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Implantable stimulation device having means for operating in a preemptive pacing mode to prevent tachyarrhythmias and method thereof

  • US 6,058,328 A
  • Filed: 01/24/1997
  • Issued: 05/02/2000
  • Est. Priority Date: 08/06/1996
  • Status: Expired due to Term
First Claim
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1. A method of operating an implantable medical device in one of a main operating mode or a preemptive tachyarrhythmia preventive pacing operating mode, the implantable medical device including pulse generating means for generating pacing pulses and directing such pulses to cardiac tissue of a patient, the pulse generating means being controlled by a processor, the processor being coupled to a memory wherein an operating program for controlling the operating modes may be stored, the method comprising the steps of:

  • (a) sensing at least one parameter associated with the physiology of the patient'"'"'s heart for an indication that a tachyarrhythmia may soon occur;

    (b) determining when the at least one parameter exceeds a prescribed threshold, thereby indicating that a tachyarrhythmia may soon occur;

    (c) automatically operating the implantable medical device in accordance with the main operating mode whenever the at least one parameter suggests that a tachyarrhythmia may not soon occur, wherein the main operating program is aimed at controlling the implantable medical device so that it performs its intended function; and

    (d) automatically operating the implantable medical device in accordance with the preemptive tachyarrhythmia preventive pacing operating mode whenever the at least one parameter exceeds the prescribed threshold thereby indicating that a tachyarrhythmia may soon occur, wherein the preemptive tachyarrhythmia preventive pacing operating mode is aimed at preventing a tachyarrhythmia from occurring.

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