1.Safety and Efficacy of Pivot-Balloon for Severe Tricuspid Regurgitation:The First-in-Man Experiences
Eun Kyoung KIM ; Min-Ku CHON ; Hyun-Sook KIM ; Yong-Hyun PARK ; Sang-Hyun LEE ; Ki Seok CHOO ; Hyung Gon JE ; Dae-Hee KIM ; Tae Oh KIM ; Yoon Seok KOH ; Jae-Hyeong PARK ; Jae-Hwan LEE ; Young Jin CHOI ; Eun Seok SHIN ; Hyuck-Jun YOON ; Seung-Whan LEE ; Joo-Yong HAHN
Korean Circulation Journal 2025;55(1):20-31
Background and Objectives:
Among various emerging catheter-based treatments for severe tricuspid regurgitation (TR), the spacer device can reduce the regurgitation orifice without manipulating the valve leaflet. However, its clinical application has been hampered by traumatic anchoring to the myocardium and the coaxial alignment of the balloon resulting in insufficient TR reduction. This study aimed to evaluate the early-stage safety, technical feasibility, and preliminary efficacy of the novel atraumatic vertical spacer in patients with isolated severe TR.
Methods:
All procedures were guided by fluoroscopy and transthoracic echocardiography.The maximum device placement time with an inflated balloon was 24 hours. Changes in the amount of TR, right ventricular function, and patient hemodynamics were measured during balloon deployment.
Results:
A total of 7 patients (median age 74), underwent successful device implantation without procedure-related complications. During balloon inflation (median 25 minutes), there were no symptoms or signs indicative of TR intolerance. TR was reduced by 1 grade or greater in all patients, with 2 patients exhibiting a reduction of 3 grades, from torrential TR to a moderate degree. Mild TR after balloon inflation was achieved in 3 patients with baseline severe TR. The TR reduction observed during initial balloon deployment was sustained during the subsequent balloon maintenance period.
Conclusions
The Pivot-balloon procedure was safe, technically feasible, and effective in reducing TR in patients with severe TR. No periprocedural complications or adverse cardiovascular events were reported during device placement with TR reduction observed in all patients. However, longer-term follow-up is needed to confirm safety and treatment effect.
2.Safety and Efficacy of Pivot-Balloon for Severe Tricuspid Regurgitation:The First-in-Man Experiences
Eun Kyoung KIM ; Min-Ku CHON ; Hyun-Sook KIM ; Yong-Hyun PARK ; Sang-Hyun LEE ; Ki Seok CHOO ; Hyung Gon JE ; Dae-Hee KIM ; Tae Oh KIM ; Yoon Seok KOH ; Jae-Hyeong PARK ; Jae-Hwan LEE ; Young Jin CHOI ; Eun Seok SHIN ; Hyuck-Jun YOON ; Seung-Whan LEE ; Joo-Yong HAHN
Korean Circulation Journal 2025;55(1):20-31
Background and Objectives:
Among various emerging catheter-based treatments for severe tricuspid regurgitation (TR), the spacer device can reduce the regurgitation orifice without manipulating the valve leaflet. However, its clinical application has been hampered by traumatic anchoring to the myocardium and the coaxial alignment of the balloon resulting in insufficient TR reduction. This study aimed to evaluate the early-stage safety, technical feasibility, and preliminary efficacy of the novel atraumatic vertical spacer in patients with isolated severe TR.
Methods:
All procedures were guided by fluoroscopy and transthoracic echocardiography.The maximum device placement time with an inflated balloon was 24 hours. Changes in the amount of TR, right ventricular function, and patient hemodynamics were measured during balloon deployment.
Results:
A total of 7 patients (median age 74), underwent successful device implantation without procedure-related complications. During balloon inflation (median 25 minutes), there were no symptoms or signs indicative of TR intolerance. TR was reduced by 1 grade or greater in all patients, with 2 patients exhibiting a reduction of 3 grades, from torrential TR to a moderate degree. Mild TR after balloon inflation was achieved in 3 patients with baseline severe TR. The TR reduction observed during initial balloon deployment was sustained during the subsequent balloon maintenance period.
Conclusions
The Pivot-balloon procedure was safe, technically feasible, and effective in reducing TR in patients with severe TR. No periprocedural complications or adverse cardiovascular events were reported during device placement with TR reduction observed in all patients. However, longer-term follow-up is needed to confirm safety and treatment effect.
