Source:http://linkedlifedata.com/resource/umls/id/C0744680
NCI: The maximum time between successive cycles of contraction and subsequent relaxation of the heart, usually expressed as beats per minute, obtained from a set of measurements of the heart rate.,NCI: The maximum time between successive cycles of contraction and subsequent relaxation of the heart, usually expressed as beats per minute, obtained from a set of measurements of the heart rate. (NCI)