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Author

Ko Motoi

Observed names: K Motoi, KO MOTOI
ORCID: 0000-0003-3807-4091
Observed ORCID: 0000-0003-3807-4091
OpenAlex ID: A5074338467
Simple Two-Dimensional Echocardiographic Scoring System for the Estimation of Left Ventricular Filling Pressure
2021 · Michito Murayama, Hiroyuki Iwano, et al. · Journal of the American Society of Echocardiography · 21
Cardiac Involvement with Anti-Mitochondrial Antibody-Positive Myositis Mimicking Cardiac Sarcoidosis
2020 · Takahide Kadosaka, Shingo Tsujinaga, et al. · ESC Heart Failure · 17
Visual echocardiographic scoring system of the left ventricular filling pressure and outcomes of heart failure with preserved ejection fraction
2021 · Michito Murayama, Hiroyuki Iwano, et al. · European Heart Journal - Cardiovascular Imaging · 14
Clinical Utility of Superior Vena Cava Flow Velocity Waveform Measured from the Subcostal Window for Estimating Right Atrial Pressure
2022 · Michito Murayama, Sanae Kaga, et al. · Journal of the American Society of Echocardiography · 13
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Clinical Phenotyping and Treatment Response in Patients With Chronic Heart Failure
2025 · Daishiro Tatsuta, Motoki Nakao, et al. · JACC Advances · 12
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Presence and Relevance of Midsystolic Notching on Right Ventricular Outflow Tract Flow Velocity Envelopes in Pulmonary Hypertension due to Heart Failure
2020 · Yasuyuki Chiba, Hiroyuki Iwano, et al. · Journal of the American Society of Echocardiography · 10
Validation of Left Ventricular Filling Pressure Evaluation by Order of Tricuspid and Mitral Valve Opening in Patients With Atrial Fibrillation
2024 · Hisao Nishino, Michito Murayama, et al. · Circulation Cardiovascular Imaging · 7
Application of an echocardiographic scoring system of left ventricular filling pressure to diagnose acute heart failure in patients complaining dyspnea
2023 · Yoji Tamaki, Hiroyuki Iwano, et al. · Journal of Cardiology · 7
Prognostic Value of Reticulocyte Production Ability in Patients With Chronic Heart Failure
2025 · Motoki Nakao, Toshiyuki Nagai, et al. · Canadian Journal of Cardiology · 6
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Determinants of exercise capacity in patients with heart failure without left ventricular hypertrophy
2022 · Suguru Ishizaka, Hiroyuki Iwano, et al. · Journal of Cardiology · 6
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Associations of right ventricular pulsatile load and cardiac power output to clinical outcomes in heart failure: Difference from systemic circulation
2022 · Yasuyuki Chiba, Hiroyuki Iwano, et al. · Journal of Cardiology · 5
Determinants of altered left ventricular suction in pre-capillary pulmonary hypertension
2021 · Yasuyuki Chiba, Hiroyuki Iwano, et al. · European Heart Journal - Cardiovascular Imaging · 5
Functional significance of intra‐left ventricular vortices on energy efficiency in normal, dilated, and hypertrophied hearts
2020 · Miwa Sarashina‐Motoi, Hiroyuki Iwano, et al. · Journal of Clinical Ultrasound · 5
Exercise Capacity and Clinical Outcomes in Chronic Heart Failure Patients with Mild Tricuspid Regurgitation
2023 · Kosuke Nakamura, Suguru Ishizaka, et al. · Journal of Clinical Medicine · 4
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Multimodal Imaging of Constrictive Pericarditis Induced by Long-term Pergolide Treatment for Parkinson's Disease
2023 · Hiroyuki Aoyagi, Shingo Tsujinaga, et al. · Internal Medicine · 4
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Temporal changes in guideline-directed medical therapy score and clinical outcomes in patients with heart failure
2026 · Toshifumi Tamura, Toshiyuki Nagai, et al. · European Heart Journal - Quality of Care and Clinical Outcomes · 3
Non‐invasive assessment of left ventricular filling pressure in aortic stenosis
2024 · Hiroyuki Aoyagi, Hiroyuki Iwano, et al. · Echocardiography · 3
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Prognostic value of an echocardiographic index reflecting right ventricular operating stiffness in patients with heart failure
2021 · Ryosuke Fujisawa, Kazunori Okada, et al. · Heart and Vessels · 3
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Two cases showing alterations of the order of tricuspid and mitral valve opening during loading manipulations: a new approach for quick assessment of stress-induced left ventricular filling pressure elevation
2022 · Michito Murayama, Hiroyuki Iwano, et al. · Journal of Medical Ultrasonics · 2
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Difference in left atrial myocardial dynamics during reservoir phase between hypertrophic cardiomyopathy and hypertensive heart determined using three-dimensional speckle tracking echocardiography
2022 · Yusuke Yanagi, Kazunori Okada, et al. · The International Journal of Cardiovascular Imaging · 2
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Prognostic Value of Mid-Range QRS Duration in Patients With Heart Failure With Reduced Ejection Fraction
2026 · Shota Saito, Taro Temma, et al. · Circulation Journal · 1
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Paradoxical increase in global longitudinal strain by handgrip exercise despite left ventricular diastolic dysfunction
2023 · Ko Motoi, Hiroyuki Iwano, et al. · Echocardiography · 1
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Impact of right ventricular stiffness on discordance between hemodynamic parameter and regurgitant volume in patients with pulmonary regurgitation
2023 · Ko Motoi, Hiroyuki Iwano, et al. · The International Journal of Cardiovascular Imaging · 1
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Usefulness of the pulmonary venous flow waveform for assessing left atrial stiffness
2022 · Takehiro Abe, Kazunori Okada, et al. · The International Journal of Cardiovascular Imaging · 1
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Influence of left ventricular systolic dysfunction on occurrence of pulsus tardus in patients with aortic stenosis
2021 · Suguru Ishizaka, Hiroyuki Iwano, et al. · Journal of Cardiology · 1
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Works count: 51
Citation count: 156
H-index: 7
I10-index: 6
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