Skip to main content
Boston Scientific LUX-Dx Insertable Cardiac Monitor with Detect and Verify icons and words.


The ICM that checks its work

Healthcare ProfessionalsElectrophysiology / LUX-Dx™ ICM / Dual-Stage Algorithm
The LUX-Dx™ Insertable Cardiac Monitor (ICM) System uses a dual-stage algorithm that automatically detects and then verifies data before sending results, so it can reject false positives and provide actionable data and insights.

Video image with "Actionable insights. Fast diagnosis. Find out how the LUX-Dx ICM dual-stage algorithm rejects false positives to maximize your time. Plus, see performance results across multiple cardiac arrythmias."

Actionable insights. Fast diagnosis.

Find out how the LUX-Dx ICM dual-stage algorithm rejects false positives to maximize your time. Plus, see performance results across multiple cardiac arrythmias.


LUX-Dx ICM algorithms

Reject false positives. Embrace reliable data.

Atrial fibrillation (AF) algorithm

Monitors R-R variability to detect potential AF rhythms. The verification stage uses adaptive morphology, noise discrimination and pattern detectors to identify and reject false positives.

See how the AF algorithm works

Atrial tachycardia (AT) algorithm

Uses rate, duration and built-in flexibility to detect only high-rate rhythms sustained for a prolonged period of time, or to detect short duration AT/atrial flutter. The AT algorithm is the market’s only ICM with a duration independent of the AF algorithm duration.

See how the AT algorithm works

Pause algorithm

Monitors R-R duration to detect pause episodes. The verification stage rejects false positives by using a dynamic noise-reduction filter, signal-to-noise ratio and loss-of-signal conditions.

See how the pause algorithm works

Tachycardia algorithm

Uses traditional ICD-based rate and duration parameters during the detection stage. The verification stage uses a machine-learning-based decision tree to identify potential tachy episodes. If they’re not within the rate zone, they’re rejected as noise.

See how the tachycardia algorithm works

Bradycardia algorithm

Uses rate and duration parameters during the detection stage to identify potential brady episodes. During the verification stage, episodes are further examined for under-sensing before being rejected.

See how the bradycardia algorithm works




Engineer Perspectives

Deep dive into the dual-stage algorithms

Dave Perschbacher, Senior Fellow R&D, digs deeper into the LUX-Dx ICM's dual-stage algorithms, sharing how the device uses a morphology assessment within the AF and Tachy algorithms to reduce false positives and classify rhythms, as well as the benefits of having separately programmable AF and AT algorithms.


Algorithm performance

Bench testing

Icon signifying 53% reduction.

Dual-stage AF algorithm
Reduced false positives by 53% in bench testing1†
Blue background.

Performance results

Download a summary of LUX-Dx ICM bench testing results across multiple cardiac arrhythmias, including AF, AT, tachy and pause.


Icon of paper with magnifying glass.


Find resources to help integrate the LUX-Dx ICM into your practice.
Envelope icon.

Stay up to date

Sign up for periodic email updates about the LUX-Dx ICM System.
Indications, Safety and Warnings

†Bench testing showed a relative reduction of 53.1% in false positives when QRS morphology was turned on. Bench test results may not be indicative of clinical performance. Bench data for this research was provided by Telemetric and Holter ECG Warehouse (THEW), University of Rochester, NY.


1. Mittal S, Saha S, Perschbacher D, Siejko K. Improved AF Rhythm Discrimination with an Implantable Cardiac Monitor Using QRS Morphology. Poster presented at: 2019 Heart Rhythm Society; May, 2019; San Francisco, CA.