Multi-chamber cardiac capture detection using cross chamber sensing
AssigneeCardiac Pacemakers, Inc.
InventorsScott A. Meyer, David J. Yonce, David J. Ternes
Life of this patent
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Abstract
Methods and systems involve multi-chamber cardiac capture detection utilizing sensing during a cross-chamber refractory period. First and second pacing pulses are delivered to first and second heart chamber. Capture or non-capture of the second heart chamber is determined. Sensing in the first heart chamber is performed to sense for cross-chamber propagation initiated by the second pacing pulse. Capture of the first chamber is detected if capture of the second heart chamber is detected and if the cross-chamber propagation is not detected.
Claims13
A capture detection method, comprising:
- delivering a first pacing pulse to a first heart chamber;
- delivering a second pacing pulse to a second heart chamber;
- determining if the second pacing pulse captured the second heart chamber;
- sensing in the first heart chamber for a cross chamber-propagation initiated by the second pacing pulse;
- and
- detecting capture of the first chamber if capture of the second heart chamber is detected and if the cross-chamber propagation is not detected.
A cardiac rhythm management system, comprising:
- cardiac electrodes configured to electrically couple to a heart;
- a pulse generator coupled to the cardiac electrodes and configured to deliver first and second pacing pulses to first and second heart chambers respectively;
- a sensing circuit configured to sense cardiac electrical signals including cross-chamber propagation initiated by the second pacing pulse;
- and
- a capture detection circuit coupled to the sensing circuit and the cardiac electrodes, the capture detection circuit configured to determine if the second pacing pulse captured the second heart chamber and to detect capture of the first heart chamber if capture of the second heart chamber is detected and if the cross-chamber propagation is not detected.
A cardiac rhythm management system, comprising:
- a pulse generator configured to deliver a first pacing pulse to a first heart chamber and a second pacing pulse to a second heart chamber;
- a capture detector configured to determine if the second pacing pulse captured the second heart chamber;
- means for sensing in the first heart chamber for a cross-chamber propagation initiated by the second pacing pulse;
- and
- means for detecting capture of the first chamber if capture of the second heart chamber is detected and if the cross-chamber propagation is not detected.
Dependencies are inferred from the claim text.