Kei Ouchi

3.5k total citations · 1 hit paper
94 papers, 2.3k citations indexed

About

Kei Ouchi is a scholar working on Public Health, Environmental and Occupational Health, Emergency Medicine and Radiological and Ultrasound Technology. According to data from OpenAlex, Kei Ouchi has authored 94 papers receiving a total of 2.3k indexed citations (citations by other indexed papers that have themselves been cited), including 59 papers in Public Health, Environmental and Occupational Health, 30 papers in Emergency Medicine and 29 papers in Radiological and Ultrasound Technology. Recurrent topics in Kei Ouchi's work include Palliative Care and End-of-Life Issues (56 papers), Family and Patient Care in Intensive Care Units (29 papers) and Emergency and Acute Care Studies (28 papers). Kei Ouchi is often cited by papers focused on Palliative Care and End-of-Life Issues (56 papers), Family and Patient Care in Intensive Care Units (29 papers) and Emergency and Acute Care Studies (28 papers). Kei Ouchi collaborates with scholars based in United States, Japan and United Kingdom. Kei Ouchi's co-authors include Georg M. Lauer, Bruce D. Walker, Arthur Y. Kim, Raymond T. Chung, Paul Klenerman, Michaela Lucas, Jörg Timm, Naomi George, Cheryl L. Day and Todd M. Allen and has published in prestigious journals such as The Journal of Experimental Medicine, SHILAP Revista de lepidopterología and Blood.

In The Last Decade

Kei Ouchi

83 papers receiving 2.3k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Hospital-Level Care at Home for Acutely Ill Adults

2019 239 citations David M. Levine, Kei Ouchi et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Kei Ouchi United States	23	819	717	625	436	358	94	2.3k
Rose Baker United States	15	238 0.3×	223 0.3×	1.0k 1.7×	143 0.3×	55 0.2×	19	2.3k
Colm Bergin Ireland	26	641 0.8×	295 0.4×	1.1k 1.8×	250 0.6×	173 0.5×	154	3.1k
Tony Brady United Kingdom	25	91 0.1×	167 0.2×	960 1.5×	203 0.5×	65 0.2×	48	3.4k
Ghislaine Leleu France	16	33 0.0×	618 0.9×	1.0k 1.6×	183 0.4×	310 0.9×	22	2.3k
A. Marshall McBean United States	30	62 0.1×	382 0.5×	1.2k 2.0×	567 1.3×	101 0.3×	70	4.3k
Sarah Schillie United States	26	1.7k 2.1×	204 0.3×	2.0k 3.3×	127 0.3×	126 0.4×	55	2.7k
Kathleen M. Akgün United States	23	36 0.0×	308 0.4×	717 1.1×	170 0.4×	24 0.1×	105	2.0k
Marc Kowalkowski United States	23	116 0.1×	162 0.2×	392 0.6×	337 0.8×	15 0.0×	91	1.5k
Paolo Bonfanti Italy	26	116 0.1×	62 0.1×	437 0.7×	56 0.1×	75 0.2×	140	2.3k
Simon Nadel United Kingdom	38	24 0.0×	596 0.8×	2.1k 3.4×	145 0.3×	404 1.1×	134	4.2k

Countries citing papers authored by Kei Ouchi

Since Specialization

Citations

This map shows the geographic impact of Kei Ouchi's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Kei Ouchi with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kei Ouchi more than expected).

Fields of papers citing papers by Kei Ouchi

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kei Ouchi. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Kei Ouchi. The network helps show where Kei Ouchi may publish in the future.

Co-authorship network of co-authors of Kei Ouchi

This figure shows the co-authorship network connecting the top 25 collaborators of Kei Ouchi. A scholar is included among the top collaborators of Kei Ouchi based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Kei Ouchi. Kei Ouchi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Chary, Anita, et al.. (2025). Cognitive Interviews With Emergency Physicians to Understand Disposition Decisions With People With Dementia With Borderline Cases. Journal of Applied Gerontology. 45(2). 207–212. 1 indexed citations

Ouchi, Kei, et al.. (2025). Neuropalliative Care in the Emergency Department: Three Roles, One Goal. Neurocritical Care. 44(1). 315–321.

Ouchi, Kei, et al.. (2025). Comparing approaches to code status conversations between Thai and American emergency clinicians: a survey study. Emergency Medicine Journal. 42(9). 572–578.

