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Hirotsugu Yamada

Researcher at University of Tokushima

Publications -  340
Citations -  7901

Hirotsugu Yamada is an academic researcher from University of Tokushima. The author has contributed to research in topics: Diastole & Heart failure. The author has an hindex of 40, co-authored 312 publications receiving 6853 citations. Previous affiliations of Hirotsugu Yamada include Case Western Reserve University & Cleveland Clinic.

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Phased-Array Intracardiac Echocardiography Monitoring During Pulmonary Vein Isolation in Patients With Atrial Fibrillation Impact on Outcome and Complications

TL;DR: Intracardiac echocardiography improves the outcome of cooled-tip PVI and power adjustment guided by direct visualization of microbubble formation reduces the risk of PV stenosis and improves long-term cure.
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Clinical application of pulsed Doppler tissue imaging for assessing abnormal left ventricular relaxation.

TL;DR: Early diastolic parameters derived from the motion velocity of the LV posterior wall by pulsed Doppler tissue imaging were closely related to the time constant, which may allow noninvasive evaluation of abnormal LV relaxation in patients with various heart diseases.
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Ventricular untwisting: a temporal link between left ventricular relaxation and suction.

TL;DR: The start of LV untwisting coincided with the beginning of relaxation and preceded suction-aided filling resulting from elastic recoil, suggestingUntwisting rate may be a useful marker of diastolic function or even serve as a therapeutic target for improving diastolics function.
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Assessment of Left Ventricular Torsional Deformation by Doppler Tissue Imaging Validation Study With Tagged Magnetic Resonance Imaging

TL;DR: Testing the accuracy of a novel method that uses Doppler tissue imaging (DTI) for quantifying LV torsion in humans with tagged magnetic resonance imaging (MRI) as a reference has shown that DTI can quantifyLV torsional deformation over time.
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Role of Left Atrial Appendage in Left Atrial Reservoir Function as Evaluated by Left Atrial Appendage Clamping During Cardiac Surgery

TL;DR: It is concluded that the LAA is more compliant than the LA main chamber, and plays an important role in LA reservoir function in the presence of LA pressure and/or volume overload.