Zen’ichiro Wajima

2.9k total citations · 2 hit papers
67 papers, 2.0k citations indexed

About

Zen’ichiro Wajima is a scholar working on Surgery, Cardiology and Cardiovascular Medicine and Anesthesiology and Pain Medicine. According to data from OpenAlex, Zen’ichiro Wajima has authored 67 papers receiving a total of 2.0k indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Surgery, 26 papers in Cardiology and Cardiovascular Medicine and 23 papers in Anesthesiology and Pain Medicine. Recurrent topics in Zen’ichiro Wajima's work include Anesthesia and Sedative Agents (20 papers), Cardiac, Anesthesia and Surgical Outcomes (14 papers) and Anesthesia and Pain Management (13 papers). Zen’ichiro Wajima is often cited by papers focused on Anesthesia and Sedative Agents (20 papers), Cardiac, Anesthesia and Surgical Outcomes (14 papers) and Anesthesia and Pain Management (13 papers). Zen’ichiro Wajima collaborates with scholars based in Japan and United States. Zen’ichiro Wajima's co-authors include Toshiya Shiga, Tetsuo Inoue, Yoko Ohe, Atsuhiro Sakamoto, Christian C. Apfel, Ryo Ogawa, Akira Ogura, Ryo Ogawa, T. Inoue and Ryo Ogawa and has published in prestigious journals such as Brain Research, The American Journal of Medicine and Critical Care Medicine.

In The Last Decade

Zen’ichiro Wajima

64 papers receiving 1.9k citations

Hit Papers

2 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.

Predicting Difficult Intubation in Apparently Normal Patients

2005 589 citations Toshiya Shiga, Zen’ichiro Wajima et al. profile →
Is operative delay associated with increased mortality of hip fracture patients? Systematic review, meta-analysis, and meta-regression

2008 503 citations Toshiya Shiga, Zen’ichiro Wajima et al. Canadian Journal of Anesthesia/Journal canadien d anesthésie profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Zen’ichiro Wajima Japan	16	931	859	749	721	227	67	2.0k
Toshiya Shiga Japan	18	925 1.0×	890 1.0×	916 1.2×	864 1.2×	264 1.2×	79	2.2k
M. Ramez Salem United States	26	559 0.6×	475 0.6×	717 1.0×	959 1.3×	267 1.2×	109	2.0k
E. Andrew Ochroch United States	28	1.1k 1.2×	463 0.5×	984 1.3×	1.2k 1.7×	282 1.2×	69	2.3k
J. P. Mulier Belgium	19	989 1.1×	645 0.8×	480 0.6×	553 0.8×	105 0.5×	76	1.7k
J. Fusciardi France	21	902 1.0×	357 0.4×	667 0.9×	769 1.1×	208 0.9×	83	1.7k
Marco Berti Italy	31	1.9k 2.0×	943 1.1×	283 0.4×	866 1.2×	377 1.7×	101	3.1k
Greger Olsson Sweden	16	664 0.7×	486 0.6×	382 0.5×	663 0.9×	119 0.5×	38	1.4k
Hans‐Joachim Priebe Germany	23	665 0.7×	573 0.7×	547 0.7×	443 0.6×	85 0.4×	84	1.5k
T. Möllhoff Germany	23	1.1k 1.2×	808 0.9×	350 0.5×	363 0.5×	94 0.4×	69	1.8k
Cyrus Motamed France	18	661 0.7×	298 0.3×	364 0.5×	940 1.3×	125 0.6×	79	1.4k

Countries citing papers authored by Zen’ichiro Wajima

Since Specialization

Citations

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

Fields of papers citing papers by Zen’ichiro Wajima

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Zen’ichiro Wajima. 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 Zen’ichiro Wajima. The network helps show where Zen’ichiro Wajima may publish in the future.

Co-authorship network of co-authors of Zen’ichiro Wajima

This figure shows the co-authorship network connecting the top 25 collaborators of Zen’ichiro Wajima. A scholar is included among the top collaborators of Zen’ichiro Wajima 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 Zen’ichiro Wajima. Zen’ichiro Wajima 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

Wajima, Zen’ichiro, et al.. (2018). Bolus administration of ephedrine and etilefrine induces transient vasodilation just after injection in combined epidural and general anesthesia patients: A randomized clinical study. BioScience Trends. 12(4). 382–388. 5 indexed citations

Wajima, Zen’ichiro, et al.. (2017). Subarachnoid Block-Induced Deafferentation Pain Successfully Treated with Pentazocine. Journal of Nippon Medical School. 84(4). 183–185. 5 indexed citations

