Background: Carvedilol is a beta-adrenergic receptor antagonist primarily metabolized by cytochromes P450 (CYP) 2D6. This study established a carvedilol population pharmacokinetic (PK)–pharmacodynamic (PD) model to describe the effects of CYP2D6 genetic polymorphisms on the inter-individual variability of PK and PD. Methods: The PK–PD model was developed from a clinical study conducted on 21 healthy subjects divided into three CYP2D6 phenotype groups, with six subjects in the extensive metabolizer (EM, *1/*1, *1/*2), seven in the intermediate metabolizer-1 (IM-1, *1/*10, *2/*10), and eight in the intermediate metabolizer-2 (IM-2, *10/*10) groups. The PK–PD model was sequentially developed, and the isoproterenol-induced heart rate changes were used to establish the PD model. A direct effect response and inhibitory E max model were used to develop a carvedilol PK–PD model. Results: The carvedilol PK was well described by a two-compartment model with zeroorder absorption, lag time, and first-order elimination. The carvedilol clearance in the CYP2D6*10/*10 group decreased by 32.8% compared with the other groups. The inhibitory concentration of carvedilol estimated from the final PK–PD model was 16.5 ng/mL regardless of the CYP2D6 phenotype. Conclusion The PK–PD model revealed that the CYP2D6 genetic polymorphisms were contributed to the inter-individual variability of carvedilol PK, but not PD.

This paper describes the design, development, and implementation of a ubiquitous portfolio (u-portfolio) system aimed at enhancing clinical clerkship education at Inje University College of Medicine from 2016 to 2020. This developmental research employed involved a literature review of 69 papers on electronic portfolios (1990–2013), and as well as a series of focus group interviews and surveys with key stakeholders during the iterative design, evaluation, and revision process. The literature analysis revealed three main purposes of e-portfolios (learning, assessment, and showcase) and nine key elements for a multi-purpose e-portfolio (e.g., quality of student reflection, postgraduate continuous learning, and timely and frequent feedback). The system evolved from paper-based portfolios to address the standardization of students’ clerkship experiences across five teaching hospitals, incorporating competency-based education and enabling efficient data management to promote student learning, assessment, and feedback. Key challenges in transitioning from paper to electronic portfolios included infrastructure issues, user adaptation, and assessment standardization. The resulting u-portfolio system, which allowed the seamless integration of mobile devices, emphasized five core functions: enhanced real-time feedback, transparent evaluation with rubrics, improved reflection quality, real-time assessment and tracking, and mapping between learning and competency achievements. Initially implemented in the internal medicine clerkship in 2016, the system was gradually expanded to all core clerkships by 2018. The success of this system led to its adoption by 19 medical schools through a consortium organized by the Korea Association of Medical Colleges, with 31 schools now collaborating to enhance clerkships through the u-portfolio system.

This paper describes the design, development, and implementation of a ubiquitous portfolio (u-portfolio) system aimed at enhancing clinical clerkship education at Inje University College of Medicine from 2016 to 2020. This developmental research employed involved a literature review of 69 papers on electronic portfolios (1990–2013), and as well as a series of focus group interviews and surveys with key stakeholders during the iterative design, evaluation, and revision process. The literature analysis revealed three main purposes of e-portfolios (learning, assessment, and showcase) and nine key elements for a multi-purpose e-portfolio (e.g., quality of student reflection, postgraduate continuous learning, and timely and frequent feedback). The system evolved from paper-based portfolios to address the standardization of students’ clerkship experiences across five teaching hospitals, incorporating competency-based education and enabling efficient data management to promote student learning, assessment, and feedback. Key challenges in transitioning from paper to electronic portfolios included infrastructure issues, user adaptation, and assessment standardization. The resulting u-portfolio system, which allowed the seamless integration of mobile devices, emphasized five core functions: enhanced real-time feedback, transparent evaluation with rubrics, improved reflection quality, real-time assessment and tracking, and mapping between learning and competency achievements. Initially implemented in the internal medicine clerkship in 2016, the system was gradually expanded to all core clerkships by 2018. The success of this system led to its adoption by 19 medical schools through a consortium organized by the Korea Association of Medical Colleges, with 31 schools now collaborating to enhance clerkships through the u-portfolio system.

