发明名称 |
Devices, systems and methods to perform arrhythmia discrimination based on R-R interval stability corresponding to a plurality of ventricular regions |
摘要 |
Described herein are implantable systems and devices, and methods for use therewith, that can be used to perform arrhythmia discrimination. A plurality of different sensing vectors are used to obtain a plurality of different IEGMs, each of which is indicative of cardiac electrical activity at a different ventricular region. The plurality of different IEGMs can include, e.g., an IEGM indicative of cardiac electrical activity at a first region of the patient's left ventricular (LV) chamber and an IEGM indicative of cardiac electrical activity at a second region of the patient's LV chamber. Additionally, the plurality of different IEGMs can further include an IEGM indicative of cardiac electrical activity at a region of a patient's right ventricular (RV) chamber. For each of the IEGMs, there is a determination of a corresponding localized R-R interval stability metric indicative of the R-R interval stability at the corresponding ventricular region. This can include, e.g., determining, for each of the IEGMs, a plurality of R-R intervals corresponding to a plurality of consecutive cardiac cycles of the IEGM. For each IEGM, a measure of variation (e.g., standard deviation, range or variance, but not limited thereto) can then be determined for the plurality of R-R intervals to thereby determine the localized R-R interval stability metric for the IEGM. Arrhythmia discrimination is then performed using the plurality of determined localized R-R interval stability metrics. |
申请公布号 |
US9002453(B2) |
申请公布日期 |
2015.04.07 |
申请号 |
US201113194732 |
申请日期 |
2011.07.29 |
申请人 |
Pacesetter, Inc. |
发明人 |
Keel Allen J.;Ryu Kyungmoo;Rosenberg Stuart |
分类号 |
A61N1/00;A61B5/04;A61B5/042;A61B5/0452;A61B5/0464;A61N1/362;A61N1/368;A61B5/0456 |
主分类号 |
A61N1/00 |
代理机构 |
|
代理人 |
Raymer Theresa A. |
主权项 |
1. A method for use in arrhythmia discrimination, the method comprising:
(a) using a plurality of different sensing vectors to obtain a plurality of different intracardiac electrograms (IEGMs), each of which is indicative of cardiac electrical activity at a different ventricular region, wherein step (a) includes
(a.1) using a first sensing vector to obtain a first IEGM indicative of cardiac electrical activity at a first region of the left ventricular (LV) chamber, and(a.2) using a second sensing vector, that is different than the first sensing vector, to obtain a second IEGM indicative of cardiac electrical activity at a second region of the LV chamber, the second region of the LV chamber being different than the first region of the LV chamber; (b) for each of the IEGMs, determining a corresponding localized R-R interval stability metric indicative of the R-R interval stability at the corresponding ventricular region, wherein step (b) includes
(b.1) determining, based on the first IEGM, a first localized R-R interval stability metric indicative of the R-R interval stability at the first region of the LV chamber, and(b.2) determining, based on the second IEGM, a second localized R-R interval stability metric indicative of the R-R interval stability at the second region of the LV chamber; and (c) performing arrhythmia discrimination using the first and second localized R-R interval stability metrics determined at step (b). |
地址 |
Sunnyvale CA US |