3.Asparaginase-Associated Pancreatitis and Pancreatic Pseudocyst Managed with Endoscopic Cystogastrostomy in Adult Acute Lymphoblastic Leukemia
Gyewon PARK ; Eun Sun KIM ; Hyuk Soon CHOI ; Bora KEUM ; Yoon Tae JEEN ; Hoon Jai CHUN ; Hong Sik LEE ; Jae Min LEE
Korean Journal of Pancreas and Biliary Tract 2025;30(1):31-35
Anticancer treatment for acute lymphocytic leukemia is based on drugs such as methotrexate, 6-mercaptopurine, vincristine, and asparaginase. Asparaginase-related pancreatitis is known to have an incidence of up to 18%, and is a major cause of discontinuation of anticancer treatment for leukemia due to acute onset and chronic complications. There were various cases of treatment of peripancreatic fluid retention caused by anticancer drugs in leukemia patients. Use of lumen-apposing metal stents (LAMS) for walled-off necrosis (WON) drainage has recently increased. The electrocautery-enhanced delivery system allowed simpler and faster stent placement, streamlining the overall procedure and potentially reducing procedure time. Therefore, favorable outcomes have been reported with the use of LAMS for endoscopic drainage of various conditions. In this paper, we discuss a case in which hot-system LAMS was performed to treat L-asparaginase-induced acute pancreatitis and pancreatic pseudocyst in an adult patient with acute lymphoblastic leukemia.
4.Brain Injury and Short-Term Neurodevelopmental Outcomes in Neonates Treated with Respiratory Extracorporeal Membrane Oxygenation: A Single-Center Experience
Keon Hee SEOL ; Byong Sop LEE ; Kyusang YOO ; Joo Hyung ROH ; Jeong Min LEE ; Jung Il KWAK ; Tae-Gyeong KIM ; Juhee PARK ; Ha Na LEE ; Chae Young KIM ; Soo Hyun KIM ; Ji Yoon JEONG ; Euiseok JUNG
Neonatal Medicine 2025;32(1):39-48
Purpose:
This study aimed to characterize the clinical patterns and severity of brain injury in neonates who survived extracorporeal membrane oxygenation (ECMO) therapy for acute respiratory failure during the neonatal period, to evaluate their short-term neurodevelopmental outcomes, and to identify the factors associated with these outcomes.
Methods:
We retrospectively reviewed the medical records of neonates who survived ECMO between 2018 and 2024. Based on brain magnetic resonance imaging (MRI) findings, the patients were classified into two groups: no/mild and moderate/severe brain injury. Neurodevelopmental outcomes were assessed at 12–40 months of age using the Bayley Scale of Infant Development II/III and/or the Korean Developmental Screening Test.
Results:
Among the 19 neonates included in the study, 18 (94.7%) showed varying degrees of brain injury on MRI (mild: 12, moderate: 1, severe: 5). Neonates with moderate/severe brain injury had significantly longer durations of ECMO support and extended durations of mechanical ventilation and were more likely to receive continuous renal replacement therapy than those with no or mild injury. Developmental delay was identified in 36.8% of survivors and was significantly associated with prolonged mechanical ventilation, longer neonatal intensive care unit stays, and a higher incidence of seizures.
Conclusion
Brain injury is frequently observed on MRI in neonates treated with ECMO. However, its direct association with adverse neurodevelopmental outcomes is not definitive. Since MRI findings alone cannot predict developmental outcomes, clinical and environmental factors should be integrated into prognostic assessments.
5.Concomitant Rotator Cuff Tear with Frozen Shoulder: A Contemplation on the Necessity and Legitimacy of Magnetic Resonance Imaging Stratified by Age
Hsien-Hao CHANG ; Tae-Hwan YOON ; Joon-Ryul LIM ; Yong-Min CHUN
Clinics in Orthopedic Surgery 2025;17(3):453-459
Background:
Frozen shoulder (FS) is often accompanied by a rotator cuff tear (RCT), but it can be challenging to diagnose a concomitant RCT without imaging studies. Therefore, having practical criteria to identify patients requiring imaging studies at initial presentation with FS would lead to more cost-effective use of these studies. This study investigated the relationship between RCT and stiffness in patients with FS and whether this relationship was modified by patient age.
Methods:
This study included 540 adults with shoulder pain who had ≥ 10° of limited passive range of motion in forward flexion, compared to the contralateral side. Patients were categorized into 2 groups depending on the degree of forward flexion stiffness: overhead stiffness (OHS) group, patients with ≥ 110° forward flexion (n = 349); and non-OHS group, patients with forward flexion < 110° (n = 191). The presence of concomitant RCT was determined by magnetic resonance imaging and compared between groups before and after stratification by age.
