Kikuko Obase

1.0k total citations
44 papers, 457 citations indexed

About

Kikuko Obase is a scholar working on Cardiology and Cardiovascular Medicine, Surgery and Epidemiology. According to data from OpenAlex, Kikuko Obase has authored 44 papers receiving a total of 457 indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Cardiology and Cardiovascular Medicine, 17 papers in Surgery and 16 papers in Epidemiology. Recurrent topics in Kikuko Obase's work include Cardiac Valve Diseases and Treatments (23 papers), Cardiovascular Function and Risk Factors (14 papers) and Infective Endocarditis Diagnosis and Management (13 papers). Kikuko Obase is often cited by papers focused on Cardiac Valve Diseases and Treatments (23 papers), Cardiovascular Function and Risk Factors (14 papers) and Infective Endocarditis Diagnosis and Management (13 papers). Kikuko Obase collaborates with scholars based in Japan and United States. Kikuko Obase's co-authors include Kiyoshi Yoshida, Hiroyuki Okura, Yoji Neishi, Akihiro Hayashida, Takahiro Kawamoto, Ken Saito, Nozomi Watanabe, Koichiro Imai, Tomoko Tamada and Noriko Okahashi and has published in prestigious journals such as Circulation, The American Journal of Cardiology and Journal of Thoracic and Cardiovascular Surgery.

In The Last Decade

Kikuko Obase

39 papers receiving 438 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Kikuko Obase Japan	9	397	186	141	102	51	44	457
Paolo Caravelli Italy	9	274 0.7×	79 0.4×	89 0.6×	47 0.5×	65 1.3×	24	308
Youssef F.M. Nosir Saudi Arabia	11	415 1.0×	215 1.2×	125 0.9×	152 1.5×	59 1.2×	29	478
Hany Awadalla United States	8	187 0.5×	130 0.7×	179 1.3×	35 0.3×	85 1.7×	17	277
Ellen Ostenfeld Sweden	13	403 1.0×	143 0.8×	84 0.6×	93 0.9×	217 4.3×	56	510
Herman F.J. Mannaerts Netherlands	10	334 0.8×	153 0.8×	97 0.7×	82 0.8×	26 0.5×	15	392
Lee Fong Ling United States	6	263 0.7×	141 0.8×	103 0.7×	114 1.1×	109 2.1×	12	344
Alberto Massoni Italy	4	413 1.0×	143 0.8×	78 0.6×	54 0.5×	141 2.8×	6	445
Siham Lazam Belgium	6	289 0.7×	156 0.8×	87 0.6×	114 1.1×	46 0.9×	7	314
Yasuhiro Ichibori Japan	10	232 0.6×	39 0.2×	69 0.5×	146 1.4×	53 1.0×	36	301
W.Richard Cashion United States	8	278 0.7×	192 1.0×	181 1.3×	32 0.3×	67 1.3×	9	377

Countries citing papers authored by Kikuko Obase

Since Specialization

Citations

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

Fields of papers citing papers by Kikuko Obase

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kikuko Obase

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

Obase, Kikuko, et al.. (2025). Arrested Embryonic Development of the Mitral Valve: A Rare Case of Congenital Mitral Stenosis Unveiled Through Multimodal Imaging. Heart Lung and Circulation. 34(2). e27–e29. 1 indexed citations

Taguchi, Hiroko, et al.. (2021). Mitral endocarditis in hypertrophic obstructive cardiomyopathy with leaflet perforation. General Thoracic and Cardiovascular Surgery. 69(6). 1000–1003. 1 indexed citations

Obase, Kikuko, et al.. (2021). Left ventricular outflow tract obstruction related to systolic anterior motion of anomalous secondary chords. European Journal of Cardio-Thoracic Surgery. 60(5). 1239–1239. 1 indexed citations

Iwata, Yusuke, Takamasa Takeuchi, Takeshi Konuma, Kikuko Obase, & Kiyoyuki Eishi. (2021). Infant coronary artery bypass grafting completely under surgical microscope. JTCVS Techniques. 10. 441–443.

