More complicated arrhythmias can be identified by a cardiac catheterization . In this procedure, a doctor inserts a catheter into the heart through a vein in the leg. The electrical impulses of the heart can then be measured to determine exactly what type of arrhythmia is present. Untreated arrhythmias can cause heart attacks , strokes , and even death. Arrhythmias are not contagious and pose no risk to others.
Different treatments are available, depending on the type of arrhythmia being treated.
Medications such as amiodarone, procainamide, and propranolol can be used to control the rate or restore the rhythm of the heart. Calcium channel blockers, such as verapamil, have been used over 20 years. However, findings of two recent studies show that people who take a calcium channel blocker have a much higher incidence of complications than people taking other medications for heart disease. The American Heart Association recommends that individuals discuss risks and benefits of the medication with the healthcare provider. A pacemaker may be inserted to control an arrhythmia or speed up a heart that is beating too slowly.