Results:
The OHS group had increased odds of concomitant RCT, compared to the non-OHS group (odds ratio [OR], 4.99; 95% CI, 3.36–7.42). OHS was also significantly associated with a more severe grade of RCT (no tear, partial-thickness tear, or full-thickness tear) (OR, 4.42; 95% CI, 3.05–6.39). The odds of RCT in the OHS group, compared to the non-OHS group, increased with age (50–59 years: OR, 3.83; 95% CI, 1.96–7.48; 60–69 years: OR, 5.94; 95% CI, 3.14–11.26; and 70–79 years: OR, 7.67; 95% CI, 2.71–21.66).
Conclusions
Patients with FS and forward flexion range of motion ≥ 110° (i.e., OHS) at initial presentation had approximately 5-fold higher odds of concurrent RCT than patients with non-OHS. Moreover, in patients aged 50 years or above, these odds increased up to almost 8-fold. Therefore, we recommend confirming the rotator cuff integrity with magnetic resonance imaging in patients with FS and OHS.
6.Intraoperative Language Area Mapping:Cortico-Cortical Evoked Potential
Tae-Min CHEON ; Soo-Hyun YOON ; Myoung-Jeong KIM ; Kyung-Min KIM
Brain Tumor Research and Treatment 2025;13(2):39-44
Since the cortico-cortical evoked potential (CCEP) was first introduced in 2004, CCEP monitoring has been utilized in various types of brain surgery to achieve maximal safe resection (MSR). MSR is the primary goal in improving the prognosis of glioma; however, this is particularly challenging when the tumor is located around eloquent areas. Since the complexity of the language network system makes it more difficult to achieve MSR, language area mapping is essential when tumors are located around these areas. Awake surgery has been the gold standard for intraoperative language area mapping.However, awake craniotomy is not always feasible due to various clinical and patient-related factors.CCEP monitoring has emerged as a promising alternative for intraoperative language function assessment under general anesthesia to overcome the limitations of awake surgery. This review aims to summarize the current evidence on CCEP-guided surgery, focusing on its effectiveness in preserving language function.
7.Asparaginase-Associated Pancreatitis and Pancreatic Pseudocyst Managed with Endoscopic Cystogastrostomy in Adult Acute Lymphoblastic Leukemia
Gyewon PARK ; Eun Sun KIM ; Hyuk Soon CHOI ; Bora KEUM ; Yoon Tae JEEN ; Hoon Jai CHUN ; Hong Sik LEE ; Jae Min LEE
Korean Journal of Pancreas and Biliary Tract 2025;30(1):31-35
Anticancer treatment for acute lymphocytic leukemia is based on drugs such as methotrexate, 6-mercaptopurine, vincristine, and asparaginase. Asparaginase-related pancreatitis is known to have an incidence of up to 18%, and is a major cause of discontinuation of anticancer treatment for leukemia due to acute onset and chronic complications. There were various cases of treatment of peripancreatic fluid retention caused by anticancer drugs in leukemia patients. Use of lumen-apposing metal stents (LAMS) for walled-off necrosis (WON) drainage has recently increased. The electrocautery-enhanced delivery system allowed simpler and faster stent placement, streamlining the overall procedure and potentially reducing procedure time. Therefore, favorable outcomes have been reported with the use of LAMS for endoscopic drainage of various conditions. In this paper, we discuss a case in which hot-system LAMS was performed to treat L-asparaginase-induced acute pancreatitis and pancreatic pseudocyst in an adult patient with acute lymphoblastic leukemia.
8.Brain Injury and Short-Term Neurodevelopmental Outcomes in Neonates Treated with Respiratory Extracorporeal Membrane Oxygenation: A Single-Center Experience
Keon Hee SEOL ; Byong Sop LEE ; Kyusang YOO ; Joo Hyung ROH ; Jeong Min LEE ; Jung Il KWAK ; Tae-Gyeong KIM ; Juhee PARK ; Ha Na LEE ; Chae Young KIM ; Soo Hyun KIM ; Ji Yoon JEONG ; Euiseok JUNG
Neonatal Medicine 2025;32(1):39-48
Purpose:
This study aimed to characterize the clinical patterns and severity of brain injury in neonates who survived extracorporeal membrane oxygenation (ECMO) therapy for acute respiratory failure during the neonatal period, to evaluate their short-term neurodevelopmental outcomes, and to identify the factors associated with these outcomes.
