[A system of computer pre-treatment of electrocardiographic data]

A system of analogue pretreatment aimed at analysis of the arrhythmias in real time is presented. It is based on the separate detection of the P wave and the QRS complex, and on the use of a bipolar electrically conducting catheter introduced into the auricle of the right atrium. Such an arrangement is relatively insensitive to adventitous activity, both in the high and low frequency range, and provides on four separate channels impulses representing the P wave, the QRS complex, wide QRS complexes and premature QRS waves. In all cases, the atrial channel transmits all synchronised signals originating from atrial activity without any loss of information. This apparatus has been tried out with various arrhythmias and, if integrated, into a system of automatic detection, it should bring about a considerable saving in time and memory storage space.