Under some abnormal
conditions, certain heart tissue is capable of starting a heartbeat, or becoming the
"pacemaker," just like the sinus node. An abnormal heartbeat (arrhythmia) may occur
The heart's natural pacemaker (the sinus node) becomes diseased and slows down
The normal conduction pathway is interrupted
Another part of the heart
takes over as pacemaker. This causes a faster or slower heartbeat.
Symptoms of an arrhythmia can
include a feeling that your heart is fluttering (heart palpitations), shortness of
breath, dizziness, or fainting.
You may need an ECG
(electrocardiogram) to assess the rhythm of the heart. This painless test records
electrical activity of your heart with several small stickers attached to your chest.
the electrical rhythm is abnormal, you may need to be prescribed medicine. Or you
need a procedure to further investigate the cause or correct the rhythm.