1.Dietary management of pediatric patients with kidney disease: recommendations by the Korean Society of Pediatric Nephrology and the Korean Society of Clinical Nutrition
Yo Han AHN ; Hee Gyung KANG ; Jiyoung SONG ; Sangmi HAN ; Eujin PARK ; Jin-Soon SUH ; Jeong Yeon KIM ; Min Ji PARK ; Keum Hwa LEE ; Seon Hee LIM ; Kyeong Hun SHIN ; Hyunji KO ; Hyun Joo LEE ; Eunyoung JEONG ; Jinsu KIM ; Sohyun PARK ; Eonju CHOI ; Yuri SEO ; Kyooyung OH ; Jin Kyoung KIM ; Hyun Kyung LEE
Childhood Kidney Diseases 2026;30(1):4-14
Pediatric kidney disease has a relatively lower prevalence than do other pediatric conditions and has a notably different etiology from kidney diseases observed in adults. Furthermore, the pediatric population is unique in that they experience ongoing growth and development, distinguishing them from adult patients. Consequently, pediatric patients with kidney disease require more specialized and meticulous nutritional management than do adults. To address this need and promote optimal dietary practices for pediatric patients with kidney disease, pediatric nephrologists from the Korean Society of Pediatric Nephrology and nutritionists from the Korean Society of Clinical Nutrition have collaborated to establish nutritional guidelines specifically tailored to Korean dietary patterns. These guidelines offer detailed, nutrient-specific recommendations covering energy, protein, calcium, phosphorus, and potassium consumption while providing practical, culturally relevant guidance intended to support both pediatric patients and their caregivers.
2.Evaluating the Performance of Basic Local Government Initiatives in Suicide Prevention: Insights From Korea
Kyoung-Hoon KIM ; Minjae CHOI ; Yo Han LEE ; Sang Min LEE
Journal of Korean Medical Science 2026;41(1):e22-
Background:
Korea’s national suicide prevention strategies emphasize the role of local authorities. Evaluating local government performance helps determine whether suicide reduction goals are being met. This study assesses the performance of basic local government suicide prevention activities and explores their implications.
Methods:
Data were drawn from the 2023 Survey on Suicide Prevention Activities. Seventeen indicators, covering both process and outcome measures, were used to evaluate performance.A composite score (0–100) was calculated by weighting and summing the indicators, with weights based on average scores for each indicator. The 229 local governments were grouped into four categories by urbanization and population size: large Si (≥ 300,000 population), small Si (< 300,000), Gun, and Gu. The maximum–minimum (max–min) value ratio was used to examine composite score variation.
Results:
Among the 229 local governments, 29 were large Si areas, 49 small Si, 82 Gun, and 69 Gu. Significant disparities were found across several indicators, such as the operation of community suicide prevention centers, availability of mental health professionals, and allocated budgets. Composite scores were highest in large Si areas (59.8), followed by small Si (59.3), and Gu (57.9). The greatest variation was in Gun areas (max–min ratio: 2.6), suggesting inconsistent performance.
Conclusion
There are notable disparities in suicide prevention performance among Korea’s basic local governments. Customized strategies that reflect local capacities and contexts are essential to reduce these gaps and improve overall effectiveness.
3.The Vaccine Cold Chain in North Korea:Assessing the Capacity to Store Routine Vaccines and Potential to Support Pandemic Vaccination Activities
Joshua Kirabo SEMPUNGU ; Minjae CHOI ; Eun Hae LEE ; Mi-Hyui KIM ; Joon Hee HAN ; Yo Han LEE
Journal of Korean Medical Science 2025;40(10):e36-
Background:
The health system's capacity to store vaccines in North Korea has been less studied. In this study, we aimed to investigate if the current vaccine cold chain in North Korea can store routine vaccines and if it has the storage capacity to handle pandemic vaccination activities (PVAs) without interrupting the country’s successful routine immunization program.
Methods:
We used tables extracted from an evaluation report of The Global Alliance for Vaccines and Immunization (GAVI)’ Health Systems Strengthening program in North Korea from 2007 to 2014. We then used the World Health Organization’s Immunization Supply Chain Sizing Tool to estimate gaps and the cost of scaling up cold chain storage.
Results:
We found that the vaccine cold chain in North Korea has adequate storage capacity for routine vaccines. While we found a deficit of 7,172 L at the central medical warehouse (CMW) and 14,256 L at the provincial medical warehouses (PMWs), the storage at the county warehouses (CoMW) had a surplus. When assessed for PVA, we found an aggregated deficit of 115,574 L (CMW), 113,160 L (PMW), and 25,133 L (CoMW). To fill the gaps, investments of 229,917 USD, and 2,262,211 USD were estimated for routine and PVA vaccination programs, respectively.
Conclusion
As countries and the international community work to improve systems in preparation for future pandemics, there is a need to scale up the North Korean vaccine cold chain to a pandemic-ready state.
