Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Valmik Bhargava"'
Publikováno v:
Journal of the American College of Cardiology. 45:1269-1279
ObjectivesThe aim of this study was to separate isthmus-dependent atrial flutter (IDAFL) from non-isthmus-dependent atrial flutter (NIDAFL) from the electrocardiogram (ECG) based on functional differences.BackgroundThe ECG analyses of F-wave shape su
Publikováno v:
Journal of Cardiovascular Electrophysiology. 14:971-981
Introduction: Separating nonisthmus-dependent atrial flutter (AFL) from “organized” atrial fibrillation (AF), or isthmus-dependent AFL, may be difficult using ECG characteristics alone. We hypothesized that temporal and spatial phase analysis of
Autor:
Robert J. Russo, Bruce J. Kimura, Armin Arbab-Zadeh, Anthony N. DeMaria, William F. Penny, Valmik Bhargava
Publikováno v:
American Heart Journal. 138:865-872
Background: Motion of the intravascular ultrasound (IVUS) probe within the coronary artery from cardiac contraction may result in artifacts during 3-dimensional ultrasound image reconstruction and inaccurate measurements of coronary compliance. The p
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 270:H1766-H1771
The current concept of ventricular filling in the elasmobranch fish (sharks and rays) is that a subambient pericardial pressure establishes a negative diastolic pressure gradient for the atrium and that ventricular end-diastolic volume is exclusively
Publikováno v:
Circulation Research. 68:197-208
The influence of the pericardium on right and left ventricular filling was studied using two-dimensional and Doppler echocardiography in 14 open-chest dogs. Doppler echo parameters of filling included early (E) and late (A) velocities and their ratio
Autor:
Jeffrey B. Graham, Valmik Bhargava, Katharina S. Sunnerhagen, Brian D. Hoit, Ralph Shabetai, N. Chin Lai
Publikováno v:
Journal of Comparative Physiology B. 160:259-268
The pressure difference between the cardinal sinus and the pericardium, and the transmural ventricular diastolic pressure at rest and during swimming in the leopard shark, Triakis semifasciata, was measured to characterize the mechanism of cardiac fi
Autor:
Valmik Bhargava, Sanjiv M. Narayan
Publikováno v:
Computers in Cardiology, 2003.
We hypothesized that ECGs exhibiting a predominant spectral peak reflect temporal regularity, and that waves that maintain their shape between axes reflect spatial regularity, in cardiac activation. We analyzed ECGs of 38 patients at electrophysiolog
Autor:
Armin Arbab-Zadeh, Valmik Bhargava, Thomas W. Ziegler, Ravindra L. Mehta, Ethisham Mahmud, Anthony N. DeMaria, Steven B. Oglevie, Scott R. Mullaney
Publikováno v:
American journal of kidney diseases : the official journal of the National Kidney Foundation. 39(4)
Reliable identification and treatment of specific hemodialysis access complications may improve access patency and result in significant cost reduction. Angiography is the gold standard for the evaluation of vascular access; however, it has significa
Publikováno v:
Physiological zoology. 71(2)
The current concept of ventricular filling in elasmobranch and teleost fishes is that atrial contraction is the primary, if not the exclusive, determinant of ventricular filling. Recent echocardiographic and on-line hemodynamic data for elasmobranchs
Publikováno v:
Journal of the American College of Cardiology. 25(2):354A-355A
The role of hemodynamic shear stresses in atherogenesis remains uncertain. Necropsy studies suggest that atherosclerotic lesions at the origin of the LAD form opposite the circumflex takeoff, ratherthan in the high-velocity high-shear bifurcation flo