Masao Daimon
A5056457660- Cardiovascular Function and Risk Factors
- Cardiac Imaging and Diagnostics
- Cardiac Valve Diseases and Treatments
- Cardiovascular Disease and Adiposity
- Infective Endocarditis Diagnosis and Management
- Pulmonary Hypertension Research and Treatments
- Cardiovascular Health and Disease Prevention
- Cardiac Structural Anomalies and Repair
- Blood Pressure and Hypertension Studies
- Atrial Fibrillation Management and Outcomes
- Cardiovascular Effects of Exercise
- Cardiomyopathy and Myosin Studies
- Heart Rate Variability and Autonomic Control
- Cardiac Arrhythmias and Treatments
- Cardiac electrophysiology and arrhythmias
- Hemodynamic Monitoring and Therapy
- Congenital Heart Disease Studies
- Ultrasound in Clinical Applications
- Streptococcal Infections and Treatments
- Amyloidosis: Diagnosis, Treatment, Outcomes
- Cardiac pacing and defibrillation studies
- Cardiac, Anesthesia and Surgical Outcomes
- Muscle Physiology and Disorders
- Heart Failure Treatment and Management
- Antimicrobial Resistance in Staphylococcus
Mita Hospital
2023-2025
The University of Tokyo
2015-2024
University of Tokyo Hospital
2015-2024
International University of Health and Welfare
2023
Tokyo Medical University
2019
Juntendo University
2008-2016
Juntendo University Hospital
2011-2016
Cleveland Clinic
2005-2010
Chiba University
2002-2009
Park Terrace Care Center
2006
Background— Most rings currently used for tricuspid valve annuloplasty are formed in a single plane, whereas the actual annulus (TA) may have nonplanar or 3-dimensional (3D) structure. The purpose of this study was therefore to investigate 3D geometry TA healthy subjects and patients with functional regurgitation (TR). Methods Results— This consisted 15 16 TR who had real-time echocardiography. With our customized software, 8 points along were determined rotated plane around axis at...
Should early surgery be conducted for asymptomatic patients with severe AR an LVEF ≥50% and LVESD index >25 mm/m 2 ?Early may considered .2 C CQ 3 operation very AS preserved LVEF?If the transvalvular peak velocity is ≥5.0 m/s, mean pressure gradient ≥60 mmHg, or AVA ≤0.6 cm , recommended at low surgical risk. B 4Should concomitant tricuspid valve repair mild TR annular dilation (>40 mm 21 in diameter)?Concomitant diameter). 5Can direct oral anticoaglants (DOACs) used AF after bioprosthetic...
Tricuspid valve (TV) annuloplasty is recommended for functional tricuspid regurgitation (TR), which caused by TV annulus dilatation and tethering of the leaflets. However, impact deformations on outcome remains unknown. The goal this study was to investigate relationship between preoperative deformation residual TR after annuloplasty.Two hundred sixteen patients with had 2D echocardiography before annuloplasty. Right ventricular fractional area change left ejection fraction were determined...
Background Normal values for echocardiographic measurements and the relationship between these parameters age in a large Japanese population are still unknown. Methods Results A total of 700 healthy aged 20-79 years underwent 2-dimensional Doppler echocardiography at collaborating institutions. The respective mean obtained men women were as follows: septal wall thickness, 0.9±0.1 0.8±0.1 cm; posterior left ventricular (LV) diastolic diameter, 4.8±0.4 4.4±0.3 LV systolic 3.0±0.4 2.8±0.3...
The durability of tricuspid valve (TV) repair by annuloplasty is limited. Identification mechanisms recurrent or residual regurgitation (TR) after necessary to improve results TV repair. purpose this study was investigate echocardiographic determinants mid-term outcome annuloplasty.This consisted 39 patients with functional TR who had echocardiography preoperatively, early postoperatively (5+/-2 days), and >1 year (20+/-6 months) annuloplasty. Detailed measurements were performed, including...
Background— Ischemic mitral regurgitation (IMR) is associated with asymmetric changes in annular and ventricular geometry. Surgical repair standard symmetric annuloplasty rings results a high incidence of residual or recurrent (MR). The Carpentier-McCarthy-Adams (CMA) IMR ETlogix ring the first remodeling specifically designed to treat leaflet tethering dilatation. We used quantitative 2-dimensional echo examine early valve (MV) CMA patients IMR. Methods Results— Fifty-nine (aged 68±12...
Although surgical annuloplasty is the standard repair for ischemic mitral regurgitation (IMR), its application limited by high morbidity and mortality. Using 2D real-time 3D echocardiography in an ovine model of chronic IMR, we evaluated geometric impact short-term efficacy a percutaneous transvenous catheter-based approach valve (MV) using novel device placed coronary sinus.Six sheep developed IMR 8 weeks after induced posterior myocardial infarction. An optimized to reduce...
Background: Global longitudinal strain (GLS) measured by two-dimensional speckle tracking imaging (2D-STI) has been shown to be useful for assessing subtle change in left ventricular function severe aortic stenosis (AS) patients with preserved ejection fraction (LVEF). However, there is little information about the relation between progression of AS and changes GLS. The aim this study was evaluate severity valve GLS 2D-STI normal LVEF. Methods: We studied 113 (age, 73.3 ± 8.8 years; male,...
Background: The recently developed real-time 3-dimensional echocardiography (RT3DE) is a promising imaging method to quantify cardiac chamber volumes and their functions in clinical practice. However, normal reference values of RT3DE parameters have not been fully investigated large, healthy Japanese population. Methods Results: This study consisted 410 subjects aged from 20 69 years who had at one the 23 collaborating institutions. All no history disease risk factors. mean men women were as...
Background Convolutional neural networks (CNNs) have emerged as a novel method for evaluating heart failure (HF) in adult electrocardiograms (ECGs). However, such CNNs are not applicable to pediatric HF, where abnormal anatomy of congenital defects plays an important role. ECG-based reflecting neurohormonal activation (NHA) may be useful marker HF. This study aimed develop and validate ECG-derived HF that reflects the risk future cardiovascular events. Methods Based on 21,378 ECGs from 8324...