A 60x computer-based Holter tape processing system

Since its introduction in 1968, the basic algorithm for automatic recognition of ventricular ectopic depolarizations, developed at Worcester Polytechnic Institute, has been implemented and modified by a number of investigators. The modified multi-template algorithm is conceptually similar to the original algorithm except that there are eight templates stored for each patient. A new template is stored whenever the match with each of the old templates yields a correlation coefficient less than 0.79. The system reads a Holter tape at 60 x real time for heart rates of 80 beats per minute, with relatively few false positives.