Heartbeat detection and categorization

摘要

An automatic method for detecting heartbeats of a patient from two or more selected ECG signals, the method comprising: (a) determining a velocity for each of the selected signals; (b) summing together absolute values of each of the velocities; (c) comparing the sum with a threshold T having a value about one-half of an expected maximum value of the sum; and (d) if the sum is greater than the threshold T and if elapsed time since an immediately-previous heartbeat detection is greater than a preset refractory period tR, a heartbeat has been detected at a time tD of the velocity determinations. The method also further includes steps by which the detected heartbeats are categorized based on the velocities at the time of detection.

主权项

1. An automatic method for detecting heartbeats of a patient, the method comprising:
sensing two or more selected ECG signals; and automatically processing the ECG signals with a programmable processor configured to:
determine a velocity for each of the selected signals;sum together absolute values of each of the velocities;compare the sum with a threshold T having a value about one-half of an expected maximum value of the sum; anddetect a heartbeat at a time tD of the velocity determinations when the sum is greater than the threshold T and when elapsed time since an immediately-previous heartbeat detection is greater than a preset refractory period tR.