Results 11 to 20 of about 2,331,622 (397)

Development of the heart: (2) Septation of the atriums and ventricles [PDF]

open access: bronzeHeart, 2003
In the first part of our review of cardiac development,1 we discussed the initial changes involved in transformation of the heart forming regions of the embryo into the great veins, the atrial and ventricular chambers, and the arterial trunks. We showed that this first part of cardiac development could be divided into phases of formation of the primary
Robert H. Anderson
openalex   +7 more sources

Sex‐specific activation of SK current by isoproterenol facilitates action potential triangulation and arrhythmogenesis in rabbit ventricles [PDF]

open access: yes, 2018
Sex has a large influence on cardiac electrophysiological properties. Whether sex differences exist in apamin‐sensitive small conductance Ca2+‐activated K+ (SK) current (IKAS) remains unknown.
Chen, Mu   +10 more
core   +1 more source

Effects of early afterdepolarizations on excitation patterns in an accurate model of the human ventricles [PDF]

open access: yes, 2017
Early Afterdepolarizations, EADs, are defined as the reversal of the action potential before completion of the repolarization phase, which can result in ectopic beats.
Panfilov, Alexander   +3 more
core   +3 more sources

The right ventricle in congenital heart disease [PDF]

open access: yesHeart, 2006
In patients with congenital heart disease the right ventricle (RV) may support the pulmonary (subpulmonary RV) or the systemic circulation (systemic RV). During the last 50 years evidence is accumulating that RV dysfunction develops in many of these patients and leads to considerable morbidity and mortality.
P A, Davlouros   +3 more
openaire   +2 more sources

COMPUTER MODELING IN THE DEVELOPMENT OF ARTIFICIAL VENTRICLES OF HEART

open access: yesВестник трансплантологии и искусственных органов, 2011
In article modern researches of processes of development of artificial ventricles of heart are described. Advanta- ges of application computer (CAD/CAE) technologies are shown by development of artificial ventricles of heart.
L. V. Belyaev, A. V. Zhdanov
doaj   +1 more source

α1-adrenergic stimulation increases ventricular action potential duration in the intact mouse heart

open access: yesFACETS, 2021
The role of α1-adrenergic receptors (α-ARs) in the regulation of myocardial function is less well-understood than that of β-ARs. Previous reports in the mouse heart have described that α1-adrenergic stimulation shortens action potential duration in ...
William Joyce   +4 more
doaj   +1 more source

Scenarios for Increasing, Decreasing and Stability of Tpe/QT Ratio (Simulation Study) [PDF]

open access: yesInternational Journal of Biomedicine, 2022
The objective of this simulation was to study the physiological meaning of the novel index for arrhythmic risk stratification – Tpe/QT ratio (the interval from the peak to the end of the T-wave (Tpe) on electrocardiogram divided by QT interval). Methods
Natalia V. Arteyeva, Jan E. Azarov
doaj   +1 more source

21 Tesla MRI Microimaging of Rat Heart by Superparamagnetic Antimyoglobin Bound Nanoparticles [PDF]

open access: yes, 2008
Superparamagnetic iron-oxide bound antimyoglobin (SPIOM) characteristics were analyzed at different pH. After injecting SPIOM in heart, ex vivo magnetic resonance microimaging (MRM) technique was used to visualize microvasculature of rat heart including
Rakesh Sharma
core   +2 more sources

NUCLEAR-CYTOPLASMATIC RELATIONS IN THE CARDIOMYOCYTES AND ENDOTHELIOCYTES OF THE PULMONARY HEART VENTRICLES

open access: yes, 2016
Nuclear-cytoplasmatic relations in the cardiomyocytes and endotheliocytes of the pulmonary heart ventricles have been studied. Relations between nucleus and cytoplasm of the cells of the pulmonary heart ventricles changed considerably which is indicative
M. Hnatiuk, O. Slabyi, L. Tatarchuk
semanticscholar   +1 more source

Twisted atrioventricular connections in double inlet right ventricle: evaluation by magnetic resonance imaging [PDF]

open access: yes, 2008
Twisted atrioventricular connections occur almost exclusively in the hearts with biventricular atrioventricular connections. Only one example of double inlet left ventricle has been illustrated in which the axes of the two atrioventricular valves crossed
Anderson, RH, Ho, SY, Kim, TH, Yoo, SJ
core   +1 more source

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