CRT responder model using EGM information
AssigneePacesetter, Inc.
InventorsXiaoyi Min, Josh Reiss
Life of this patent
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Abstract
An exemplary method includes detecting a QRS complex using cutaneous electrodes, during the QRS complex, detecting an R-wave of a ventricle using an intracardiac electrode, determining if the R-wave occurred during a first, predetermined percentage of the QRS complex width and, based at least in part on the determining, deciding whether a patient is likely to respond to cardiac resynchronization therapy. Such a method may set the predetermined percentage to approximately 50%. An exemplary model includes a parameter for a percentage for the timing of an EGM R-wave with respect to the total width of an ECG QRS complex. Various other exemplary methods, devices, systems, etc. are also disclosed.
Claims11
A method comprising:
- detecting a QRS complex using cutaneous electrodes;
- during the QRS complex, detecting an R-wave of a ventricle using an intracardiac electrode;
- determining if the R-wave occurred during a first, predetermined percentage of the QRS complex width;
- based at least in part on the determining, assigning a value to an EGM/ECG parameter where the EGM/ECG parameter comprises a parameter of a score for assessing a patient's likelihood of responding to cardiac resynchronization therapy;
- sensing activity of the ventricle using at least the intracardiac electrode;
- sensing activity of the other ventricle using at least one different intracardiac electrode;
- determining an interval between activity of one ventricle and activity of the other ventricle wherein activation in one ventricle causes the activity in the other ventricle from either the right ventricle to the left ventricle or from the left ventricle to the right ventricle;
- and
- based at least in part on the determining, assigning a value to a IVCD parameter where the IVCD parameter comprises a parameter of a score for assessing the patient's likelihood of responding to cardiac resynchronization therapy.
A method comprising:
- detecting a QRS complex using cutaneous electrodes;
- during the QRS complex, detecting an R-wave of a ventricle using an intracardiac electrode;
- determining if the R-wave occurred during a first, predetermined percentage of the QRS complex width;
- based at least in part on the determining, assigning a value to an EGM/ECG parameter where the EGM/ECG parameter comprises a parameter of a score for assessing a patient's likelihood of responding to cardiac resynchronization therapy;
- sensing activity of the ventricle and sensing activity of the other ventricle;
- determining an interval between activity of one ventricle and activity of the other ventricle;
- and
- based at least in part on the determining, assigning a value to a Δ parameter where the Δ parameter comprises a parameter of a score for assessing the patient's likelihood of responding to cardiac resynchronization therapy.
Dependencies are inferred from the claim text.