Introduction

Defibrillators are medical devices used to treat heart conditions such as ventricular fibrillation or ventricular tachycardia. These conditions can cause a chaotic electrical response in the heart, which can lead to cardiac arrest if not treated quickly. Defibrillators deliver an electrical shock to the heart to restore its normal rhythm.

What is a monophasic defibrillator?

A monophasic defibrillator is a type of defibrillator that sends an electrical shock through the heart in only one address. That is, the electric current flows from the positive to the negative electrode in a single phase. These defibrillators were the first to be used in medicine and are still used in some medical settings. However, they have some limitations.

Limitations of monophasic defibrillators

• The energy they deliver is limited, so multiple shocks may be necessary to restore normal heart rhythm.
• The shock waveform is abrupt and can damage heart tissue if used excessively.

What is a biphasic defibrillator?

A biphasic defibrillator, as its name suggests, sends an electrical shock through the heart in two directions or phases. In the first phase, the current flows in one direction and in the second phase, the current flows in the opposite direction, allowing the energy to be distributed more evenly throughout the heart.

Advantages of biphasic defibrillators

• They require less energy to restore normal heart rhythm.
• The shock waveform is softer, reducing the risk of damage to heart tissue.

What type of defibrillator is best?

The answer to this question is not simple. Each type of defibrillator has its advantages and disadvantages and your choice will depend on the needs of the patient and the circumstances of the medical environment in which what is used. In general, biphasic defibrillators are more common nowadays due to its effectiveness and lower risk of side effects.

Conclusion

In summary, although both monophasic and biphasic defibrillators have the same main function, there are important differences between them that can influence their safety and effectiveness. Biphasic defibrillators are a safer and more effective option in most situations.

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