Updated on 2026/04/30

写真a

 
ISHIKAWA TAKEMASA
 
Organization
Graduate School of Nursing Department of Nursing Lecturer
School of Nursing Department of Nursing
Title
Lecturer
Affiliation
Institute of Nursing

Position

  • Graduate School of Nursing Department of Nursing 

    Lecturer  2026.04 - Now

  • School of Nursing Department of Nursing 

    Lecturer  2026.04 - Now

Degree

  • 博士(保健学) ( Osaka University )

Research Areas

  • Life Science / Gerontological nursing and community health nursing  / 在宅看護

  • Life Science / Hygiene and public health (non-laboratory)

  • Life Science / Fundamental of nursing  / Intractable illness nursing

Research Interests

  • 難病看護

  • Amytrophic Lateral Sclerosis

  • 神経難病

  • Nursing

  • Augmentative and Alternative Communication

  • 在宅看護

  • Rehabilitation

  • AAC

Professional Memberships

  • Japan Society of Nursing Research

    2023.05 - Now

  • The Japan Academy of Home Care

    2022.06 - Now

  • The Japanese Society of Medical Networking for Intractable Diseases

    2017.08 - Now

  • JAPAN INTRACTABLE ILLNESS NURSING SOCIETY

Job Career (off-campus)

  • Osaka Metropolitan University

    2026.04 - Now

  • 大阪大学大学院医学系研究科   招聘研究員

    2025.04 - Now

  • Tekix co   Nana-r Home-visit Agency Development Center   Manager of center

    2022.11 - Now

  • Tekix co.   Nana-r home-visit nursing agency   Nurse

    2020.04 - Now

Papers

  • Using the Technology Acceptance Model (TAM) to investigate factors influencing Information and Communication Technology (ICT) usage in interprofessional collaboration among home-visiting nurses Reviewed

    in press   2026.09

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    Publishing type:Research paper (scientific journal)  

  • Intelligent flexibility in an aging society: lessons from Japan's home-visit nursing system Reviewed

    Takemasa Ishikawa, Haruka Imura, Yoshiyuki Takashima

    Frontiers in Public Health   14 ( 1755718 )   1755718   2026.02( ISSN:2296-2565

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)  

    DOI: 10.3389/fpubh.2026.1755718

    PubMed

  • Demographic Moderation of Healthcare Expenditure Associated With Home‐Based Deaths: A Longitudinal Ecological Study in Japanese Municipalities, 2015–2022 Reviewed

    Takemasa Ishikawa, Yoshiyuki Takashima

    The International Journal of Health Planning and Management   41 ( 1 )   82 - 93   2026.01( ISSN:07496753

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    Introduction
    Home-based end-of-life care has gained policy attention in Japan. However, its fiscal consequences remain unclear. Rising healthcare costs and rapid population ageing heighten the policy relevance of such evidence.

    Objectives
    To assess how the municipal home-based death rate relates to per capita medical and long-term care insurance (LTCI) spending, and whether ageing modifies these associations.

    Methods
    We analysed panel data from 1741 municipalities (2015–2022). Outcomes were log-transformed total and inpatient medical spending per resident and LTCI spending per certified individual. The exposure was the one-year-lagged home-based death rate, defined as home deaths divided by all deaths. Fixed-effects regressions controlled for year, ageing rate, population density (per km2 of habitable land), income-tax revenue, and health and long-term care resources. Cluster-robust standard errors addressed within-municipality serial correlation. All analyses were conducted in Python 3.11 using the linearmodels package.

    Results
    The mean home-based death rate was 12.3% (SD = 5.72). Each one-percentage-point increase predicted 0.001 (95% CI: 1.178 × 10^−4–0.0018) and 0.001 (95% CI: 1.900 × 10^10–0.001) log-point increases in total and inpatient spending, with no association for LTCI. Ageing moderated this relationship: at approximately 39.5% ageing, higher home-based death rates predicted lower medical costs. Greater population density (total only) and lower taxable income were also associated with higher medical spending.

    Conclusion
    The fiscal impact of home-based deaths is context dependent. In more aged municipalities, promoting home dying may yield medical savings, whereas younger areas may face short-term cost growth. Distinct cost dynamics between medical and LTCI systems warrant locally tailored end-of-life policies.

    DOI: 10.1002/hpm.70031

    PubMed

  • ICT Tool for Multidisciplinary Collaboration for Reducing All-Cause Mortality in Older Patients with Heart Failure and Multimorbidity: A Retrospective Cohort Study

    Yuichiro Saizen, Tomoaki Higo, Misaki Kasamatsu, Misaki Fujii, Mizuki Katsuhisa, Yuko Takeshita, Mai Onishi, Kumiko Katsuma, Ryoko Sekiguchi, Yuka Fukata, Takemasa Ishikawa, Yasuha Otsuka, Eriko Koujiya, Miyae Yamakawa, Yasushi Takeya

    Aging Medicine and Healthcare   16 ( 4 )   370 - 376   2025.12( ISSN:2663-8851

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.33879/amh.164.2024.06056

  • Trends in the Structural Characteristics of Healthcare and Long-Term Care Resources and Expenditures in Depopulated Areas: A Two-Way Fixed-Effects Analysis of Nationwide Municipal Data in Japan, 2015–2022 Reviewed

    Trends in the, structural characteristics of healthcare, long-term care resources and expenditures in, depopulated areas A two-way, fixed-effects analysis of, nationwide municipal, data in Ja

    11 ( 2 )   235 - 242   2025.12

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   International / domestic magazine:Domestic journal  

