February 4, 2023
Cardioversion Explained In Detail

Cardioversion Explained In Detail

Cardioversion Explained: Cardioversion is a medical procedure by which an abnormally fast heart rate and other cardiac arrhythmia are converted to a normal rhythm using electricity or medicines. It is done at a specific moment of the cardiac cycle to restore the heart’s electrical conduction system by using a therapeutic dose of electric current.

In this procedure, electric shocks are sent to the heart through the electrodes by placing them on the chest. Medications are also used in cardioversion. The cardioversion process is done in the hospital because it is a scheduled procedure.

Why is Cardioversion Done?

Cardioversion is generally done to correct the irregular heart rhythm (arrhythmia) or too fast (tachycardia) and irregular. In addition, people having atrial fibrillation or atrial flutter are treated by using a cardioversion procedure. Sometimes cardioversion is done in emergencies despite being a scheduled procedure.

Electric cardioversion is done with electric shocks through electrodes by attaching the electrodes to the chest when the patient is sedated. Electric cardioversion takes less time than medications. If the doctor suggests cardioversion with medications, electric cardioversion is not required.

The cardioversion procedure is an emergency procedure and is different from defibrillation. Defibrillation shock is more powerful than cardioversion which also corrects the heart rhythm. Cardioversion is generally performed when the heart stops and quivers uselessly.

Preparation for Cardioversion

Cardioversion is a scheduled procedure and is generally performed in the hospital. So doctors and patients should be prepared to complete this process successfully. In this process:

  • Stop eating and drinking eight hours before the procedure starts.
  • The doctor will tell the patient to take regular medicines and to sip enough water to swallow the pills.
  • A transesophageal echocardiogram is done to check for a blood clot in the heart before cardioversion. This blood clot can be broken free by cardioversion, which can be life-threatening.
  • If blood clots are found in the heart, the doctor will delay for three to four weeks, and the patient will be suggested to take blood-thinning medications during that period.
  • Cardioversion can also be done during pregnancy, but the baby’s heartbeat is monitored during this procedure.

Cardioversion Procedure A to Z

The cardioversion procedure is done in the hospital. This process should be done by maintaining a procedure. This procedure is done step by step. Those are during the procedure:

  • Medications are given to the patient through an IV to make the patient sleep and not feel the shock.
  • Medications are also given through the IV to restore the patient’s heart rhythm.
  • A nurse or technician places several patches called electrodes on the chest.
  • Wires connect the electrodes and cardioversion machine. The machine records heart rhythm and delivers a shock to restore a normal heart rhythm. It also normalizes the heart rhythm if it beats slowly after cardioversion.
  • It takes only a few minutes to be complete after sedation.

After Cardioversion Procedure:

  • The patient can go home after completing the procedure.
  • Patients should spend just an hour in the recovery room closely monitoring complications.
  • The patient should take rest after going home.
  • The patient should take blood-thinning medications after the procedure for several weeks to prevent further blood clots.
cardioversion procedure

Cardioversion Procedure (Image: Mayo Clinic)

Risk Factor of Cardioversion

Some uncommon risks are created for cardioversion, and doctors can take some steps to reduce the risks. Some major cardioversion generated for cardioversion are:

  • People having irregular heartbeats also have clots in the blood. Electric cardioversion can cause this clot to move to other body parts and cause life-threatening complications such as stroke or blood clots traveling to the lungs.
  • Some people with cardioversion will develop heart rhythm problems during or after the process, although it is rare. If it happens, doctors suggest taking medications or additional shocks to correct the problem.
  • Some people may have minor burns on their skin where the electrodes are set up. However, it is also a rare case.

Result of Cardioversion

Cardioversion has a positive result and will restore a regular heartbeat very quickly. However, some additional medications are also needed to keep the heartbeat normal.

After cardioversion, a doctor will suggest modifying a lifestyle to improve heart health and prevent conditions that can cause arrhythmias, such as high blood pressure. Lifestyle modifications can be done by:

  • Avoiding or limiting caffeine.
  • Avoiding consumption of alcohol.
  • Taking a heart-healthy diet.
  • Increasing physical activity.
  • Maintaining a healthy weight.
  • Quitting smoking.
  • Managing stress and anger.
  • Using less salt which can cause high blood pressure.

Cardioversion is a treatment that solves heart tachycardia (heartbeat that is too fast) and fibrillation (irregular heartbeat). Cardioversion is usually done by electric shock. The shock is given through electrodes attached to the chest.

It is a straightforward test without pain and much time. The test restores regular heartbeat within a short time. Medications also help to solve the problem. If the doctor recommends cardioversion with medications, they won’t receive electric shocks.

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