Defibrillation Using a High‐Frequency Series of Monophasic Rectangular Pulses: Observations and Model Predictions

High‐Frequency Defibrillation. Introduction: Capacitor‐discharge type waveforms are practical for defibrillation devices but may not be optimum. Discharging a capacitor as a series of high‐frequency (HF) pulses may allow effective waveform shaping by modulating the pulses. This approach could lead to improved defibrillation by allowing waveforms that would otherwise be unachievable with a capacitor‐discharge approach. However, little is known about defibrillation with HF.

[1]  R. Fletcher,et al.  Characterization of Ventricular Fibrillation Based on Monophasic Action Potential Morphology in the Human Heart , 1993, Circulation.

[2]  W. Krassowska,et al.  Choosing the Optimal Monophasic and Biphasic Waveforms for Ventricular Defibrillation , 1995, Journal of cardiovascular electrophysiology.

[3]  R. Sweeney,et al.  The Defibrillation Threshold: A Comparison of Anesthetics and Measurement Methods , 1993, Pacing and clinical electrophysiology : PACE.

[4]  L A Geddes,et al.  Strength-duration curves for trapezoidal waveforms of various tilts for transchest defibrillation in animals. , 1978, Medical instrumentation.

[5]  Geddes La,et al.  Ventricular fibrillation and defibrillation. , 1983 .

[6]  P R Reid,et al.  Ventricular refractory period extension caused by defibrillation shocks. , 1990, Circulation.

[7]  A. M. Dolan,et al.  Transthoracic Ventricular Defibrillation with Square‐wave Stimuli: One‐Half Cycle, One Cycle, and Multicycle Waveforms , 1964, Circulation research.

[8]  W. Druz.  The design rationale of defibrillators. , 1969, JAAMI : journal of the Association for the Advancement of Medical Instrumentation.

[9]  W. Irnich,et al.  The Fundamental Law of Electrostimulation and its Application to Defibrillation , 1990, Pacing and clinical electrophysiology : PACE.

[10]  John C. Schuder,et al.  Transthoracic Ventricular Defibrillation with Triangular and Trapezoidal Waveforms , 1966 .

[11]  L. Geddes,et al.  Bipolar catheter defibrillation in dogs using trapezoidal waveforms of various tilts. , 1980, Journal of electrocardiology.

[12]  M W Kroll,et al.  A Minimal Model of the Single Capacitor Biphasic Defibrillation Waveform , 1994, Pacing and clinical electrophysiology : PACE.

[13]  Patrick D. Wolf,et al.  Pacing Thresholds for Cathodal and Anodal High-Frequency Monophasic Pulses , 1992 .

[14]  H. A. Blair.  ON THE INTENSITY-TIME RELATIONS FOR STIMULATION BY ELECTRIC CURRENTS. I , 1932, The Journal of general physiology.

[15]  G. Weiss.  Sur la possibilite de rendre comparables entre eux les appareils servant a l'excitation electrique. , 1990 .

[16]  L. Geddes,et al.  Ability of the Lapicque and Blair strength-duration curves to fit experimentally obtained data from the dog heart , 1989, IEEE Transactions on Biomedical Engineering.

[17]  P D Wolf,et al.  Is the Second Phase of a Biphasic Defibrillation Waveform the Defihrillating Phase? , 1993, Pacing and clinical electrophysiology : PACE.

[18]  M. Kroll,et al.  A Minimal Model of the Monophasic Defibrillation Pulse , 1993, Pacing and clinical electrophysiology : PACE.

[19]  L. Geddes,et al.  Strength‐Duration Curves for Ventricular Defibrillation in Dogs , 1970, Circulation research.