Order of amplitude of applied voltages, and inducted currents required to stimulate VF

 

Voltage = Current x Resistance

 

Macroshock

Effects of hand-to-hand 50 Hz alternating current

 

(mA)

Effect

 

1

Tingling sensation

 

5

Pain

 

15

Severe pain, local muscle spasm

 

50

Respiratory muscle spasm

 

80—100

Dysrhythmias with pump failure leading to VF

 

 

Microshock

Maximum allowable leakage current

< 10 mA

To induce VF:

100 mA