Publications by authors named "Toshihiko Takada"

Background: Detailed grading of chills is more useful for diagnosing bacteremia than simply classifying the presence or absence of chills. However, its value added to other clinical information has not been evaluated.

Objective: To evaluate the value of adding chills grading to other clinical information compared to simply noting the presence or absence of chills for predicting bacteremia in patients with suspected infection.

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Background: Time-at-bedside plays a central role in clinical medicine. However, the amount of time Japanese clinical residents spend at patients' bedsides remains unexplored.

Objective: To quantify time-at-bedside and examine its association with in-training examination scores during clinical residency in Japan.

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Background: Mentorship is a dynamic reciprocal relationship, wherein a novice (mentee) grows with the encouragement of an advanced careerist (mentor). It is widely implemented in medical training programs. However, there are few reports on mentorship's educational effects in the Japanese context.

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It is crucial to identify high-risk patients with infectious conditions for appropriate management. We previously found that inflammatory markers added value to vital signs for predicting mortality in patients with suspected infection. In this study, the aim was to externally validate the added value of the inflammatory markers and to develop a new prediction model.

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Background:  About 7% of patients with cancer-associated venous thromboembolism (CAT) develop a recurrence during anticoagulant treatment. Identification of high-risk patients may help guide treatment decisions.

Aim:  To identify clinical predictors and develop a prediction model for on-treatment recurrent CAT.

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Introduction: Culinary interventions (cooking classes) are a potential educational tool for salt reduction in the home diet, but their content has never been reported in detail. This study aimed to develop a cooking class for salt reduction, describe its rationale and structure so that other parties could replicate it, and preliminarily assess its impact on salt intake.

Methods: A multidisciplinary research team developed a cooking class package to reduce salt content in the Japanese home diet.

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Background/aim: A cutoff value for lymph node diameter in colorectal cancer lymph node metastases has not been established. This prospective study aimed to investigate the direct association between swollen lymph nodes identified on preoperative computed tomography (CT) and pathological findings and proposed a cutoff value.

Patients And Methods: We enrolled patients scheduled to undergo curative surgery with lymph node dissection for colorectal adenocarcinoma who underwent preoperative contrast-enhanced CT and had swollen lymph nodes ≥7 mm in diameter.

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Background: Meningitis, especially of bacterial origin, is a medical emergency that must be diagnosed promptly. However, due to the associated risks of complications of lumbar puncture, it is crucial to identify individuals who truly need it. The aim of this study was to assess the diagnostic role of inflammatory markers in distinguishing among patients without meningitis, those with aseptic meningitis, and those with bacterial meningitis.

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Article Synopsis
  • Mentorship involves a relationship where experienced individuals (mentors) support the personal and professional growth of less experienced individuals (mentees), and it may help prevent mental health issues in medical residents at risk for burnout.
  • A study of 4,929 postgraduate medical residents in Japan found that 66.3% had at least one mentor, and those with mentors had a lower likelihood of depressive symptoms according to a screening tool (PHQ-2).
  • The results suggest that having a mentor, especially a formal one, is linked to better mental health among residents, indicating a need for further investigation into the mentorship quality in Japanese clinical residency programs.
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Objectives: In older patients, the diagnosis of acute pyelonephritis (APN) is challenging. The aim was to evaluate the added value of CT to history, physical examination and urinalysis for the diagnosis of APN in older patients with suspected infection with an unknown focus.

Design: Retrospective diagnostic study.

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The viability of probiotics in the human gastrointestinal tract is important, as some reports indicate that the health benefits of live bacteria are greater than those of dead ones. Therefore, the higher the viability of the probiotic strain, the better it may be. However, probiotic strains lose their viability due to gastrointestinal stress such as gastric acid and bile.

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Introduction: Intravenous antibiotics are the primary treatment of choice for pyogenic vertebral osteomyelitis (PVO). Surgical intervention is required when the initial antibiotic treatment fails but is often difficult to perform, especially in older adults with multiple comorbidities, because of the reduced physical activity. The size of the infection signal in the spinal bone on magnetic resonance imaging (MRI) at the time of diagnosis was reported to have a high predictive accuracy for antibiotic treatment failure.

