Comparison of rectilinear biphasic waveform energy versus truncated exponential biphasic waveform energy for transthoracic cardioversion of atrial fibrillation

Kim, Maureen L.; Kim, Soo G.; Park, David; Gross, Jay N.; Ferrick, Kevin J.; Palma, Eugen C.; Fisher, John D.

doi:10.1016/j.amjcard.2004.07.149

Cited by 21 publications

(16 citation statements)

References 4 publications

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“…These studies differ in the energy delivery protocols, electrode configurations, and waveform characteristics but uniformly have found that biphasic shocks are more effective than monophasic. This advantage is present whatever the precise waveform; indeed two recent studies have directly compared biphasic shock waveforms and found no difference in efficacy 72,73 . Biphasic shocks have a higher success rate than monophasic, with lower energy, lower current, and less skin and muscle damage.…”

Section: Improving Immediate Cardioversion Successmentioning

confidence: 99%

Electrical Cardioversion for AF—The State of the Art

Gall

Murgatroyd

2007

Pacing Clinical Electrophis

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Section: Improving Immediate Cardioversion Successmentioning

confidence: 99%

Electrical Cardioversion for AF—The State of the Art

Gall

Murgatroyd

2007

Pacing Clinical Electrophis

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“…In RBW, shown in Fig. 6,28 But, all studies agree that both the peak and mean currents of the RBW are less than other monophasic and biphasic waveforms. 22 Some studies have shown that RBW is more e±cient in comparison with other waveforms.…”

Section: Introductionmentioning

confidence: 60%

Generation of Rectangular Biphasic Waveform to Decrease Defibrillation Threshold for External Defibrillator

Kavousi

Saba

2012

Biomed. Eng. Appl. Basis Commun.

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Studies have shown that de¯brillation threshold for current amplitude of biphasic truncated exponential (BTE) waveform has a hyperbolic strengthÀduration relationship. Theoretical and experimental results have shown that decreasing the tilt of BTE waveforms decreases the de¯brillation threshold. On the other hand, low peak current waveform reduces probability of myocardium damage and burn. Therefore, achieving a waveform with low tilt and low peak current is desired. All DC de¯brillators use a capacitor to store and deliver required energy. Because of capacitor discharging nature, the tilt of waveforms is high. In rectilinear biphasic waveform (RBW), which was generated by ZOLL M-series de¯brillator, the tilt of the¯rst phase was decreased using an adjustable resistor connected in series with current path. But the de¯brillator cannot keep the current constant in the second phase and in the both phases for high transthoracic impedances (TTI) either. In this paper, for solving these problems, a circuit that generates rectangular biphasic waveform is designed. In this circuit,¯ve resistors are used and connected in series. Then an IGBT switch is connected to each resistor in parallel. Also, control of minimum current ripple is applied in order to decide which resistors should be worked in each time. The circuit is simulated in MATLAB/Simulink and a prototype model is constructed. Results demonstrate that the tilt of the waveform is notably reduced to a value less than 10%.

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“…Until further evidence becomes available, this information can be used to extrapolate biphasic cardioversion doses to other tachyarrhythmias. [135][136][137][138] A recent prospective randomized study that compared the rectilinear biphasic waveform (200 J maximum selected energy) with a biphasic truncated exponential waveform (360 J maximum energy) for elective cardioversion found no significant differences in efficacy between the 2 waveforms. 134 …”

Section: Supraventricular Tachycardias (Reentry Svt)mentioning

confidence: 99%

Part 5: Electrical Therapies

2005

Circulation

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Comparison of rectilinear biphasic waveform energy versus truncated exponential biphasic waveform energy for transthoracic cardioversion of atrial fibrillation

Cited by 21 publications

References 4 publications

Electrical Cardioversion for AF—The State of the Art

Electrical Cardioversion for AF—The State of the Art

Generation of Rectangular Biphasic Waveform to Decrease Defibrillation Threshold for External Defibrillator

Part 5: Electrical Therapies

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