Defibrillators: voltage and current?

Having just attended an annual resuscitation training session we were talking roughly defibrillators and their output. This is always measured in joules i.e 200,300,360 joules but I can't relate to joules as a measure of vigour. I know that there is a danger of electric shock from these machines, but does anybody know what their output is in expressions of volts and amps? I have asked this before at these sessions, but the trainers always newly shrug and scratch their heads and admit that they don't know.
Answers:
A joule is a measure of size equivalent to an amp second. 300joules is the amount of electricity which flows is the current is 300amps for 1 second - or 1amp for 300 seconds.
I think it's about 700, but according to online sources, the voltages can continuum 200 to 1,700 volts. And these shocks can be repeated up to three times. It can also be measured in joules, the lowest being 40–60 Joules, but must not exceed 360–400 J. Usually 100 to 360 joules are used. Anything above 400 would be detrimental. Source(s): Cardiac Nurse
In 1959 Bernard Lown commenced research into an alternative technique which involved charging of a mound of capacitors to approximately 1000 volts with an energy content of 100-200 joules then deliver the charge through an inductance such as to produce a heavily damped sinusoidal wave of finite duration (~5 milliseconds) to the heart by way of 'paddle' electrodes. The work of Lown be taken to clinical application by engineer Barouh Berkovits with his "cardioverter".
Cardioversion: electric current administered in synchrony near the patient's own QRS complex to stop a dysrhythmia.
Defibrillation: electrical current administered to stop a dysrhythmia, not synchronized with the patient's QRS complex. Source(s): http://www.nlm.nih.gov/medlineplus/ency/…
http://www.nlm.nih.gov/medlineplus/ency/…
http://en.wikipedia.org/wiki/Defibrillat…
http://en.wikipedia.org/wiki/Automated_e…
http://en.wikipedia.org/wiki/Implantable…
http://en.wikipedia.org/wiki/Cardioversi…
http://books.google.co.in/books?id=1ooLU…
Not sure about this. What V, OKA? 1 Volt?
I worked from non-understable basics and come up with 300J flash would be 1/10 second flash of 3000V (a) 1A.
The voltages can range from 200 to 1,700 volts
The shock to the chest is also measured in joules. This total is a measurement of energy and is different from the voltage. Research shows the energy can start sour as low as 40–60 J but can not be greater than 360–400 J.
Approximately 1000 volts has an an energy content of 100-200 joules

Amps is a measure of how much electricity per second.
Volts is a gauge of how much pressure they have.
You could have lots of amps with singular a little voltage, or
lots of amps with lots of voltage.
You could have lots of voltage near only a few amps, or
lots of voltage with lots of amps.
Or any combination.

Joules are a measure of sparkle.
1 volt times 1 amp, for 1 second = 1 joule.
1 volt times 1 amp, for 100 seconds = 100 joules.
Volts is a measure of how much pressure they have.
One watt is equal to one joule per secon Source(s): http://muller.lbl.gov/teaching/Physics10…

http://www.pubmedcentral.nih.gov/article…

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