Search Results - "Swerdlow, C D"

Cycle length dependence of human action potential duration in vivo. Effects of single extrastimuli, sudden sustained rate acceleration and deceleration, and different steady-state frequencies by Franz, M R, Swerdlow, C D, Liem, L B, Schaefer, J

“…Using a new method for long-term recording of monophasic action potentials from the human heart, we studied in 17 patients the effects on ventricular action…”
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Discrimination of ventricular tachycardia from sinus tachycardia and atrial fibrillation in a tiered-therapy cardioverter-defibrillator by Swerdlow, Charles D., Chen, Peng-Sheng, Kass, Robert M., Allard, Jean R., Peter, C.Thomas

“…Objectives. This study was conducted to evaluate criteria for discrimination of ventricular tachycardia from atrial fibrillation and sinus tachycardia in a…”
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Upper limit of vulnerability reliably predicts the defibrillation threshold in humans by CHUN HWANG, SWERDLOW, C. D, KASS, R. M, GANG, E. S, MANDEL, W. J, PETER, C. T, PENG-SHENG CHEN

“…The upper limit of vulnerability is the stimulus strength above which electrical stimulation cannot induce ventricular fibrillation even when the stimulus…”
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Atypical Atrioventricular Node Reciprocating Tachycardia Masquerading as Tachycardia Using a Left-Sided Accessory Pathway by Hwang, Chun, Martin, David J, Goodman, Jeffrey S, Gang, Eli S, Mandel, William J, Swerdlow, Charles D, Peter, C.Thomas, Chen, Peng-Sheng

“…Objectives. The study was performed to document that atrioventricular node reciprocating tachycardia (AVNRT) can be associated with eccentric retrograde…”
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Cardiovascular collapse caused by electrocardiographically silent 60-Hz intracardiac leakage current : Implications for electrical safety by SWERDLOW, C. D, OLSON, W. H, O'CONNOR, M. E, GALLIK, D. M, MALKIN, R. A, LAKS, M

“…The national standard for safe 60-Hz intracardiac leakage current under a single-fault condition is 50 microA. This standard is intended to protect patients…”
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Underdetection of ventricular tachycardia by algorithms to enhance specificity in a tiered-therapy cardioverter-defibrillator by Swerdlow, Charles D., Ahern, Thomas, Chen, Peng-Sheng, Hwang, Chun, Gang, Eli, Mandel, William, Kass, Robert M., Peter, C.Thomas

“…Objectives. The goal of this study was to determine the incidence and clinical significance of underdetection in 125 patients treated with a tiered-therapy…”
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Charge-burping theory correctly predicts optimal ratios of phase duration for biphasic defibrillation waveforms by SWERDLOW, C. D, FAN, W, BREWER, J. E

“…For biphasic waveforms, it is accepted that the ratio of the duration of phase 2 to the duration of phase 1 (phase-duration ratio) should be < or = 1. The…”
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Application of models of defibrillation to human defibrillation data: Implications for optimizing implantable defibrillator capacitance by SWERDLOW, C. D, BREWER, J. E, KASS, R. M, KNOLL, M. W

“…Theoretical models predict that optimal capacitance for implantable cardioverter-defibrillators (ICDs) is proportional to the time-dependent parameter of the…”
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Arrhythmia discrimination using hemoglobin spectroscopy in humans by Compton, S.J., MD, FHRS, Swerdlow, C.D., MD, FHRS, Canby, R.C., MD, Strobel, G.G., MD, Zagrodzky, J.D., MD, Cinbis, C., PhD, Carney, J.K., PhD, Bhunia, S.K., PhD

“…Background Inappropriate therapies are frequently delivered by implantable cardioverter-defibrillators (ICDs). We have investigated muscle perfusion as a means…”
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Upper limit of vulnerability is a good estimator of shock strength associated with 90% probability of successful defibrillation in humans with transvenous implantable cardioverter-defibrillators by Swerdlow, Charles D., Ahern, Tom, Kass, Robert M., Davie, Scott, Mandel, William J., Chen, Peng-Sheng

