Publications by authors named "Kusaka Y"

Objectives: We examined shifts in labor productivity and their economic ramifications among adult patients with long COVID in Japan.

Methods: A total of 396 patients were categorized into three groups based on symptom progression: non-long COVID, long COVID recovered, and long COVID persistent. Patient-reported outcomes were assessed at three time intervals: 3, 6, and 12 months after COVID-19 diagnosis.

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Purpose: Currently, laparoscopic surgery is a standard technique in the field of abdominal surgery. However, the most adequate fluid regimen during laparoscopic surgery remains unclear. The aim of this trial is to compare a restricted fluid therapy with a liberal fluid therapy for laparoscopic abdominal surgery.

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  • The study investigates the relationship between amenamevir, a new anti-herpesvirus drug, and the risk of encephalopathy, a potential complication during herpes zoster treatment.
  • Using data from the Japanese Adverse Drug Event Report (JADER) database, the researchers identified 246 patients treated with amenamevir and found a significant association between the drug and encephalopathy, with older age being a key risk factor.
  • The findings highlight the need for healthcare providers to monitor elderly patients (especially those aged 70 and above) closely for signs of encephalopathy when prescribing amenamevir.
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Diaphragmatic hernia is a congenital malformation, often discovered in the neonatal period, and its occurrence in adults is very rare. This patient, who was completely asymptomatic until the age of 62, had developed an intestinal obstruction and went into respiratory failure after surgery for an external auditory canal carcinoma. He was subsequently diagnosed with a late-presenting congenital diaphragmatic hernia (CDH), thus requiring surgical treatment.

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This case study presents a rare occurrence of acute respiratory failure in a 17-year-old male diagnosed with common variable immunodeficiency (CVID) and granulomatous lymphocytic interstitial lung disease (GLILD), which typically have a gradual onset. The patient initially exhibited nonspecific symptoms such as dry cough and fever but quickly progressed to severe respiratory failure despite conventional treatments. Imaging showed extensive lung abnormalities, and blood tests revealed significantly low immunoglobulin levels, indicating an underlying immunodeficiency.

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In our previous study setting, climatotherapy programme consisted of six sessions - four in the mid-mountain area and two in a flat park. For all sessions, the subjects underwent climatotherapy in the morning under slightly cool conditions. During each session, the subjects' blood pressure, pulse rate, skin temperature, blood lactate, salivary cortisol and mood profile were recorded, and meteorological data were collected at the sites.

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An accelerated climatotherapy programme was evaluated for use with busy people in mid-mountain and flat lowland areas. A total of 43 urban residents participated in this climatotherapy programme. Participants' blood pressure, pulse rate, peripheral skin temperature and levels of salivary amylase, salivary cortisol and blood lactate were measured, and they completed the Profile of Mood Status questionnaire.

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  • * A study involving hospitalized COVID-19 patients revealed asthma, younger age, and female sex as specific risk factors for persistent fatigue over time, with asthma being particularly significant.
  • * The findings suggest that asthma may heighten the risk for long-lasting fatigue after COVID-19, highlighting the need for targeted preventive measures to reduce fatigue and its associated impacts.
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  • * Data from 1200 enrolled patients showed a decline in symptoms over time, from 93.9% during hospitalization to 33.0% at 12 months, with those experience long COVID symptoms reporting lower quality of life and higher anxiety and depression.
  • * Identified risk factors for long COVID included being female, middle-aged, requiring oxygen, and being in critical condition during hospitalization, providing valuable insights for future research in Japan.
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This study examined physicians' participation and performance in the examinations administered by the Asian Intensive Reader of Pneumoconiosis (AIR Pneumo) program from 2008 to 2020 and compared radiograph readings of physicians who passed with those who failed the examinations. Demography of the participants, participation trends, pass/fail rates, and proficiency scores were summarized; differences in reading the radiographs for pneumoconiosis of physicians who passed the examinations and those who failed were evaluated. By December 2020, 555 physicians from 20 countries had taken certification examinations; the number of participants increased in recent years.

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Objectives: The aim of the article is to investigate the associations of disease duration and anti-cyclic citrullinated peptide antibody (ACPA) status with the effectiveness of abatacept in biologic-naïve patients with rheumatoid arthritis (RA).

Methods: We performed post hoc analyses of the Orencia® Registry in Geographically Assembled Multicenter Investigation (ORIGAMI) study of biologic-naïve RA patients aged ≥20 years with moderate disease activity who were prescribed abatacept. Changes in the Simplified Disease Activity Index (SDAI) and Japanese Health Assessment Questionnaire (J-HAQ) at 4, 24, and 52 weeks of treatment were analysed in patients divided according to ACPA serostatus (positive/negative), disease duration (<1/≥1 year), or both.

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  • A study analyzed the rates and impact of respiratory bacterial infections in Japanese patients hospitalized with COVID-19, finding that 7.5% of patients experienced such infections.
  • The most common causes of these infections included Staphylococcus aureus, Klebsiella pneumoniae, and Streptococcus pneumoniae, with more severe outcomes linked to hospital-acquired infections and pre-existing health conditions.
  • The research highlights the importance of monitoring and assessing bacterial complications in COVID-19 patients, as these infections can significantly increase mortality rates.
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Early intervention for dementia patients is extremely important for the prevention of dementia. However, so far, it is not clear as to what kind of screening will be useful for the early detection of dementia. We aimed to investigate the relationship between the results of a short self-reporting yes/no survey selected in Kihon Checklist, developed by the Japanese Ministry of Health, Labor and Welfare to identify older adults who are at risk of requiring support/care, and other original items developed by Dementia Prevention Team, Fukui, Japan, and Mini-Mental State Examination (MMSE) scores, and determine the diagnostic efficacy of the self-reporting yes/no survey.

