초록 ▼

A device implemented software system for use with atrial and/or ventricular rate stabilization to adjust DDD/R rate stabilization while maintaining intrinsic ventricular response timing to overdrive the intrinsic sinus (atrial) rate. Specifically, the algorithm is directed toward maintaining ventric

A device implemented software system for use with atrial and/or ventricular rate stabilization to adjust DDD/R rate stabilization while maintaining intrinsic ventricular response timing to overdrive the intrinsic sinus (atrial) rate. Specifically, the algorithm is directed toward maintaining ventricular activation/contraction sequence while improving atrial and ventricular hemodynamics. Generally, the PAV interval is prolonged subsequent to a sensed premature beat. In an ultimate embodiment, the algorithm enables extension of the PAV interval subsequent to a non-conducted premature atrial event. The extension of the PAV interval allows for the simultaneous smoothing of the atrial and ventricular rates.

대표청구항 ▼

1. A device-implemented software system for maintaining ventricular activation or contraction sequence to improve atrial and ventricular hemodynamics, the system comprising:means for prolonging a first PAV interval subsequent to a sensed premature beat; means for decrementing PAV intervals arising a

1. A device-implemented software system for maintaining ventricular activation or contraction sequence to improve atrial and ventricular hemodynamics, the system comprising:means for prolonging a first PAV interval subsequent to a sensed premature beat; means for decrementing PAV intervals arising after said first PAV interval; and means for identifying at least one of said PAV intervals that is equal to a programmed PAV interval. 2. The system of claim 1 wherein said means for prolonging includes means for extending the PAV interval subsequent to a non-conducted premature atrial event.3. The system of claim 1 wherein said means of decrementing includes means for controlling subsequent PAV intervals to become shorter until said PAV interval is equal to the programmed PAV interval.4. The system of claim 1 wherein said means for prolonging further includes means for simultaneous smoothing of the atrial and ventricular rates.5. The system of claim 1, further comprising means for determining a rhythm occurring prior to the sensed premature beat, wherein the prolonging means prolongs the first PAV interval in response to the determined rhythm.6. A method for maintaining ventricular activation or contraction sequence to improve atrial and ventricular hemodynamics, the method comprising:prolonging a first PAV interval subsequent to a sensed premature beat; and decrementing PAV intervals arising after said first PAV interval; and identifying at least one of said PAV intervals that is equal to a programmed interval. 7. The system of claim 5, wherein the first PAV interval is prolonged for a first time period in response to the determined rhythm being an intrinsic rhythm and for a second time period, not equal to the first time period, in response to the determined rhythm being other than an intrinsic rhythm.