January 15, 2021Scientific ReportsOpen Access

A framework of current based defibrillation improves defibrillation efficacy of biphasic truncated exponential waveform in rabbits

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Why the study?

Although current-based defibrillation proved superior to energy-based defibrillation with monophasic waveforms, biphasic defibrillators still use energy as the therapeutic dosage.

Does current-based biphasic defibrillation improve defibrillation efficacy compared to energy-based defibrillation in a rabbit model of ventricular fibrillation?

Population

24 New Zealand rabbits (10 males) in a simulated high impedance VF model

Comparison

Current-based defibrillation vs energy-based defibrillation

Design

Animal experimental study

Authors

WLWei‐Ming LiGuangxi University JLJingru LiXinjiang Medical University JWJianjie WangChina Meteorological Administration

Discussion

Member takes

Implication

Hypothesis-generating in high-impedance animal VF; leaves open clinical translation and human efficacy trials.

Structured PICO

Does current-based biphasic defibrillation improve defibrillation efficacy compared to energy-based defibrillation in a rabbit model of ventricular fibrillation?

Population

24 New Zealand rabbits (10 males, weighing 1.8-2.4 kg) in a simulated high impedance ventricular fibrillation (VF) model.

Intervention

Current-based biphasic truncated exponential (BTE) defibrillation using a custom prototype (210 μF capacitor), adjusting charging voltage and pulse duration based on pre-shock and intra-shock transthoracic impedance.

Comparator

Energy-based BTE defibrillation (HeartStart XL+ defibrillator) compensating for increased impedance by prolonging shock duration.

Outcome

Defibrillation thresholds (DFTs) of energy, peak voltage, peak current, and average current.surrogate

Current-based biphasic defibrillation significantly lowers the energy, peak current, and peak voltage required for successful defibrillation in high-impedance scenarios compared to standard energy-based defibrillation in a rabbit model.

Cite This Study

Li et al. (2021) studied this question.

synapsesocial.com/papers/6a838415df262e78b07212ec https://doi.org/10.1038/s41598-020-80521-9

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A framework of current based defibrillation improves defibrillation efficacy of biphasic truncated exponential waveform in rabbits

Discussion

Member takes

Implication

Structured PICO

Cite This Study

A framework of current based defibrillation improves defibrillation efficacy of biphasic truncated exponential waveform in rabbits

Discussion

Member takes

Implication

Structured PICO

Cite This Study

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