Irregular heart rhythms are another relatively common occurrence during this procedure. Most of these are very brief and cause no symptoms. However, in rare cases, an abnormal rhythm can develop that creates an immediate risk. Because of this risk, the cardiac lab is equipped with instruments and medications to treat these rhythms and the healthcare providers have advanced training for these situations.

Depending on the heart irregularity, your doctor may temporarily or permanently place a pacemaker or defibrillator into your heart. These instruments are able to sense abnormal heart rhythms and act to correct them. They are used if you have developed or are at risk of developing a heart rhythm that can cause serious consequences. In rare cases, an abnormal rhythm can lead to death.