    DOI: 10.69287/ppseb.11.2_235

  • Association Between Long-Term Care Insurance Certification and Early Home-Visit Nursing Frequency in Older Patients With Heart Failure in Japan Reviewed

    Takemasa Ishikawa

    Home Health Care Management & Practice   2025.11( ISSN:1084-8223 ( eISSN:1552-6739

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)  

    Home-visit nursing can reduce early readmissions and improve quality of life in older patients with heart failure (HF). In Japan, allocation of home-visit nursing often depends on Long-Term Care Insurance (LTCI) certification, which is determined primarily by functional status within budgets. This study examined whether LTCI certification is associated with the frequency of early home-visit nursing. We retrospectively analyzed 88 patients with HF who initiated home-visit nursing at a single agency between 2014 and 2024. The outcome was the number of visits within the initial 2 weeks comparing patients with and without LTCI. Negative binomial regression estimated incidence rate ratios (IRR), adjusting for age, sex, activities of daily living (ADL), physician-issued special direction, and eligibility under Separate Tables 7 and 8 of the medical insurance system. The median age was 86 years [IQR 82-90], and 74 patients (84.1%) were LTCI-certified. Cross-tabulation showed no significant association between LTCI certification and ADL level (χ² = 6.60, df = 3, P  = .086). LTCI certification was associated with fewer visits (IRR = 0.67, 95% CI 0.49-0.91, P  = .011). Compared with ADL “independent,” the “bed-bound” category received more visits (IRR = 1.99, 95% CI 1.28-3.10, P  = .002). Physician-issued special direction was associated with higher visit frequency (IRR = 3.39, 95% CI 2.59-4.48, P  < .001). These findings suggest that function-based, budget-capped frameworks may under-allocate nursing intensity for medically complex HF patients. Aligning visit planning with medical risk in the early post-discharge period may improve equity and care quality.

    DOI: 10.1177/10848223251397543

    Other URL: https://journals.sagepub.com/doi/full-xml/10.1177/10848223251397543

  • Does the Home-death Rate Reflect Medically Attended Community Deaths in Japan? OA

    Takemasa Ishikawa, Yoshiyuki Takashima

    F1000Research   14   1272 - 1272   2025.11( eISSN:2046-1402

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    Background The home-death rate is widely used in Japan as an indicator of community-based end-of-life care; however, this rate includes deaths without professional involvement. This study examines whether the home-death rate reflects medically attended home-based deaths across municipalities. Methods An ecological panel study was conducted using data from 1,741 municipalities obtained in 2017, 2020, and 2023 (5,222 municipality-year observations). National datasets from the Ministry of Health, Labor, and Welfare include data on medical institutions, home-visit nursing services, and clinic-certified home deaths. The dependent variable was the proportion of deaths occurring at home. Explanatory variables included home deaths certified by home-care support clinics and general clinics as well as deaths under home-visit nursing reimbursed by medical or long-term care insurance. Fixed-effects panel regression models with municipality and year effects were applied, using cluster-robust standard errors. Finally, correlations between the model residuals and prefectural rates of coroner-investigated deaths were examined to explore the influence of non-medical deaths. Results Home deaths certified by general clinics and deaths under medical-insurance-reimbursed visiting nursing were significantly associated with higher home-death rates (β=4.06, 95% confidence interval (95%CI), 1.28–6.85; β=31.75, 95%CI 8.14–55.37, respectively). The associations between home-care support clinics and long-term care insurance-reimbursed visiting nursing were not significant. No correlation was found between residuals and prefectural rates of coroner-investigated deaths (r=0.09, 95%CI, –0.20–0.37). Conclusions Japan’s home-death rate partly reflects medically attended home deaths, particularly those involving general clinics and medical-insurance-reimbursed visiting nursing. However, because this rate also includes deaths without professional care, it should be interpreted as a contextual rather than a quality indicator of end-of-life care and complemented by measures capturing care involvement and coordination.

    DOI: 10.12688/f1000research.172900.1

    Other URL: https://f1000research.com/articles/14-1272/v1/pdf

  • 腹膜透析を継続した療養者の在宅終末期を支えた訪問看護支援

    佐々木 早苗, 上野 ゆり, 石川 武雅

    ナーシングケアコネクトジャーナル   2 ( 1 )   1 - 7   2025.08

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    認知機能や身体機能が低下した80歳代の腹膜透析(PD)を行っている男性患者への訪問看護の支援について報告した。対象患者は40歳代のときにI型糖尿病と診断され、インスリンの自己注射を行っていた。1年前にかかりつけ医より腎機能低下を指摘され、PD導入となった。認知機能障害がみられ、身体的ADLの低下により、セルフケアも家族の支援も困難な状態であった。本人や家族のPD関連手技やインスリン皮下注射が困難であり、訪問看護師が手技の実技を担うこととした。訪問看護導入3ヵ月後、右上肢の脱力が観察され、左中脳動脈領域の脳梗塞を認め入院となり、2ヵ月後自宅退院となった。さらに2ヵ月後より自身での体位変換が困難となり、褥瘡を認め、訪問看護師による褥瘡処置を実施した。訪問看護師がPD手技を全面的に担い、あわせて食事介助などの生活支援を行い治療継続できていたが、1ヵ月後自宅にて死亡した。

  • Assessing the sufficiency of patient information transfer from hospitals to psychiatric home-visit nurses: A nationwide cross-sectional survey Reviewed

    Yoshiyuki Takashima, Takemasa Ishikawa

    Global Health & Medicine   7 ( 3 )   260 - 265   2025.06( ISSN:2434-9186 ( eISSN:2434-9194

