Hiroki Nishiwaki

575 total citations
64 papers, 301 citations indexed

About

Hiroki Nishiwaki is a scholar working on Nephrology, Hematology and Surgery. According to data from OpenAlex, Hiroki Nishiwaki has authored 64 papers receiving a total of 301 indexed citations (citations by other indexed papers that have themselves been cited), including 28 papers in Nephrology, 15 papers in Hematology and 14 papers in Surgery. Recurrent topics in Hiroki Nishiwaki's work include Dialysis and Renal Disease Management (17 papers), Erythropoietin and Anemia Treatment (9 papers) and Renal Diseases and Glomerulopathies (7 papers). Hiroki Nishiwaki is often cited by papers focused on Dialysis and Renal Disease Management (17 papers), Erythropoietin and Anemia Treatment (9 papers) and Renal Diseases and Glomerulopathies (7 papers). Hiroki Nishiwaki collaborates with scholars based in Japan, United States and New Zealand. Hiroki Nishiwaki's co-authors include Takeshi Hasegawa, William Levack, Erika Ota, Tetsuya Hirata, Megumu Okada, Shinichi Kato, Shingo Fukuma, Ashio Yoshimura, Hisashi Noma and Fumihiko Koiwa and has published in prestigious journals such as Gastroenterology, PLoS ONE and American Journal of Clinical Nutrition.

In The Last Decade

Hiroki Nishiwaki

54 papers receiving 293 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Hiroki Nishiwaki Japan	11	69	60	41	40	33	64	301
Eirini Grapsa Greece	11	141 2.0×	79 1.3×	45 1.1×	30 0.8×	32 1.0×	30	372
Anwar Habib India	10	84 1.2×	64 1.1×	41 1.0×	34 0.8×	37 1.1×	30	359
Daniel Lighezan Romania	13	60 0.9×	77 1.3×	55 1.3×	58 1.4×	50 1.5×	70	510
Kazuomi Kario Japan	12	28 0.4×	68 1.1×	52 1.3×	40 1.0×	38 1.2×	18	495
Lokman Üstyol Türkiye	9	28 0.4×	32 0.5×	31 0.8×	46 1.1×	20 0.6×	22	304
Carmen D’Amore Italy	11	44 0.6×	27 0.5×	35 0.9×	31 0.8×	36 1.1×	34	298
Vida Sheikh Iran	11	48 0.7×	48 0.8×	29 0.7×	26 0.7×	26 0.8×	23	326
Hasan Kayabaşı Türkiye	12	107 1.6×	62 1.0×	22 0.5×	36 0.9×	58 1.8×	35	340
Hari Krishan Aggarwal India	8	83 1.2×	46 0.8×	16 0.4×	20 0.5×	29 0.9×	38	284
Mohammad Hossein Nikoo Iran	14	119 1.7×	85 1.4×	33 0.8×	34 0.8×	12 0.4×	64	647

Countries citing papers authored by Hiroki Nishiwaki

Since Specialization

Citations

This map shows the geographic impact of Hiroki Nishiwaki'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 Hiroki Nishiwaki with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hiroki Nishiwaki more than expected).

Fields of papers citing papers by Hiroki Nishiwaki

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hiroki Nishiwaki. 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 Hiroki Nishiwaki. The network helps show where Hiroki Nishiwaki may publish in the future.

Co-authorship network of co-authors of Hiroki Nishiwaki

This figure shows the co-authorship network connecting the top 25 collaborators of Hiroki Nishiwaki. A scholar is included among the top collaborators of Hiroki Nishiwaki 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 Hiroki Nishiwaki. Hiroki Nishiwaki 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

Hasegawa, Takeshi, Miho Murashima, Hisashi Noma, et al.. (2025). Efficacy and Safety of Phosphate-Lowering Agents for Adult Patients with CKD Requiring Dialysis. Clinical Journal of the American Society of Nephrology. 20(5). 676–696. 2 indexed citations

Imaizumi, Takahiro, Takeshi Hasegawa, Hiroki Nishiwaki, et al.. (2025). Renal anemia and hyporesponsiveness to ESA for preservation of residual kidney function in patients undergoing peritoneal dialysis. Scientific Reports. 15(1). 2689–2689.

Aoki, Takuya, Sho Sasaki, Hiroki Nishiwaki, et al.. (2025). Association between primary care physician–nephrologist collaboration and clinical outcomes in patients with stage 5 chronic kidney disease: a JOINT-KD cohort study. Journal of Nephrology. 38(5). 1385–1394.

