Sun
19
Apr

Cardioversion

The delivery of an electric shock to the chest via electrodes or paddles in order to correct a dangerous heart arrhythmia. An arrhythmia is an abnormality or loss of the heartbeat.

Cardioversion can be done as an elective (scheduled) procedure, or may be done urgently if an arrhythmia is immediately life threatening.

Parts of the Body Involved

Chest wall and heart

Reasons for Procedure

Certain heart arrhythmias may prevent the normal circulation of blood through the body, and may deprive various organs, including the brain and heart, of oxygen.

Elective cardioversion may be used to treat the following conditions:
  • Atrial fibrillation - rapid, irregular twitching in the atrium
  • Atrial flutter - rapid contractions in the atrium
Urgent cardioversion may be used to treat the following types of arrhythmias, which can lead to death if they are not immediately converted to a more normal rhythm:
  • Ventricular tachycardia - rapid beating of the heart, originating in the ventricle
  • Atrial tachycardia - rapid beating of the heart, originating in the atrium
  • Ventricular fibrillation - rapid movement of the ventricular muscle

Risk Factors for Complications during the Procedure

  • Improperly maintained cardioverter, which delivers more or less charge than intended
  • Blood clots in the heart chambers that may be discharged into circulation during cardioversion

What to Expect

Prior to Procedure

Elective cardioversion:
  • You will have an electrocardiogram (ECG, EKG)

Outcome

Cardioversion usually results in a more normal heart rhythm

Call Your Doctor If Any of the Following Occurs

  • Blisters, redness, or open sores on your chest
  • Lightheadedness, dizziness
  • Confusion
  • Sensation of your heart fluttering (palpitations)
  • Sensation of a skipped or missed beat, or an irregular pulse
  • Cough, difficulty breathing, shortness of breath
  • Severe nausea or vomiting
  • Chest pain or pain in your left arm or jaw
  • Pain in your abdomen, back, arms, or legs
  • Blood in your urine
  • Changes in vision or speech
  • Difficulty walking or using your limbs
  • Drooping facial muscles