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    <p>Effective information transfer from hospitals to psychiatric home-visit nurses is essential for ensuring continuity of care. However, previous studies have suggested that discharge information is often inadequate, particularly regarding the psychosocial aspects of patient care. This study assessed home-visit nurses' subjective evaluations of the adequacy of patient information provided by hospitals in psychiatric home-visit nursing. A nationwide cross-sectional survey was distributed to 2,000 home-visit nursing agencies across Japan, yielding 482 responses. After excluding one invalid response, 481 responses were analyzed (response rate: 8.0%). The sufficiency of patient information was calculated as the logarithm of the ratio between the information received and the information requested by nurses. Wilcoxon signed-rank tests confirmed that all gaps between the information received and requested were significant (<i>p</i> < 0.001). The information that was least adequately provided included "psychological test results" (mean adequacy score = −0.23, SD = 0.28), "signs of worsening psychiatric symptoms" (mean adequacy score = −0.21, SD = 0.23), and "coping strategies for psychiatric symptoms" (mean adequacy score = −0.21, SD = 0.23). The information that was most adequately provided was "prescription details" (mean adequacy score = −0.07, SD = 0.16) and "diagnosis" (mean adequacy score = −0.09, SD = 0.18). To enhance information transfer, hospitals should review and revise discharge summaries to ensure the inclusion of critical items with low adequacy scores.</p>

    DOI: 10.35772/ghm.2025.01040

    PubMed

    CiNii Research

  • 病院から精神科訪問看護師への患者情報伝達の十分性評価 全国規模の横断調査(Assessing the sufficiency of patient information transfer from hospitals to psychiatric home-visit nurses: A nationwide cross-sectional survey)

    Takashima Yoshiyuki, Ishikawa Takemasa

    Global Health & Medicine   7 ( 3 )   260 - 265   2025.06( ISSN:2434-9186

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    精神科訪問看護に際し患者情報が病院から看護師へ十分に伝達されているか、訪問看護を行う看護師を対象として主観的に評価してもらった。日本全国にわたる訪問看護の事業者、2000団体に対し横断調査を実施し482団体から回答を得、その回答内容が有効であった481団体(回答率8.0%)のデータを解析した。看護師が求めた患者情報に対し、受け取った情報が充足した比を算出してその対数を取ることで患者情報の充足性の指標とした。統計解析の結果、求めた情報と提供された情報の間にみられた落差は、どの項目でも有意な差として検出されたことが明らかになった(p<0.001)。充足度が最も低かった患者情報の項目は、心理検査の結果、精神症状悪化の徴候、精神症状への対処方法(コーピング方略)であった。逆に最も充足度が高かった項目は処方の詳細と診断であった。患者情報の申し送りを向上させるため、充足度が低かった大事な項目が必ず提供情報に含まれるよう、病院は退院時要約を再検討し修正すべきであると結論された。

  • 訪問看護事業所の増加は医療費削減に寄与したか 2015年~2021年の全市町村におけるパネルデータ解析

    石川 武雅, 高島 佳之

    厚生の指標   72 ( 5 )   8 - 13   2025.05( ISSN:0452-6104

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    目的 本研究は,2015年から2021年における全国1,741市町村を対象に訪問看護事業所数の増加が入院医療費および総医療費に与える影響を定量的に検証することを目的とした。方法 本研究は,厚生労働省や政府統計の総合窓口(e-Stat),総務省による公開情報から,2015年から2021年における各市町村の総人口,65歳以上人口,世帯数,病院数,在宅療養支援診療所数,訪問看護事業所数,平均所得割額,入院医療費,総医療費を収集した。目的変数に総医療費および入院医療費,説明変数に訪問看護事業所数,調整変数に人口密度,高齢化率,世帯当たり人口,病院数,在宅療養支援診療所数,平均所得割額を投入したプールドOrdinary Least Squaresモデル,固定効果モデル,変量効果モデルを作成した。作成した3つのモデルから,F検定,Breusch-Paganのラグランジュ乗数検定,ハウスマン検定を用いて,最も適切なモデルを選択した。有意水準は5%と設定した。結果 2015年から2021年にかけて,全国の市町村における訪問看護事業所数,高齢化率,入院医療費,総医療費は全体的に増加傾向を示した。入院医療費,総医療費いずれのモデルにおいても,モデルの比較において固定効果モデルが最も支持された。固定効果モデルの結果より,訪問看護事業所数の係数は入院医療費に対して627.4(95%信頼区間:456.0-798.7,p<0.001),総医療費に対して857.9(95%信頼区間:700.1-1,015.7,p<0.001)であり,訪問看護事業所数の増加が医療費の増加と有意に関連していた。結論 本研究は,訪問看護事業所数の増加が入院医療費および総医療費の増加と有意に関連していることを明らかにした。これらの結果は,訪問看護の供給拡大が短期的な医療費削減に直結しない可能性を示唆している。しかし,訪問看護は患者のQOL向上や在宅療養の継続など,医療費以外にも重要な効果をもたらす可能性があり,その総合的な価値を評価する必要がある。また,予防的な介入は短期的には医療費を増大させるが,長期的には重篤な疾患の進行予防により医療費を是正させる可能性もある。そのため,より長期における訪問看護の効果を検証する必要がある。医療費の適正化と質の高いケアの両立を目指し,訪問看護の質の向上,標準化,質評価の強化,診療報酬制度の見直しなど,多角的な政策対応が求められる。(著者抄録)

  • Exploring Prognostic Indicators in Home-Based End-of-Life Care: A Preliminary Study Using Nursing Records and Text Mining