4.The Vaccine Cold Chain in North Korea:Assessing the Capacity to Store Routine Vaccines and Potential to Support Pandemic Vaccination Activities
Joshua Kirabo SEMPUNGU ; Minjae CHOI ; Eun Hae LEE ; Mi-Hyui KIM ; Joon Hee HAN ; Yo Han LEE
Journal of Korean Medical Science 2025;40(10):e36-
Background:
The health system's capacity to store vaccines in North Korea has been less studied. In this study, we aimed to investigate if the current vaccine cold chain in North Korea can store routine vaccines and if it has the storage capacity to handle pandemic vaccination activities (PVAs) without interrupting the country’s successful routine immunization program.
Methods:
We used tables extracted from an evaluation report of The Global Alliance for Vaccines and Immunization (GAVI)’ Health Systems Strengthening program in North Korea from 2007 to 2014. We then used the World Health Organization’s Immunization Supply Chain Sizing Tool to estimate gaps and the cost of scaling up cold chain storage.
Results:
We found that the vaccine cold chain in North Korea has adequate storage capacity for routine vaccines. While we found a deficit of 7,172 L at the central medical warehouse (CMW) and 14,256 L at the provincial medical warehouses (PMWs), the storage at the county warehouses (CoMW) had a surplus. When assessed for PVA, we found an aggregated deficit of 115,574 L (CMW), 113,160 L (PMW), and 25,133 L (CoMW). To fill the gaps, investments of 229,917 USD, and 2,262,211 USD were estimated for routine and PVA vaccination programs, respectively.
Conclusion
As countries and the international community work to improve systems in preparation for future pandemics, there is a need to scale up the North Korean vaccine cold chain to a pandemic-ready state.
5.The Vaccine Cold Chain in North Korea:Assessing the Capacity to Store Routine Vaccines and Potential to Support Pandemic Vaccination Activities
Joshua Kirabo SEMPUNGU ; Minjae CHOI ; Eun Hae LEE ; Mi-Hyui KIM ; Joon Hee HAN ; Yo Han LEE
Journal of Korean Medical Science 2025;40(10):e36-
Background:
The health system's capacity to store vaccines in North Korea has been less studied. In this study, we aimed to investigate if the current vaccine cold chain in North Korea can store routine vaccines and if it has the storage capacity to handle pandemic vaccination activities (PVAs) without interrupting the country’s successful routine immunization program.
Methods:
We used tables extracted from an evaluation report of The Global Alliance for Vaccines and Immunization (GAVI)’ Health Systems Strengthening program in North Korea from 2007 to 2014. We then used the World Health Organization’s Immunization Supply Chain Sizing Tool to estimate gaps and the cost of scaling up cold chain storage.
Results:
We found that the vaccine cold chain in North Korea has adequate storage capacity for routine vaccines. While we found a deficit of 7,172 L at the central medical warehouse (CMW) and 14,256 L at the provincial medical warehouses (PMWs), the storage at the county warehouses (CoMW) had a surplus. When assessed for PVA, we found an aggregated deficit of 115,574 L (CMW), 113,160 L (PMW), and 25,133 L (CoMW). To fill the gaps, investments of 229,917 USD, and 2,262,211 USD were estimated for routine and PVA vaccination programs, respectively.
Conclusion
As countries and the international community work to improve systems in preparation for future pandemics, there is a need to scale up the North Korean vaccine cold chain to a pandemic-ready state.
6.The Vaccine Cold Chain in North Korea:Assessing the Capacity to Store Routine Vaccines and Potential to Support Pandemic Vaccination Activities
Joshua Kirabo SEMPUNGU ; Minjae CHOI ; Eun Hae LEE ; Mi-Hyui KIM ; Joon Hee HAN ; Yo Han LEE
Journal of Korean Medical Science 2025;40(10):e36-
Background:
The health system's capacity to store vaccines in North Korea has been less studied. In this study, we aimed to investigate if the current vaccine cold chain in North Korea can store routine vaccines and if it has the storage capacity to handle pandemic vaccination activities (PVAs) without interrupting the country’s successful routine immunization program.
Methods:
We used tables extracted from an evaluation report of The Global Alliance for Vaccines and Immunization (GAVI)’ Health Systems Strengthening program in North Korea from 2007 to 2014. We then used the World Health Organization’s Immunization Supply Chain Sizing Tool to estimate gaps and the cost of scaling up cold chain storage.
Results:
We found that the vaccine cold chain in North Korea has adequate storage capacity for routine vaccines. While we found a deficit of 7,172 L at the central medical warehouse (CMW) and 14,256 L at the provincial medical warehouses (PMWs), the storage at the county warehouses (CoMW) had a surplus. When assessed for PVA, we found an aggregated deficit of 115,574 L (CMW), 113,160 L (PMW), and 25,133 L (CoMW). To fill the gaps, investments of 229,917 USD, and 2,262,211 USD were estimated for routine and PVA vaccination programs, respectively.
Conclusion
As countries and the international community work to improve systems in preparation for future pandemics, there is a need to scale up the North Korean vaccine cold chain to a pandemic-ready state.
