1.A single center experience on clinical outcome of fundoplication in pediatric patients: a retrospective cohort study
Yuyoung OH ; Joong Kee YOUN ; Hee-Beom YANG ; Hyun-Young KIM ; Dayoung KO
Annals of Surgical Treatment and Research 2025;108(3):177-185
Purpose:
The study aimed to evaluate the characteristics and operative-related factors in children who underwent fundoplication, analyze surgical outcomes categorized by disease entity and surgical indication, and identify prognostic factors for reoperation risk.
Methods:
A total of 109 pediatric patients who underwent fundoplication between 2008 and 2022 were retrospectively analyzed. Patients were grouped by disease entity and surgical indication. Underlying diseases, comorbidities, sex, gestational age, birth weight, preoperative symptoms, and operation-related factors were examined. Outcomes were classified as short-term and long-term adverse events. We investigated differences in clinical outcomes according to disease entity and surgical indication. Then we statistically identified preoperative predictors for the risk of reoperation.
Results:
The most common disease entity was neurological impairment (n = 92). Pulmonary comorbidity (42.2%) and aspiration/regurgitation (87.2%) were the most common. Most surgeries were performed laparoscopically (86.2%). There were 12 short-term and 25 long-term adverse events, with long-term events occurred more frequently in the neurological impairment (NIP) group compared to the non-NIP group (P = 0.04). None of the factors showed a significant relationship with the risk of reoperation.
Conclusion
Neurologically impaired children were more likely to experience long-term adverse events postfundoplication. However, no significant predictors for reoperation risk were identified.
2.Prognostic Value of Ambulatory Status at Transplant in Older Heart Transplant Recipients: Implications for Organ Allocation Policy
Junho HYUN ; Jong-Chan YOUN ; Jung Ae HONG ; Darae KIM ; Jae-Joong KIM ; Myoung Soo KIM ; Jaewon OH ; Jin-Jin KIM ; Mi-Hyang JUNG ; In-Cheol KIM ; Sang-Eun LEE ; Jin Joo PARK ; Min-Seok KIM ; Sung-Ho JUNG ; Hyun-Jai CHO ; Hae-Young LEE ; Seok-Min KANG ; Dong-Ju CHOI ; Jon A. KOBASHIGAWA ; Josef STEHLIK ; Jin-Oh CHOI
Journal of Korean Medical Science 2025;40(3):e14-
Background:
Shortage of organ donors in the Republic of Korea has become a major problem. To address this, it has been questioned whether heart transplant (HTx) allocation should be modified to reduce priority of older patients. We aimed to evaluate post-HTx outcomes according to recipient age and specific pre-HTx conditions using a nationwide prospective cohort.
Methods:
We analyzed clinical characteristics of 628 patients from the Korean Organ Transplant Registry who received HTx from January 2015 to December 2020. Enrolled recipients were divided into three groups according to age. We also included comorbidities including ambulatory status. Non-ambulatory status was defined as pre-HTx support with either extracorporeal membrane oxygenation, continuous renal replacement therapy, or mechanical ventilation.
Results:
Of the 628 patients, 195 were < 50 years, 322 were 50–64 years and 111 were ≥ 65years at transplant. Four hundred nine (65.1%) were ambulatory and 219 (34.9%) were nonambulatory. Older recipients tended to have more comorbidities, ischemic cardiomyopathy, and received older donors. Post-HTx survival was significantly lower in older recipients (P = 0.025) and recipients with non-ambulatory status (P < 0.001). However, in contrast to non-ambulatory recipients who showed significant survival differences according to the recipient’s age (P = 0.004), ambulatory recipients showed comparable outcomes (P = 0.465).
Conclusion
Our results do not support use of age alone as an allocation criterion. Transplant candidate age in combination with some comorbidities such as non-ambulatory status may identify patients at a sufficiently elevated risk at which suitability of HTx should be reconsidered.