    Takemasa ISHIKAWA, Yoshiyuki TAKASHIMA, Haruka IMURA, Toshio SAKAMOTO

    International Symposium on Affective Science and Engineering   ISASE2025 ( 0 )   1 - 4   2025.05( eISSN:2433-5428

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    Authorship:Lead author   Publishing type:Research paper (international conference proceedings)   International / domestic magazine:International journal  

    Accurate prognostic prediction is essential in end-of-life care, particularly in Japan, where cultural values emphasize the importance of being present at the time of death. However, tools that are both accurate and feasible for use in home settings remain limited. Home-visiting nurses are often the primary healthcare professionals most involved during the terminal phase, providing detailed observations through their nursing records. These records may offer valuable insights for prognostic prediction in home-based care. A retrospective analysis was conducted using nursing records from 71 patients who received care from the Nana-r Home-visit Nursing Station between April 2016 and December 2023. Data from the final month before death were analyzed, comprising 1,217 nursing records and 57,884 words of text data. Text mining with KH Coder was used to examine co-occurrence networks and analyze keyword patterns in relation to the number of days until death. The analysis identified themes such as excretion-related activities, distress symptoms, skin and oral health, and consciousness levels. Temporal patterns revealed that terms like "walking" and " eating" were more common earlier, while "consciousness," "breathing," and "urination" appeared closer to death, reflecting systemic decline. These findings suggest that nursing records, particularly their free-text descriptions, provide meaningful insights into the terminal phase. Integrating these observations with quantitative data may support the development of practical tools to improve care strategies for patients receiving end-of-life care in home settings.

    DOI: 10.5057/isase.2025-c000006

    CiNii Research

  • 訪問看護事業所の増加は医療費削減に寄与したか:2015年~2021年の全市町村におけるパネルデータ解析 Reviewed

    石川武雅, 髙島佳之

    厚生の指標   72 ( 5 )   8 - 13   2025.05

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    Authorship:Lead author   International / domestic magazine:Domestic journal  

    目的 本研究は,2015年から2021年における全国1,741市町村を対象に訪問看護事業所数の増加が入院医療費および総医療費に与える影響を定量的に検証することを目的とした。
    方法 本研究は,厚生労働省や政府統計の総合窓口e-Stat,総務省による公開情報から,2015年から2021年における各市町村の総人口,65歳以上人口,世帯数,病院数,在宅療養支援診療所数,訪問看護事業所数,平均所得割額,入院医療費および総医療費を収集した。目的変数に総医療費および入院医療費,説明変数に訪問看護事業所数,調整変数に人口密度,高齢化率,世帯当たり人口,病院数,在宅療養支援診療所数,平均所得割額を投入したプールドOrdinary Least Squaresモデル,固定効果モデルおよび変量効果モデルを作成した。作成した3つのモデルから,F検定,Breusch-Paganのラグランジュ乗数検定およびハウスマン検定を用いて,最も適切なモデルを選択した。有意水準は5%と設定した。
    結果 2015年から2021年にかけて,全国の市町村における訪問看護事業所数,高齢化率,入院医療費および総医療費は全体的に増加傾向を示した。入院医療費,総医療費いずれのモデルにおいても,モデルの比較において固定効果モデルが最も支持された。固定効果モデルの結果より,訪問看護事業所数の係数は入院医療費に対して627.4 (95%信頼区間: 456.0~798.7,p < 0.001),総医療費に対して857.9 (95%信頼区間: 700.1~1,015.7,p < 0.001) であり,訪問看護事業所数の増加が医療費の増加と有意に関連していた。
    結論 本研究は,訪問看護事業所数の増加が入院医療費および総医療費の増加と有意に関連していることを明らかにした。これらの結果は,訪問看護の供給拡大が短期的な医療費削減に直結しない可能性を示唆している。しかし,訪問看護は患者のQOL向上や在宅療養の継続など,医療費以外にも重要な効果をもたらす可能性があり,その総合的な価値を評価する必要がある。また,予防的な介入は短期的には医療費を増大させるが,長期的には重篤な疾患の進行予防により医療費を是正させる可能性もある。そのため,より長期における訪問看護の効果を検証する必要がある。医療費の適正化と質の高いケアの両立を目指し,訪問看護の質の向上,標準化,質評価の強化,診療報酬制度の見直しなど,多角的な政策対応が求められる。

  • Effect of Home-Visit Nursing Agencies and the Number of Nurses per Agency on Home Death Rates in Japan: A Panel Data Study from 2016 to 2022 OA

    Takemasa Ishikawa, Yoshiyuki Takashima

    Jxiv   2025.03

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    Authorship:Lead author   Publishing type:Research paper (other academic)  

    This study examined the effects of increasing home-visit nursing agencies and nurses per agency on home death rates in Japan, considering the growing demand for end-of-life care. Publicly available data from 1,741 municipalities from 2016 to 2022 were analyzed using Pooled Ordinary Least Squares, Fixed-Effects, and Random-Effects models. Covariates such as population density, proportion of the older population, household size, number of hospitals, and home clinics were included. The Fixed-Effects model showed that each additional home-visit nursing agency increased the home death rate by 0.06% (p = .010), and each additional nurse per agency increased it by 0.11% (p = .001). Expanding the workforce within existing agencies may have a greater impact on home deaths than merely increasing the number of agencies. Future research should consider factors like family caregiving capacity and regional healthcare practices to improve home-based end-of-life care strategies.

