Automated defibrillators save lives and the defibrillator circuit provides the needed energy to do so. Defibrillators shock the heart back into a normal heart rhythm after a disruption such as cardiac arrest. Research shows that in order to best save lives, a unit has to provide a shock fast, at the proper dose, and adjust to changing obstacles.
In a portable automated defibrillator, such as those used in schools and other businesses, the source of electricity for the shock is a battery. But in order to transfer that energy to a patient in a beneficial waveform, a defibrillator circuit needs to operate. The waveform can be thought of a changing pattern in the current, so that a correct dose is administered throughout the shock and despite any impedance that the shock encounters.
The circuitry in the defibrillator connects the charge between the battery and the patient's chest. The current flows through the defibrillator pads to shock the heart. People often think that a person's body weight increases impedance to the current, creating a situation where more electricity is needed to provide a correct and consistent shock to the heart. However, research has not backed this up. The American Heart Association states that there is no evidence of a relationship between body weight and impedance.
Many defibrillators are now using a biphasic waveform rather than the older monophasic waveform. In a biphasic defibrillator, the circuit sends an electrical current that follows from paddle to paddle in both directions. With monophasic waveforms, the current went only from one paddle to the other, but it did not return in the other direction. Research has shown that biphasic waveforms are more effective.
Patients with an implanted defibrillator do need to be cautious if they receive radiation therapy. The radiation can potentially damage the defibrillator circuit, but this can be prevented if the area is shielded or moved to another area. In general, today's models are not effected by interference from other sources, like microwaves.
A defibrillator circuit is an important part of the defibrillator. Without the circuit, the defibrillator would not be able to deliver a therapeutic dose of electricity to the heart. Thus, it could be said that the defibrillator circuit is the reason lives are saved by shocks to the heart.
New Dunlop K555 Good Bargain Long Trail Brewery Good Sharp Lc60e88un
No comments:
Post a Comment