Faculty Information - KOYANAGI Chihiro

（Last updated : 2025-07-04 16:06:45）

KOYANAGI Chihiro
Department School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine Department of Internal Medicine, Division of Cardiology

Position Assistant Professor

■ Published papers

1.	Original article	Increased Left Ventricular End-Diastolic Volume Index Is Associated With Increased Adverse Events After MitraClip Implantation. 2024/01/15
2.	Original article	Minimum-incision trans-subclavian transcatheter aortic valve replacement with regional anesthesia. 2023/02
3.	Original article	Utility of dobutamine stress echocardiography in aortic valve regurgitation and reduced left ventricular function. 2022/04
4.	Original article	Increased left atrial volume index is associated with more cardiovascular events in patients with acute coronary syndrome: HIJ-PROPER study findings 2022/02
5.	Original article	Utility of the minimum-incision transsubclavian approach for transcatheter aortic valve replacement on clinical outcomes in patients with small vessel anatomy 2021/07
6.	Original article	Association between elevated left ventricular mass index and increased cardiovascular events in patients with acute coronary syndrome: A sub-analysis of the HIJ-PROPER study 2021
7.	Original article	Effect of Transcatheter Aortic Valve Implantation on Renal Function in Patients With Chronic Kidney Disease. 2020/07/01
8.	Original article	Right atrial conduction time for predicting coexistent typical atrial flutter in patients with paroxysmal atrial fibrillation. 2020/06
9.	Original article	B-type natriuretic peptide and outcome in patients with apical hypertrophic cardiomyopathy. 2020/05
10.	Original article	Prognostic Implication of First-Degree Atrioventricular Block in Patients With Hypertrophic Cardiomyopathy. 2020/03
11.	Original article	Association of aortic root dilatation with left ventricular function in patients with postoperative ventricular septal defect. 2019/09
12.	Original article	Prevalence, clinical characteristics, and outcome of atrial functional mitral regurgitation in hospitalized heart failure patients with atrial fibrillation. 2018/10
13.	Original article	Factors associated with aortic root dilatation after surgically repaired ventricular septal defect. 2017/07
14.	Review article	Multiple synchronous ventricular lipomas 2016/06
15.	Original article	Correlation between left atrial appendage morphology and flow velocity in patients with paroxysmal atrial fibrillation. 2016/01
16.	Other	Comparison of Anigographic Outcomes after Paclitaxel- and Sirolimus- eluting Stents Implantation in Diabetic Patients 2010
17.	Other	Comparison of Diabetic and Non-diabetic Patients after Paclitaxel-eluting Stent Implantation 2010
18.	Other	Comparison of diabetic and non-diabetic patients after paclitaxel-eluting stent implantation 2010
19.	Other	The Impact of Paclitaxel-Eluting Stent on Small Vessels in Patients with Diabetes 2010
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■ Academic conference presentation

