Electrical cardioversion is a procedure that uses an electric
current to stop the heart momentarily. This helps the heart attain a normal
rhythm when it resumes beating.
Usually a person is given a sedative before the procedure. Then a
device called an external defibrillator-which consists of metal paddles or
pads-is placed on the person's chest. The external defibrillator sends the
electrical current to the heart. Health professionals are prepared to help
maintain a person's circulation during the procedure with medications and other
methods.
Cardioversion may be used to help the heart return to a normal
rhythm after medications have failed to do so. The procedure also may be done
in emergency situations, such as to correct a fast heart rhythm that is causing
low blood pressure, chest pain, or heart failure.
