RY
Ryohei Yamamoto
Intensive Care UnitsCOVID-19Fecal IncontinenceMortalityolder adultsCatheterConstipationcorticosteroidCritical IllnessCritically ill patient
On Valency
published · living versionsW_p9e7su6t·v1 · currentpublished
M4Bench: Evaluating Procedural Specification for Clinical EHR Derivation Agents
with Hannes Ill, Rafi Al Attrach, Rajna Fani, Ahram Han +3
1 version
Preprints & journals
51 papers in the corpus · 2012–2026PAINT: A Framework for Multilingual Pain Representation from Medical Licensing Exams to Real-World Clinical Texts2610.18269v1 · Boya Zhang, Yuanchao Ma, Jiageng Wu et al.2026 · 0 citationsarXiv
Association of enteral nutrition reduction or discontinuation with diarrhea volume and caloric delivery in critically ill adults with diarrhea: A retrospective cohort study.42850757 · Yamamoto, Ryohei, Koroki, Takatoshi, Ueta, Yuna et al.2026 · 0 citationsNutrition in clinical practice : official publication of the American Society for Parenteral and Enteral Nutrition. 2026
Association Between Absorbent Product Use and Quality of Life in Community-Dwelling Older Adults.42786967 · Nakagawa, Hiroaki, Yamazaki, Hajime, Ozaka, Akihiro et al.2026 · 0 citationsGeriatrics & gerontology international. 2026;26(10):e70853
Elderly Health Check-Up and Functional Disability or Death in Adults 75 to 84 Years: A Target Trial Emulation.42691802 · Yamamoto, Ryohei, Yamazaki, Hajime, Nakagawa, Hiroaki et al.2026 · 0 citationsJournal of the American Medical Directors Association. 2026;27(11):106473
Impact of an ROX index-guided intubation strategy on mortality in patients receiving high-flow nasal cannula: a target trial emulation.42698089 · Yamamoto, Ryohei, Tohyama, Takeshi, Han, Ahram et al.2026 · 0 citationsJournal of intensive care. 2026;14(1)
Association of frailty screening-based preventive care with long-term care certification rates among Japanese people aged 75 years and older: an interrupted time-series analysis.42920343 · Soma, Shunsuke, Sasaki, Sho, Sakamoto, Sumie et al.2026 · 0 citationsAge and ageing. 2026;55(10)
Comparison of oxygenation targets in critically ill adults: a systematic review and network meta-analysis of randomized controlled trials.41738214 · Imai, Ryosuke, Yamamoto, Ryohei, Niitsu, Takayuki et al.2026 · 3 citationsAmerican journal of respiratory and critical care medicine. 2026;212(5):911-920
Impact of Caregiver Burden on the Preferred Place for End-of-Life Care Among Older Adults in Japan: A Cross-Sectional Study.41999356 · Ozaka, Akihiro, Sasaki, Sho, Nakagawa, Hiroaki et al.2026 · 0 citationsJournal of applied gerontology : the official journal of the Southern Gerontological Society. 2026:7334648261443117
Prognostic performance of the ratio of mean arterial pressure to norepinephrine equivalent dose in critically ill hypotensive patients: A single-center retrospective cohort study.41950761 · Kotani, Yuki, Karumai, Toshiyuki, Yamamoto, Ryohei et al.2026 · 0 citationsJournal of critical care. 2026;94:155560
Observation-process features are associated with larger domain shift in sepsis mortality prediction: a cross-database evaluation using MIMIC-IV and eICU-CRD10.64898/2026.04.05.26350209v1 · Yamamoto, R., Wu, F., Sprehe, L. K. et al.2026 · 0 citationsmedRxiv
Association Between Resolution of Constipation and Reduced Incidence of Fecal Incontinence: A Population-Based Longitudinal Study.41649273 · Nakagawa, Hiroaki, Yamazaki, Hajime, Ozaka, Akihiro et al.2026 · 2 citationsGeriatrics & gerontology international. 2026;26(2):e70390