This paper describes the design, development, and implementation of a ubiquitous portfolio (u-portfolio) system aimed at enhancing clinical clerkship education at Inje University College of Medicine from 2016 to 2020. This developmental research employed involved a literature review of 69 papers on electronic portfolios (1990–2013), and as well as a series of focus group interviews and surveys with key stakeholders during the iterative design, evaluation, and revision process. The literature analysis revealed three main purposes of e-portfolios (learning, assessment, and showcase) and nine key elements for a multi-purpose e-portfolio (e.g., quality of student reflection, postgraduate continuous learning, and timely and frequent feedback). The system evolved from paper-based portfolios to address the standardization of students’ clerkship experiences across five teaching hospitals, incorporating competency-based education and enabling efficient data management to promote student learning, assessment, and feedback. Key challenges in transitioning from paper to electronic portfolios included infrastructure issues, user adaptation, and assessment standardization. The resulting u-portfolio system, which allowed the seamless integration of mobile devices, emphasized five core functions: enhanced real-time feedback, transparent evaluation with rubrics, improved reflection quality, real-time assessment and tracking, and mapping between learning and competency achievements. Initially implemented in the internal medicine clerkship in 2016, the system was gradually expanded to all core clerkships by 2018. The success of this system led to its adoption by 19 medical schools through a consortium organized by the Korea Association of Medical Colleges, with 31 schools now collaborating to enhance clerkships through the u-portfolio system.

This paper describes the design, development, and implementation of a ubiquitous portfolio (u-portfolio) system aimed at enhancing clinical clerkship education at Inje University College of Medicine from 2016 to 2020. This developmental research employed involved a literature review of 69 papers on electronic portfolios (1990–2013), and as well as a series of focus group interviews and surveys with key stakeholders during the iterative design, evaluation, and revision process. The literature analysis revealed three main purposes of e-portfolios (learning, assessment, and showcase) and nine key elements for a multi-purpose e-portfolio (e.g., quality of student reflection, postgraduate continuous learning, and timely and frequent feedback). The system evolved from paper-based portfolios to address the standardization of students’ clerkship experiences across five teaching hospitals, incorporating competency-based education and enabling efficient data management to promote student learning, assessment, and feedback. Key challenges in transitioning from paper to electronic portfolios included infrastructure issues, user adaptation, and assessment standardization. The resulting u-portfolio system, which allowed the seamless integration of mobile devices, emphasized five core functions: enhanced real-time feedback, transparent evaluation with rubrics, improved reflection quality, real-time assessment and tracking, and mapping between learning and competency achievements. Initially implemented in the internal medicine clerkship in 2016, the system was gradually expanded to all core clerkships by 2018. The success of this system led to its adoption by 19 medical schools through a consortium organized by the Korea Association of Medical Colleges, with 31 schools now collaborating to enhance clerkships through the u-portfolio system.

This paper describes the design, development, and implementation of a ubiquitous portfolio (u-portfolio) system aimed at enhancing clinical clerkship education at Inje University College of Medicine from 2016 to 2020. This developmental research employed involved a literature review of 69 papers on electronic portfolios (1990–2013), and as well as a series of focus group interviews and surveys with key stakeholders during the iterative design, evaluation, and revision process. The literature analysis revealed three main purposes of e-portfolios (learning, assessment, and showcase) and nine key elements for a multi-purpose e-portfolio (e.g., quality of student reflection, postgraduate continuous learning, and timely and frequent feedback). The system evolved from paper-based portfolios to address the standardization of students’ clerkship experiences across five teaching hospitals, incorporating competency-based education and enabling efficient data management to promote student learning, assessment, and feedback. Key challenges in transitioning from paper to electronic portfolios included infrastructure issues, user adaptation, and assessment standardization. The resulting u-portfolio system, which allowed the seamless integration of mobile devices, emphasized five core functions: enhanced real-time feedback, transparent evaluation with rubrics, improved reflection quality, real-time assessment and tracking, and mapping between learning and competency achievements. Initially implemented in the internal medicine clerkship in 2016, the system was gradually expanded to all core clerkships by 2018. The success of this system led to its adoption by 19 medical schools through a consortium organized by the Korea Association of Medical Colleges, with 31 schools now collaborating to enhance clerkships through the u-portfolio system.

