Results 51 to 60 of about 1,137,633 (259)

Angina de Prinzmetal Angina de Prinzmetal Prinzmetal's angina

open access: yesArquivos Brasileiros de Cardiologia, 2009
Essa síndrome é causada por um espasmo focal de uma artéria coronária epicárdica, levando a isquemia miocárdica grave. Embora freqüentemente acredite-se que o espasmo ocorra em artérias sem estenose, muitos pacientes com angina de Prinzmetal apresentam ...
Eduardo Contreras Zuniga   +4 more
doaj   +1 more source

A coupled mitral valve -- left ventricle model with fluid-structure interaction

open access: yes, 2017
Understanding the interaction between the valves and walls of the heart is important in assessing and subsequently treating heart dysfunction. With advancements in cardiac imaging, nonlinear mechanics and computational techniques, it is now possible to ...
Brown, André EX   +11 more
core   +3 more sources

Direct effects of glucose administration on heart rate, myocardial contraction, and duration of cardiac cycle in frog's heart

open access: yesJournal of the Practice of Cardiovascular Sciences, 2018
Background: Recent and emerging evidences show that glucose ingestion causes prolonged Q-T interval and can trigger arrhythmia. Objective: The objective of this study is to examine the effects of administration of glucose solutions on the heart rate ...
B I Waziri, A Shahzad
doaj   +1 more source

Visualization of Minute Mechanical-Excitation/Relaxation Wave-front Propagation in Myocardial Tissue [PDF]

open access: yes, 2010
Unlike the case of skeletal muscle, the direction of myocardial contraction does not coincide with the direction of work necessary to eject the intraventricular blood, contributing to great complexity of the wall deformation sequence of cardiac ...
Hiroshi Kanai, Motonao Tanaka
core   +1 more source

Investigating interactions between epicardial adipose tissue and cardiac myocytes: what can we learn from different approaches? [PDF]

open access: yes, 2017
Heart disease is a major cause of morbidity and mortality throughout the world. Some cardiovascular conditions can be modulated by lifestyle factors such as increased exercise or a healthier diet, but many require surgical or pharmacological ...
Agra   +164 more
core   +1 more source

Measurement of Cardiac Mechanical Function in Isolated Ventricular Myocytes from Rats and Mice by Computerized Video-Based Imaging

open access: yesBiological Procedures Online, 2001
Isolated adult cardiac ventricular myocytes have been a useful model for cardiovascular research for more than 20 years. With the recent advances in cellular physiology and transgenic techniques, direct measurement of isolated ventricular myocyte ...
Ren Jun, Wold Loren
doaj   +1 more source

Changes in left atrial deformation in hypertrophic cardiomyopathy: Evaluation by vector velocity imaging. [PDF]

open access: yes, 2012
OBJECTIVES: Hypertrophic cardiomyopathy (HCM) represents a generalized myopathic process affecting both ventricular and atrial myocardium. We assessed the global and regional left atrial (LA) function and its relation to left ventricular (LV) mechanics ...
Badran, HM   +6 more
core   +2 more sources

Recent Developments in Cardiac Contractility Modulation for Heart Failure [PDF]

open access: yesTexas Heart Institute Journal
None.
Joshua R. Hirsch, MD, Hamid Afshar, MD
doaj   +1 more source

Arrhythmic risk in elderly patients candidates to transcatheter aortic valve replacement. predicative role of repolarization temporal dispersion [PDF]

open access: yes, 2019
Degenerative aortic valve stenosis (AS) is associated to ventricular arrhythmias and sudden cardiac death, as well as mental stress in specific patients. In such a context, substrate, autonomic imbalance as well as repolarization dispersion abnormalities ...
Crapanzano, Davide   +11 more
core   +1 more source

Native cardiac magnetic resonance T1 mapping and cardiac mechanics as assessed by speckle tracking echocardiography in patients with beta-thalassaemia major

open access: yesInternational Journal of Cardiology: Heart & Vasculature, 2022
Background: We hypothesize that cardiac magnetic resonance (CMR) native T1 is associated with myocardial deformation in thalassaemia patients. The present study aimed to compare CMR native T1 values to conventional T2* values in patients with beta ...
Wing-Shan See   +7 more
doaj   +1 more source

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