Dual-stage algorithms

The AF algorithm uses R-R variability to detect potential AF rhythms. The verification stage uses several criteria including adaptive morphology, noise discrimination and pattern detectors to identify and reject false positives. New with the LUX-Dx II+ ICM is an additional verification step to identify sequential heart rate patterns and an update to merge adjacent AF episodes.

Enhanced atrial fibrillation algorithm

Novel PVC algorithm

This algorithm continues to use R-R intervals to detect pause episodes. The enhanced verification step further rejects false positives due to a low Signal-to-Noise Ratio. Additionally, the LUX-Dx II+ ICM is the only ICM with advanced nighttime pause programming*—to detect, differentiate and record specified nighttime pause events separately.

Enhanced pause algorithm

The AT algorithm uses rate, duration and built-in flexibility to detect either short or long duration AT or Atrial Flutter based on heart rate and R-R variability. The LUX-Dx II+ ICM System is the only ICM with independent AT and AF programming,* enabling better detection of clinically relevant regular arrhythmias—without compromising ideal AF detection settings. 

This algorithm uses traditional ICD-based rate and duration parameters during the detection stage. The verification stage uses a machine-learning-based decision tree to classify Tachy episodes as VT, SVT or to reject as noise.