Of those, about 27 % (approximately 3,000) have abnormalities of the heart muscle (including irregular heart rhythm) as an underlying cause. (sciencedaily.com)
Iron deficiency called anemia can lead to increased or irregular heart rate. (healthnfitnesshops.com)
The hope is that once the faulty tissue is destroyed, the heart's electrical communication system will improve, and the periodic irregular heart rhythms will cease or occur less intensely or frequently. (sciencedaily.com)