Publications by authors named "Jin-Kyu Kim"

Background: Artificial intelligence (AI) and machine learning (ML) methods are increasingly being applied in pediatric urology across a growing number of settings, with more extensive databases and wider interest for use in clinical practice. More than 30 ML models have been published in the pediatric urology literature, but many lack items required by contemporary reporting frameworks to be high quality. For example, most studies lack multi-institution validation, validation over time, and validation within the clinical environment, resulting in a large discrepancy between the number of models developed versus the number of models deployed in a clinical setting, a phenomenon known as the AI chasm.

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This study aimed to identify the perinatal risk factors of severe acute kidney injury (AKI) occurring after the first week of birth in very low birth weight (VLBW) infants who survived up to the first week. We conducted a single-center, retrospective cohort study on VLBW infants (birth weight, <1,500 g) delivered at <32 weeks of gestational age (GA) from January 2012 to December 2022. We classified AKI based on changes in serum creatinine and urine output based on the modified The Kidney Disease: improving Global Outcomes (KDIGO) neonatal AKI criteria.

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  • Presurgical nasoalveolar molding (PNAM) devices are used to prepare infants with cleft lip for optimal surgical results, and this study focused on analyzing their effectiveness using 3D scanning technology.
  • The research involved 15 patients with unilateral cleft lip and palate, comparing 3D scans of their faces before and after PNAM treatment to measure various nasal and lip features.
  • Results showed significant improvements in several parameters, including increases in the columellar angle and decreases in cleft gap and nostril curvature, indicating that PNAM effectively enhances the surgical outcomes for these patients.
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Introduction: Congenital Anomalies of the Kidney and Urinary Tract (CAKUT) are structural disorders originating prenatally and present at birth. Affecting 4.2 to 1000 per 10,000 births globally, CAKUT includes conditions like posterior urethral valves, cloacal anomalies, and reflux nephropathy.

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Introduction: Initiated in 2009, the U.S. News & World Report (USNWR) pediatric urology rankings aim to guide patients and families towards high-quality urologic care.

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Purpose: This systematic review and meta-analysis aimed to compare the effectiveness and safety of submucosal injection of onabotulinum toxin A (OnabotA) with intradetrusor injection for overactive bladder syndrome (OAB).

Methods: This systematic review is registered with PROSPERO (CRD42021237964). A licensed librarian surveyed Medline, EMBASE, Scopus, and Google Scholar databases to conduct a comprehensive search.

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Severe intraventricular hemorrhage (IVH) in premature infants can lead to serious neurological complications. This retrospective cohort study used the Korean Neonatal Network (KNN) dataset to develop prediction models for severe IVH or early death in very-low-birth-weight infants (VLBWIs) using machine-learning algorithms. The study included VLBWIs registered in the KNN database.

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  • The study evaluates long-term outcomes of ureterovesicostomy (UV) in children with primary obstructive megaureter (POM), focusing on complications like UTIs and the need for reoperation.
  • Out of 183 patients with POM, 47 underwent UV, with a notable 30% developing UTIs and 15% requiring further surgical intervention; however, most showed improvement in hydronephrosis metrics post-surgery.
  • The findings suggest that refluxing UV is a safe and effective alternative to more invasive procedures, allowing for monitoring and selective reconstruction of affected areas.
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Introduction: The morphology of the bladder and posterior urethra on initial voiding cystourethrogram (VCUG) in posterior urethral valve (PUV) has been proposed as a meaningful early metric for short- and long-term kidney outcomes. Here, we seek to externally validate the proposed association and assess the reliability of PUV morphology characteristics.

Materials And Methods: We reviewed our institutional database for patients managed for PUV between 2000 and 2022 and included those treated with primary ablation with at least 1 year of follow-up for kidney function.

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Preterm birth prediction is essential for improving neonatal outcomes. While many machine learning techniques have been applied to predict preterm birth using health records, inflammatory markers, and vaginal microbiome data, the role of prenatal oral microbiome remains unclear. This study aimed to compare oral microbiome compositions between a preterm and a full-term birth group, identify oral microbiome associated with preterm birth, and develop a preterm birth prediction model using machine learning of oral microbiome compositions.

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  • - X-linked recessive ichthyosis (XLI) is a genetic skin condition marked by dark brown, dry skin and polygonal scales, as seen in a 9-month-old infant and several family members.
  • - Genetic analysis identified a significant deletion on chromosome Xp22, affecting the gene associated with XLI, confirmed through multiplex ligation-dependent probe amplification (MLPA).
  • - The study highlights the necessity for advanced genetic screening methods like CNV analysis and MLPA to accurately diagnose individuals suspected of having XLI.
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Transformational leadership is important to the hotel industry where employees play a critical role in delivering the service. Transformational leadership is a leadership style that causes changes in employees by sharing the organization's vision and goals, providing necessary resources, promoting intellectual stimulation, and expecting high performance. This study uses four dimensions of transformational leadership to investigate how the dimensions influence employees' organizational identification, creativity, and task performance.

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Iron deficiency (ID) in very preterm infants born at 28-32 weeks of gestational age (GA) can lower mental and motor test scores. This study aimed to determine whether the rapid growth of very preterm infants might be associated with ID. Among 134 very preterm born between January 2014 and December 2020 at Jeonbuk National University Hospital and discharged home, 93 were included in this study.

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Introduction: Circumcision has been reported to reduce the risk of urinary tract infections (UTIs) in boys with antenatal hydronephrosis (HN). Our aim was to compare the incidence of UTIs in circumcised vs. uncircumcised boys with antenatal HN by conducting a systematic review and meta-analysis.

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  • A study assessed the outcomes of very low birth weight (VLBW) infants to understand how head growth impacts their development, focusing on factors leading to "catch-up" growth.
  • The research involved 253 VLBW infants, categorizing them into a catch-up group with adequate head growth and a no catch-up group with insufficient head growth by 18-24 months of corrected age.
  • Results showed that 81.4% achieved catch-up growth; the no catch-up group had significantly worse health indicators and developmental outcomes, with bronchopulmonary dysplasia (BPD) being a key factor affecting growth.
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Background: Learning health networks (LHN) are consortia of institutions that collaborate and embrace the elements of the learning health system (LHS), including quality improvement, education, research, and stakeholder involvement. Their ultimate goal is rapid information dissemination in clinical care. Pediatric surgical specialties perform unique yet high-impact procedures that could benefit from LHN, thereby improving surgical outcomes and care through LHS approaches.

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