3.Prognostic Value of Ambulatory Status at Transplant in Older Heart Transplant Recipients: Implications for Organ Allocation Policy
Junho HYUN ; Jong-Chan YOUN ; Jung Ae HONG ; Darae KIM ; Jae-Joong KIM ; Myoung Soo KIM ; Jaewon OH ; Jin-Jin KIM ; Mi-Hyang JUNG ; In-Cheol KIM ; Sang-Eun LEE ; Jin Joo PARK ; Min-Seok KIM ; Sung-Ho JUNG ; Hyun-Jai CHO ; Hae-Young LEE ; Seok-Min KANG ; Dong-Ju CHOI ; Jon A. KOBASHIGAWA ; Josef STEHLIK ; Jin-Oh CHOI
Journal of Korean Medical Science 2025;40(3):e14-
Background:
Shortage of organ donors in the Republic of Korea has become a major problem. To address this, it has been questioned whether heart transplant (HTx) allocation should be modified to reduce priority of older patients. We aimed to evaluate post-HTx outcomes according to recipient age and specific pre-HTx conditions using a nationwide prospective cohort.
Methods:
We analyzed clinical characteristics of 628 patients from the Korean Organ Transplant Registry who received HTx from January 2015 to December 2020. Enrolled recipients were divided into three groups according to age. We also included comorbidities including ambulatory status. Non-ambulatory status was defined as pre-HTx support with either extracorporeal membrane oxygenation, continuous renal replacement therapy, or mechanical ventilation.
Results:
Of the 628 patients, 195 were < 50 years, 322 were 50–64 years and 111 were ≥ 65years at transplant. Four hundred nine (65.1%) were ambulatory and 219 (34.9%) were nonambulatory. Older recipients tended to have more comorbidities, ischemic cardiomyopathy, and received older donors. Post-HTx survival was significantly lower in older recipients (P = 0.025) and recipients with non-ambulatory status (P < 0.001). However, in contrast to non-ambulatory recipients who showed significant survival differences according to the recipient’s age (P = 0.004), ambulatory recipients showed comparable outcomes (P = 0.465).
Conclusion
Our results do not support use of age alone as an allocation criterion. Transplant candidate age in combination with some comorbidities such as non-ambulatory status may identify patients at a sufficiently elevated risk at which suitability of HTx should be reconsidered.
4.A single center experience on clinical outcome of fundoplication in pediatric patients: a retrospective cohort study
Yuyoung OH ; Joong Kee YOUN ; Hee-Beom YANG ; Hyun-Young KIM ; Dayoung KO
Annals of Surgical Treatment and Research 2025;108(3):177-185
Purpose:
The study aimed to evaluate the characteristics and operative-related factors in children who underwent fundoplication, analyze surgical outcomes categorized by disease entity and surgical indication, and identify prognostic factors for reoperation risk.
Methods:
A total of 109 pediatric patients who underwent fundoplication between 2008 and 2022 were retrospectively analyzed. Patients were grouped by disease entity and surgical indication. Underlying diseases, comorbidities, sex, gestational age, birth weight, preoperative symptoms, and operation-related factors were examined. Outcomes were classified as short-term and long-term adverse events. We investigated differences in clinical outcomes according to disease entity and surgical indication. Then we statistically identified preoperative predictors for the risk of reoperation.
Results:
The most common disease entity was neurological impairment (n = 92). Pulmonary comorbidity (42.2%) and aspiration/regurgitation (87.2%) were the most common. Most surgeries were performed laparoscopically (86.2%). There were 12 short-term and 25 long-term adverse events, with long-term events occurred more frequently in the neurological impairment (NIP) group compared to the non-NIP group (P = 0.04). None of the factors showed a significant relationship with the risk of reoperation.
Conclusion
Neurologically impaired children were more likely to experience long-term adverse events postfundoplication. However, no significant predictors for reoperation risk were identified.
5.Prognostic Value of Ambulatory Status at Transplant in Older Heart Transplant Recipients: Implications for Organ Allocation Policy
Junho HYUN ; Jong-Chan YOUN ; Jung Ae HONG ; Darae KIM ; Jae-Joong KIM ; Myoung Soo KIM ; Jaewon OH ; Jin-Jin KIM ; Mi-Hyang JUNG ; In-Cheol KIM ; Sang-Eun LEE ; Jin Joo PARK ; Min-Seok KIM ; Sung-Ho JUNG ; Hyun-Jai CHO ; Hae-Young LEE ; Seok-Min KANG ; Dong-Ju CHOI ; Jon A. KOBASHIGAWA ; Josef STEHLIK ; Jin-Oh CHOI
Journal of Korean Medical Science 2025;40(3):e14-
Background:
Shortage of organ donors in the Republic of Korea has become a major problem. To address this, it has been questioned whether heart transplant (HTx) allocation should be modified to reduce priority of older patients. We aimed to evaluate post-HTx outcomes according to recipient age and specific pre-HTx conditions using a nationwide prospective cohort.
