How Do Defibrillators Work?

We all are aware of the fact that electric current can be dangerous enough to kill an individual. On the contrary, current passed through the human body using defibrillators can save lives.

Defibrillators, as the name suggests, is an electrical device that stops fibrillation – a condition wherein the human heart starts beating erratically, generally during cardiac arrest. Almost every hospital will be equipped with this device to handle emergencies. However, those that don’t have one can easily find good quality defibrillator for sale. There are some defibrillators that can be used without the help of a medical professional. Before using it, it’s important to understand how these devices work.

In simple words, a defibrillator works by making use of a moderately high voltage (say in the range of 200 – 1000 volts) to send an electrical current through the heart. This way, the heart is shocked into functioning normally again. The heart of a patient receives electrical energy of around 300 joules.

Defibrillators typically comprise of two metal electrodes known as paddles and one electrical supply unit. The paddles are firmly pressed to the chest of the patient with the help of insulated plastic handles. The electrodes need to be applied very close together to ensure that the current flows properly and cut down the risk of skin burns. With this, the current flows through the heart of the patient. Medical professionals usually apply a conductive gel for maximising the electricity flow to the patient. This current flow can stop the uncontrolled trembling of the heart and reset the beats back to normal.

There are certain defibrillators that are devised to be used by people who are less trained. Such devices come with self-adhesive, sticky electrode pads in place of paddles for simplicity and safety. The operator can stick on the pads and then stand away from the body of the patient to reduce to risk of suffering an electric shock.

These electrical devices are turning out to be very common these days and are responsible for saving several lives.