Association Between Constipation and Fecal Incontinence in Community-Dwelling Older Adults in Japan.40187369 · Nakagawa, Hiroaki, Yamazaki, Hajime, Ozaka, Akihiro et al.2026 · 1 citationJournal of the American Medical Directors Association. 2026;27(3):105581
Classifying diarrhea in critically ill patients through various criteria: a cohort study.41029394 · Yamamoto, Ryohei, Yamazaki, Hajime, Koroki, Takatoshi et al.2025 · 2 citationsJournal of intensive care. 2025;13(1):55
Incidence of diffuse parenchymal lung disease in patients meeting the Berlin definition of acute respiratory distress syndrome on mechanical ventilation.40959165 · Norisue, Yasuhiro, Yamamoto, Ryohei, Yamakawa, Hideki et al.2025 · 1 citationERJ open research. 2025;11(5)
Effectiveness of antifibrotic treatment in real-world patients with progressive pulmonary fibrosis.40935264 · Niitsu, Takayuki, Fukushima, Kiyoharu, Komukai, Sho et al.2025 · 2 citationsRespiratory medicine. 2025;248:108347
Prescription and application adequacy of topical corticosteroids based on the finger-tip unit method in adult patients with atopic dermatitis: A cross-sectional study.41195052 · Matsuki, Fumi, Suzuki, Sumire, Hirose, Takashi et al.2025 · 1 citationJournal of general and family medicine. 2025;26(6):547-554
Unraveling important outcomes for elderly patients facing critical illness: a vignette-based survey.40372426 · Yamamoto, Ryohei, Yamazaki, Hajime, Nakagawa, Hiroaki et al.2026 · 4 citationsIntensive care medicine. 2025;51(6):1189-1191
The Japanese Clinical Practice Guidelines for Management of Sepsis and Septic Shock 2024.40087807 · Shime, Nobuaki, Nakada, Taka-Aki, Yatabe, Tomoaki et al.2025 · 42 citationsJournal of intensive care. 2025;13(1):15
The Japanese Clinical Practice Guidelines for Management of Sepsis and Septic Shock 2024.39996161 · Shime, Nobuaki, Nakada, Taka-Aki, Yatabe, Tomoaki et al.2025 · 16 citationsAcute medicine & surgery. 2025;12(1):e70037
Validity and Reliability of the Japanese Version of the ACE Tool for Assessing Evidence-based Medicine Competencies in Medical Practitioners and Students: An Evaluation in an Online Setting.39721681 · Someko, Hidehiro, Yamamoto, Ryohei, Ariie, Takashi et al.2025 · 4 citationsInternal medicine (Tokyo, Japan). 2025;64(14):2136-2142
Evaluation of the Impact of a Less-Invasive Trunk and Pelvic Trauma Protocol on Mortality in Patients with Severe Injury by Interrupted Time-Series Analysis.39202619 · Ishida, Tokiya, Iwasaki, Yudai, Yamamoto, Ryohei et al.2024 · 0 citationsMedicina (Kaunas, Lithuania). 2024;60(8)
Association between comorbidities at ICU admission and post-Sepsis physical impairment: A retrospective cohort study.38776846 · Kobara, Seibi, Yamamoto, Ryohei, Rad, Milad G et al.2024 · 2 citationsJournal of critical care. 2024;83:154833
Steroid Therapy for Patients with Septic Shock: A Multicenter Observational Study Conducted in Japan.38719604 · Murata, Maki, Shimizu, Sayaka, Yamamoto, Ryohei et al.2024 · 3 citationsInternal medicine (Tokyo, Japan). 2024;63(24):3307-3315
External validation of the HACOR score and ROX index for predicting treatment failure in patients with coronavirus disease 2019 pneumonia managed on high-flow nasal cannula therapy: a multicenter retrospective observational study in Japan.38360681 · Okano, Hiromu, Yamamoto, Ryohei, Iwasaki, Yudai et al.2024 · 8 citationsJournal of intensive care. 2024;12(1):7