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Background: A previous individual participant data meta-analysis (IPD-MA) of antibiotics for adults with clinically diagnosed acute rhinosinusitis (ARS) showed a marginal overall effect of antibiotics, but was unable to identify patients that are most likely to benefit from antibiotics when applying conventional (i.e. univariable or one-variable-at-a-time) subgroup analysis.

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Article Synopsis
  • * Researchers conducted a detailed meta-analysis involving 28,305 adult patients across various healthcare settings and developed a logistic regression model incorporating ten key predictors like age, sex, and previous medical history.
  • * The final model demonstrated high accuracy with a c-statistic of 0.87, showing it was more effective than existing algorithms (like the Wells score), although it slightly overestimated low probability cases.
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Background: Low-value care is healthcare leading to no or little clinical benefit for the patient. The best (combinations of) interventions to reduce low-value care are unclear.

Purpose: To provide an overview of randomized controlled trials (RCTs) evaluating deimplementation strategies, to quantify the effectiveness and describe different combinations of strategies.

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Objectives: We present an illustrative application of methods that account for covariates in receiver operating characteristic (ROC) curve analysis, using individual patient data on D-dimer testing for excluding pulmonary embolism.

Study Design And Setting: Bayesian nonparametric covariate-specific ROC curves were constructed to examine the performance/positivity thresholds in covariate subgroups. Standard ROC curves were constructed.

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Background: In patients clinically suspected of having pulmonary embolism (PE), physicians often rely on intuitive estimation ("gestalt") of PE presence. Although shown to be predictive, gestalt is criticized for its assumed variation across physicians and lack of standardization.

Objectives: To assess the diagnostic accuracy of gestalt in the diagnosis of PE and gain insight into its possible variation.

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Article Synopsis
  • Bile acid resistance is essential for probiotics like Lacticaseibacillus paracasei strain Shirota (LcS) to survive in the gut and support health benefits.
  • The researchers created 4649 genetically modified lines to find which genes are important for bile acid resistance and discovered 10 key genes involved.
  • Notably, disruptions in the cardiolipin synthase (cls) genes resulted in significant growth inhibition, indicating that maintaining cardiolipin levels is critical for the bacteria's bile acid resistance mechanisms.
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Context: Approximately 10% to 20% of patients with Kawasaki disease (KD) are refractory to initial intravenous immunoglobulin (IVIG) therapy. KD is mainly associated with coronary artery abnormalities.

Objectives: To identify and evaluate all developed prediction models for IVIG resistance in patients with KD and synthesize evidence from external validation studies that evaluated their predictive performances.

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Objectives: We evaluated the presence and frequency of spin practices and poor reporting standards in studies that developed and/or validated clinical prediction models using supervised machine learning techniques.

Study Design And Setting: We systematically searched PubMed from 01/2018 to 12/2019 to identify diagnostic and prognostic prediction model studies using supervised machine learning. No restrictions were placed on data source, outcome, or clinical specialty.

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Background And Objectives: We sought to summarize the study design, modelling strategies, and performance measures reported in studies on clinical prediction models developed using machine learning techniques.

Methods: We search PubMed for articles published between 01/01/2018 and 31/12/2019, describing the development or the development with external validation of a multivariable prediction model using any supervised machine learning technique. No restrictions were made based on study design, data source, or predicted patient-related health outcomes.

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Case Presentation: A 75-year-old man with a history of asbestosis presented to the emergency department with sudden-onset dyspnea and hemoptysis, triggered by coughing. The patient was hemodynamically unstable and in respiratory distress. Computed tomography revealed a massive hemothorax on the left side and compression of the descending thoracic aorta.

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Background: Due to potentially fatal consequences of missed bacteremia, blood cultures are often overused. While there are several prediction models that can be used to identify patients who truly need blood cultures, physicians often rely on their gestalt. We evaluated the diagnostic performance of physician gestalt for bacteremia in comparison with 2 existing prediction models: Takeshima and Shapiro.

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Background & Aims: Aspiration pneumonia (AP) is a public health concern among older adults. Previous studies have reported the association between oral intake initiation within 48 h after hospital admission and better in-hospital outcomes among patients with AP. We investigated the association between initiation of oral intake within 24 h and in-hospital outcomes of older patients with AP undergoing dysphagia rehabilitation.

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Objective: To externally validate various prognostic models and scoring rules for predicting short term mortality in patients admitted to hospital for covid-19.

Design: Two stage individual participant data meta-analysis.

Setting: Secondary and tertiary care.

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