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K. Ashihara · SciRah

Researcher profile · Semantic Scholar

K. Ashihara

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K. Ashihara — researcher profile on SciRah

h-index: 15
Works: 58
Citations: 932

Most-cited papers

JCS/JSCS/JATS/JSVS 2020 Guidelines on the Management of Valvular Heart Disease.
C. Izumi, K. Eishi, K. Ashihara, T. Arita +30 more
2020Circulation Journal231 citations Open access
Semantic Scholar
JCS 2017 Guideline on Prevention and Treatment of Infective Endocarditis.
S. Nakatani, T. Ohara, K. Ashihara, C. Izumi +20 more
2019Circulation Journal127 citations Open access
Semantic Scholar
Correlation between left atrial appendage morphology and flow velocity in patients with paroxysmal atrial fibrillation.
Keiko Fukushima, Noritoshi Fukushima, Ken-ichi Kato, Koichiro Ejima +9 more
2015European Heart Journal-Cardiovascular Imaging98 citations
Semantic Scholar
Impact of an Empiric Isolation of the Superior Vena Cava in Addition to Circumferential Pulmonary Vein Isolation on the Outcome of Paroxysmal Atrial Fibrillation Ablation.
Koichiro Ejima, Ken-ichi Kato, Y. Iwanami, R. Henmi +7 more
2015American Journal of Cardiology53 citations
Semantic Scholar
Prevalence, clinical characteristics, and outcome of atrial functional mitral regurgitation in hospitalized heart failure patients with atrial fibrillation.
Chihiro Saito, Y. Minami, Kotaro Arai, Shintaro Haruki +4 more
2018Journal of Cardiology48 citations Open access
Semantic Scholar
Brain natriuretic peptide in acute ischemic stroke.
K. Maruyama, T. Shiga, M. Iijima, Saori Moriya +6 more
2014Journal of Stroke & Cerebrovascular Diseases45 citations
Semantic Scholar
Guideline on Prevention and Treatment of Infective Endocarditis
S. Nakatani, T. Ohara, K. Ashihara, C. Izumi +20 more
201932 citations
Semantic Scholar
Enlarged left atrium and sudden death risk in hypertrophic cardiomyopathy patients with or without atrial fibrillation.
Y. Minami, Shintaro Haruki, B. Yashiro, Tsuyoshi Suzuki +2 more
2016Journal of Cardiology31 citations Open access
Semantic Scholar
Left Atrial Appendage Flow Velocity and Time from P‐Wave Onset to Tissue Doppler–Derived A' Predict Atrial Fibrillation Recurrence after Radiofrequency Catheter Ablation
Keiko Fukushima, Noritoshi Fukushima, Koichiro Ejima, Ken-ichi Kato +8 more
2015Echocardiography31 citations
Semantic Scholar
Impact of diastolic dysfunction on the outcome of catheter ablation in patients with atrial fibrillation.
Koichiro Ejima, M. Shoda, Kotaro Arai, A. Suzuki +7 more
2013International Journal of Cardiology30 citations
Semantic Scholar
Impact of atrial remodeling on the outcome of radiofrequency catheter ablation of paroxysmal atrial fibrillation.
Koichiro Ejima, Ken-ichi Kato, Kotaro Arai, Keiko Fukushima +10 more
2014Circulation Journal29 citations Open access
Semantic Scholar
Usefulness of tissue Doppler echocardiography to predict perioperative cardiac events in patients undergoing noncardiac surgery
Sonoko Saito, A. Takagi, F. Kurokawa, K. Ashihara +1 more
2012Heart and Vessels21 citations
Semantic Scholar
Long-term outcome and preprocedural predictors of atrial tachyarrhythmia recurrence following pulmonary vein antrum isolation-based catheter ablation in patients with non-paroxysmal atrial fibrillation.
Koichiro Ejima, Kotaro Arai, Tsuyoshi Suzuki, Ken-ichi Kato +10 more
2014Journal of Cardiology20 citations Open access
Semantic Scholar
Clinical features of the systolic anterior motion of the mitral valve among patients without hypertrophic cardiomyopathy.
Shoko Uematsu, A. Takaghi, Y. Imamura, K. Ashihara +1 more
2017Journal of Cardiology16 citations Open access
Semantic Scholar
Catheter ablation of atrial fibrillation in patients with severely impaired left ventricular systolic function
Ken-ichi Kato, Koichiro Ejima, Noritoshi Fukushima, Makoto Ishizawa +10 more
2016Heart and Vessels16 citations
Semantic Scholar
Association of elevated pulmonary artery systolic pressure with stroke and systemic embolic events in patients with hypertrophic cardiomyopathy.
K. Kanbayashi, Y. Minami, Shintaro Haruki, Ryozo Maeda +3 more
2017International Journal of Cardiology15 citations
Semantic Scholar
Large mitral valve aneurysm with infective endocarditis
Shoko Uematsu, K. Ashihara, H. Tomioka, A. Takagi
2015BMJ Case Reports9 citations Open access
Semantic Scholar
Risk stratification of patients with non-ST-elevation acute coronary syndromes by assessing global longitudinal strain
