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US 2002/0161409 A1Published application
Method and system for nodal rhythm detection and treatment
AssigneeMedtronic, Inc.
InventorsMattias Rouw, Gustaaf A.P. Stoop
Life of this patent
Estimating the term…
Abstract
A method and system nodal rhythm detection and treatment is provided. Detecting consecutive atrial events within a nodal activity window around ventricular events identifies nodal rhythm. Nodal rhythm is treated by calculating and applying a new atrial escape interval adjusted by the interval between the atrial and ventricular events.
Claims59
A method for nodal rhythm detection and treatment for a mammalian heart, comprising:
- determining whether an atrial event precedes a ventricular event;
- counting the consecutive times atrial events occur less than a first time limit before the ventricular event, if the atrial event precedes the ventricular event;
- counting the consecutive times atrial events occur less than a second time limit after the ventricular event, if the atrial event follows the ventricular event;
- treating nodal rhythm if a nodal treatment activation constant consecutive atrial events occur less than a first time limit before the ventricular event;
- and
- treating nodal rhythm if a nodal treatment activation constant of consecutive atrial events occur less than a second time limit after the ventricular event.
3 more elements
A method for nodal rhythm detection and treatment for a mammalian heart, comprising:
- determining nodal rhythm treatment is required;
- determining that an atrial event is an atrial sense;
- determining whether the atrial event precedes a ventricular event;
- determining a mean ventricular rate;
- determining a paced AV interval;
- determining an AV interval if the atrial event precedes the ventricular event;
- determining a VA interval if the atrial event follows the ventricular event;
- calculating a new atrial escape interval by subtracting the paced AV interval from the sum of the AV interval and the mean ventricular rate, if the atrial event precedes the ventricular event;
- calculating the new atrial escape interval by subtracting the paced AV interval and the VA interval from the mean ventricular rate, if the atrial event follows the ventricular event;
- summing the consecutive times atrial events occur more than a first time limit before the ventricular event, if the atrial event precedes the ventricular event, and the consecutive times atrial events occur more than a second time limit after the ventricular event, if the atrial event follows the ventricular event;
- and
- ending nodal rhythm treatment if a nodal treatment sinus deactivation constant is less than the sum of consecutive atrial events.
9 more elements
A method for nodal rhythm detection and treatment for a mammalian heart, comprising:
- determining nodal rhythm treatment is required;
- determining that an atrial event is an atrial pace;
- determining whether a ventricular event is a ventricular pace or a ventricular sense;
- determining a mean ventricular rate;
- determining a paced AV interval;
- determining an AV interval;
- calculating a new atrial escape interval by subtracting the paced AV interval from the sum of the AV interval and the mean ventricular rate, if the ventricular event is a ventricular sense;
- summing the consecutive times the ventricular pace follows the atrial pace, if the ventricular event is a ventricular pace;
- and
- ending nodal rhythm treatment if a nodal treatment pace deactivation constant is less than the sum of consecutive atrial events.
7 more elements
A method for nodal rhythm detection and treatment for a mammalian heart, comprising:
- determining whether specific conditions contraindicate nodal rhythm;
- deactivating nodal rhythm treatment if the specific conditions contraindicate nodal rhythm;
- determining whether nodal rhythm treatment is active;
- treating nodal rhythm if nodal rhythm treatment is active;
- and
- searching for nodal rhythm if nodal rhythm treatment is not active.
3 more elements
An implantable medical system for a mammalian heart, comprising:
- means for determining whether an atrial event precedes a ventricular event;
- means for counting the consecutive times atrial events occur less than a first time limit before the ventricular event, if the atrial event precedes the ventricular event;
- means for counting the consecutive times atrial events occur less than a second time limit after the ventricular event, if the atrial event follows the ventricular event;
- means for treating nodal rhythm if a nodal treatment activation constant of consecutive atrial events occur less than a first time limit before the ventricular event;
- and
- means for treating nodal rhythm if Nca consecutive atrial events occur less than a second time limit after the ventricular event.
3 more elements
A system for nodal rhythm detection and treatment for a mammalian heart, comprising:
- means for determining nodal rhythm treatment is required;
- means for determining that an atrial event is an atrial sense;
- means for determining whether the atrial event precedes a ventricular event;
- means for determining a mean ventricular rate;
- means for determining a paced AV interval;
- means for determining an AV interval if the atrial event precedes the ventricular event;
- means for determining a VA interval if the atrial event follows the ventricular event;
- means for calculating a new atrial escape interval by subtracting the paced AV interval from the sum of the AV interval and the mean ventricular rate, if the atrial event precedes the ventricular event;
- means for calculating the new atrial escape interval by subtracting the paced AV interval and the VA interval from the mean ventricular rate, if the atrial event follows the ventricular event;
- means for summing the consecutive times atrial events occur more than a first time limit before the ventricular event, if the atrial event precedes the ventricular event, and the consecutive times atrial events occur more than a second time limit after the ventricular event, it the atrial event follows the ventricular event;
- and
- means for ending nodal rhythm treatment if a nodal treatment sinus deactivation constant is less than the sum of consecutive atrial events.
