University of Minnesota Health physicians have pioneered many advances in the treatment of cardiac arrhythmias. They implanted the first cardiac pacemaker in the 1950s, provided the first wearable, transistorized pacemaker to a young boy in the 1960s and were involved in the first bi-ventricular pacemakers and defibrillators in the 1990s. They also have been at the leading edge of technology involving catheters and resynchronization therapy to help both chambers of the heart beat together efficiently. Our team of specialists work hand in hand from diagnosis to treatment, providing you with clinical expertise and compassionate care to treat your arrhythmia.