Methods:
We analyzed clinical characteristics of 628 patients from the Korean Organ Transplant Registry who received HTx from January 2015 to December 2020. Enrolled recipients were divided into three groups according to age. We also included comorbidities including ambulatory status. Non-ambulatory status was defined as pre-HTx support with either extracorporeal membrane oxygenation, continuous renal replacement therapy, or mechanical ventilation.
Results:
Of the 628 patients, 195 were < 50 years, 322 were 50–64 years and 111 were ≥ 65years at transplant. Four hundred nine (65.1%) were ambulatory and 219 (34.9%) were nonambulatory. Older recipients tended to have more comorbidities, ischemic cardiomyopathy, and received older donors. Post-HTx survival was significantly lower in older recipients (P = 0.025) and recipients with non-ambulatory status (P < 0.001). However, in contrast to non-ambulatory recipients who showed significant survival differences according to the recipient’s age (P = 0.004), ambulatory recipients showed comparable outcomes (P = 0.465).
Conclusion
Our results do not support use of age alone as an allocation criterion. Transplant candidate age in combination with some comorbidities such as non-ambulatory status may identify patients at a sufficiently elevated risk at which suitability of HTx should be reconsidered.
6.A single center experience on clinical outcome of fundoplication in pediatric patients: a retrospective cohort study
Yuyoung OH ; Joong Kee YOUN ; Hee-Beom YANG ; Hyun-Young KIM ; Dayoung KO
Annals of Surgical Treatment and Research 2025;108(3):177-185
Purpose:
The study aimed to evaluate the characteristics and operative-related factors in children who underwent fundoplication, analyze surgical outcomes categorized by disease entity and surgical indication, and identify prognostic factors for reoperation risk.
Methods:
A total of 109 pediatric patients who underwent fundoplication between 2008 and 2022 were retrospectively analyzed. Patients were grouped by disease entity and surgical indication. Underlying diseases, comorbidities, sex, gestational age, birth weight, preoperative symptoms, and operation-related factors were examined. Outcomes were classified as short-term and long-term adverse events. We investigated differences in clinical outcomes according to disease entity and surgical indication. Then we statistically identified preoperative predictors for the risk of reoperation.
Results:
The most common disease entity was neurological impairment (n = 92). Pulmonary comorbidity (42.2%) and aspiration/regurgitation (87.2%) were the most common. Most surgeries were performed laparoscopically (86.2%). There were 12 short-term and 25 long-term adverse events, with long-term events occurred more frequently in the neurological impairment (NIP) group compared to the non-NIP group (P = 0.04). None of the factors showed a significant relationship with the risk of reoperation.
Conclusion
Neurologically impaired children were more likely to experience long-term adverse events postfundoplication. However, no significant predictors for reoperation risk were identified.
7.Prognostic Value of Ambulatory Status at Transplant in Older Heart Transplant Recipients: Implications for Organ Allocation Policy
Junho HYUN ; Jong-Chan YOUN ; Jung Ae HONG ; Darae KIM ; Jae-Joong KIM ; Myoung Soo KIM ; Jaewon OH ; Jin-Jin KIM ; Mi-Hyang JUNG ; In-Cheol KIM ; Sang-Eun LEE ; Jin Joo PARK ; Min-Seok KIM ; Sung-Ho JUNG ; Hyun-Jai CHO ; Hae-Young LEE ; Seok-Min KANG ; Dong-Ju CHOI ; Jon A. KOBASHIGAWA ; Josef STEHLIK ; Jin-Oh CHOI
Journal of Korean Medical Science 2025;40(3):e14-
Background:
Shortage of organ donors in the Republic of Korea has become a major problem. To address this, it has been questioned whether heart transplant (HTx) allocation should be modified to reduce priority of older patients. We aimed to evaluate post-HTx outcomes according to recipient age and specific pre-HTx conditions using a nationwide prospective cohort.