9 more elements
A system for nodal rhythm detection and treatment for a mammalian heart, comprising:
- means for determining nodal rhythm treatment is required;
- means for determining that an atrial event is an atrial pace;
- means for determining whether a ventricular event is a ventricular pace or a ventricular sense;
- means for determining a mean ventricular rate;
- means for determining a paced AV interval;
- means for determining an AV interval;
- means for calculating a new atrial escape interval by subtracting the paced AV interval from the sum of the AV interval and the mean ventricular rate, if the ventricular event is a ventricular sense;
- means for summing the consecutive times the ventricular pace follows the atrial pace, if the ventricular event is a ventricular pace;
- and
- means for ending nodal rhythm treatment if a nodal treatment pace deactivation constant is less than the sum of consecutive atrial events.
7 more elements
A system for nodal rhythm detection and treatment for a mammalian heart, comprising:
- means for determining whether specific conditions contraindicate nodal rhythm;
- means for deactivating nodal rhythm treatment if the specific conditions contraindicate nodal rhythm;
- means for determining whether nodal rhythm treatment is active;
- means for treating nodal rhythm if nodal rhythm treatment is active;
- and
- means for searching for nodal rhythm if nodal rhythm treatment is not active.
3 more elements
A computer usable medium storing computer readable program code having a program for nodal rhythm detection and treatment for a mammalian heart, comprising:
- computer readable program code for determining whether an atrial event precedes a ventricular event;
- computer readable program code for counting the consecutive times atrial events occur less than a first time limit before the ventricular event, if the atrial event precedes the ventricular event;
- computer readable program code for counting the consecutive times atrial events occur less than a second time limit after the ventricular event, it the atrial event follows the ventricular event;
- computer readable program code for treating nodal rhythm if a nodal treatment activation constant of consecutive atrial events occur less than a first time limit before the ventricular event;
- and
- computer readable program code for treating nodal rhythm if a nodal treatment activation constant of consecutive atrial events occur less than a second time limit after the ventricular event.
3 more elements
A program for nodal rhythm detection and treatment for a mammalian heart, comprising:
- computer readable program code for determining nodal rhythm treatment is required;
- computer readable program code for determining that an atrial event is an atrial sense;
- computer readable program code for determining whether the atrial event precedes a ventricular event;
- computer readable program code for determining a mean ventricular rate;
- computer readable program code for determining a paced AV interval;
- computer readable program code for determining an AV interval if the atrial event precedes the ventricular event;
- computer readable program code for determining a VA interval if the atrial event follows the ventricular event;
- computer readable program code for calculating a new atrial escape interval by subtracting the paced AV interval from the sum of the AV interval and the mean ventricular rate, if the atrial event precedes the ventricular event;
- computer readable program code for calculating the new atrial escape interval by subtracting the paced AV interval and the VA interval from the mean ventricular rate, if the atrial event follows the ventricular event;
- computer readable program code for summing the consecutive times atrial events occur more than a first time limit before the ventricular event, if the atrial event precedes the ventricular event, and the consecutive times atrial events occur more than a second time limit after the ventricular event, if the atrial event follows the ventricular event;
- and
- computer readable program code for ending nodal rhythm treatment if a nodal treatment sinus deactivation constant is less than the sum of consecutive atrial events.
9 more elements
A program for nodal rhythm detection and treatment for a mammalian heart, comprising:
- computer readable program code for determining nodal rhythm treatment is required;
- computer readable program code for determining that an atrial event is an atrial pace;
- computer readable program code for determining whether a ventricular event is a ventricular pace or a ventricular sense;
- computer readable program code for determining a mean ventricular rate;
- computer readable program code for determining a paced AV interval;
- computer readable program code for determining an AV interval;
- computer readable program code for calculating a new atrial escape interval by subtracting the paced AV interval from the sum of the AV interval and the mean ventricular rate, if the ventricular event is a ventricular sense;
- computer readable program code for summing the consecutive times the ventricular pace follows the atrial pace, if the ventricular event is a ventricular pace;
- and
- computer readable program code for ending nodal rhythm treatment if a nodal treatment pace deactivation constant is less than the sum of consecutive atrial events.
7 more elements
A program for nodal rhythm detection and treatment for a mammalian heart, comprising:
- computer readable program code for determining whether specific conditions contraindicate nodal rhythm;
- computer readable program code for deactivating nodal rhythm treatment if the specific conditions contraindicate nodal rhythm;
- computer readable program code for determining whether nodal rhythm treatment is active;
- computer readable program code for treating nodal rhythm if nodal rhythm treatment is active;
- and
- computer readable program code for searching for nodal rhythm if nodal rhythm treatment is not active.
3 more elements
Dependencies are inferred from the claim text.