Multisite heart pacing with adjustable number of pacing sites for terminating high frequency cardiac arrhythmias

摘要

A multisite heart pacing with adjustable number of pacing sites is realized by using only one lead directly connected to the heart. The number and locations of pacing sites is regulated by increasing the amplitude of pacing pulses delivered by the electric field, and by changing orientation of the electric field. Improved termination of high frequency cardiac arrhythmias and AF is achieved by regulating the number of pacing sites by choosing the pulse energy in the range 1/400-½ DE, where DE is energy of conventional cardioversion/defibrillation. protection against inducing VF by choosing the direction and amplitude of the electric field, and by a proper synchronization with R wave of the ECG. selection of the pacing frequency and amplitude based on the frequency spectrum of a high frequency cardiac arrhythmia.