Rate adaptive biventricular and cardiac resynchronization therapy
First Claim
1. A method comprising:
- measuring a P wave width (Δ
P base) during a patient base state;
determining a patient base state PV delay (PV base) based on the P wave width (Δ
P base) and a value of a parameter δ
wherein the value of the parameter δ
depends on the P wave width (Δ
P base);
measuring an atrio-ventricular delay (DD base) during the patient base state;
measuring an atrio-ventricular delay (DD active) during a patient active state;
determining a patient active state PV delay (PV active) based at least in part on the atrio-ventricular delay (DD base) and the atrio-ventricular delay (DD active) wherein the atrio-ventricular delays extend from the end of a respective P wave to the beginning of a respective ventricular QRS complex or a point within a respective ventricular QRS complex; and
applying a pacing therapy that uses PV base or PV active.
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Accused Products
Abstract
An exemplary implantable device includes control logic to determine a base state atrio-ventricular delay (e.g., PV base or AV base) based on width of an atrial event (e.g., ΔP or ΔA) as measured during a patient base state and based on a value of a parameter δ that depends on the atrial event and control logic to determine an active state atrio-ventricular delay (e.g., PV active or AV active) based at least in part on a base state interval (e.g., DD base or AD base) measured during a patient base state and an active state interval (e.g., DD active or AD active) measured during a patient active state where such intervals extend from the end of a respective atrial event to the beginning of a respective ventricular QRS complex or a point within a respective ventricular QRS complex. Various other exemplary methods, devices, systems, etc., are also disclosed.
100 Citations
4 Claims
-
1. A method comprising:
-
measuring a P wave width (Δ
P base) during a patient base state;determining a patient base state PV delay (PV base) based on the P wave width (Δ
P base) and a value of a parameter δ
wherein the value of the parameter δ
depends on the P wave width (Δ
P base);measuring an atrio-ventricular delay (DD base) during the patient base state; measuring an atrio-ventricular delay (DD active) during a patient active state; determining a patient active state PV delay (PV active) based at least in part on the atrio-ventricular delay (DD base) and the atrio-ventricular delay (DD active) wherein the atrio-ventricular delays extend from the end of a respective P wave to the beginning of a respective ventricular QRS complex or a point within a respective ventricular QRS complex; and applying a pacing therapy that uses PV base or PV active. - View Dependent Claims (2, 3, 4)
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Specification