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  • The study examined the impact of non-respiratory bacterial and fungal infections on hospitalized COVID-19 patients, focusing on the types of infections, their causative organisms, and their effects on mortality rates.
  • Out of 1914 patients, 4.2% developed non-respiratory bacterial infections, predominantly bacteremia, which was linked to a higher risk of death, particularly in patients with certain predisposing factors.
  • The findings highlight the need for effective medical strategies to manage secondary infections in COVID-19 patients, especially those at a greater risk, such as older individuals and those admitted to intensive care.
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Community-acquired pneumonia (CAP) caused by in healthy adults can rapidly lead to severe outcomes. We treated a case of -induced CAP and concurrent severe coronavirus disease (COVID-19) in a healthy 39-year-old man without other serious risk factors for severe illness except smoking. Immediately after admission, the patient developed sepsis and received intensive broad-spectrum antibacterial therapy with meropenem and vancomycin, veno-arterial extracorporeal membrane oxygenation (VAECMO), and catecholamine supplementation.

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Background: Oxygen therapy after extubation in the intensive care unit (ICU) is essential in order to maintain adequate oxygenation, especially in patients who have undertaken cardiovascular surgery. A Venturi mask (VM) has been routinely used as an oxygen therapy in the ICU. Recently, however, the high flow nasal cannula (HFNC) has become available, and this device can deliver up to 60 L/min of humidified oxygen.

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  • The study investigates the use of Raman spectroscopy with 633 nm and 785 nm excitation light to detect eosinophil accumulation in live esophageal tissue, finding weak signals from hemoglobin with 785 nm but strong resonance effects from eosinophil peroxidase (EPO) with 633 nm.
  • A specific optical probe called BHRP, featuring a sapphire ball lens, was utilized for measuring the Raman spectra of eosinophils in mouse tissue, indicating enhanced detection capabilities.
  • Principal component analysis (PCA) successfully differentiated eosinophils from other blood cells in the spectral data, demonstrating the effectiveness of 785 nm Raman spectroscopy for diagnosing eosinophilic esoph
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  • * Researchers analyzed RNA-seq data from 465 blood samples, uncovering 1169 expression quantitative trait loci (eQTLs) and 1549 splice QTLs (sQTLs) linked to COVID-19 severity, including immune-related expressions.
  • * The study highlights the impact of disease severity on gene expression, identifying specific eQTLs that interact with COVID-19 phenotypes, and provides an extensive resource for understanding gene regulation in response to the virus.
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  • Researchers conducted a genome-wide association study (GWAS) with 2,393 COVID-19 patients and 3,289 controls in Japan, identifying a specific genetic variant (rs60200309-A) on chromosome 5 linked to severe cases in individuals under 65.
  • The variant is more common in East Asians and associated with reduced expression of the DOCK2 gene, which was found to be lower in severe COVID-19 cases, particularly in non-classical monocytes.
  • Additionally, inhibiting DOCK2 in hamsters worsened pneumonia symptoms, indicating its potential as a biomarker and therapeutic target for severe COVID-19.
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Aim: Prone positioning of coronavirus disease 2019 (COVID-19) patients could improve oxygenation. However, clinical data on prone positioning of intubated COVID-19 patients are limited. We investigated trends of PaO / FiO ratio values in patients during prone positioning to identify a predictive factor for early detection of patients requiring advanced therapeutic intervention such as extracorporeal membrane oxygenation (ECMO).

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We propose a rational electrode design concept for affinity biosensors based on electrochemical impedance spectroscopy to substantially suppress unexpected device-to-device variations. On the basis that the uniformity of the current distribution affects the variation, a novel micro-gap parallel plate electrode (PPE) was developed, where two planar electrodes with edges covered with a SiO layer were placed face to face. The structure provides a uniform current distribution over the planar electrode surface and maximizes the contribution of the planar electrode surface to sensing.

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Background: The bacterial derived flavin adenine dinucleotide (FAD)-dependent glucose dehydrogenase (FADGDH) is the most promising enzyme for the third-generation principle-based enzyme sensor for continuous glucose monitoring (CGM). Due to the ability of the enzyme to transfer electrons directly to the electrode, recognized as direct electron transfer (DET)-type FADGDH, although no investigation has been reported about DET-type FADGDH employed on a miniaturized integrated electrode.

Methods: The miniaturized integrated electrode was formed by sputtering gold (Au) onto a flexible film with 0.

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  • The text discusses the significant impact of COVID-19, detailing both immediate deaths and long-term health issues that can affect patients' quality of life and socioeconomic status.
  • It outlines a study involving a nationwide survey of 1,000 COVID-19 patients in Japan to assess health-related quality of life (HRQoL), long-term complications, and risk factors associated with the disease's sequelae.
  • The research aims to provide comprehensive evidence on the multifaceted consequences of COVID-19, approved by an ethics committee, with plans for dissemination through academic channels.
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This study examined inter-observer agreement and diagnostic accuracy in classifying radiographs for pneumoconiosis among Asian physicians taking the AIR Pneumo examination. We compared agreement and diagnostic accuracy for parenchymal and pleural lesions across residing countries, specialty training, and work experience using data on 93 physicians. Physicians demonstrated fair to good agreement with kappa values 0.

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Changes in technologies and markets are issues for all global companies. Japanese companies also face difficulties in eras of change. There is a need for paradigm shifts in management style.

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