Search Results - "Ramza, B."

Occurrence of phrenic nerve stimulation in cardiac resynchronization therapy patients: the role of left ventricular lead type and placement site by Biffi, Mauro, Exner, Derek V, Crossley, George H, Ramza, Brian, Coutu, Benoit, Tomassoni, Gery, Kranig, Wolfgang, Li, Shelby, Kristiansen, Nina, Voss, Frederik

“…Unwanted phrenic nerve stimulation (PNS) has been reported in ∼1 in 4 patients undergoing left ventricular (LV) pacing. The occurrence of PNS over mid-term…”
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Oscillations of Membrane Current and Excitability Driven by Metabolic Oscillations in Heart Cells by O'Rourke, Brian, Ramza, Brian M., Marban, Eduardo

“…Periodic changes in membrane ionic current linked to intrinsic oscillations of energy metabolism were identified in guinea pig cardiomyocytes. Metabolic stress…”
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Safety and Effectiveness of Placement of Pacemaker and Defibrillator Leads in the Axillary Vein Guided by Contrast Venography by Ramza, Brian CM, Rosenthal, Lawrence, Hui, Richard, Nsah, Emmanuel, Savader, Scott, Lawrence, John H, Tomaselli, Gordon, Berger, Ronald, Brinker, Jeffrey, Calkins, Hugh

“…Despite evidence of an increased incidence of lead fracture, the infraclavicular subclavian approach remains the dominant approach for placement of pacemaker…”
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Technique For CTA Visualization Of The Left Pericardiophrenic Vein For Planning Of Phrenic Nerve Stimulator Lead Implantation by Fleddermann, A., Mehta, N., Lehenbauer, K., Iyer, A., Saghir, M., Ramza, B., Gupta, S., Thompson, R.

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Prospective Randomized Comparison of the Safety and Effectiveness of Placement of Endocardial Pacemaker and Defibrillator Leads Using the Extrathoracic Subclavian Vein Guided by Contrast Venography Versus the Cephalic Approach by CALKINS, HUGH, RAMZA, BRIAN M., BRINKER, JEFFREY, ATIGA, WALTER, DONAHUE, KEVIN, NSAH, EMMANUEL, TAYLOR, ERIC, HALPERIN, HENRY, LAWRENCE, JOHN H., TOMASELLI, GORDON, BERGER, RONALD D.

“…CALKINS, H., et al.: Prospective Randomized Comparison of the Safety and Effectiveness of Placement of Endocardial Pacemaker and Defibrillator Leads Using the…”
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OUTCOMES USING TWO DIFFERENT VASCULAR DILATATION TECHNIQUES FOR MICRA LEADLESS PACEMAKER PLACEMENT by Mohammed, M., Arshi, J., Ramza, B., Wimmer, A., Steinhaus, D., Giocondo, M., Gupta, S., Yousuf, O.

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Investigation of a novel algorithm for synchronized left-ventricular pacing and ambulatory optimization of cardiac resynchronization therapy: Results of the adaptive CRT trial by Martin, David O., MD, MPH, Lemke, Bernd, MD, Birnie, David, MD, MB, ChB, Krum, Henry, MBBS, PhD, Lee, Kathy Lai-Fun, MD, Aonuma, Kazutaka, MD, PhD, Gasparini, Maurizio, MD, Starling, Randall C., MD, MPH, Milasinovic, Goran, MD, Rogers, Tyson, MS, Sambelashvili, Alex, PhD, Gorcsan, John, MD, Houmsse, Mahmoud, MD, FHRS

“…Background In patients with sinus rhythm and normal atrioventricular conduction, pacing only the left ventricle with appropriate atrioventricular delays can…”
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Cellular mechanisms of delayed recovery of excitability in ventricular tissue by Joyner, R W, Ramza, B M, Osaka, T, Tan, R C

“…It is well established that ventricular tissue, under some conditions, exhibits the phenomenon of postrepolarization refractoriness (PRR) in which the tissue…”
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Relation between impedance and electrode temperature during radiofrequency catheter ablation of accessory pathways and atrioventricular nodal reentrant tachycardia by Nsah, Emmanuel, Berger, Ronald, Rosenthal, Larry, Hui, Richard, Ramza, Brian, Jumrussirikul, Pitayadet, Lawrence, John H., Tomaselli, Gordon, Kass, David, Calkins, Hugh