Miura, Takashi, et al.. (2020). Very long-term outcomes of twisted auto-pericardial mitral annuloplasty. General Thoracic and Cardiovascular Surgery. 68(10). 1113–1118. 1 indexed citations

Inoue, Taku, et al.. (2017). Valve-sparing aortic root re-implantation for commissural detachment with fibrous strand. General Thoracic and Cardiovascular Surgery. 66(1). 54–56. 3 indexed citations

Obase, Kikuko, Karima Addetia, K Takahashi, et al.. (2016). Double-Orifice Tricuspid Valve Visualized by Three-Dimensional Transthoracic Echocardiography. Journal of Cardiovascular Ultrasound. 24(3). 253–253. 1 indexed citations

Obase, Kikuko, Lynn Weinert, J. Devin Roberts, et al.. (2015). Elongation of chordae tendineae as an adaptive process to reduce mitral regurgitation in functional mitral regurgitation. European Heart Journal - Cardiovascular Imaging. 17(5). 500–509. 15 indexed citations

Obase, Kikuko, Lynn Weinert, J. Devin Roberts, et al.. (2015). Leaflet-Chordal Relations in Patients with Primary and Secondary Mitral Regurgitation. Journal of the American Society of Echocardiography. 28(11). 1302–1308. 3 indexed citations

10.

Obase, Kikuko, Lynn Weinert, Karima Addetia, et al.. (2014). Abstract 19024: Differences in Mitral Valve Marginal Chordae Tendineae Length in Patients with Functional and Degenerative Mitral Regurgitation Using 3D Transesophageal Echocardiography from the Transgastric Approach. Circulation. 1 indexed citations

11.

Kobayashi, Yukari, Hiroyuki Okura, Keisuke Okawa, et al.. (2014). Assessment of Atrial Synchrony in Paroxysmal Atrial Fibrillation and Impact of Pulmonary Vein Isolation for Atrial Dyssynchrony and Global Strain by Three-Dimensional Strain Echocardiography. Journal of the American Society of Echocardiography. 27(11). 1193–1199. 20 indexed citations

12.

Saito, Ken, Hiroyuki Okura, Nozomi Watanabe, et al.. (2012). Influence of Chronic Tethering of the Mitral Valve on Mitral Leaflet Size and Coaptation in Functional Mitral Regurgitation. JACC. Cardiovascular imaging. 5(4). 337–345. 48 indexed citations

13.

Yamaura, Yasuko, Kikuko Obase, Nozomi Watanabe, et al.. (2012). A rare case of impending paradoxical embolism with a complex patent foramen ovale. Journal of Echocardiography. 10(4). 138–140. 1 indexed citations

14.

Obase, Kikuko, Masashi Komeda, Hiroyuki Okura, & Kiyoshi Yoshida. (2012). A new echocardiographic window to visualize the mitral valve complex during mitral valve repair for functional mitral regurgitation. Journal of Thoracic and Cardiovascular Surgery. 143(5). e42–e44. 4 indexed citations

15.

Yamaura, Yasuko, Nozomi Watanabe, Kikuko Obase, et al.. (2010). Relation between progression of aortic valve sclerosis and carotid intima–media thickening in asymptomatic subjects with cardiovascular risk factors. Journal of Echocardiography. 8(3). 87–93. 2 indexed citations

16.

Okura, Hiroyuki, Koichiro Imai, Ryotaro Yamada, et al.. (2010). Usefulness of CHADS2 Score to Predict C-Reactive Protein, Left Atrial Blood Stasis, and Prognosis in Patients With Nonrheumatic Atrial Fibrillation. The American Journal of Cardiology. 106(4). 535–538. 34 indexed citations

17.

Miyamoto, Yoshinori, Hiroyuki Okura, Teruyoshi Kume, et al.. (2010). Coronary microvascular endothelial function deteriorates late (12 months) after sirolimus-eluting stent implantation. Journal of Cardiology. 56(2). 229–235. 3 indexed citations

18.

Saito, Ken, Hiroyuki Okura, Nozomi Watanabe, et al.. (2009). Comprehensive Evaluation of Left Ventricular Strain Using Speckle Tracking Echocardiography in Normal Adults: Comparison of Three-Dimensional and Two-Dimensional Approaches. Journal of the American Society of Echocardiography. 22(9). 1025–1030. 194 indexed citations

19.

Imai, Koichiro, Nozomi Watanabe, Akihiro Hayashida, et al.. (2009). Sinus of Valsalva dilates disproportionately in aortic root aneurysm with moderate to severe aortic regurgitation: quantitative assessment by transesophageal echocardiography. Journal of Echocardiography. 7(3). 41–47. 2 indexed citations

20.

Ikeda, Satoshi, et al.. (1999). Decreasing the Pressure Gradient of the Left Ventricular Outflow Tract by Single-lead VDD Pacing in a Patient with Hypertrophic Obstructive Cardiomyopathy. Nagasaki University's Academic Output SITE (Nagasaki University). 44(3). 61–66.

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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