Hiromi Hoshi, A. Takagi, Shoko Uematsu, K. Ashihara +1 more
2014Heart and Vessels9 citations
Semantic Scholar
Low-dose dobutamine induces left ventricular mechanical dyssynchrony in patients with dilated cardiomyopathy and a narrow QRS: a study using real-time three-dimensional echocardiography.
Yoshimi Yagishita-Tagawa, Y. Abe, Kotaro Arai, D. Yagishita +8 more
2013Journal of Cardiology8 citations Open access
Semantic Scholar
Prognostic Relevance of a Score for Identifying Diastolic Dysfunction According to the 2016 ASE/EACVI Recommendations in Patients with Hypertrophic Cardiomyopathy.
Chihiro Saito, Y. Minami, Shintaro Haruki, Kotaro Arai +2 more
2021Journal of the American Society of Echocardiography7 citations
Semantic Scholar
Impact of anatomical position of the inflow cannula on stroke in patients with left ventricular assist devices
T. Takada, T. Nishinaka, Y. Ichihara, S. Saito +9 more
2021International Journal of Artificial Organs6 citations
Semantic Scholar
Prognostic Significance of the Mitral L-Wave in Patients With Hypertrophic Cardiomyopathy.
Chihiro Saito, Y. Minami, Kotaro Arai, Shintaro Haruki +4 more
2020American Journal of Cardiology6 citations
Semantic Scholar
Prognostic significance of right ventricular–pulmonary artery coupling assessed by TAPSE/PASP ratio in patients with HFmrEF
M. Ono, Y. Fukunaga, Atsushi Suzuki, S. Shirotani +13 more
2025Heart and Vessels4 citations
Semantic Scholar
Left intraventricular pressure gradient in hypertrophic cardiomyopathy patients receiving implantable cardioverter-defibrillators for primary prevention
K. Yazaki, A. Suzuki, T. Shiga, Y. Minami +4 more
2021BMC Cardiovascular Disorders4 citations Open access
Semantic Scholar
Factors associated with aortic root dilatation after surgically repaired ventricular septal defect
Chihiro Saito, Noritoshi Fukushima, Keiko Fukushima, G. Matsumura +2 more
2017Echocardiography4 citations
Semantic Scholar
Associations of Mitral and Aortic Valve Calcifications with Complex Aortic Atheroma in Patients with Embolic Stroke of Undetermined Source.
Kentaro Ishizuka, T. Hoshino, K. Ashihara, K. Mruyama +5 more
2017Journal of Stroke & Cerebrovascular Diseases4 citations
Semantic Scholar
Prognostic role of right ventricular-pulmonary artery coupling assessed by TAPSE/PASP ratio in patients with heart failure and mildly reduced ejection fraction
M. Ono, A. Suzuki, A. Yoshida, Y. Minami +5 more
2024European Heart Journal3 citations
Semantic Scholar
Utility of dobutamine stress echocardiography in aortic valve regurgitation and reduced left ventricular function
Chihiro Saito, Kotaro Arai, K. Ashihara, H. Niinami +1 more
2021Echocardiography3 citations Open access
Semantic Scholar
Prognostic impact of right ventricular function affected by pulmonary hypertension in hospitalized heart failure patients.
Chihiro Saito, K. Jujo, M. Kametani, Kotaro Arai +6 more
2021Journal of Cardiology3 citations Open access
Semantic Scholar
Temporal analysis of regional strain rate during adenosine triphosphate stress before and after percutaneous coronary interventions
Kazue Gunji, A. Takagi, Kotaro Arai, K. Ashihara +1 more
2015Heart and Vessels3 citations
Semantic Scholar
JCS 2026 Guideline on the Management of Infective Endocarditis.
Chisato Izumi, Masao Daimon, S. Kaji, A. Masumoto +33 more
2026Circulation Journal2 citations Open access
Semantic Scholar
Prognostic Impact of Mitral Valve Sphericity Index After Mitral Valve Transcatheter Edge-to-Edge Repair in Functional Mitral Regurgitation.
T. Kawamoto, Chihiro Koyanagi, Yuichiro Minami, Yukako Tanaka +11 more
2025Circulation Journal2 citations Open access
Semantic Scholar
Persistently low tricuspid annular plane systolic excursion and its prognosis in Japanese hospitalized patients with heart failure with reduced ejection fraction
Kaoru Haruki, Atsushi Suzuki, A. Yoshida, K. Ashihara +2 more
2024Heart and Vessels2 citations
Semantic Scholar
Association of aortic root dilatation with left ventricular function in patients with postoperative ventricular septal defect
Noritoshi Fukushima, Keiko Fukushima, Hiroki Sato, Chihiro Saito +4 more
2019Heart and Vessels2 citations
Semantic Scholar
Narrowing filtered QRS duration on signal‐averaged electrocardiogram predicts outcomes in cardiac resynchronization therapy patients with nonischemic heart failure
A. Suzuki, T. Shiga, D. Yagishita, Yoshimi Yagishita-Tagawa +6 more
2018Annals of Noninvasive Electrocardiology2 citations Open access
Semantic Scholar
Multiple synchronous ventricular lipomas