    DOI: 10.51094/jxiv.1164

    CiNii Research

  • Home-Based Rehabilitation With Frenkel’s Exercises for Adrenomyeloneuropathy: A Case Report Reviewed

    Takemasa Ishikawa

    Cureus   17 ( 3 )   e80878   2025.03( ISSN:2168-8184

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    Adrenoleukodystrophy (ALD) encompasses a spectrum of X-linked genetic disorders, including the adult-onset adrenomyeloneuropathy (AMN) phenotype. We report the case of a 32-year-old male with AMN and examine the impact of a tailored home-based rehabilitation regimen, specifically employing Frenkel’s exercises. The patient displayed classic AMN symptoms, including spastic paraparesis, peripheral neuropathy, and urinary disturbances. Initial assessments revealed significant ataxia-related impairments, particularly in gait, stance, and heel-shin slide. A home-visit nurse collaborated with the patient to develop and implement a personalized regimen utilizing Frenkel’s exercises. Over one month, the patient demonstrated remarkable improvement, reducing his Scale for the Assessment and Rating of Ataxia score from 10 to 5. Detailed analysis revealed specific enhancements in gait, stance, and fine motor control, aligning with the goals of Frenkel’s exercises. These findings suggest that Frenkel’s exercises can be a valuable addition to AMN rehabilitation, addressing ataxia-related motor deficits. While recognizing AMN’s complexity and individual variability, further research is essential to refine rehabilitation strategies. Long-term follow-up studies are needed to assess intervention sustainability and its impact on the ALD spectrum’s overall disease progression and quality of life.

    DOI: 10.7759/cureus.80878

    PubMed

  • Protocol for a Scoping Review on Home-Visit Nursing Practices and Their Effects on People Undergoing Peritoneal Dialysis

    Takemasa Ishikawa, Takahiro Tanaka, Haruka Imura, Tomomi Hiraguri, Daisuke Nakamura, Kazumi Ushida, Megumi Uchihashi, Yuka Fukata, Ryoko Sekiguchi

    Open Science Framework   2025.02

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    DOI: 10.17605/OSF.IO/JXS5P

  • 訪問看護記録を用いた後方視的調査による訪問看護開始2週間の訪問回数と入院・施設入所の発生の関連の検証

    石川 武雅, 関口 亮子, 深田 悠花, 金谷 玲子, 清水 知子, 勝眞 久美子

    日本在宅医療連合学会誌   6 ( 1 )   10 - 18   2025.02

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    本研究は,訪問看護導入時の訪問看護回数とその後の入院・施設入所との関連を検証した.1訪問看護事業所において2016年4月~2023年12月に訪問看護を終了した65歳以上の利用者468名を対象とした.対象者の入院・施設入所を目的変数,訪問看護開始2週間の訪問回数を説明変数としたロジスティック回帰分析を行った.基本属性や生活自立度などを共変数として調整したロジスティック回帰分析により,入院・施設入所に対する訪問看護開始2週間の訪問回数のオッズ比(95%信頼区間)は,0.93(0.89-0.97)であった.高齢療養者の初期の訪問看護回数が,その後の入院・施設入所に関連することが示唆された.(著者抄録)

  • Predicting the growth and key influencing factors of home-visit nursing offices in Japan using machine learning Reviewed

    Takemasa Ishikawa

    World Journal of Advanced Research and Reviews   25 ( 2 )   2284 - 2294   2025.02

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)  

    The distribution of home-visit nursing offices in Japan is uneven, with some municipalities facing shortages. Understanding the factors influencing their growth rate is crucial for policy planning. This study developed a machine learning model to predict the growth rate of home-visit nursing offices using municipality-level time-series data from 2015 to 2022. Demographic indicators, healthcare resources, and economic factors were incorporated as predictors. Extreme Gradient Boosting (XGBoost) was employed, integrating one-year and three-year lag variables and a three-year moving average to capture temporal trends. Model performance was assessed using R², and Shapley Additive Explanations (SHAP) analysis was conducted to interpret feature importance. The model demonstrated strong predictive performance, with an average R² of 0.87. The past number of home-visit nursing offices had the highest impact on growth, with the three-year moving average contributing positively and the one-year lag variable indicating potential market saturation. Population density was also positively associated with growth. Although the aging rate had a limited overall influence, a higher aging rate tended to be associated with a lower growth rate of home-visit nursing offices. Economic indicators and the number of hospitals had minor influences. These findings suggest that market conditions and supply-side constraints significantly shape the expansion of home-visit nursing offices. Strategic interventions, such as financial support in underserved areas and sustainability measures in saturated regions, are needed to ensure an optimal distribution of services. Future research should explore additional socioeconomic factors and external shocks to refine predictive models and support data-driven policymaking.

    DOI: 10.30574/wjarr.2025.25.2.0602

  • Latent class analysis of communication methods and devices among Japanese patients with amyotrophic lateral sclerosis: a cross-sectional survey Reviewed

    Takemasa Ishikawa, Kaoru Konishi

    Speech, Language and Hearing   28 ( 1 )   2025.01( ISSN:2050571X

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    Augmentative and alternative communication (AAC) is used to support individuals with communication impairments, such as those with amyotrophic lateral sclerosis (ALS). The selection of AAC for patients with ALS involves a variety of factors, sometimes leading to the utilisation of multiple AAC methods. This study aimed to survey patients with ALS in Japan, focusing on objectives: to describe the actual state of AAC usage among these patients and to investigate potential classifications in their choice of communication methods, along with identifying influential latent factors. Data from 102 patients with ALS were analysed using descriptive statistics and latent class analysis. A latent class analysis revealed four distinct classifications: class I, replacing unaid communication with AAC (n = 46, 45.1%); class II, with minimal AAC use (n = 24, 23.5%); class III, centred around no tech/low-tech AAC (n = 17, 16.7%); and class IV combining unaid communication with various AACs (n = 15, 14.7%). These classifications were influenced by age at diagnosis, TPPV use, gastrostomy use, and the Revised ALS Functional Rating Scale. The characteristics of each class revealed a correlation between increased medical needs, such as bulbar palsy, motor and respiratory function decline, and the necessity for AAC. Notably, patients diagnosed at an older age and those with severe bulbar palsy, like those seen in bulbar-onset ALS, require early communication support due to early onset of communication impairments. Additionally, introducing AAC in the early stages of ALS suggests that learning diverse communication methods can contribute to the maintenance of communication.