Sofue, Tadashi, Ryota Matsuzawa, Hiroki Nishiwaki, et al.. (2024). Exercise instruction during haemodialysis treatment after changes to the insurance regime: a nationwide questionnaire survey in Japan. Scientific Reports. 14(1). 9171–9171. 1 indexed citations

Abe, Yoshifusa, Hiroki Nishiwaki, Taihei Suzuki, et al.. (2024). Renoprotective effects of coenzyme Q10 supplementation in patients with chronic kidney disease: a protocol for a systematic review. BMJ Open. 14(12). e084088–e084088. 2 indexed citations

Sasaki, Sho, Takahiro Imaizumi, Hiroki Nishiwaki, et al.. (2024). Recipients of public assistance with advanced chronic kidney disease: insights into receiving a presentation of kidney replacement therapy options and polypharmacy from Japanese investigators with innovative network about kidney disease study. Clinical and Experimental Nephrology. 29(1). 67–74. 1 indexed citations

Suzuki, Taihei, Hiroki Nishiwaki, Yoshifusa Abe, et al.. (2023). Outcomes of discontinuing renin-angiotensin system inhibitors: a study protocol for conducting systematic review and meta-analysis. BMJ Open. 13(5). e070345–e070345. 1 indexed citations

Tashiro, N., Takeshi Hasegawa, Hiroki Nishiwaki, et al.. (2023). Clinical utility of diaphragmatic ultrasonography for mechanical ventilator weaning in adults: A study protocol for systematic review and meta‐analysis. Health Science Reports. 6(7). e1378–e1378. 3 indexed citations

Shimizu, Sayaka, Masahiro Koizumi, Tadashi Sofue, et al.. (2023). Japanese clinical practice patterns of primary nephrotic syndrome 2021: a web-based questionnaire survey of certified nephrologists. Clinical and Experimental Nephrology. 27(9). 767–775. 3 indexed citations

10.

Nishiwaki, Hiroki, Yoshifusa Abe, Takeshi Hasegawa, et al.. (2022). Erythropoiesis-stimulating agents for preventing acute kidney injury. Cochrane Database of Systematic Reviews. 2022(5). 1 indexed citations

11.

Hasegawa, Takeshi, Hiroki Nishiwaki, Erika Ota, William Levack, & Hisashi Noma. (2021). Aldosterone antagonists for people with chronic kidney disease requiring dialysis. Cochrane Database of Systematic Reviews. 2021(2). 20 indexed citations

12.

Nishiwaki, Hiroki, et al.. (2021). Granulomatosis with polyangiitis in a patient with a thoracic vertebral lesion: a case report. Modern Rheumatology Case Reports. 5(2). 347–353.

13.

Sasaki, Sho, Toshihiko Takada, Shingo Fukuma, et al.. (2020). Screening tool for identifying adults with excessive salt intake among community-dwelling adults: a population-based cohort study. American Journal of Clinical Nutrition. 111(4). 814–820. 1 indexed citations

14.

Nishiwaki, Hiroki, et al.. (2019). Impact of salt taste dysfunction on interdialytic weight gain for hemodialysis patients; a cross-sectional study. BMC Nephrology. 20(1). 121–121. 6 indexed citations

15.

Nishiwaki, Hiroki, Takeshi Hasegawa, Fumihiko Koiwa, Takayuki Hamano, & Ikuto Masakane. (2019). The association of the difference in hemoglobin levels before and after hemodialysis with the risk of 1-year mortality in patients undergoing hemodialysis. Results from a nationwide cohort study of the Japanese Renal Data Registry. PLoS ONE. 14(1). e0210533–e0210533. 2 indexed citations

16.

Nishiwaki, Hiroki, Sho Sasaki, Takeshi Hasegawa, et al.. (2019). External validation of the quick Sequential Organ Failure Assessment score for mortality and bacteraemia risk evaluation in Japanese patients undergoing haemodialysis: a retrospective multicentre cohort study. BMJ Open. 9(7). e028856–e028856. 4 indexed citations

17.

Niihata, Kakuya, Hiroki Nishiwaki, Noriaki Kurita, et al.. (2019). Variations in actual practice patterns and their deviations from the clinical practice guidelines for nephrotic syndrome in Japan: certified nephrologists’ questionnaire survey. Clinical and Experimental Nephrology. 23(11). 1288–1297. 6 indexed citations

18.

Maruta, Yuichi, Takeshi Hasegawa, Hiroki Nishiwaki, et al.. (2018). Association between serum Na–Cl level and renal function decline in chronic kidney disease: results from the chronic kidney disease Japan cohort (CKD-JAC) study. Clinical and Experimental Nephrology. 23(2). 215–222. 14 indexed citations

19.

Niihata, Kakuya, Sei Takahashi, Noriaki Kurita, et al.. (2017). Association Between Accumulation of Advanced Glycation End-Products and Hearing Impairment in Community-Dwelling Older People: A Cross-Sectional Sukagawa Study. Journal of the American Medical Directors Association. 19(3). 235–239.e1. 5 indexed citations

20.

Nishiwaki, Hiroki, et al.. (1998). Influence of monochloramine on healing of acute gastric mucosal lesions in rats: Beneficial effects of polaprezinc. Gastroenterology. 114. A296–A296. 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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