How Can We Interpret Insomnia as a "Risk Factor" on Behavioral Symptom? Comments on the Article by Chekani et al.38182123 · Matsushita, Takashi, Suzuki, Ryuji, Ito, Hideyuki et al.2024 · 0 citationsJournal of the American Medical Directors Association. 2024;25(3):552-553
Concomitant severe traumatic brain injury is not associated with increased red blood cell transfusion volumes in patients with pelvic fractures: A retrospective observational study.38184413 · Hirano, Takaki, Yamada, Kohei, Terayama, Takero et al.2024 · 0 citationsInjury. 2024;55(3):111296
Challenges hindering emergency physicians; involvement in multicenter collaborative studies in Japan: A nationwide survey analysis.38020489 · Yasuda, Manaho, Saito, Ayaka, Goto, Tadahiro et al.2024 · 4 citationsAcute medicine & surgery. 2023;10(1):e906
Poor Social Functioning: A Potentially Modifiable Risk Factor for Pneumonia in the Elderly.37877109 · Hamaguchi, Sugihiro, Sasaki, Sho, Shimizu, Sayaka et al.2023 · 0 citationsCureus. 2023;15(10):e47520
Derivation and validation of a clinical predictive model of NT-proBNP ≥125 pg/mL to detect pre-heart failure.37247659 · Nogi, Kazutaka, Yamamoto, Ryohei, Ueda, Tomoya et al.2023 · 9 citationsJournal of cardiology. 2023;82(6):481-489
Potential Biases in Critical Care Observational Studies: Comments on an Observational Study on Association Between Family Presence and Delirium in Critically Ill Patients.37052446 · Morishita, Shigemi, Yamamoto, Ryohei, Yamada, Yoshie2023 · 1 citationCritical care medicine. 2023;51(5):e124-e125
Comparison of postoperative analgesia use between robotic and laparoscopic total hysterectomy: a retrospective cohort study.36952133 · Tanabe, Shohei, Yamamoto, Ryohei, Sugino, Sachiyo et al.2024 · 1 citationJournal of robotic surgery. 2023;17(4):1669-1674
Dose-response relationship between diarrhea quantity and mortality in critical care patients: A retrospective cohort study.36780452 · Yamamoto, Ryohei, Yamazaki, Hajime, Yamamoto, Shungo et al.2023 · 6 citationsPloS one. 2023;18(2):e0280806
Longitudinal changes in mental health outcomes after COVID-19 hospitalization: A prospective study.36889020 · Shirakawa, Chigusa, Tachikawa, Ryo, Yamamoto, Ryohei et al.2023 · 4 citationsRespiratory investigation. 2023;61(3):321-331
Development and Initial Psychometric Validation of the COVID-19 Pandemic Burden Index for Healthcare Workers.36652099 · Yamamoto, Ryohei, Yamazaki, Hajime, Kobara, Seibi et al.2023 · 2 citationsJournal of general internal medicine. 2023;38(5):1239-1247
Efficacy of Higher Positive End-Expiratory Pressure Ventilation Strategy in Patients With Acute Respiratory Distress Syndrome: A Systematic Review and Meta-Analysis.35989808 · Yamamoto, Ryohei, Sugimura, Sosuke, Kikuyama, Kazuki et al.2022 · 4 citationsCureus. 2022;14(7):e26957
Certolizumab pegol for maintenance of medically induced remission in Crohn's disease.35771590 · Okabayashi, Shinji, Yamazaki, Hajime, Yamamoto, Ryohei et al.2022 · 12 citationsThe Cochrane database of systematic reviews. 2022;6:CD013747
Bicarbonate concentration as a predictor of prognosis in moderately severe COVID-19 patients: A multicenter retrospective study.35749694 · Sada, Ken-Ei, Yamamoto, Ryohei, Yano, Akihiko et al.2022 · 11 citationsPloS one. 2022;17(6):e0270141