Methods:
We retrospectively reviewed the medical records of neonates who survived ECMO between 2018 and 2024. Based on brain magnetic resonance imaging (MRI) findings, the patients were classified into two groups: no/mild and moderate/severe brain injury. Neurodevelopmental outcomes were assessed at 12–40 months of age using the Bayley Scale of Infant Development II/III and/or the Korean Developmental Screening Test.
Results:
Among the 19 neonates included in the study, 18 (94.7%) showed varying degrees of brain injury on MRI (mild: 12, moderate: 1, severe: 5). Neonates with moderate/severe brain injury had significantly longer durations of ECMO support and extended durations of mechanical ventilation and were more likely to receive continuous renal replacement therapy than those with no or mild injury. Developmental delay was identified in 36.8% of survivors and was significantly associated with prolonged mechanical ventilation, longer neonatal intensive care unit stays, and a higher incidence of seizures.
Conclusion
Brain injury is frequently observed on MRI in neonates treated with ECMO. However, its direct association with adverse neurodevelopmental outcomes is not definitive. Since MRI findings alone cannot predict developmental outcomes, clinical and environmental factors should be integrated into prognostic assessments.
9.Asparaginase-Associated Pancreatitis and Pancreatic Pseudocyst Managed with Endoscopic Cystogastrostomy in Adult Acute Lymphoblastic Leukemia
Gyewon PARK ; Eun Sun KIM ; Hyuk Soon CHOI ; Bora KEUM ; Yoon Tae JEEN ; Hoon Jai CHUN ; Hong Sik LEE ; Jae Min LEE
Korean Journal of Pancreas and Biliary Tract 2025;30(1):31-35
Anticancer treatment for acute lymphocytic leukemia is based on drugs such as methotrexate, 6-mercaptopurine, vincristine, and asparaginase. Asparaginase-related pancreatitis is known to have an incidence of up to 18%, and is a major cause of discontinuation of anticancer treatment for leukemia due to acute onset and chronic complications. There were various cases of treatment of peripancreatic fluid retention caused by anticancer drugs in leukemia patients. Use of lumen-apposing metal stents (LAMS) for walled-off necrosis (WON) drainage has recently increased. The electrocautery-enhanced delivery system allowed simpler and faster stent placement, streamlining the overall procedure and potentially reducing procedure time. Therefore, favorable outcomes have been reported with the use of LAMS for endoscopic drainage of various conditions. In this paper, we discuss a case in which hot-system LAMS was performed to treat L-asparaginase-induced acute pancreatitis and pancreatic pseudocyst in an adult patient with acute lymphoblastic leukemia.
10.Brain Injury and Short-Term Neurodevelopmental Outcomes in Neonates Treated with Respiratory Extracorporeal Membrane Oxygenation: A Single-Center Experience
Keon Hee SEOL ; Byong Sop LEE ; Kyusang YOO ; Joo Hyung ROH ; Jeong Min LEE ; Jung Il KWAK ; Tae-Gyeong KIM ; Juhee PARK ; Ha Na LEE ; Chae Young KIM ; Soo Hyun KIM ; Ji Yoon JEONG ; Euiseok JUNG
Neonatal Medicine 2025;32(1):39-48
Purpose:
This study aimed to characterize the clinical patterns and severity of brain injury in neonates who survived extracorporeal membrane oxygenation (ECMO) therapy for acute respiratory failure during the neonatal period, to evaluate their short-term neurodevelopmental outcomes, and to identify the factors associated with these outcomes.
Methods:
We retrospectively reviewed the medical records of neonates who survived ECMO between 2018 and 2024. Based on brain magnetic resonance imaging (MRI) findings, the patients were classified into two groups: no/mild and moderate/severe brain injury. Neurodevelopmental outcomes were assessed at 12–40 months of age using the Bayley Scale of Infant Development II/III and/or the Korean Developmental Screening Test.
Results:
Among the 19 neonates included in the study, 18 (94.7%) showed varying degrees of brain injury on MRI (mild: 12, moderate: 1, severe: 5). Neonates with moderate/severe brain injury had significantly longer durations of ECMO support and extended durations of mechanical ventilation and were more likely to receive continuous renal replacement therapy than those with no or mild injury. Developmental delay was identified in 36.8% of survivors and was significantly associated with prolonged mechanical ventilation, longer neonatal intensive care unit stays, and a higher incidence of seizures.
Conclusion
Brain injury is frequently observed on MRI in neonates treated with ECMO. However, its direct association with adverse neurodevelopmental outcomes is not definitive. Since MRI findings alone cannot predict developmental outcomes, clinical and environmental factors should be integrated into prognostic assessments.

Result Analysis
Print
Save
E-mail