Patent ID: 6311089
Filing Date: 2001-10-30
Classification: A61N

Abstract:
A method of determining a ventricular sensitivity threshold in a stimulation device having programmable AV delay and ventricular sensitivity, the method comprising:automatically determining an optimum AV delay value;automatically adjusting the AV delay to the optimum AV delay value;adjusting the ventricular sensitivity until a ventricular sensitivity threshold is identified;setting the ventricular sensitivity to within a safety margin value from the ventricular sensitivity threshold; andperforming an automatic ventricular sensing test using the optimum AV delay value and the ventricular sensitivity setting within the safety margin value,wherein determining the optimum AV delay value comprises:automatically determining if intact conduction exists by detecting the presence of R-waves in a lengthened AV delay interval; anddetermining the optimum AV delay value as the value which permits conduction of R-waves.