1.	Prognostic Impact of Mitral Valve Sphericity Index after Transcatheter Edge-to edge Repair in Patients with Functional Mitral Regurgitation （Speech，General） 2025/03/28
2.	Even moderate tricuspid regurgitation leads to a poor prognosis in hospitalized patients with heart failure and preserved ejection fraction （Poster notice，General） 2022/08/26
3.	Prognostic Predictors of Patients with Acute Myocarditis -Multicenter Observational Study- （Speech，General） 2021/10/01
4.	Predictors of Normalization of Left Ventricular Systolic Function After Acute Myocarditis -multicenter Observational Study （Speech，General） 2020/11/13
5.	Relationship between B-type natriuretic peptide and various adverse outcomes in patients with apical hypertrophic cardiomyopathy （Speech，General） 2019/10/04
6.	Non-invasive Estimation of Right Atrial Pressure by IVC Measurement Differently Predicts Long-term Prognoses in Acute Heart Failure Patients with Reduced and Preserved LVEF （Speech，General） 2019/08/31
7.	Usefulness of Dobutamine Stress Echocardiography in Aortic Valve Regurgitation Patients with Reduced Left Ventricular Systolic Function （Poster notice，General） 2019/06/23
8.	Right Ventricular Function has Prognostic Values in Acute Heart Failure Patients with Reduced but NOT Preserved Left Ventricular Systolic Function （Speech，General） 2019/03/31
9.	Prognostic Implications of the Mitral L Wave in Patients with Hypertrophic Cardiomyopathy （Speech，General） 2019/03/29
10.	Pulmonary Hypertension Cancels the Prognostic Impact of Right Ventricular Tissue Doppler Imaging Systolic Functional Index in Acute Heart Failure Patients With Left Ventricular Systolic Dysfunction （Poster notice，General） 2018/11/11
11.	The Ratio of Systolic Function to Systolic Pressure of Right Ventricule Predicts Mortality in Acute Heart Failure Patients With Reduced Left Ventricular Systolic Function （Poster notice，General） 2018/11/11
12.	Tissue Doppler Right Ventricular Systolic Function Indexes Predicts Survival After Discharge in Acute Heart Failure Patients With Reduced but Not With Preserved Left Ventricular Systolic Function （Poster notice，General） 2018/11/10
13.	Association between Heart Valve Calcification and Atrial Fibrillation Recurrence after Catheter Ablation （Poster notice，General） 2018/07/13
14.	Relationship between Mitral Annular Calcification and Aortic Plaque （Poster notice，General） 2018/03/25
15.	Functional Tricuspid Regurgitation with or without Right Ventricular Dysfunction in Hospitalized Heart Failure Patients with Atrial Fibrillation （Poster notice，General） 2018/03/24
16.	Predictive Value of Total Atrial Conduction Time Estimated with Tissue Doppler Imaging for Predicting Atrial Fibrillation Recurrence after Catheter Ablation （Speech，General） 2018/03/23
17.	Predictive value of the total atrial conduction time estimated with tissue Doppler imaging for predicting atrial tachyarrhythmia recurrences after catheter ablation （Poster notice，General） 2018/03/19
18.	Prognostic Implications of Atrial Functional Mitral Regurgitation in Hospitalized Heart Failure Patients with Atrial Fibrillation （Poster notice，General） 2017/03/17
19.	Usefulness of Global Left Ventricular Longitudinal Strain during Low-Dose Dobutamine Stress in Patients with Heart Failure Undergoing Cardiac Resynchronization Therapy （Speech，General） 2017/03/17
20.	Predictive value of the total atrial conduction time estimated with tissue Doppler imaging for predicting atrial fibrillation recurrence after a repeat radiofrequency catheter ablation （Speech，General） 2016/07/16
21.	Exercise Stress Echocardiography for Atrial Functional Mitral Regurgitation （Poster notice，General） 2016/06/12
22.	Predictor of Aortic Root Dilatation in Adolescent and Adult Patients with Surgically Repaired Ventricular Septal Defect （Speech，General） 2015/04/26
23.	A Comparison Between Left Appendage Morphologies on Left Appendage Flow Velocity in Patients with Atrial Fibrillation. （Speech，General） 2014/11/19
24.	The Impact of Renal Function and Diabetes on 1-year Outcomes in Patients Undergoing Percutaneous Coronary Intervention with Drug-eluting Stents （Poster notice，General） 2014/03/23
25.	The Impact of Hemodialysis and Insulin on 1-year Outcomes in Diabetic Patients Undergoing Percutaneous Coronary Intervention with Drug-eluting Stents （Poster notice，General） 2014/03/21
26.	Noninvasive Detection of Subclinical Left Ventricular Dysfunction by Strain Echocardiography in Patients with Marfan Syndrome （Poster notice，General） 2011/03/18
27.	Comparison of angiographic outcomes after paclitaxel- and sirolimus- eluting stents implantation in chronic total occulusions （General） 2010/08
28.	Comparison of diabetic and non-diabetic patients after paclitaxel-eluting stent implantation （General） 2010/08
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■ Education

1.		Faculty of Medicine, Tokyo Women's Medical University, Graduated,
2.	2018/06/15 Degree Acquisition	Tokyo Women's Medical University,