“…The goals of this study were to determine the probability of successful defibrillation at the upper limit of vulnerability and to evaluate a minimal safety…”
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Programming of implantable cardioverter-defibrillators on the basis of the upper limit of vulnerability by SWERDLOW, C. D, PETER, C. T, KASS, R. M, GANG, E. S, MANDEL, W. J, HWANG, C, MARTIN, D. J, CHEN, P.-S

“…A patient-specific measure of defibrillation efficacy that requires a minimum number of ventricular fibrillation (VF) episodes would be valuable for…”
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Relation between upper limit of vulnerability and defibrillation threshold in humans by PENG-SHENG CHEN, FELD, G. K, KRIETT, J. M, MOWER, M. M, TARAZI, R. Y, FLECK, R. P, SWERDLOW, C. D, GANG, E. S, KASS, R. M

“…In the canine model, an upper limit of shock strength exists that can induce ventricular fibrillation during the vulnerable period of the cardiac cycle. This…”
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Supraventricular Tachycardia-Ventricular Tachycardia Discrimination Algorithms in Implantable Cardioverter Defibrillators: State-of-the-Art Review by SWERDLOW, CHARLES D.

“…SVT‐VT Discrimination Algorithms in ICDs. To reduce inappropriate therapy of supraventricular tachycardia (SVT), implantable cardioverter defibrillators (ICDs)…”
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Implantation of cardioverter defibrillators without induction of ventricular fibrillation by SWERDLOW, Charles D

“…The upper limit of vulnerability (ULV) is the weakest shock at which ventricular fibrillation (VF) is not induced by a T-wave shock. This study tested the…”
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Optimal electrode configuration for pectoral transvenous implantable defibrillator without an active can by SWERDLOW, C. D, DAVIE, S, KASS, R. M, PENG-SHENG CHEN, CHUN HWANG, MANDEL, W. J, GANG, E. S, RAISSI, S, PETER, C. T

“…A new 83 cm3 implantable cardioverter-defibrillator (ICD) designed for pectoral implantation has been implanted most frequently using right ventricular and…”
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Differential electrophysiologic properties of decremental retrograde pathways in long RP' tachycardia by LERMAN, B. B, GREENBERG, M, OVERHOLT, E. D, SWERDLOW, C. D, SMITH, R. T. JR, DUNCAN SELLERS, T, DIMARCO, J. P

“…Long RP' supraventricular tachycardias (SVT) often demonstrate both slow and decremental conduction properties in the retrograde pathway of the reentrant…”
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Detection of atrial fibrillation and flutter by a dual-chamber implantable cardioverter-defibrillator by SWERDLOW, C. D, SCHSLS, W, DIJKMAN, B, JUNG, W, SHETH, N. V, OLSON, W. H, GUNDERSON, B. D

“…Background —To distinguish prolonged episodes of atrial fibrillation (AF) that require cardioversion from self-terminating episodes that do not, an atrial…”
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Amiodarone: clinical efficacy and toxicity in 96 patients with recurrent, drug-refractory arrhythmias by Fogoros, R N, Anderson, K P, Winkle, R A, Swerdlow, C D, Mason, J W

“…Ninety-six patients with recurrent, drug-refractory tachyarrhythmias were treated with amiodarone for 8.0 +/- 7.5 months (range 1 day to 27 months): 77 for…”
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Long-term outcome in patients who survive out of hospital ventricular fibrillation and undergo electrophysiologic studies: Evaluation by electrophysiologic subgroups by Poole, Jeanne E., Mathisen, Terri Lyn, Kudenchuk, Peter J., McAnulty, John H., Swerolow, Charles D., Bardy, Gust H., Greene, H.Leon

“…The long-term outcome of 241 survivors of out of hospital ventricular fibrillation who underwent programmed electrical stimulation was evaluated. Patients were…”
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Prognostic significance of the number of induced ventricular complexes during assessment of therapy for ventricular tachyarrhythmias by Swerdlow, C D, Winkle, R A, Mason, J W

“…We analyzed 255 long-term trials of antiarrhythmic therapy, each of which had been evaluated at electrophysiologic study, to identify the maximum number of…”
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