1.Development and Application of New Risk-Adjustment Models to Improve the Current Model for Hospital Standardized Mortality Ratio in South Korea
Hyeki PARK ; Ji-Sook CHOI ; Min Sun SHIN ; Soomin KIM ; Hyekyoung KIM ; Nahyeong IM ; Soon Joo PARK ; Donggyo SHIN ; Youngmi SONG ; Yunjung CHO ; Hyunmi JOO ; Hyeryeon HONG ; Yong-Hwa HWANG ; Choon-Seon PARK
Yonsei Medical Journal 2025;66(3):179-186
Purpose:
This study assessed the validity of the hospital standardized mortality ratio (HSMR) risk-adjusted model by comparing models that include clinical information and the current model based on administrative information in South Korea.
Materials and Methods:
The data of 53976 inpatients were analyzed. The current HSMR risk-adjusted model (Model 1) adjusts for sex, age, health coverage, emergency hospitalization status, main diagnosis, surgery status, and Charlson Comorbidity Index (CCI) using administrative data. As candidate variables, among clinical information, the American Society of Anesthesiologists score, Acute Physiology and Chronic Health Evaluation (APACHE) II, Simplified Acute Physiology Score (SAPS) 3, present on admission CCI, and cancer stage were collected. Surgery status, intensive care in the intensive care unit, and CCI were selected as proxy variables among administrative data. In-hospital death was defined as the dependent variable, and a logistic regression analysis was performed. The statistical performance of each model was compared using C-index values.
Results:
There was a strong correlation between variables in the administrative data and those in the medical records. The C-index of the existing model (Model 1) was 0.785; Model 2, which included all clinical data, had a higher C-index of 0.857. In Model 4, in which APACHE II and SAPS 3 were replaced with variables recorded in the administrative data from Model 2, the C-index further increased to 0.863.
Conclusion
The HSMR assessment model improved when clinical data were adjusted. Simultaneously, the validity of the evaluation method could be secured even if some of the clinical information was replaced with the information in the administrative data.
2.Asia-Pacific Menopause Federation Consensus Statement on the Management of Menopause 2024
Seng Bin ANG ; Stella Rizalina Sasha SUGIANTO ; Felicia Clara Jun Hui TAN ; Sonia DAVISON ; Qi YU ; Masakazu TERAUCHI ; Mee-Ran KIM ; Jignesh SHAH ; Shaikh Zinnat Ara NASREEN ; Choon Moy HO ; Enkhee SODNOMDORJ ; Muhammad Fidel Ganis SIREGAR ; Rubina HUSSAIN ; Ma Corazon Zaida NOBLEJAS-GAMILLA ; Yang CHUA ; Yung-Chieh TSAI ; Unnop JAISAMRARN
Journal of Menopausal Medicine 2025;31(1):3-11
Objectives:
This study aimed to achieve expert consensus on menopause management in the Asia-Pacific region, taking into account patient diversity, the latest evidence, and current treatment options.
Methods:
A focused literature search was performed to identify clinical practice statements on menopause management. Menopause experts were nominated by members of the Asia-Pacific Menopause Federation (APMF) society. A modified Delphi methodology, involving iterative rounds of anonymous surveys, was employed until consensus was reached for each statement. Consensus was defined as ≥ 70% of experts voting ‘agree’ or ‘strongly agree’ for a given clinical practice statement.
Results:
A total of 39 participants from 14 different APMF member societies were involved. Eighty-five clinical practice statements reached a consensus. Based on the clinical practice statements, an algorithm was created as a tool to guide clinicians on menopause management. APMF experts agreed that, in addition to vasomotor symptoms, Asian women experiencing somatic or psychological symptoms may also benefit from treatment with menopausal hormone therapy (MHT). MHT should also be considered for the prevention of osteoporosis in asymptomatic peri- and postmenopausal women.
Conclusions
This APMF consensus statement supersedes the previous one published in 2008. It provides guidance to gynecologists, endocrinologists, family physicians, and other healthcare professionals in delivering optimal care to menopausal women in the ethnically and culturally diverse Asia-Pacific region.
