What are heart rhythm disorders?
Heart rhythm disorders (arrhythmias) are caused by irregular electrical impulses that create a disturbance in heart contractions, leading to inefficient pumping of blood to the body. In general, a normal resting heart rate when inactive or during sleep ranges from 60 to 100 beats per minute. Although there are several types of arrhythmias, they may be classified into four main categories:
- Ventricular arrhythmias, which begin in the heart's lower chambers (ventricles).
- Supraventricular arrhythmias, which begin above the ventricles, in the atria, or in the atrioventricular node.
- Bradyarrhythmias, which are slow heart rhythms caused by the slow generation of electrical impulses or the blocking of impulse propagation. These typically lead to heart rhythms slower than 60 beats per minute.
- Tachycardias, which are rapid heart rhythms that exceed normal resting heart rate, typically more than 100 beats per minute.
The Loyola difference
U.S. News & World Report ranked Loyola 29th in the nation for cardiology and heart surgery in 2014-2015. Loyola has the only cardiology program in Chicago to be nationally ranked for 12 years in a row.
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Call (708) 216-9449 to speak with a heart rhythm disorder representative.