US 12,161,474 B2
Methods, devices and systems for identifying false R-R intervals and false arrhythmia detections due to R-wave undersensing or intermittent AV conduction block
Nima Badie, Berkeley, CA (US); Fujian Qu, San Jose, CA (US); and Jong Gill, Valencia, CA (US)
Assigned to Pacesetter, Inc., Sylmar, CA (US)
Filed by Pacesetter, Inc., Sylmar, CA (US)
Filed on May 13, 2021, as Appl. No. 17/319,847.
Claims priority of provisional application 63/043,932, filed on Jun. 25, 2020.
Claims priority of provisional application 63/033,815, filed on Jun. 2, 2020.
Prior Publication US 2021/0369176 A1, Dec. 2, 2021
Int. Cl. A61B 5/352 (2021.01); A61B 5/00 (2006.01); A61B 5/361 (2021.01); A61B 5/363 (2021.01); G16H 10/65 (2018.01); G16H 40/20 (2018.01); G16H 40/67 (2018.01); G16H 50/20 (2018.01); G16H 50/70 (2018.01); G16H 70/60 (2018.01); A61N 1/365 (2006.01); A61N 1/39 (2006.01)
CPC A61B 5/352 (2021.01) [A61B 5/0006 (2013.01); A61B 5/361 (2021.01); A61B 5/363 (2021.01); G16H 10/65 (2018.01); G16H 40/20 (2018.01); G16H 40/67 (2018.01); G16H 50/20 (2018.01); G16H 50/70 (2018.01); G16H 70/60 (2018.01); A61N 1/36507 (2013.01); A61N 1/3956 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for use by a device or system that monitors cardiac activity, the method comprising:
obtaining information for at least three R-R intervals included in a window leading up to a detection of a potential arrhythmic episode, wherein each of the R-R intervals has a respective duration, and each of the R-R intervals is either a true R-R interval or a false R-R interval;
classifying one of the R-R intervals as being a false R-R interval, in response to both
(i) determining that the duration of the one of the R-R intervals is greater than a first specified threshold, and
(ii) determining that the duration of the one of the R-R intervals is within a second specified threshold of being an integer multiple of at least X of the other R-R intervals for which information is obtained, wherein the integer multiple is at least 2, and wherein X is a specified integer that is 1 or greater; and
using results of the classifying to determine that the potential arrhythmic episode is a false positive detection.