    DOI: 10.1080/2050571X.2024.2403239

  • An education program modified with e-learning brought equivalent outcomes in healthcare students' communication support for people with amyotrophic lateral sclerosis Reviewed

    Takemasa Ishikawa, Yugo Narita, Tamotsu Imura, Yuji Tanaka, Michiko Nakai, Keiko Fukuroku

    World Journal of Advanced Research and Reviews   25 ( 1 )   24 - 36   2025.01

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    Authorship:Lead author  

    DOI: 10.30574/wjarr.2025.25.1.4043

  • Role of a Home-visit Nursing Agency in Supporting Patients with Heart Failure on Continuous Catecholamine Infusion: A Case Series Study Reviewed OA

    Takemasa Ishikawa, Ryoko Sekiguchi, Tomoko Shimizu, Yuka Fukata, Reiko Kanaya, Kumiko Katsuma

    Kobe Journal of Medical Sciences   70 ( 3 )   E93 - E99   2024.10( ISSN:0023-2513 ( eISSN:1883-0498

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   International / domestic magazine:International journal  

    DOI: 10.24546/0100491788

    PubMed

  • 病院から精神科訪問看護を行う看護師への情報伝達の現状と満足感への影響要因に関する横断的調査

    高島 佳之, 石川 武雅

    日本在宅医療連合学会誌   5 ( 3 )   1 - 9   2024.08

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    精神科における病院から訪問看護への情報伝達の現状と情報に対する訪問看護師の満足感への影響要因を明らかにすることを目的に,精神科訪問看護を行う看護師を対象としたアンケート調査を実施した.483名(回収率8.5%)の回答から.病院からの情報伝達について満足していたのは2割弱に留まった.また,8割以上が情報量の不足を感じ,情報の質は高いと回答した回答者は1割に満たなかった.情報提供への満足感の有無に対する多変量ロジスティック回帰分析によるオッズ比(95%信頼区間)は,情報量:2.7(1.7-4.5),情報の質:3.5(2.0-5.8),看護サマリーの頻度:3.5(1.6-7.9)であった.(著者抄録)

  • カテコラミン持続点滴中の心不全患者に対する訪問看護ステーションの役割 症例シリーズ研究(Role of a Home-visit Nursing Agency in Supporting Patients with Heart Failure on Continuous Catecholamine Infusion: A Case Series Study)

    Ishikawa Takemasa, Sekiguchi Ryoko, Shimizu Tomoko, Fukata Yuka, Kanaya Reiko, Katsuma Kumiko

    Kobe Journal of Medical Sciences   70 ( 3 )   E93 - E99   2024( ISSN:0023-2513

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    カテコラミン持続点滴を行う心不全患者の転帰と訪問看護介入の影響を調べるため、後ろ向き症例シリーズ研究を行った。心不全のため在宅でカテコール持続点滴を受けており、2016年4月~2024年3月に当訪問看護ステーションでケアを行った40歳代~90歳代の患者8例(男性6例、女性2例、年齢中央値68.5歳)を対象とした。在宅でのカテコラミン持続点滴を要した疾患として最も多かったのは拡張型心筋症であった。カテコラミン持続点滴期間は中央値58.0日、訪問看護の頻度は中央値で週8.4回であった。緊急訪問看護の頻度は週0.7回で、調査期間中に45回発生し、その最も多い理由は点滴装置の故障の管理であった。8例中6例が自宅で死亡し、1例が致死的不整脈により入院し、1例がカテコラミン持続点滴を中止した。

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MISC

  • 筋萎縮性側索硬化症患者の多様なコミュニケーションニーズに応じたコミュニケーション支援に関する研究

    石川武雅

    大阪大学大学院博士論文   2025

  • 入院によって心身の状態が低下した高齢患者・家族の在宅生活への適応を促すための訪問看護師のアセスメント視点および看護実践内容の明確化-退院直後の特別訪問看護指示期間中の訪問看護に焦点をあてて-

    関口亮子, 石川武雅, 深田悠花, 高島佳之

    フランスベッド・ホームケア財団研究助成・事業助成報告書ボランティア活動助成報告書(CD-ROM)   34th   2024

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Presentations

  • Short-Term Mortality Prediction Using Home-Visit Nursing Records: Identifying End-of-Life Changes through Machine Learning

    Takemasa Ishikawa, Yoshiyuki Takashima, Haruka Imura, Toshio Sakamoto

    The 29th East Asian Forum Of Nursing Scholars  2026.02 

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    Presentation type:Oral presentation (general)  

