Hitoshi Okabayashi

1.5k total citations
77 papers, 884 citations indexed

About

Hitoshi Okabayashi is a scholar working on Cardiology and Cardiovascular Medicine, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Hitoshi Okabayashi has authored 77 papers receiving a total of 884 indexed citations (citations by other indexed papers that have themselves been cited), including 48 papers in Cardiology and Cardiovascular Medicine, 39 papers in Surgery and 35 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Hitoshi Okabayashi's work include Cardiac Valve Diseases and Treatments (21 papers), Aortic Disease and Treatment Approaches (20 papers) and Cardiac and Coronary Surgery Techniques (16 papers). Hitoshi Okabayashi is often cited by papers focused on Cardiac Valve Diseases and Treatments (21 papers), Aortic Disease and Treatment Approaches (20 papers) and Cardiac and Coronary Surgery Techniques (16 papers). Hitoshi Okabayashi collaborates with scholars based in Japan, Pakistan and United States. Hitoshi Okabayashi's co-authors include Ryuzo Sakata, Michiya Hanyu, Takeshi Kimura, Tatsuhiko Komiya, Yoshiharu Soga, Takehiko Matsuo, Takuya Nomoto, Kenji Minatoya, Hiroyuki Niinuma and Masashi Kai and has published in prestigious journals such as Circulation, Journal of neurosurgery and The American Journal of Cardiology.

In The Last Decade

Hitoshi Okabayashi

74 papers receiving 852 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hitoshi Okabayashi Japan 18 591 497 331 156 103 77 884
Matteo Trezzi Italy 15 376 0.6× 298 0.6× 221 0.7× 283 1.8× 69 0.7× 61 718
Stephen D. Clements United States 20 739 1.3× 406 0.8× 249 0.8× 213 1.4× 303 2.9× 59 1.0k
Christopher Glover Canada 16 481 0.8× 255 0.5× 175 0.5× 151 1.0× 98 1.0× 60 802
Martin Breuer Germany 13 595 1.0× 513 1.0× 165 0.5× 85 0.5× 192 1.9× 46 827
Román Arnold Spain 18 887 1.5× 476 1.0× 301 0.9× 274 1.8× 159 1.5× 59 1.2k
Bülent Mutlu Türkiye 17 699 1.2× 224 0.5× 240 0.7× 162 1.0× 133 1.3× 90 891
Michael D. Pettersen United States 8 499 0.8× 205 0.4× 313 0.9× 445 2.9× 117 1.1× 22 857
Jesús G. Mirelis Spain 17 741 1.3× 209 0.4× 431 1.3× 146 0.9× 240 2.3× 42 996
Sonia Bernazzali Italy 14 650 1.1× 347 0.7× 238 0.7× 114 0.7× 218 2.1× 49 920
Ettore Vitali Italy 16 796 1.3× 515 1.0× 317 1.0× 295 1.9× 86 0.8× 65 1.2k

Countries citing papers authored by Hitoshi Okabayashi

Since Specialization
Citations

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

Fields of papers citing papers by Hitoshi Okabayashi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hitoshi Okabayashi

