A5065151966- Cardiovascular Function and Risk Factors
- Cardiac Valve Diseases and Treatments
- Cardiomyopathy and Myosin Studies
- Cardiac Imaging and Diagnostics
- Cardiac Arrhythmias and Treatments
- Congenital Heart Disease Studies
- Kawasaki Disease and Coronary Complications
- Pulmonary Hypertension Research and Treatments
- Coronary Artery Anomalies
- Advanced MRI Techniques and Applications
- Cardiac Structural Anomalies and Repair
- Cardiovascular Effects of Exercise
- Pericarditis and Cardiac Tamponade
- Cardiovascular Disease and Adiposity
- Cardiovascular and Diving-Related Complications
- Infective Endocarditis Diagnosis and Management
- Hemodynamic Monitoring and Therapy
- Tracheal and airway disorders
- Cardiac tumors and thrombi
- Mechanical Circulatory Support Devices
- Atrial Fibrillation Management and Outcomes
- Cardiovascular Issues in Pregnancy
- Asthma and respiratory diseases
- Cardiac, Anesthesia and Surgical Outcomes
- Cardiovascular Health and Disease Prevention
Tokyo Metropolitan Children's Medical Center
2015-2024
RELX Group (Netherlands)
2017
National Cerebral and Cardiovascular Center
1981-2016
Sakakibara Hospital
1980-2015
Meijo University
2012
Okayama Shoka University
2002
Nagoya City University
1999
Nihon University
1997
Shimano (Japan)
1997
Hiroshima University
1989-1990
We analyzed tricuspid regurgitation noninvasively using ultrasonic pulsed Doppler and two-dimensional echocardiography in 66 patients whom was suspected from routine clinical evaluation. All of the also underwent right ventriculography. Ten healthy subjects served as controls. In 62 patients, study adequately performed. 58 pansystolic abnormal signals were detected atrial cavity, interpreted to indicate regurgitant flow. Two-dimensional echocardiograms parasternal four-chamber view...
The aim of the present study was to elucidate mechanisms mitral regurgitation accompanying myocardial infarction. Severity and site evaluated by real-time two-dimensional Doppler flow imaging technique in 81 patients with old incidence did not depend on region There was, however, a close relationship between In spurting from posteromedial area valve, inferior wall involved infarction without exception some these patients, papillary muscle also found be affected infarction; those...
Blood flow patterns were analysed at nine points in the pulmonary area using pulsed Doppler technique combined with cross-sectional echocardiography 53 patients heart disease and 10 healthy subjects. In subjects a normal artery pressure blood pattern systole showed gradual acceleration deceleration rounded summit mid systole, designated round type. hypertension it rapid early sharp peak triangular The time index, defined as ratio of interval from beginning to ejection time, significant...
To elucidate the mechanism of regional hemostasis in left ventricular (LV) cavity during myocardial infarction, blood pathway LV was examined with contrast echocardiography injected from atrium before and after coronary ligation nine canines. Before ligation, echoes spread over one rush. After smokelike indicating were observed at apical middle five dogs akinesis area four dyskinesis. The did not reach apex within diastolic period but turned upward to outflow tract all dogs. In cardiac beats...
The nature of intracardiac thrombi were studied, which the clinical underlying conditions, relation to systemic embolism, growth thrombus and effect anticoagulant therapy on size thrombi, in 818 patients with mitral value disease 1000 myocardial infarction by two-dimensional echocardiography. (1) Common conditions atrial fibrillation, enlarged left cavity predominance stenosis cases apical asynergy low ejection fraction ventricular thrombi. blood stasis should be major factor formation In a...
Regurgitant flow was analysed in 40 cases of mitral regurgitation, using combined ultrasonic pulsed Doppler technique and two dimensional echocardiography. Abnormal signals indicative regurgitant were detected reference to the image long axis view heart short at level orifice. The overall direction into left atrium clearly seen 28 cases, localisation orifice 38 cases. In with valve prolapse anterior leaflet or posterior directed posteriorly anteriorly, respectively. occurred anterolateral...
Coronary artery abnormalities (CAAs) still occur in patients with Kawasaki disease receiving intensified treatment corticosteroids. We aimed to determine the risk factors of CAA development and resistance Post RAISE (Prospective Observational Study on Stratified Treatment With Immunoglobulin Plus Steroid Efficacy for Disease)-the largest prospective cohort date.In RAISE, 2648 consecutive were enrolled. The present study analyzed 724 predicted be intravenous immunoglobulin (IVIG)...
Pulsed Doppler echocardiography in healthy individuals often shows a disturbance of diastolic flow the right ventricular outflow tract just below pulmonary valve that suggests regurgitation. This was studied 50 and 40 patients with cardiopulmonary disease, some whom had regurgitant murmur. Diastolic disturbed 39 individuals. In 32, cross sectional gave satisfactory image valve. The characteristic signals usually lasted throughout diastole, were directed toward cavity, gradually waned towards...
Mitral valve lesions accompanying secundum atrial septal defect were examined in 120 successive patients from May 1978 to December 1980 using real time two dimensional echocardiography. The conclusions as follows: (1) characteristic feature of the mitral lesion is a dislocation leaflet toward left side area coaptation. (2) seen about half with defect. (3) It usually only anterior leaflet, and found near posteromedial commissure. Lesions other sites on all accompany those (4) incidence,...
Mitral regurgitation and its haemodynamic features were investigated non-invasively in cases of hypertrophic cardiomyopathy by means two dimensional Doppler echocardiography. There 28 patients, 14 whom showed systolic anterior motion (SAM) the mitral echo; other did not. The following results obtained. (1) was detected technique all with echo half those without it. (2) signals started immediately after first heart sound. (3) regurgitant flow often distributed from entire orifice over or...
The Doppler echocardiographic features of coronary arteriovenous fistula were investigated in eight patients with left or right fistulas who had a continuous heart murmur the upper precordial area and whose diagnoses confirmed by angiography. In four dilated lumen was visualised cross sectional echocardiography. Of these, three showed abnormal unidirectional flow signals broad velocity spectra fistula. Abnormal, powerful, bidirectional detected part pulmonary artery two patients, ventricle...
Sixty patients with pulmonary regurgitation were studied by the pulsed Doppler technique combined two-dimensional and M-mode echocardiography. Patients had abnormal signals just below pulmonic valve in right ventricular outflow tract diastole on image. These considered to indicate regurgitant flow. There are two patterns of signals. In hypertension, maximal component instantaneous flow velocity is sustained at about same signal strength throughout diastole, but when arterial pressure normal,...