4.O-arm navigation-based transforaminal unilateral biportal endoscopic discectomy for upper lumbar disc herniation: an innovative preliminary study
Dong Hyun LEE ; Choon Keun PARK ; Jin-Sung KIM ; Jin Sub HWANG ; Jin Young LEE ; Dong-Geun LEE ; Jae-Won JANG ; Jun Yong KIM ; Yong-Eun CHO ; Dong Chan LEE
Asian Spine Journal 2025;19(2):194-204
Methods:
The UBE approach targeted the ventral part of the superior articular process in the transforaminal UBE setup, specifically for upper lumbar disc herniation, with an approach angle of approximately 30º on the axial plane. Intraoperative navigation was employed to improve puncture accuracy for this relatively unfamiliar surgical technique. Navigation-assisted transforaminal UBE lumbar discectomy was performed on four patients presenting with back or leg discomfort due to disc herniation at the L1–L2 or L2–L3 levels.
Results:
All patients experienced symptom relief and were discharged on postoperative day 2.
Conclusions
Transforaminal UBE lumbar discectomy is a viable therapeutic option for upper lumbar paracentral disc herniation, which is typically associated with poor prognosis. Integrating navigation integration into this novel approach enhances precision and safety.
5.Structure-Activity Relationship of NMDA Receptor Ligands and Their Activities on the ERK Activation through Metabotropic Signaling Pathway
Dooti KUNDU ; Mengling WANG ; Suresh PAUDEL ; Shujie WANG ; Choon-Gon JANG ; Kyeong-Man KIM
Biomolecules & Therapeutics 2025;33(2):278-285
The N-methyl-D-aspartate receptor (NMDA-R) subunit GluN2B is abundantly expressed in brain regions critical for synaptic plasticity and cognitive processes. This study investigated the structure-activity relationships (SAR) of NMDA-R ligands using GluN2B as a molecular target. Thirty potential NMDA-R antagonists were categorized into two structural classes: 1-(1-phenylcyclohexyl) amines (series A) and α-amino-2-phenylcyclohexanone derivatives (series B). In series A compounds, the phenyl ring and R1 substituents were positioned at the carbon center of the cyclohexyl ring, with R2 substituents at the para- or meta-positions of the phenyl ring. SAR analysis revealed optimal binding affinity when R1 was carbonyl (C=O) and R2 was 4-methoxy (4-OMe). Series B compounds featured a cyclohexanone scaffold with NH-R1 at the α-position and a phenyl ring bearing R2 substituents at ortho-, meta-, or para-positions. Maximum binding affinity was achieved with R1 as hydrogen (H) and R2 as hydroxyl (OH). Compounds were assessed for GluN2B-mediated ERK activation to evaluate potential metabotropic signaling properties. Approximately 50% of the compounds demonstrated ERK activation through a non-ionotropic signaling cascade involving Src, phosphatidylinositol 3-kinase, and protein kinase C. This study elucidated key structural determinants for NMDA-R binding and characterized a novel metabotropic signaling pathway. Notably, our findings suggest that compounds acting as antagonists at the ionotropic site may simultaneously function as agonists through non-ionotropic mechanisms.
6.A Novel Histone Deacetylase 6 Inhibitor, 4-FHA, Improves Scopolamine-Induced Cognitive and Memory Impairment in Mice
Jee-Yeon SEO ; Jisoo KIM ; Yong-Hyun KO ; Bo-Ram LEE ; Kwang-Hyun HUR ; Young Hoon JUNG ; Hyun-Ju PARK ; Seok-Yong LEE ; Choon-Gon JANG
Biomolecules & Therapeutics 2025;33(2):268-277
Although histone deacetylase 6 (HDAC6) is considered a therapeutic target for Alzheimer’s disease (AD), its role in cholinergic dysfunction in AD patients remains unclear. This study investigated the effects of (E)-3-(2-(4-fluorostyryl)thiazol-4-yl)-N-hydroxypropanamide (4-FHA), a new synthetic HDAC6 inhibitor, on cognitive and memory impairments in a scopolamine-induced-AD mouse model. Behaviorally, 4-FHA improved scopolamine-induced memory impairments in the Y-maze, passive avoidance, and Morris water maze tests. In addition, 4-FHA ameliorated scopolamine-induced cognitive impairments in the novel object recognition and place recognition tests. Furthermore, 4-FHA increased acetylation of α-tubulin (a major HDAC6 substrate); the expression of BDNF; and the phosphorylation of ERK 1/2, CREB, and ChAT in the hippocampus of scopolamine-treated mice. In summary, according to our data 4-FHA, an HDAC6 inhibitor, improved the cognitive and memory deficits of the AD mouse model by normalizing BDNF signaling and synaptic transmission, suggesting that 4-FHA might be a potential therapeutic candidate for AD.