Numata, Kenji, Shigeki Fujitani, Hiraku Funakoshi, et al.. (2024). Differences in code status practice patterns among emergency clinicians working in Japan and the United States. Patient Education and Counseling. 128. 108368–108368.

Higuchi, Masaya, et al.. (2024). Palliative care screening tools in Japan: cross-sectional utility study. BMJ Supportive & Palliative Care. 14(e3). e2500–e2503.

Yusufov, Miryam, Oluwaseun Adeyemi, Jean‐Baptiste Bouillon‐Minois, et al.. (2023). Psychometric Properties of the Functional Assessment of Cancer Therapy-General for Evaluating Quality of Life in Patients With Life-Limiting Illness in the Emergency Department. Journal of Palliative Medicine. 27(1). 63–74. 1 indexed citations

Rowe, Katherine, et al.. (2023). Preparing Preclinical Medical Students for Routine Code Status Discussions: A Mixed-Methods Study. Journal of Pain and Symptom Management. 67(2). 138–146.

Yoshioka, Masaki, Masahiro Matsui, Kei Ouchi, et al.. (2023). Effects of lactotripeptide ingestion and physical activity intervention on the fatigue status of middle-aged and older adults: a randomized controlled trial. Scientific Reports. 13(1). 15736–15736.

George, Naomi, et al.. (2023). Best Practices in End of Life and Palliative Care in the Emergency Department. Clinics in Geriatric Medicine. 39(4). 575–597. 7 indexed citations

10.

Hasdianda, Mohammad Adrian, Tamryn F. Gray, Emily L. Aaronson, et al.. (2022). Refinement of an Emergency Department-Based, Advance Care Planning Intervention for Nurses. Journal of Palliative Medicine. 25(4). 650–655. 5 indexed citations

11.

Aaronson, Emily L., Rebecca Wright, Christine S. Ritchie, et al.. (2022). Mapping the future for research in emergency medicine palliative care: A research roadmap. Academic Emergency Medicine. 29(8). 963–973. 4 indexed citations

12.

Ouchi, Kei, et al.. (2021). Home hospital as a disposition for older adults from the emergency department: Benefits and opportunities. SHILAP Revista de lepidopterología. 2(4). e12517–e12517. 22 indexed citations

13.

Landry, Adaira & Kei Ouchi. (2020). Story of human connection. Emergency Medicine Journal. emermed–2020. 5 indexed citations

14.

Nakagawa, Shunichi, et al.. (2020). Physicians’ Perceptions and Suggestions for the Adaptation of a US-Based Serious Illness Communication Training in a Non-US Culture: A Qualitative Study. Journal of Pain and Symptom Management. 62(2). 400–409.e3. 15 indexed citations

15.

Leiter, Richard E., Miryam Yusufov, Mohammad Adrian Hasdianda, et al.. (2018). Fidelity and Feasibility of a Brief Emergency Department Intervention to Empower Adults With Serious Illness to Initiate Advance Care Planning Conversations. Journal of Pain and Symptom Management. 56(6). 878–885. 23 indexed citations

16.

Melady, Don, et al.. (2018). White Paper—Geriatric Emergency Medicine Education: Current State, Challenges, and Recommendations to Enhance the Emergency Care of Older Adults. AEM Education and Training. 2(S1). S5–S16. 25 indexed citations

17.

Uchida, Toshihiro, Kihei Terada, & Kei Ouchi. (2009). Evaluation of the new EIA kit for detection of anti-mumps IgM antibody.. 35(2). 139–145. 1 indexed citations

18.

Lauer, Georg M., Michaela Lucas, Jörg Timm, et al.. (2005). Full-Breadth Analysis of CD8 ⁺ T-Cell Responses in Acute Hepatitis C Virus Infection and Early Therapy. Journal of Virology. 79(20). 12979–12988. 85 indexed citations

19.

Lauer, Georg M., Eleanor Barnes, Michaela Lucas, et al.. (2004). High resolution analysis of cellular immune responses in resolved and persistent hepatitis C virus infection. Gastroenterology. 127(3). 924–936. 241 indexed citations

20.

Lauer, Gerhard, Daniel G. Kavanagh, Kei Ouchi, et al.. (2004). CTL epitope escape and reversion in acute HCV infection.. Hepatology. 40. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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