Search

Your search keyword '"Bender, Birgit"' showing total 11 results
Start Over Author "Bender, Birgit"
11 results on '"Bender, Birgit"'

4. An Irregular, Narrow QRS Complex Tachycardia With Ventriculoatrial Block

Author

Division of Cardiology, Department of Internal Medicine, JW Goethe University, Frankfurt, Germany; and the Cardiology Division, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, Bender, Birgit, Li, Yi-Gang, Hohnloser, Stefan H., Morady, Fred, Bogun, Frank M., Division of Cardiology, Department of Internal Medicine, JW Goethe University, Frankfurt, Germany; and the Cardiology Division, Department of Internal Medicine, University of Michigan Medical Center, Ann Arbor, Michigan, Bender, Birgit, Li, Yi-Gang, Hohnloser, Stefan H., Morady, Fred, and Bogun, Frank M.

Published
2010

5. Mechanism of Ventricular Tachycardia Termination by Pacing at Left Ventricular Sites in Patients with Coronary Artery Disease

Author

Division of Cardiology, University of Michigan Medical Center, Ann Arbor, MI, Division of Cardiology, J.W. Goethe University, Frankfurt, Germany, Ann Arbor, Bogun, Frank, Hohnloser, Stefan H., Bender, Birgit, Li, Yi-Gang, Groenefeld, Gerian, Pelosi, Frank, Oral, Hakan, Knight, Bradley P., Strickberger, S. Adam, Morady, Fred, Division of Cardiology, University of Michigan Medical Center, Ann Arbor, MI, Division of Cardiology, J.W. Goethe University, Frankfurt, Germany, Ann Arbor, Bogun, Frank, Hohnloser, Stefan H., Bender, Birgit, Li, Yi-Gang, Groenefeld, Gerian, Pelosi, Frank, Oral, Hakan, Knight, Bradley P., Strickberger, S. Adam, and Morady, Fred

Abstract

Objective: The mechanism by which pacing terminates ventricular tachycardia (VT) may depend on the location of the pacing site relative to the reentry circuit. The purpose of this study was to compare the mechanisms by which pacing terminates VT at left ventricular (LV) sites with and without concealed entrainment (CE) in patients with prior myocardial infarction.

Published
2006

6. Analysis During Sinus Rhythm of Critical Sites in Reentry Circuits of Postinfarction Ventricular Tachycardia

Author

Division of Cardiology, University of Michigan Medical Center, Ann Arbor, MI, USA, Division of Cardiology, J.W. Goethe University, Frankfurt, Germany, Ann Arbor, Bogun, Frank, Bender, Birgit, Li, Yi-Gang, Groenefeld, Gerian, Hohnloser, Stefan H., Pelosi, Frank, Knight, Bradley P., Strickberger, S. Adam, Morady, Fred, Division of Cardiology, University of Michigan Medical Center, Ann Arbor, MI, USA, Division of Cardiology, J.W. Goethe University, Frankfurt, Germany, Ann Arbor, Bogun, Frank, Bender, Birgit, Li, Yi-Gang, Groenefeld, Gerian, Hohnloser, Stefan H., Pelosi, Frank, Knight, Bradley P., Strickberger, S. Adam, and Morady, Fred

Abstract

Background: Critical sites within reentry circuits of postinfarction ventricular tachycardia (VT) were identified during sinus rhythm (SR) and VT to determine whether electrogram characteristics during SR may be helpful in identifying successful ablation sites.

Published
2006

10. Location of the Lower Turnaround Point in Typical AV Nodal Reentrant Tachycardia: A Quantitative Model.

Author

Yi-Gang Li, Bender, Birgit, Bogun, Frank, Grönefeld, Gerian, and Hohnloser, Stefan H.

Subjects
ATRIOVENTRICULAR node, TACHYCARDIA, HIS bundle, PATIENTS, CARDIAC pacing, ARRHYTHMIA
Abstract

Introduction: Recent observations .suggest that the circuit of AV nodal reentrant tachycardia (AVNRT) may extend down to the His bundle. The purpose of this study was to develop a quantitative model indicating the location of the lower turnaround point in AVNRT. Methods and Results: Slow pathway modification was performed in 70 patients with typical AVNRT. During sinus rhythm, ventricular pacing was performed with the AVNRT cycle length. During AVNRT. the HinitAinit interval was measured from initial His to the initial atrial deflection recorded in the His-hundle lead. During ventricular pacing, the HendAinit interval was measured from end of the His to the beginning of the atrial deflection. It was hypothesized that x reflects conduction time from the lower turnaround point to Ainit, whereas y reflects conduction time from the lower turnaround point to Hinit. Anterograde conduction during AVNRT and retrograde conduction during ventricular pacing were assumed to be identical if there was 1:1 retrograde conduction at the AVNRT cycle length. The following formulas describe the relation of the measured parameters: x - y = HinitAinit; and x + y = HendAinit. Resolving both formulas yields the unknown x and y: y = (HendAinit - HinitAinit)2, x = (HendAinit + HinitAinit)/2. These criteria were present in 52 of 70 patients. The mean cycle length of AVNRT was 355 ± 42 msec, mean HinitAinit was 54 ± 27 msec, and mean HendAinit was 60 ± 29 msec. Accordingly, in 20 of 52 patients, the lower turnaround point was located within the His bundle (y = -15.4 ± 16.1 msec), in 3 of 52 it was in the nodal-His junctional area (y = 0), and in 29 of 52 it was above the His bundle (y = +12.7 ± 10.3 msec). The HinitAinit interval was significantly longer (66 ± 32 msec vs 47 ± 20 msec; P = 0.02) and the HendAinit interval was significantly shorter (45 ± 30 msec vs 69 ± 24 msec; P = 0.004) when the first group was compared with the others. Conclusion: In about I of 3 of patients with typical AVNRT, the lower turnaround point of the circuit is within the His bundle; in more than half of the patients it is above the His bundledata do not support the concept that all AVNRTs have an intranodal circuit, but are in accordance with the finding of longitudinal dissociation of the His bundle. [ABSTRACT FROM AUTHOR]

Published
2000
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results