  • 通所介護ならびにグループホーム利用者における下腿周囲長の要因

    矢野 朋子, 佐野 ちひろ, 冨岡 洵, 山本 真理子, 石川 武雅, 関口 亮子, 深田 悠花, 勝眞 久美子

    日本看護科学学会学術集会講演集  2025.12  (公社)日本看護科学学会

  • 日本における配偶者と死別した高齢者の悲嘆に関するスコーピングレビュー

    西田 知代, 北澤 友美, 高島 佳之, 石川 武雅

    日本看護科学学会学術集会講演集  2025.12  (公社)日本看護科学学会

  • 筋萎縮性側索硬化症患者の在宅療養資源における地域特性のクラスタ分析

    都築 亜美, 石川 武雅, 澤田 樹里

    日本難病医療ネットワーク学会機関誌  2025.11  (一社)日本難病医療ネットワーク学会

  • 「日々の気づきから安全を築く」KIZUKIレポートを基盤とした在宅医療安全システム構築への実践的アプローチ

    糀屋 絵理子, 清水 千尋, 竹下 莉子, 齊前 裕一郎, 肥後 友彰, 関口 亮子, 石川 武雅, 勝眞 久美子, 佐藤 仁, 竹屋 泰

    医療の質・安全学会学術集会プログラム・抄録集  2025.11  (一社)医療の質・安全学会

  • 筋萎縮性側索硬化症患者の在宅療養資源における地域特性のクラスタ分析

    都築 亜美, 石川 武雅, 澤田 樹里

    日本難病看護学会誌  2025.10  (一社)日本難病看護学会

  • 神経難病者に対するケアマネジメントにおける困難事例と成功事例の分析

    芝崎 伸彦, 石川 武雅, 降矢 茂実, 杉本 諭, 小西 かおる, 沼山 貴也

    臨床神経学  2025.09  (一社)日本神経学会

  • 在宅療養高齢者の服薬管理における薬看連携の実態と今後の課題

    糀屋 絵理子, 藤井 美咲, 齊前 裕一郎, 大井 雅友, 勝久 美月, 竹下 悠子, 稲泉 信行, 前泉 優月, 石川 武雅, 関口 亮子, 深田 悠花, 勝眞 久美子, 大塚 泰葉, 肥後 友彰, 竹屋 泰

    日本在宅医療連合学会大会プログラム・講演抄録集  2025.06  (一社)日本在宅医療連合学会

  • Exploring Prognostic Indicators in Home-Based End-of-Life Care: A Preliminary Study Using Nursing Records and Text Mining International conference

    Takemasa Ishikawa, Yoshiyuki Takashima, Haruka Imura, Toshio Sakamoto

    the 11th International Symposium on Affective Science and Engineering  2025.03 

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    Presentation type:Oral presentation (general)  

    Accurate prognostic prediction is essential in end-of-life care, particularly in Japan, where cultural values emphasize the importance of being present at the time of death. However, tools that are both accurate and feasible for use in home settings remain limited. Home-visiting nurses are often the primary healthcare professionals most involved during the terminal phase, providing detailed observations through their nursing records. These records may offer valuable insights for prognostic prediction in home-based care. A retrospective analysis was conducted using nursing records from 71 patients who received care from the Nana-r Home-visit Nursing Station between April 2016 and December 2023. Data from the final month before death were analyzed, comprising 1,217 nursing records and 57,884 words of text data. Text mining with KH Coder was used to examine co-occurrence networks and analyze keyword patterns in relation to the number of days until death. The analysis identified themes such as excretion-related activities, distress symptoms, skin and oral health, and consciousness levels. Temporal patterns revealed that terms like "walking" and "eating" were more common earlier, while "consciousness," "breathing," and "urination" appeared closer to death, reflecting systemic decline. These findings suggest that nursing records, particularly their free-text descriptions, provide meaningful insights into the terminal phase. Integrating these observations with quantitative data may support the development of practical tools to improve care strategies for patients receiving end-of-life care in home settings.

  • Impact of the Number of Home-Visit Nursing Agencies and Nurses per Agency on Home Death Rates in Japanese Municipalities: A Panel Data Analysis from 2019 to 2022 International conference

    Takemasa Ishikawa, Yoshiyuki Takashima

    15th International Nursing Conference & 28th East Asian Forum of Nursing Scholars  2025.02 

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    Presentation type:Poster presentation  

    Aims: Japan’s aging population has increased the demand for home-based end-of-life care, and policies have led to a steady increase in home-visit nursing agencies. This study investigates how the number of home-visit nursing agencies and the number of nurses per agency influence home death rates across Japanese municipalities.
    Methods: Panel data from 1,741 municipalities between 2019 and 2022 were used to analyze the relationship between home death rates and the number of home-visit nursing agencies and nurses per agency. Data were sourced from the Ministry of Health, Labour and Welfare and the Ministry of Internal Affairs. Control variables included population density, aging rate, household numbers, hospital numbers, home clinic numbers and average income tax amount. Statistical models, including fixed effects, random effects, and Pooled Ordinary Least Squares, were applied, with model comparisons based on F-tests, Lagrange Multiplier tests, and Hausman tests. The analysis was conducted using Python (3.11.2) at a 5% significance level.
    Results: The fixed effects model was selected as the most appropriate. The model demonstrated significant associations between the number of home-visit nursing agencies (β = 0.06, p = 0.010) and nurses per agency (β = 0.11, p = 0.001) with higher home death rates.
    Conclusions: Both the number of agencies and the number of nurses were significant; however, the strength of association for nurses per agency was larger. This suggests that increasing the scale of existing agencies, by adding more nurses, may be more important than simply increasing the number of agencies to improve home-based end-of-life care.

