung disease characterized by a combination of airway disease and emphysema. Emphysema is classified as centrilobular emphysema (CLE), paraseptal emphysema (PSE), or panlobular emphysema (PLE), and airway disease extends from the respiratory,..
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Role of asymptomatic hyperuricemia in the progression of chronic kidney disease and cardiovascular disease
Yousuf Waheed, Fan Yang, Dong Sun
Korean J Intern Med. 2021;36(6):1281-1293. Published online July 8, 2021
Previous research has investigated whether hyperuricemia serves as an independent risk factor for cardiovascular and renal diseases. Hyperuricemia is defined as an abnormally high level of uric acid (UA; i.e., serum urate level > 6.8 mg/dL). Hyperuricemia has been considered a complication of chroni..
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Hepatic sinusoidal obstruction syndrome/veno-occlusive disease after hematopoietic cell transplantation: historical and current considerations in Korea
Jae-Ho Yoon, Chul Won Choi, Jong-Ho Won
Korean J Intern Med. 2021;36(6):1261-1280. Published online September 24, 2021
Hepatic sinusoidal obstruction syndrome/veno-occlusive disease (SOS/VOD) is a rare but severe complication of hematopoietic cell transplantation (HCT) showing high mortality. Multiple risk factors for SOS/VOD were identified, but it is often confused with other hepatic complications due to nonspecif..
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Pulmonology
Changes in respiratory virus infection trends during the COVID-19 pandemic in South Korea: the effectiveness of public health measures
Ji Young Park, Hwan Il Kim, Joo-Hee Kim, Sunghoon Park, Yong Il Hwang, Seung Hun Jang, Yong Kyun Kim, Ki-Suck Jung
Korean J Intern Med. 2021;36(5):1157-1168. Published online August 18, 2021
Background/Aims: Studies on the effectiveness of public health measures to prevent respiratory virus transmission in real-world settings are lacking. We investigated the effectiveness of universal mask use and adherence to other personal preventive measures on the changing viral respiratory infectio..
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Patterns of medical care utilization according to environmental factors in asthma and chronic obstructive pulmonary disease patients
Eun-Jung Jo, Min-Hyeok Choi, Chang-Hoon Kim, Kyung-Mi Won, Yoo-Keun Kim, Ju-Hee Jeong, Hye Yeon An, Mi-Kyoung Hwang, Hye-Kyung Park
Korean J Intern Med. 2021;36(5):1146-1156. Published online February 10, 2021
Background/Aims: Weather and air pollution are associated with the exacerbation of respiratory diseases. We investigated patterns of medical care use according to meteorological factors and air pollution in patients with asthma or chronic obstructive pulmonary disease (COPD).
Methods: We analyzed t..
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Estimating the burden of nosocomial exposure to tuberculosis in South Korea, a nationwide population based cross-sectional study
Hyung Woo Kim, Jun-Pyo Myong, Ju Sang Kim
Korean J Intern Med. 2021;36(5):1134-1145. Published online December 18, 2020
Background/Aims: The aim of the study was to investigate the current nationwide burden of nosocomial exposure to tuberculosis (TB) using national health insurance claims data.
Methods: All patients who had claims for drug susceptibility testing for TB from 2012 to 2016, which indicated culture-prov..
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Improving the care of inflammatory bowel disease (IBD) patients: perspectives and strategies for IBD center management
Jihye Park, Sinyoung Park, Shin Ae Lee, Soo Jung Park, Jae Hee Cheon
Korean J Intern Med. 2021;36(5):1040-1048. Published online August 5, 2021
The incidence and prevalence rates of inf lammatory bowel disease (IBD) have been increasing in East Asian countries over the past few decades. Accordingly, the general understanding and awareness of IBD among healthcare professionals has increased considerably in this region. This increase is ultim..
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Infectious diseases
Varicella zoster virus (VZV)-specific immunity and subclinical VZV reactivation in patients with autoimmune diseases
Kwang-Hoon Lee, Sungim Choi, Ji-Soo Kwon, Sung-Han Kim, Seong Yeon Park
Korean J Intern Med. 2021;36(4):992-1000. Published online June 15, 2021
Background/Aims: The risk of herpes zoster (HZ) is increased in patients with autoimmune diseases (AID), probably due to immunosuppressive therapy.
Methods: This prospective cross-sectional study investigated varicella zoster virus (VZV)-specific immunity in relation to subclinical VZV reactivation..
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Nephrology
Role of Akt1 in renal fibrosis and tubular dedifferentiation during the progression of acute kidney injury to chronic kidney disease
Il Young Kim, Yeon Kyeong Park, Sang Heon Song, Eun Young Seong, Dong Won Lee, Sun Sik Bae, Soo Bong Lee
Korean J Intern Med. 2021;36(4):962-974. Published online December 16, 2020
Background/Aims: Acute kidney injury (AKI) is an underestimated yet important risk factor for the development of chronic kidney disease (CKD), characterized by tubulointerstitial fibrosis and tubular dedifferentiation. Tubular dedifferentiation, which is associated with the loss of epithelial marker..
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Gastroenterology
Subclinical sacroiliitis detected by abdominopelvic computed tomography in Korean patients with Crohn’s disease
You-Jung Ha, Hyo Jin Kim, Eugene Lee, Ji Hye Park, Young Soo Park, Yun Jong Lee, Yusuhn Kang, Hyuk Yoon
Korean J Intern Med. 2021;36(4):868-877. Published online March 22, 2021
Background/Aims: Sacroiliitis is a frequent extraintestinal manifestation of inflammatory bowel diseases (IBDs). This study aimed to assess the prevalence of sacroiliitis using a validated screening tool based on abdominopelvic computed tomography (APCT) in Korean patients with Crohn’s disease (CD..
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Clinical and genetic characteristics of Korean autosomal dominant polycystic kidney disease patients
Yun Kyu Oh, Hayne Cho Park, Hyunjin Ryu, Yong-Chul Kim, Kook-Hwan Oh
Korean J Intern Med. 2021;36(4):767-779. Published online July 1, 2021
Autosomal dominant polycystic kidney disease (ADPKD) is the most common hereditary kidney disease. It is characterized by cyst growth in the kidneys, resulting in kidney enlargement and end-stage kidney disease. The polycystic kidney disease 1 (PKD1) and PKD2 have been identified as ge..
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Rheumatology
Clinical features of Korean elderly patients with antineutrophil cytoplasmic antibody-associated vasculitis
Byung-Woo Yoo, Jason Jungsik Song, Yong-Beom Park, Sang-Won Lee
Korean J Intern Med. 2021;36(3):731-741. Published online August 20, 2020
Background/Aims: We compared the clinical and laboratory data between elderly and non-elderly patients with antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) at diagnosis; further, we investigated the predictors at diagnosis for all-cause mortality and end-stage renal disease (E..
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