“…Objectives Impedance monitoring has been proposed as a method to assess the adequacy of tissue heating during catheter ablation procedures. The purpose of this…”
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Cellular Mechanism of the Functional Refractory Period in Ventricular Muscle by Ramza, Brian M, Tan, Rosemarie C, Osaka, Toshiyuki, Joyner, Ronald W

“…A premature action potential elicited in ventricular muscle during the functional refractory period of a preceding action potential requires an increased…”
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Metabolic oscillations in heart cells by O'Rourke, B, Ramza, B M, Romashko, D N, Marban, E

“…Oscillatory rhythms underlie biological processes as diverse and fundamental as neuronal firing, secretion, and muscle contraction. We have detected periodic…”
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Effects of tissue geometry on initiation of a cardiac action potential by Joyner, R W, Ramza, B M, Tan, R C, Matsuda, J, Do, T T

“…We used rabbit ventricular papillary muscles and isolated rabbit ventricular muscle cells to compare the effects of a decrease in cardiac excitability. For the…”
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Alterations in endocardial activation of the canine papillary muscle early and late after myocardial infarction by KIENZLE, M. G, TAN, R. C, RAMZA, B. M, MING-LON YOUNG, JOYNER, R. W

“…Permanent coronary occlusion produces time-dependent changes in surviving subendocardial cellular properties. We compared the functional alterations in…”
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Modulation of the Purkinje-ventricular muscle junctional conduction by elevated potassium and hypoxia by TAN, R. C, RAMZA, B. M, JOYNER, R. W

“…Action potential transmission in the canine ventricle normally occurs from the Purkinje (P) system into the ventricular muscle (VM) at specific P-VM junction…”
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Effects of hypoxia on atrioventricular node of adult and neonatal rabbit hearts by Young, M L, Tan, R C, Ramza, B M, Joyner, R W

“…We used an isolated perfused heart model to assess the effects of graded hypoxia (95, 45, 20, 10, or 0% O2, exposure for 5 min) on the adult and neonatal (0-3…”
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Effects of stimulation frequency on Purkinje-ventricular conduction by Joyner, R W, Ramza, B M, Tan, R C

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Adenosine and hypoxia effects on atrioventricular node of adult and neonatal rabbit hearts by Young, M L, Ramza, B M, Tan, R C, Joyner, R W

“…An isolated perfused heart model was used to assess the effects of hypoxia and adenosine on the adult and neonatal (1-5 days) rabbit atrioventricular (AV)…”
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Developmental changes in the electrophysiologic properties of rabbit papillary muscles by OSAKA, T, RAMZA, B. M, TAN, R. C, JOYNER, R. W

“…We studied the electrophysiological properties of adult (AD) and newborn (NB) rabbit papillary muscles in vitro with superfusion of normal Tyrode's solution,…”
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Propagation through electrically coupled cells: two inhomogeneously coupled cardiac tissue layers by Joyner, R W, Overholt, E D, Ramza, B, Veenstra, R D

“…Most of the ventricular endocardial surface is covered with a layer of Purkinje (P) cells which provide a rapid spread of activation into the underlying…”
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Hot topics: CRT and ICD therapy by Biffi, M., Exner, D., Crossley, G., Ramza, B., Coutu, B., Tomassoni, G. F., Kranig, W., Voss, F., Teo, K. M., Stuart, A. G., Tomassoni, G., Baker, J., Corbisiero, R., Love, C., Martin, D., Niazi, I., Sheppard, R., Worley, S., Jurkuvenas, P., Sedlacek, K., Malek, I., Hoskova, L., Kautzner, J., Landolina, M., Lunati, M., Gasparini, M., Santini, M., Giannola, G., Ammirati, F., Ricci, R., Valsecchi, S., Folino, A. F., Vaccari, D., Zanotto, G., Marras, E., Bertaglia, M., Chiusso, F., Buja, G., Veneto Region, H. M. S. G., Strunk-Mueller, C., Meyer Zu Vilsendorf, D., Stellbrink, C., Senges, J., Schwab, J. O., Gordon, B. J., Fazal, I. A., Plummer, C. J., Mccomb, J. M., Kleemann, T., Strauss, M., Hochadel, M., Seidl, K., Zahn, R.

“…Abstract only…”
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