  • 在宅腹膜透析療養者に対する訪問看護の実践内容と効果に関するスコーピングレビュー

    石川武雅, 平栗智美, 井村春香, 田中貴大, 牛田多美, 中村大介, 内橋恵, 深田悠花, 関口亮子

    日本腹膜透析医学会学術集会・総会プログラム・抄録集  2025 

  • せん妄を呈した腹膜透析療養者に対する訪問看護により在宅療養継続が可能となった一事例

    笹次有希子, 入江敬, 佐々木早苗, 横山みゆき, 石川武雅

    日本腹膜透析医学会学術集会・総会プログラム・抄録集  2025 

  • Healthcare students’ skills and perceived burden were shown to improve after 6 months of a single AAC education programme with e-learning

    Takemasa ISHIKAWA, Yugo NARITA, Tamotsu IMURA, Yuji TANAKA, Michiko NAKAI, Keiko Fukuroku

    35th International Symposium on ALS/MND  2024.12 

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    Presentation type:Poster presentation  

  • 訪問看護における医療安全の実態と課題 在宅療養高齢者を対象とした医療安全システム構築を目指して

    大井 雅友, 糀屋 絵理子, 藤井 美咲, 齊前 裕一郎, 勝久 美月, 竹下 悠子, 前泉 優月, 稲泉 信行, 石川 武雅, 関口 亮子, 深田 悠花, 勝眞 久美子, 肥後 友彰, 竹屋 泰

    日本看護科学学会学術集会講演集  2024.12  (公社)日本看護科学学会

  • 在宅療養高齢者の服薬管理における効率的な多職種連携に向けた実態調査

    藤井 美咲, 糀屋 絵理子, 齊前 裕一郎, 勝久 美月, 竹下 悠子, 稲泉 信行, 前泉 優月, 大井 雅友, 石川 武雅, 関口 亮子, 深田 悠花, 勝眞 久美子, 肥後 友彰, 竹屋 泰

    日本看護科学学会学術集会講演集  2024.12  (公社)日本看護科学学会

  • がん療養者の訪問看護終了の転帰と在宅療養支援診療所介入有無の関連

    石川 武雅, 関口 亮子, 深田 悠花, 金谷 玲子, 勝眞 久美子

    日本在宅看護学会学術集会プログラム・抄録集  2024.11  (一社)日本在宅看護学会

  • 看護現場におけるAIの活用

    石川 武雅

    日本医療経営学会学術総会プログラム・抄録集  2024.11  (一社)日本医療経営学会

  • 地域における医療安全システムの構築に向けた学際的チームでの取り組み

    石川 武雅, 関口 亮子, 深田 悠花, 大塚 泰葉, 肥後 友彰, 齊前 裕一郎, 藤井 美咲, 糀屋 絵理子, 竹屋 泰, 勝眞 久美子

    医療の質・安全学会学術集会プログラム・抄録集  2024.11  (一社)医療の質・安全学会

  • 在宅医療における指示報告・物品管理の実態調査と多職種連携アプリを用いた安全な物品管理への取り組み

    大塚 泰葉, 肥後 友彰, 糀屋 絵理子, 齊前 裕一郎, 勝久 美月, 竹下 裕子, 藤井 美咲, 石川 武雅, 勝眞 久美子, 竹屋 泰

    医療の質・安全学会学術集会プログラム・抄録集  2024.11  (一社)医療の質・安全学会

  • 筋萎縮性側索硬化症における五十音表透明文字盤使用方法の困難例や工夫点

    芝崎 伸彦, 石川 武雅, 中村 高仁

    日本神経理学療法学会学術大会プログラム・抄録集  2024.09  (一社)日本神経理学療法学会

  • Impact of Frequent Early Home-Visit Nursing on Hospitalization and Institutionalization Among Older People: A Retrospective Study International conference

    Ishikawa T, Sekiguchi R, Fukata Y, Kanaya R, Katsuma K

    UTokyo Nursing International Conference 2024  2024.07 

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    Presentation type:Poster presentation  

    Background: The Japanese healthcare insurance system caters to frequent home-visit nursing interventions immediately after hospital discharge. However, few studies have examined the effects of these frequent nursing visits.
    Objectives: This study examined the association between frequent nursing visits in the first two weeks following discharge and subsequent hospitalization or institutionalization among older people receiving home care.
    Methods: We retrospectively analyzed data for 459 people aged ≥ 65 years who received at least two weeks of home-visit nursing from Nana-r Home-visit Nursing Station between April 2016 and December 2023. Data were sourced from electronic nursing records. The primary outcome was hospital admission or institutionalization at the end of the home-visit nursing period. We used the number of visits in the initial two weeks as the main predictor in a logistic regression model. Covariates included age, gender, terminal diagnosis (life expectancy < 6 months), family involvement, and the degree of independence for the disabled and demented elderly. Missing values for the degree of independence were imputed using robust principal component analysis. Analyses were conducted using JMP (Ver. 17.2) with the significance level set at 5%. This study was approved by the Ethics Review Committee of the Japanese Association for Home Care Medicine (#2024-01).
    Results: The cohort comprised 236 men (50.3%) and had a median age of 83 (IQR: 78-89) years. End outcomes were home death (n = 164, 35.0%), hospitalization (n = 152, 32.4%), improvement (n = 84, 17.9%), and institutionalization (n = 69, 14.7%). The median number of visits was 4 (IQR: 2-10). Logistic regression showed that each additional visit decreased the odds of hospitalization or institutionalization (odds ratio 0.93, 95% confidence interval 0.90–0.97).
    Conclusions: The findings suggest that frequent initial nursing visits may reduce hospitalization and institutionalization among older people receiving home care.

  • The effect of home-visit nurses' psychiatric hospital work experience on recovery orientation in psychiatric home visit nursing: a cross-sectional study International conference

    Takashima Y, Matsumura M, Suzuki R, Ishikawa T

    2024.07 

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    Presentation type:Poster presentation  

  • 在宅療養高齢者の服薬管理における薬看連携の実態と課題

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