This figure shows the co-authorship network connecting the top 25 collaborators of Hitoshi Okabayashi. A scholar is included among the top collaborators of Hitoshi Okabayashi 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 Hitoshi Okabayashi. Hitoshi Okabayashi is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Tsubota, Hideki, et al.. (2025). Pulsatile cardiopulmonary bypass using a centrifugal pump reduces acute kidney injury after cardiac surgery: a propensity score-matched analysis. General Thoracic and Cardiovascular Surgery. 73(10). 742–750.
2.
Nakane, Takeichiro, et al.. (2021). Inhaled nitric oxide improves pulmonary hypertension and organ functions after adult heart valve surgeries. General Thoracic and Cardiovascular Surgery. 69(12). 1519–1526. 4 indexed citations
3.
4.
5.
Koizumi, Junichi, Tomoyuki Iwase, Takeshi Kamada, et al.. (2015). Artery Fistula Causing Aortic Regurgitation in Pulmonary Atresia With Ventricular Septal Defect and Major Aortopulmonary Collateral Arteries. The Annals of Thoracic Surgery. 99(5). e121–e123. 4 indexed citations
6.
Iwase, Tomoyuki, et al.. (2015). Repair of a simple total anomalous pulmonary venous connection coexisting with a persistent left superior vena cava. Interactive Cardiovascular and Thoracic Surgery. 21(6). ivv250–ivv250. 1 indexed citations
7.
Tazaki, Junichi, Takeshi Morimoto, Ryuzo Sakata, et al.. (2014). Impact of statin therapy on patients with coronary heart disease and aortic aneurysm or dissection. Journal of Vascular Surgery. 60(3). 604–612.e2. 11 indexed citations
8.
9.
Marui, Akira, Hitoshi Okabayashi, Tatsuhiko Komiya, et al.. (2012). Benefits of Off-Pump Coronary Artery Bypass Grafting in High-Risk Patients. Circulation. 126(11_suppl_1). S151–7. 56 indexed citations
10.
Yoshida, Kenji, Kuniaki Ogasawara, Masakazu Kobayashi, et al.. (2010). Scar formation in the carotid sheath identified during carotid endarterectomy in patients with previous cardiac surgery: significance of history of intraoperative Swan-Ganz catheter insertion. Journal of neurosurgery. 113(4). 885–889. 7 indexed citations
11.
Nakai, Kenji, Shin Takahashi, Atsushi Suzuki, et al.. (2010). Novel algorithm for identifying T-wave current density alternans using synthesized 187-channel vector-projected body surface mapping. Heart and Vessels. 26(2). 160–167. 4 indexed citations
12.
Koizumi, Junichi, et al.. (2009). A Case Report of Left Ventricular Pseudo-false Aneurysm after Myocardial Infarction. Japanese Journal of Cardiovascular Surgery. 38(2). 110–113. 3 indexed citations
13.
Kai, Masashi, Michiya Hanyu, Yoshiharu Soga, et al.. (2008). Midterm patency rate after saphenous vein grafting with a PAS-Port device. Journal of Thoracic and Cardiovascular Surgery. 137(2). 503–504. 6 indexed citations
14.
Nakai, Kenji, Takanori Oka, Hitoshi Okabayashi, et al.. (2007). Three-dimensional spectral map of atrial fibrillation by a 64-channel magnetocardiogram. Journal of Electrocardiology. 41(2). 123–130. 9 indexed citations
15.
Okabayashi, Hitoshi, Michiya Hanyu, Yoshiharu Soga, et al.. (2005). Early and midterm patency of the proximal anastomoses of saphenous vein grafts made with a Symmetry Aortic Connector System. Journal of Thoracic and Cardiovascular Surgery. 130(4). 1028–1031. 9 indexed citations
16.
Okabayashi, Hitoshi, Michiya Hanyu, Satoshi Kono, et al.. (2004). Early Results and Problems with St. Jude Medical Symmetry Bypass System in Japan. Asian Cardiovascular and Thoracic Annals. 12(3). 236–238.
17.
Minatoya, Kenji, et al.. (2000). Intermittent antegrade warm blood cardioplegia for CABG: extended interval of cardioplegia. The Annals of Thoracic Surgery. 69(1). 74–76. 13 indexed citations
18.
Soga, Yoshiharu, et al.. (1999). Plastic surgical reconstruction of left main coronary artery. The Japanese Journal of Thoracic and Cardiovascular Surgery. 47(3). 95–98. 4 indexed citations
19.
Minatoya, Kenji, Hitoshi Okabayashi, Ichiro Shimada, et al.. (1996). Pathologic aspects of polytetrafluoroethylene sutures in human heart. The Annals of Thoracic Surgery. 61(3). 883–887. 16 indexed citations
20.
Nishina, Takeshi, et al.. (1993). Retroperitoneal Approach to Abdominal Aortic Aneurysms.. Japanese Journal of Cardiovascular Surgery. 22(4). 319–321. 3 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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