Usefulness of low tidal volume ventilation strategy for patients with acute respiratory distress syndrome: a systematic review and meta-analysis.35660756 · Yamamoto, Ryohei, Okazaki, Satoru Robert, Fujita, Yoshihito et al.2022 · 23 citationsScientific reports. 2022;12(1):9331
Risk factors for peripheral intravascular catheter-related phlebitis in critically ill patients: analysis of 3429 catheters from 23 Japanese intensive care units.35394571 · Yasuda, Hideto, Rickard, Claire M, Marsh, Nicole et al.2026 · 35 citationsAnnals of intensive care. 2022;12(1):33
Association between timing of speech and language therapy initiation and outcomes among post-extubation dysphagia patients: a multicenter retrospective cohort study.35395802 · Hongo, Takashi, Yamamoto, Ryohei, Liu, Keibun et al.2022 · 36 citationsCritical care (London, England). 2022;26(1):98
Monitoring of gastric residual volume during enteral nutrition.34596901 · Yasuda, Hideto, Kondo, Natsuki, Yamamoto, Ryohei et al.2021 · 57 citationsThe Cochrane database of systematic reviews. 2021;9:CD013335
Diagnostic accuracy of Aspergillus-specific antibodies for chronic pulmonary aspergillosis: A systematic review and meta-analysis.33594774 · Anan, Keisuke, Kataoka, Yuki, Okabayashi, Shinji et al.2021 · 18 citationsMycoses. 2021;64(7):701-715
Occurrence and incidence rate of peripheral intravascular catheter-related phlebitis and complications in critically ill patients: a prospective cohort study (AMOR-VENUS study).33407891 · Yasuda, Hideto, Yamamoto, Ryohei, Hayashi, Yoshiro et al.2021 · 46 citationsJournal of intensive care. 2021;9(1):3
Extracorporeal membrane oxygenation may decrease the plasma concentration of remdesivir in a patient with severe coronavirus disease 2019.34804800 · Ide, Satoshi, Saito, Sho, Akazawa, Tsubasa et al.2021 · 5 citationsIDCases. 2021;26:e01343
Pharmacokinetic and pharmacodynamic considerations in antimicrobial therapy for sepsis.32238005 · Fujii, Motoki, Karumai, Toshiyuki, Yamamoto, Ryohei et al.2021 · 29 citationsExpert opinion on drug metabolism & toxicology. 2020;16(5):415-430
Intermittent Hemodialysis for Managing Metabolic Acidosis During Resuscitation of Septic Shock: A Descriptive Study.32166246 · Nogi, Kazutaka, Shiraishi, Atsushi, Yamamoto, Ryohei et al.2022 · 9 citationsCritical care explorations. 2019;1(12):e0065
Clinical Significance of Various Drug-Sensitivity Markers in Patients with Surgically Resected Pulmonary Pleomorphic Carcinoma.31653009 · Imai, Hisao, Shimizu, Kimihiro, Kawashima, Osamu et al.2020 · 5 citationsCancers. 2019;11(11)
Relationship between community walking ability and in-hospital mortality in elderly patients with sepsis: a single-center retrospective cohort study.31139418 · Ueno, Ryo, Shiraishi, Atsushi, Yamamoto, Ryohei et al.2022 · 4 citationsJournal of intensive care. 2019;7:33
Expression of amino acid transporter (LAT1 and 4F2hc) in pulmonary pleomorphic carcinoma.30300664 · Kaira, Kyoichi, Kawashima, Osamu, Endoh, Hedeki et al.2019 · 36 citationsHuman pathology. 2019;84:142-149
[An intravesical foreign body by migration of remnant gauze into the bladder: a case report].24755819 · Kashima, Soki, Yamamoto, Ryohei, Miura, Yoshiko et al.2014 · 3 citationsHinyokika kiyo. Acta urologica Japonica. 2014;60(2):83-6
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