Chihiro Saito, Kotaro Arai, K. Ashihara, S. Saito +2 more
2016Journal of Echocardiography2 citations
Semantic Scholar
Strain measurements during adenosine triphosphate infusion before and after percutaneous coronary intervention.
Motoko Hosaka, A. Takagi, T. Takagi, K. Ashihara +1 more
2010Circulation Journal2 citations Open access
Semantic Scholar
Benefits of Cardiac Resynchronization Therapy for Heart Failure Patients with Narrow QRS
A. Furugen, N. Matsuda, T. Shiga, Asako Mochida +4 more
20082 citations
Semantic Scholar
Baseline Prolonged QRS Duration May Predict In-Hospital Outcomes of Patients With Acute Myocarditis
A. Yoshida, T. Takada, E. Shibahashi, T. Abe +12 more
2026Circulation Reports1 citations Open access
Semantic Scholar
Left ventricular outflow tract obstruction caused by abnormal mitral valve tendinous Chordae manifesting in the extremely remote period after surgery for partial atrioventricular septal defect: a case report
T. Kawamoto, Tomohito Kogure, Takeshi Shinkawa, K. Ashihara +1 more
2025European Heart Journal: Case Reports1 citations
Semantic Scholar
Right atrial conduction time for predicting coexistent typical atrial flutter in patients with paroxysmal atrial fibrillation
S. Higuchi, Koichiro Ejima, M. Shoda, M. Kanai +10 more
2020Cardiovascular Electrophysiology1 citations
Semantic Scholar
Stress echocardiography causes stress cardiomyopathy: A very rare complication should be reminded
A. Takagi, T. Takagi, Kotaro Arai, K. Ashihara +1 more
2012Journal of Cardiology Cases1 citations Open access
Semantic Scholar
Reply to “TAPSE/PASP Ratio as a Prognostic Marker in HFmrEF: A Missed Opportunity?”
M. Ono, Y. Fukunaga, Atsushi Suzuki, S. Shirotani +13 more
2025Heart and Vessels0 citations
Semantic Scholar
PO-02-021 REVERSIBLE CARDIOMYOPATHY INDUCED BY HIGH BURDEN OF PREMATURE ATRIAL COMPLEXES: INSIGHTS FROM POST-ABLATION SPECKLE TRACKING ECHOCARDIOGRAPHY
Satoshi Higuchi, Yukako Tanaka, Masayuki Sakai, Yuko Matsui +6 more
2025Heart Rhythm0 citations
Semantic Scholar
Mitral valve transcatheter edge-to-edge repair as a bridge to treat aortic dissecting aneurysm in a case of Marfan syndrome: a case report
T. Kawamoto, Tomohito Kogure, Chihiro Koyanagi, K. Ashihara +1 more
2024European Heart Journal: Case Reports0 citations Open access
Semantic Scholar
Outcome of transcatheter mitral valve repair in heart failure patients with reduced ejection fraction and severe left ventricular dilatation
M. Sone, A. Suzuki, N. Kikuchi, M. Yoshikawa +10 more
2023European Heart Journal0 citations Open access
Semantic Scholar
Functional mitral regurgitation and ventricular arrhythmias in patients with cardiac resynchronization therapy
A. Yoshimura, A. Suzuki, A. Yoshida, M. Kanai +11 more
2023European Heart Journal0 citations Open access
Semantic Scholar
Left ventricular systolic function affects right atrial pressure as prognosticator in patients with heart failure
Chihiro Saito, K. Jujo, T. Abe, M. Kametani +4 more
2021The International Journal of Cardiovascular Imaging0 citations Open access
Semantic Scholar
Left atrial volume index to predict long-term recovery of the left ventricular ejection fraction in patients with heart failure and reduced ejection fraction
A. Yoshida, A. Suzuki, T. Shiga, S. Tanino +5 more
2021International Journal of the Cardiovascular Academy0 citations Open access
Semantic Scholar
Abstract 13069: Baseline QRS Duration ≫ for >140 msec is Associated With Poor In-Hospital Prognosis of Patients With Acute Myocarditis
A. Yoshida, T. Takada, K. Jujo, E. Shibahashi +10 more
2021Circulation0 citations
Semantic Scholar

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N. Hagiwara×33
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N. Hagiwara — researcher profile on SciRah
Kotaro Arai×22
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Chihiro Saito×12
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M. Shoda×12
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Koichiro Ejima — researcher profile on SciRah

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Y. Minami — researcher profile on SciRah

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Noritoshi Fukushima×7

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Tetsuyuki Manaka×7

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D. Yagishita×7

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Ken-ichi Kato×6

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Ken-ichi Kato — researcher profile on SciRah