A group of patients with Kawasaki disease (KD) initially present with cervical lymphadenitis or deep neck infection. These unusual KD presentations lead to unnecessary antibiotic therapy or surgical intervention, thereby delaying intravenous immunoglobulin treatment and increasing the risk of coronary artery damage. We present four KD patients whose initial presentations mimicked a retropharyngeal abscess. Nonsuppurative cervical lymphadenitis or suspected neck abscess unresponsive to intravenous antibiotics could signal the possibility of KD.
Abscess ; Anti-Bacterial Agents ; Coronary Vessels ; Humans ; Immunoglobulins ; Lymphadenitis ; Mucocutaneous Lymph Node Syndrome ; Neck ; Retropharyngeal Abscess

Foreign body aspiration (FBA) is a common accident in young children. Undiagnosed and retained foreign bodies may result in severe early and late complications such as asphyxia, pneumonia, atelectasis and bronchiectasis. Moreover, because it can mimic bronchiolitis, croup or asthma, an accurate history and a high index of suspicion are of paramount importance for early diagnosis. With our experience on bronchial FBA initially misdiagnosed as acute bronchiolitis, we emphasize that a minute radiological finding should not be neglected and a repeat chest radiograph may be helpful when the initial study shows normal findings. Multidetector computed tomography is a very useful noninvasive diagnostic modality for FBA.
Asphyxia ; Asthma ; Bronchi ; Bronchiectasis ; Bronchiolitis ; Child ; Croup ; Early Diagnosis ; Foreign Bodies* ; Humans ; Multidetector Computed Tomography ; Pneumonia ; Pulmonary Atelectasis ; Radiography, Thoracic

PURPOSE: We undertook this study to investigate discrepancies in C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) values, and variations following intravenous immunoglobulin (IVIG) therapy in Kawasaki disease (KD). METHODS: A total of 123 KD patients were retrospectively enrolled. Patients were treated with IVIG 2 g/kg at 2 to 9 days after disease onset. We obtained white blood cell (WBC) count, percentage of neutrophils (% neutrophils), CRP, ESR, and N-terminal pro-brain natriuretic peptide (NT-proBNP) values before and 48 to 72 hours after IVIG treatment. Discrepancy was defined as CRP ≥10 mg/dL and ESR <50 mm/hr (Group 1), or CRP <10 mg/dL and ESR ≥50 mm/hr (Group 2). RESULTS: Thirty-six of 123 subjects (29.2%) had a discrepancy: 25 (20.3%) in Group 1 and 11 (8.9%) in Group 2. In Group 1, 15 patients (60%) had fever for <5 days (early presenter) and 10 (40%) had fever for ≥5 days (late presenter). There were six early presenters (55%) and five late presenters (45%) in Group 2. Late presenters had higher ESR than early presenters (34.3±21.0 mm/hr vs. 26.3±19.3 mm/hr, P=0.029). After IVIG treatment, elevated WBC count, % neutrophils, CRP, and NT-proBNP levels normalized. In contrast, ESR increased from 37.4±21.9 mm/hr to 48.0±22.7 mm/hr (n=36, P=0.051). CONCLUSIONS: A discrepancy may be related to the duration of fever. Due to discrepancies in CRP and ESR values in acute KD, both should be measured to assess the degree of inflammatory activity before IVIG treatment. After IVIG treatment, the ESR should not be used as a marker of response to therapy in KD.
Blood Sedimentation* ; C-Reactive Protein* ; Erythrocytes* ; Fever ; Humans ; Immunization, Passive* ; Immunoglobulins* ; Immunoglobulins, Intravenous ; Leukocytes ; Mucocutaneous Lymph Node Syndrome* ; Neutrophils ; Retrospective Studies

Kawasaki disease (KD) is the self-limited and multisystem vasculitis which accompanies many complications. Ophthalmic findings in KD are bilateral conjunctival injection, iridocyclitis, superficial keratitis, vitreous opacities and subconjunctival hemorrhage. Optic disc swelling is a rare ophthalmic complication in KD. We describe a 3-year-old boy who presented with 7 days of fever, both conjunctival injection without discharge, and right cervical lymph node enlargement of more than 1.5 cm. He was diagnosed as incomplete KD. He had no ocular symptom except bilateral conjunctival injection. On ophthalmic examination, he was diagnosed by anterior uveitis with optic disc swelling. The brain magnetic resonance imaging was performed and revealed no evidence of increased intracranial pressure. Echocardiography revealed the dilated right coronary artery up to 3.4 mm. Fever subsided and optic disc swelling was completely improved after intravenous immunoglobulin (2 g/kg) treatment. Optic disc swelling is a rare ophthalmic complication in KD.
Brain ; Child, Preschool ; Coronary Vessels ; Echocardiography ; Fever ; Hemorrhage ; Humans ; Immunoglobulins ; Intracranial Pressure ; Iridocyclitis ; Keratitis ; Lymph Nodes ; Magnetic Resonance Imaging ; Male ; Mucocutaneous Lymph Node Syndrome* ; Papilledema ; Uveitis* ; Uveitis, Anterior ; Vasculitis