Wajima, Zen’ichiro, et al.. (2015). Does intravenous atropine affect stroke volume variation in man?. Acta anaesthesiologica Taiwanica. 53(3). 85–88. 1 indexed citations

Wajima, Zen’ichiro, et al.. (2014). Pneumoperitoneum affects stroke volume variation in humans. Journal of Anesthesia. 29(4). 508–514. 12 indexed citations

Wajima, Zen’ichiro, et al.. (2011). Intravenous landiolol, a novel β1-adrenergic blocker, reduces the minimum alveolar concentration of sevoflurane in women. Journal of Clinical Anesthesia. 23(4). 292–296. 9 indexed citations

Wajima, Zen’ichiro, et al.. (2010). Prophylactic continuous administration of landiolol, a novel β₁blocker, blunts hyperdynamic responses during electroconvulsive therapy without altering seizure activity. International Journal of Psychiatry in Clinical Practice. 14(2). 132–136. 6 indexed citations

Wajima, Zen’ichiro. (2006). Future Possibilities for the Clinical Use of β1-blockers. THE JOURNAL OF JAPAN SOCIETY FOR CLINICAL ANESTHESIA. 26(4). 398–403.

Shiga, Toshiya, Zen’ichiro Wajima, Tetsuo Inoue, & Ryo Ogawa. (2004). Magnesium prophylaxis for arrhythmias after cardiac surgery: A meta-analysis of randomized controlled trials. The American Journal of Medicine. 117(5). 325–333. 82 indexed citations

Shiga, Toshiya, Zen’ichiro Wajima, Tetsuo Inoue, & Ryo Ogawa. (2004). Prophylactic nebulized lidocaine attenuates hyperdynamic response to abrupt mask inhalation of isoflurane in adults. Journal of Clinical Anesthesia. 16(7). 493–498.

10.

Wajima, Zen’ichiro, et al.. (2003). Intravenous Alprostadil, an Analog of Prostaglandin E1, Prevents Thiamylal-Fentanyl-Induced Bronchoconstriction in Humans. Anesthesia & Analgesia. 97(2). 456–460. 4 indexed citations

11.

Wajima, Zen’ichiro, et al.. (2002). Oral Tizanidine, an α2-Adrenoceptor Agonist, Reduces the Minimum Alveolar Concentration of Sevoflurane in Human Adults. Anesthesia & Analgesia. 95(2). 393–396. 9 indexed citations

12.

Yoshikawa, Takaki, Zen’ichiro Wajima, Akira Ogura, T. Inoue, & Ryo Ogawa. (2001). Orally administered clonidine significantly reduces pain during injection of propofol. British Journal of Anaesthesia. 86(6). 874–876. 10 indexed citations

13.

Wajima, Zen’ichiro, Xiao‐Ying Hua, & Tony L. Yaksh. (2000). Inhibition of spinal protein kinase C blocks substance P-mediated hyperalgesia. Brain Research. 877(2). 314–321. 31 indexed citations

14.

Wajima, Zen’ichiro, et al.. (2000). Thoracoscopic lung biopsy in a patient with pulmonary lymphangiomyomatosis. Canadian Journal of Anesthesia/Journal canadien d anesthésie. 47(1). 62–64. 1 indexed citations

15.

Wajima, Zen’ichiro, H Adachi, Gen Ishikawa, et al.. (1997). Continuous brachial plexus infusion of butorphanol-mepivacaine mixtures for analgesia after upper extremity surgery. British Journal of Anaesthesia. 78(1). 83–85. 19 indexed citations

16.

Wajima, Zen’ichiro, et al.. (1996). Dobutamine Infusion Modifies Thermoregulation During General Anesthesia. Anesthesia & Analgesia. 83(6). 1154–1159. 15 indexed citations

17.

Wajima, Zen’ichiro, et al.. (1995). Comparison of continuous brachial plexus infusion of butorphanol, mepivacaine and mepivacaine-butorphanol mixtures for postoperative analgesia. British Journal of Anaesthesia. 75(5). 548–551. 25 indexed citations

18.

Wajima, Zen’ichiro, et al.. (1995). I.v. compared with brachial plexus infusion of butorphanol for postoperative analgesia. British Journal of Anaesthesia. 74(4). 392–395. 27 indexed citations

19.

Wajima, Zen’ichiro, Sonoko Harada, Y. Nakajima, et al.. (1995). [A case of atopic dermatitis treated with stellate ganglion block--the change of serum IgE and blood eosinophil levels].. PubMed. 44(8). 1135–8. 4 indexed citations

20.

Wajima, Zen’ichiro, Tetsuo Inoue, & Ryo Ogawa. (1993). The effects of butorphanol on baroreflex control of heart rate in man. Journal of Anesthesia. 7(4). 411–418. 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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