Methods:
We analyzed clinical characteristics of 628 patients from the Korean Organ Transplant Registry who received HTx from January 2015 to December 2020. Enrolled recipients were divided into three groups according to age. We also included comorbidities including ambulatory status. Non-ambulatory status was defined as pre-HTx support with either extracorporeal membrane oxygenation, continuous renal replacement therapy, or mechanical ventilation.
Results:
Of the 628 patients, 195 were < 50 years, 322 were 50–64 years and 111 were ≥ 65years at transplant. Four hundred nine (65.1%) were ambulatory and 219 (34.9%) were nonambulatory. Older recipients tended to have more comorbidities, ischemic cardiomyopathy, and received older donors. Post-HTx survival was significantly lower in older recipients (P = 0.025) and recipients with non-ambulatory status (P < 0.001). However, in contrast to non-ambulatory recipients who showed significant survival differences according to the recipient’s age (P = 0.004), ambulatory recipients showed comparable outcomes (P = 0.465).
Conclusion
Our results do not support use of age alone as an allocation criterion. Transplant candidate age in combination with some comorbidities such as non-ambulatory status may identify patients at a sufficiently elevated risk at which suitability of HTx should be reconsidered.
8.Robotic surgeries in pediatric patients: an early experience in a single center
Ye-Chan JEONG ; Ayoung KANG ; Da-Young KO ; Joong-Kee YOUN ; Hyun-Young KIM
Annals of Surgical Treatment and Research 2024;106(6):322-329
Purpose:
Robotic surgery (RS) has the advantages of 3-dimensional view, optical magnification, motional scaling, and improved ergonomics and degree of freedom. Although RS has widely been performed on pediatric patients lately, there are still numerous restrictions and ambiguous indications. The purpose of this study was to report our early experience with RS on pediatric patients at a single center.
Methods:
Electronic medical records of patients who underwent RS with the da Vinci Xi surgical platform (Intuitive Surgical, Inc.) in Seoul National University Children Hospital from November 2019 to August 2021 were reviewed retrospectively. The median follow-up was 21.0 months (range, 12.3–31.8 months). An online survey was conducted to investigate satisfaction with robotic surgical scars.
Results:
Fifty-four patients underwent robotic surgeries (median age at operation, 11.1 years [range, 0.1–17.8 years]). In our hospital, patients had 20 different kinds of robotic surgeries, including choledochal cyst excision with hepaticojejunostomy, ovarian mass excision, and others. Median operation time and console time were 157.5 minutes (range, 45–505 minutes) and 40 minutes (range, 11–360 minutes), respectively. All cases were done without conversion into open or laparoscopic methods. Postoperative complications were found in 5 patients. According to an online survey, over half of patients (60.9%) answered that they felt satisfied with scars.
Conclusion
Our early experience demonstrated the safety and feasibility of RS in children with a range of diagnoses and complicated procedures. With more experience, RS could be an alternative to traditional open or laparoscopic operations in pediatric patients. Further studies are needed to clarify indications of pediatric RS.
9.Real-World Eligibility and Cost-Effectiveness Analysis of Empagliflozin for Heart Failure in Korea
Eui-Soon KIM ; Sun-Kyeong PARK ; Jong-Chan YOUN ; Hye Sun LEE ; Hae-Young LEE ; Hyun-Jai CHO ; Jin-Oh CHOI ; Eun-Seok JEON ; Sang Eun LEE ; Min-Seok KIM ; Jae-Joong KIM ; Kyung-Kuk HWANG ; Myeong-Chan CHO ; Shung Chull CHAE ; Seok-Min KANG ; Jin Joo PARK ; Dong-Ju CHOI ; Byung-Su YOO ; Jae Yeong CHO ; Kye Hun KIM ; Byung-Hee OH ; Barry GREENBERG ; Sang Hong BAEK
Journal of Korean Medical Science 2024;39(1):e8-
Background:
The US Food and Drug Administration (FDA) and European Medicines Agency (EMA) approved empagliflozin for reducing cardiovascular mortality and heart failure (HF) hospitalization in patients with both HF with reduced ejection fraction (HFrEF) and HF with preserved ejection fraction (HFpEF). However, limited data are available on the generalizability of empagliflozin to clinical practice. Therefore, we evaluated real-world eligibility and potential cost-effectiveness based on a nationwide prospective HF registry.
