Zobrazeno 1 - 8
of 8
pro vyhledávání: '"William C. Hunter"'
Publikováno v:
The American journal of physiology. 276(3)
The temporal evolution of three-dimensional (3-D) strain maps derived from magnetic resonance imaging (MRI) tagging were used to noninvasively evaluate mechanical activation in the left ventricle (LV) while seven canine hearts were paced in situ from
Autor:
Paul M.L. Janssen, William C. Hunter
Publikováno v:
The American journal of physiology. 269(2 Pt 2)
Recent studies have emphasized the importance of the late systolic phase for understanding ventricular ejection. To examine the myocardial factors controlling this phase, we studied the timing of twitch contraction in nine excised rat trabeculae cont
Publikováno v:
The American journal of physiology. 265(3 Pt 2)
This study focuses on elucidating how ventricular afterloading conditions affect the time course of change of left ventricular pressure (LVP) throughout the cardiac cycle, with particular emphasis on revealing specific limitations in the time-varying
Publikováno v:
The American journal of physiology. 260(4 Pt 2)
To determine the dynamic property of cardiac function response to alterations in coronary perfusion, we varied coronary arterial pressure (CAP) sinusoidally around one of four mean CAP levels with a constant amplitude at several frequencies in isolat
Publikováno v:
The American journal of physiology. 259(5 Pt 2)
Barium contracture tonically activates myocardium while preserving cellular integrity. We studied the metabolic and mechanical consequences of sustained Ba2+ contracture. We measured the time course of phosphocreatine (PCr), ATP, Pi, total phosphate,
Publikováno v:
The American journal of physiology. 237(3)
Publikováno v:
The American journal of physiology. 246(1 Pt 2)
We measured cardiac mechanical restitution curves, which describe the time course of recovery of ventricular contractile strength following a steady-state beat. In the first series of experiments, we studied left ventricles that beat isovolumically t
Publikováno v:
The American journal of physiology. 251(6 Pt 2)
A new analytical method (sequential convolution) for describing ventricular-vascular interactions was used to predict instantaneous pressure and flow in four isolated canine left ventricles ejecting into a computer-simulated arterial system. Ventricu