Defibrillators: A ‘must have’ ambulance device

Whenever the heart beat goes insane alarm bells start ringing. They, in most cases, lead to fatalities. In such a situation a defibrillator is used to calm things down and bring the heart back on track. Traditionally used mostly by trained medical practitioners, it is now increasingly being used by common people thanks to their easy availability and ease of use. Defibrillators are used to generate electric shocks that bring heart beat in rhythm. To understand its significance and working one has to know a little about how human heart works.

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A healthy human heart beats about 60 times a minute, that’s 1 beat a second. This means that the heart opens and closes once every second, pumping blood in and out. But what if the rate increases? Now the heart has to open and close even faster. A time comes when the rate becomes so fast that the heart doesn’t get enough time to pump blood out. Furthermore it must be understood that blood flow path is guided by electrical signals. But sometimes a sudden impulse leads to irregularities that block the path of blood circulation. This leads to drop in cardiac output called as Ventricular fibrillation or VF. This is pretty much the scenario which necessitates use of defibrillators.

By sending a strong electrical shock wave, defibrillator forces each cardiac cell to ‘return’ to their original states thus restoring the heart rate. There is, of course, a gap of few seconds between application of shock and emergence of normal heart beat. Traditionally used only in ambulances and hospitals by doctors, they have become a common medical equipment at almost every venue, whether it be playground, hospital, schools etc. But perhaps it’s most important application is seen in ambulances especially the ones suited for life-threatening conditions like MICU or ICU ambulance services. Aware of its importance many ambulance service providers and ambulance aggregator websites like have made it mandatory on their fleet of air ambulances, ground ambulances and even private ambulances.

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