Portable Defibrillator Information

A defibrillator is a medical device for defibrillation and cardioversion. It can be targeted by power surges, and cardiac arrhythmias such as ventricular fibrillation (defibrillation) or ventricular tachycardia, atrial portable defibrillator fibrillation and atrial flutter (cardioversion end). Defibrillators will be ready in intensive care in emergency rooms, many other places in the hospital and in vehicles of the emergency services and many doctors' offices since the 1990s increasingly also in many public buildings such as railway stations, airports and other locations for use by medical laymen. Also, there are already offers devices for private homes, since they can be operated by voice instructions by any person and such emergencies occur mostly at home.

In 85 percent of all sudden cardiac death at first exists a so-called ventricular fibrillation. A defibrillator can interrupt this circular electrical stimulation in the heart by simultaneous stimulation of at least 70 percent of all cardiac muscle cells. In a large number of cells simultaneously depolarized, which means that these cells (a relatively long time about 250 ms = refractory period of the cells) portable defibrillator are no longer excitable. The rotating shaft is virtually cut off the road and my heart is back in a state in which can take the natural conduction stimulation of the heart again. Essential for them to defibrillation is the earliest possible deployment, as the ventricular fibrillation caused by the undersupply of the brain can lead to oxygen (Gehirnischämie) within a short time to massive neurological deficits. For this reason, be placed in the public space increasingly automated external defibrillators (AED). The successful use of an AED stands or falls with the correct implementation of the cardio-pulmonary resuscitation. The AED is only a complement to, not substitutes.

Portable Defibrillator History

The first attempts at portable defibrillator resuscitation by an electric shock dating from 1788, although we naturally ale concept of how. The rhythm disorder responsible for sudden death was suspected in 1849 by Ludwig and Hoffa and fibrillation is the term created by the French Edmé Vulpian in 1874.

In 1899, we note that one can induce ventricular fibrillation by electric shocks and can stop this latest suit.

Carl Wiggers first system tests on animals in the late 1940.

Claude Beck did the first alternating current defibrillation success during an operation on his heart in 1947. Naum Gurvich in 1939 proves that the use of a DC is more effective and less dangerous. This technique will be widely used later in the USSR but only a few decades later than in Western countries. It portable defibrillator also tests the biphasic shock for the first time. It designs and the first external defibrillator since 1952.

In 1959 Bernard Lown performs the first shock to the reduction of atrial fibrillation. He will introduce in the Western technique of defibrillation by direct current, used today.

In 1960 was built in Paris the first external pacemaker connected to a defibrillator. At the same time, Bernard Lown is the first to use the defibrillator to treat ventricular tachycardia (in either ventricular fibrillation).

In 1966 was manufactured transportable system can be set palc in an ambulance and used outside the hospital. Early models portable defibrillator were nearly 70 kg, but passing quickly under the 5 kg with progs miniaturization.

The first semi-automatic defibrillators appear in the 1980.