What is a defibrillator (AED)? How to use a defibrillator, and defibrillator prices

1. Defibrillators and Their Basic Functions

This is a specialized medical device designed to emit high-intensity electric pulses to restore normal heart rhythm when the heart stops beating or enters a state of dangerous ventricular fibrillation. The machine delivers an electric shock strong enough to help the heart automatically reset to a regular beat, preventing the patient from succumbing to sudden cardiac arrest.

A defibrillator can pull patients back from the brink of death

2. Operating Principle of a Defibrillator

Defibrillators operate by delivering a brief high-voltage electric shock through two electrode pads placed on the patient's chest. When the heart goes into ventricular fibrillation, heart muscle cells contract chaotically without rhythm, preventing the heart from pumping blood effectively.

The electric pulse from the AED temporarily "shuts down" all electrical activity in the heart, allowing the sinoatrial node—the heart's natural pacemaker—the opportunity to restart and establish a normal rhythm.

3. Why AEDs Are Increasingly Widely Used in Vietnam

3.1. Easy to Use – No Medical Expertise Required

AEDs are designed so that anyone can use them to maximize survival chances within the community. Users simply need to turn the device on and follow the voice prompts, which guide them step-by-step in a clear and easy-to-understand manner.

The machine automatically analyzes the heart rhythm and decides whether a shock is needed, completely eliminating the need for complex medical judgment. As a result, even those with no prior training can confidently use the device in an emergency without fear of making mistakes or harming the patient.

3.2. Compact Design – Portable and Fits Any Space

Modern AED models are designed to be compact and lightweight, weighing only 1.5–3 kg, making them easy to carry and install in any location. They can be wall-mounted in dedicated protective cabinets in hallways and lobbies, or stored in medicine cabinets and ambulances without taking up much space.

This high portability ensures the AED can be quickly transported to wherever a victim is located—from the ground floor to high-rise levels, from offices to sports fields—ensuring timely intervention within the "golden 5 minutes" to save the patient from death.

The compact design of the Nihon Kohden 3100 facilitates easy first aid

3.3. Reducing Sudden Cardiac Arrest Mortality by up to 70%

Medical studies show that the survival rate of sudden cardiac arrest victims increases significantly when an AED is used within the first 3–5 minutes, potentially reaching up to 70%, compared to just 5–10% if waiting for an ambulance.

In Vietnam, the increasingly common installation of AEDs in public places, businesses, and communities has contributed to saving many lives, while also raising awareness about the importance of timely first aid.

4. Top 3 Most Popular Defibrillator Models in 2025

4.1. AED NT381C: Affordable and Compact

This model is equipped with a clear automated Vietnamese voice guidance system, helping users without medical knowledge to act confidently in emergencies. The battery has a lifespan of up to 5 years, minimizing maintenance and frequent replacement costs. Although it does not feature an ECG display like high-end models, the NT381C fully meets basic functions for analyzing heart rhythm and delivering effective life-saving shocks.

4.2. Nihon Kohden AED-3100: Quality with High Precision

This machine possesses advanced heart rhythm analysis technology with rapid processing speed and superior accuracy, helping to shorten critical response time. Its sturdy, durable design uses high-grade materials to ensure stable operation for many years, even in harsh environmental conditions.

This is the top choice for professional medical facilities such as hospitals and clinics, as well as crowded public locations like airports, shopping centers, and industrial zones.

4.3. Zoll AED Plus: Meticulous with Smart CPR Guidance

The Zoll AED Plus represents top-tier emergency technology from the United States. A unique feature of this model is the integrated smart CPR feedback sensor—exclusive technology that evaluates chest compression quality in real-time and provides immediate feedback. A large LCD screen displays detailed visual CPR instructions, helping rescuers adjust their technique to achieve optimal effectiveness for the victim.

Integrated CPR guidance on the Zoll AED Plus makes first aid easier

AED defibrillators have gradually become indispensable devices in daily life. Therefore, selecting a product that fits your needs and purpose is essential before making a purchase. Wellbeing hopes that this article has provided you with a better perspective before buying an AED.