Methods:
A total of 3,108 HFrEF and 2,070 HFpEF patients from the Korean Acute Heart Failure (KorAHF) registry were analyzed. Eligibility was estimated by inclusion and exclusion criteria of EMPagliflozin outcomE tRial in Patients With chrOnic heaRt Failure With Reduced Ejection Fraction (EMPEROR-Reduced) and EMPagliflozin outcomE tRial in Patients With chrOnic heaRt Failure With Preserved Ejection Fraction (EMPEROR-Preserved) trials and by FDA & EMA label criteria. The cost-utility analysis was done using a Markov model to project the lifetime medical cost and quality-adjusted life year (QALY).
Results:
Among the KorAHF patients, 91.4% met FDA & EMA label criteria, while 44.7% met the clinical trial criteria. The incremental cost-effectiveness ratio of empagliflozin was calculated at US$6,764 per QALY in the overall population, which is far below a threshold of US$18,182 per QALY. The cost-effectiveness benefit was more evident in patients with HFrEF (US$5,012 per QALY) than HFpEF (US$8,971 per QALY).
Conclusion
There is a large discrepancy in real-world eligibility for empagliflozin between FDA & EMA labels and clinical trial criteria. Empagliflozin is cost-effective in HF patients regardless of ejection fraction in South Korea health care setting. The efficacy and safety of empagliflozin in real-world HF patients should be further investigated for a broader range of clinical applications.
10.Impact of Infection Prevention Programs on Catheter-Associated Urinary Tract Infections Analyzed in Multicenter Study
Sun Hee NA ; Joong Sik EOM ; Yu Bin SEO ; Sun Hee PARK ; Young Keun KIM ; Wonkeun SONG ; Eunjung LEE ; Sung Ran KIM ; Hyeon Mi YOO ; Heekyung CHUN ; Myoung Jin SHIN ; Su Hyun KIM ; Ji Youn CHOI ; Nan hyoung CHO ; Jin Hwa KIM ; Hee-jung SON ; Su ha HAN ; Jacob LEE
Journal of Korean Medical Science 2024;39(18):e151-
Background:
Catheter-associated urinary tract infections (CAUTIs) account for a large proportion of healthcare-associated infections and have a significant impact on morbidity, length of hospital stay, and mortality. Adherence to the recommended infection prevention practices can effectively reduce the incidence of CAUTIs. This study aimed to assess the characteristics of CAUTIs and the efficacy of prevention programs across hospitals of various sizes.
Methods:
Intervention programs, including training, surveillance, and monitoring, were implemented. Data on the microorganisms responsible for CAUTIs, urinary catheter utilization ratio, rate of CAUTIs per 1,000 device days, and factors associated with the use of indwelling catheters were collected from 2017 to 2019. The incidence of CAUTIs and associated data were compared between university hospitals and small- and medium-sized hospitals.
Results:
Thirty-two hospitals participated in the study, including 21 university hospitals and 11 small- and medium-sized hospitals. The microorganisms responsible for CAUTIs and their resistance rates did not differ between the two groups. In the first quarter of 2018, the incidence rate was 2.05 infections/1,000 device-days in university hospitals and 1.44 infections/1,000 device-days in small- and medium-sized hospitals. After implementing interventions, the rate gradually decreased in the first quarter of 2019, with 1.18 infections/1,000 device-days in university hospitals and 0.79 infections/1,000 device-days in small- and medium-sized hospitals. However, by the end of the study, the infection rate increased to 1.74 infections/1,000 device-days in university hospitals and 1.80 infections/1,000 device-days in small- and medium-sized hospitals.
Conclusion
We implemented interventions to prevent CAUTIs and evaluated their outcomes. The incidence of these infections decreased in the initial phases of the intervention when adequate support and personnel were present. The rate of these infections may be reduced by implementing active interventions such as consistent monitoring and adherence to guidelines for preventing infections.

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