GOOD TO KNOW, to say the least!

(RELATIVE) CONTRAINDICATIONS:

• Cardioversion is unlikely to be successful and may be harmful in dysrhythmias due to enhanced automaticity (i.e. digoxin toxicity) because a homogenous depolarization state already exists
• Cardioversion is usually not only ineffective but is associated with a higher incidence of post-shock VT/VF.  Medications are usually more effective than cardioversion to control the rate/convert the rhythm.