Arrhythmias are very common, both the harmless type and the dangerous type. An arrhythmia can be caused by:
The heart's natural pacemaker developing an abnormal rate or rhythm
The normal electrical conduction pathway being interrupted
Another part of the heart (other than the sinus node) taking over as pacemaker
The most common cause of dangerous arrhythmias is a heart attack. When the heart is deprived of adequate blood supply during a heart attack, its electrical activity can become erratic. Diseased heart valves and diseased heart muscle, direct injury to the heart, diseases that alter the body's chemical balance, and several kinds of medication can also upset the heart's circuitry.
Snow, V, Weiss, KB, LeFevre, M, et al. Management of newly detected atrial fibrillation: a clinical practice guideline from the American Academy of Family Physicians and the American College of Physicians.
Ann Intern Med.
Weber, BE, Kapoor, WN. Evaluation and outcomes of patients with palpitations.
Am J Med.
Please be aware that this information is provided to supplement the care
provided by your physician. It is neither intended nor implied to be a
substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER
IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the
advice of your physician or other qualified health provider prior to
starting any new treatment or with any questions you may have regarding a