7.Dietary management of pediatric patients with kidney disease: recommendations by The Korean Society of Pediatric Nephrology and The Korean Society of Clinical Nutrition
Yo Han AHN ; Hee Gyung KANG ; Jiyoung SONG ; Sangmi HAN ; Eujin PARK ; Jin-Soon SUH ; Jeong Yeon KIM ; Min Ji PARK ; Keum Hwa LEE ; Seon Hee LIM ; Kyeong Hun SHIN ; Hyunji KO ; Hyun Joo LEE ; Eunyoung JEONG ; Jinsu KIM ; Sohyun PARK ; Eonju CHOI ; Yuri SEO ; Kyooyung OH ; Jin Kyoung KIM ; Hyun Kyung LEE
Kidney Research and Clinical Practice 2025;44(6):863-874
Pediatric kidney disease has a relatively lower prevalence than do other pediatric conditions and has a notably different etiology from kidney diseases observed in adults. Furthermore, the pediatric population is unique in that they experience ongoing growth and development, distinguishing them from adult patients. Consequently, pediatric patients with kidney disease require more specialized and meticulous nutritional management than do adults. To address this need and promote optimal dietary practices for pediatric patients with kidney disease, pediatric nephrologists from the Korean Society of Pediatric Nephrology and nutritionists from the Korean Society of Clinical Nutrition have collaborated to establish nutritional guidelines specifically tailored to Korean dietary patterns. These guidelines offer detailed, nutrient-specific recommendations covering energy, protein, calcium, phosphorus, and potassium consumption while providing practical, culturally relevant guidance intended to support both pediatric patients and their caregivers.
8.Hematuria in children: causes and evaluation
Eujin PARK ; Sang Woon KIM ; Su Jin KIM ; Minki BAEK ; Yo Han AHN ; Myung Hyun CHO ; Hyun Kyung LEE ; Kyoung Hee HAN ; Yae Lim KIM ; Miyoung CHOI ; Hee Gyung KANG ; Jin-Soon SUH ; Eun Mi YANG ;
Childhood Kidney Diseases 2024;28(2):66-73
Hematuria is the presence of blood in the urine and is classified as either gross hematuria or microscopic hematuria. There are many causes of hematuria, and the differential diagnosis depends on the presence or absence of comorbidities and whether it is glomerular or non-glomerular. When hematuria in children is symptomatic or persistent, an evaluation of the cause is essential. The causes of hematuria and basic approaches to its diagnosis are discussed in this review.
9.Venous Sinus Thrombosis and Dural Arteriovenous Fistula after Herpes Simplex Encephalitis in a Patient with Protein S, Protein C Deficiency
Yujin SONG ; Hwajin CHOI ; Yunyoung CHOI ; Hyunkyum CHO ; Dongyu KIM ; Yo Han JUNG
Journal of the Korean Neurological Association 2024;42(2):162-165
Herpes simplex encephalitis is known to cause intracranial hypertension and cerebral edema. When cerebral edema occurs, venous sinuses are compressed, resulting in congestion and thrombosis. An arteriovenous fistula may form as a result, particularly in conjunction with superior sagittal sinus thrombosis. In this report, the authors describe a patient with protein S and C deficiency who developed venous sinus thrombosis and dural arteriovenous fistula after experiencing herpes simplex encephalitis.
10.Happiness and Its Association With Suicide Ideation and Attempt in Korea:The Roles of Socio-Environmental, Psychological, and Health-Related Factors
Minjae CHOI ; Joshua Kirabo SEMPUNGU ; Mi-Hyui KIM ; Joonhee HAN ; Yo Han LEE
Journal of Korean Medical Science 2024;39(44):e283-
Background:
The association between happiness and suicide behaviour across different gender and age groups remains unclear, with few studies identifying potential confounding or mediating factors that explain this association. We aimed 1) to examine the association of happiness with suicide ideation/attempt and 2) to assess the relative contribution of potential factors in explaining the associations in South Korea.
Methods:
We used data from the Korea Community Health Survey 2021, with 214,070 respondents aged over 20 years. Happiness was measured by using Cantril’s ladder of life satisfaction. Suicide ideation and suicide attempt were each measured by a single question.A hierarchical logistic regression model was used to identify the association between happiness and suicide ideation/attempt and estimate the relative importance of each socioenvironmental, psychological, and health-related factor.
Results:
Unhappiness was associated with suicide ideation/attempt across gender and age groups. The associations appeared stronger in younger rather than older adults, particularly for women aged 20–39 and 40–59 years. Psychological factors contributed the most to explaining the association across all genders and age groups. Socio-environmental factors explained the associations more among individuals aged 40–59 years and health-related factors were more pronounced in explaining the association among those aged 60 years and above, compared to other age groups.
Conclusion
Unhappiness is associated with suicide ideation/attempt. Psychological factors could largely explain this association, suggesting that improving population mental health could play an important role in increasing happiness and preventing suicide behaviour.

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