7.Optimizing 5-aminosalicylate for moderate ulcerative colitis: expert recommendations from the Asia-Pacific, Middle East, and Africa Inflammatory Bowel Disease Coalition
Filiz AKYÜZ ; Yoon Kyo AN ; Jakob BEGUN ; Satimai ANIWAN ; Huu Hoang BUI ; Webber CHAN ; Chang Hwan CHOI ; Nazeer CHOPDAT ; Susan J CONNOR ; Devendra DESAI ; Emma FLANAGAN ; Taku KOBAYASHI ; Allen Yu-Hung LAI ; Rupert W LEONG ; Alex Hwong-Ruey LEOW ; Wai Keung LEUNG ; Julajak LIMSRIVILAI ; Virly Nanda MUZELLINA ; Kiran PEDDI ; Zhihua RAN ; Shu Chen WEI ; Jose SOLLANO ; Michelle Mui Hian TEO ; Kaichun WU ; Byong Duk YE ; Choon Jin OOI
Intestinal Research 2025;23(1):37-55
The lack of clear definition and classification for “moderate ulcerative colitis (UC)” creates ambiguity regarding the suitability of step-up versus top-down treatment approaches. In this paper, experts address crucial gaps in assessing and managing moderate UC. The Asia-Pacific, Middle East, and Africa Inflammatory Bowel Disease Coalition comprised 24 experts who convened to share, discuss and vote electronically on management recommendations for moderate UC. Experts emphasized that the goal of treating UC is to attain clinical, biomarker, and endoscopic remission using cost-effective strategies such as 5-aminosalicylates (5-ASAs), well-tolerated therapy that can be optimized to improve outcomes. Experts agreed that 5-ASA therapy could be optimized by maximizing dosage (4 g/day for induction of remission), combining oral and topical administration, extending treatment duration beyond 8 weeks, and enhancing patient adherence through personalized counselling and reduced pill burden. Treatment escalation should ideally be reserved for patients with predictors of aggressive disease or those who do not respond to 5-ASA optimization. Premature treatment escalation to advanced therapies (including biologics and oral small molecules) may have long-term health and financial consequences. This paper provides consensus-based expert recommendations and a treatment algorithm, based on current evidence and practices, to assist decision-making in real-world settings.
8.Updates of Evidence-Based Nursing Practice Guidelines for Peripheral Intravenous Infusion Therapy
Ihn Sook JEONG ; Chan Mi KANG ; Kyeong Sug KIM ; Hyun Lim KIM ; Jeong Ok PARK ; Joohyun LEE ; Kyung Choon LIM ; Go Eun CHOI
Journal of Korean Clinical Nursing Research 2025;31(1):1-14
Purpose:
This study was conducted to update the practice guidelines for intravenous infusion therapy published in 2017, focusing on the most recent evidence for peripheral intravenous infusion therapy.
Methods:
The guideline update was conducted using the 22-step methodology.
Results:
The updated guidelines consist of 17 domains and 235 recommendations (including 284 sub-recommendations). The domains are as follows: general instructions (5 items), peripheral catheter selection (7), catheter insertion site selection (11), management during peripheral catheter insertion (10), post-insertion management (30), perfusion and locking (17), blood sampling via peripheral catheters(6), exchange and removal of peripheral catheters (6), infusion set management (14), add-on devices (32), complications (25), chemotherapy infusions (10), PCA infusions (7), parenteral nutrition (20), transfusion therapy (23), education (5), and documentation and reporting (7). The evidence levels for these recommendations are as follows: 27(9.5%) at level I, 3 (1.1%) at level I A/P, 118 (41.5%) at level II, and 136 (47.9%) at level III.Recommendation grades are categorized as follows: 30 (10.6%) at level A, 118 (41.5%) at level B, and 136(47.9%) at level C. Of these, 73 (25.7%) recommendations were newly developed, 49 (17.3%) underwent major revisions, and 147 (51.7%) underwent minor revisions.
