Cardiac arrhythmias

A condition in which hear rates are too slow (i.e. under 60 beats per minute), too fast (i.e. above 100 beats per minute) or irregular (e.g. atrial fibrillation), usually attributable to abnormalities in the electrical signalling that coordinates the contraction of the four chambers of the heart. (Adapted from ICRP Publication 118, 2012)

ICRP Glossary entry - May 2019