Systems and methods for optimizing AV/VV pacing delays using combined IEGM/impedance-based techniques for use with implantable medical devices
US8923965B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2010 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Mar 3, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36521
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and methods are provided wherein intracardiac electrogram (IEGM) signals are used to determine a set of preliminary optimized atrioventricular (AV/PV) and interventricular (VV) pacing delays. In one example, the preliminary optimized AV/VV pacing delays are used as a starting point for further optimization based on impedance signals such as impedance signals detected between a superior vena cava (SVC) coil electrode and a device housing electrode, which are influenced by changes in stroke volume within the patient. Ventricular pacing is thereafter delivered using the AV/VV pacing delays optimized via impedance. In another example, parameters derived from IEGM signals are used to limit the scope of an impedance-based optimization search to reduce the number of pacing tests needed during impedance-based optimization. Biventricular and multi-site left ventricular (MSLV) examples are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.