Conclusion
The updated practice guideline, based on the latest evidence, is anticipated to enhance nursing practice related to peripheral intravenous infusion therapy.
9.Woman Doctor Leadership on the Editorial Board of the Korean Medical Journals
Eunji KO ; Hyebin JEON ; Yun Hee KIM ; Choon Hak LIM
Journal of Korean Medical Science 2025;40(13):e47-
Background:
The proportion of women doctors has been rising globally and South Korea mirrors this trend. Despite this growth, women doctors’ representation in leadership roles in academic medical fields remains scarce. This study investigates the representation and trends of women doctors’ leadership in editorial boards of South Korean medical journals, and compares the gender ratio of specialists.
Methods:
This non-clinical data analysis examined the editorial boards of 45 major medical academic journals published in 2015, 2020, and 2024 to investigate women leadership within journal editorial boards, compares the gender ratio of specialists, and observed changes over time.
Results:
The study included data from 1,475 members in 2015, 1,598 in 2020, and 2,531 in 2024.In 2020, 23.8% of specialists were women, but only 19.5% of editorial board members were women (P < 0.001). Nine journals had less than 10% women representation on their editorial boards. Over nine years, women representation on editorial boards increased from 16.8% in 2015 to 21.3% in 2024 (P = 0.001), with significant increases in societies of clinical medicine (14.6% vs. 20.0%; P < 0.001) but not in basic medicine. Journals with women editors-in-chief had significantly higher women representation on their boards compared to ones with male editorsin-chief (36.7 ± 13.5% vs. 18.4 ± 10.9%, P < 0.001). The proportion of women senior editorial roles and that of women executive society members showed a significant positive correlation with the proportion of women on editorial boards (P < 0.001 and P < 0.001, respectively).
Conclusion
The study highlights the considerable underrepresentation of women in editorial leadership compared to their presence as specialists. However, the number of women editorial board members has increased over the past decade, especially in clinical medicine. Women doctors’ leadership positively correlates with higher women participation on boards, which suggests that promoting women leaders could enhance gender diversity in academic medicine. Further qualitative research is needed to explore the impact of women doctors’ leadership on medical research and patient outcomes. This study provides critical insights into gender disparities in South Korean medical academia and underscores the need for policies to promote women doctors’ leadership.
10.Asia-Pacific Menopause Federation Consensus Statement on the Management of Menopause 2024
Seng Bin ANG ; Stella Rizalina Sasha SUGIANTO ; Felicia Clara Jun Hui TAN ; Sonia DAVISON ; Qi YU ; Masakazu TERAUCHI ; Mee-Ran KIM ; Jignesh SHAH ; Shaikh Zinnat Ara NASREEN ; Choon Moy HO ; Enkhee SODNOMDORJ ; Muhammad Fidel Ganis SIREGAR ; Rubina HUSSAIN ; Ma Corazon Zaida NOBLEJAS-GAMILLA ; Yang CHUA ; Yung-Chieh TSAI ; Unnop JAISAMRARN
Journal of Menopausal Medicine 2025;31(1):3-11
Objectives:
This study aimed to achieve expert consensus on menopause management in the Asia-Pacific region, taking into account patient diversity, the latest evidence, and current treatment options.
Methods:
A focused literature search was performed to identify clinical practice statements on menopause management. Menopause experts were nominated by members of the Asia-Pacific Menopause Federation (APMF) society. A modified Delphi methodology, involving iterative rounds of anonymous surveys, was employed until consensus was reached for each statement. Consensus was defined as ≥ 70% of experts voting ‘agree’ or ‘strongly agree’ for a given clinical practice statement.
Results:
A total of 39 participants from 14 different APMF member societies were involved. Eighty-five clinical practice statements reached a consensus. Based on the clinical practice statements, an algorithm was created as a tool to guide clinicians on menopause management. APMF experts agreed that, in addition to vasomotor symptoms, Asian women experiencing somatic or psychological symptoms may also benefit from treatment with menopausal hormone therapy (MHT). MHT should also be considered for the prevention of osteoporosis in asymptomatic peri- and postmenopausal women.
Conclusions
This APMF consensus statement supersedes the previous one published in 2008. It provides guidance to gynecologists, endocrinologists, family physicians, and other healthcare professionals in delivering optimal care to menopausal women in the ethnically and culturally diverse Asia-Pacific region.

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