The procedure for recording the precordial movements was described in the previous publication.' Records were taken from KV1 through KV5, and KV3R. (KV3R is in the same location as KY3, except for being located on the anterior right side of the chest.) KV1, KV2, etc., are used to denote kinetocardiograms taken from areas similar to conventional electrocardiograph chest leads. Records from KY6 a...
