Key result
The BioMonitor III insertable cardiac monitor accurately detected atrial fibrillation burden compared to Holter recordings, demonstrating a Pearson correlation coefficient of 0.996.
Why the study?
Insertable cardiac monitors are increasingly used to assess AF burden after catheter ablation, but the performance of the BioMonitor III AF detection algorithm required evaluation before and after ablation.
Does the BioMonitor III insertable cardiac monitor accurately detect atrial fibrillation burden compared to Holter monitoring in patients undergoing catheter ablation?
Observational (n=31)
Does the BioMonitor III insertable cardiac monitor accurately detect atrial fibrillation burden compared to Holter monitoring in patients undergoing catheter ablation?
The BioMonitor III insertable cardiac monitor demonstrates high accuracy, sensitivity, and specificity for detecting atrial fibrillation burden before and after catheter ablation.
Answers are grounded in this paper and cite their sources.
Supports AF burden monitoring with BioMonitor III around ablation; extends validation data but leaves open need for outcome trials.
BACKGROUND: Insertable cardiac monitors (ICMs) are increasingly used to evaluate the atrial fibrillation (AF) burden after catheter ablation of AF. BioMonitor III (BM3) is an ICM with a long sensing vector, which enhances sensing capabilities. The AF detection algorithm of the BM3 is based on R-R interval variability. OBJECTIVE: To evaluate the performance of the AF detection algorithm of BM3 in patients before and after catheter ablation of AF using simultaneous Holter recordings. METHODS: In this prospective study, we enrolled patients scheduled for catheter ablation of paroxysmal or persistent AF. After BM3 implantation, patients had a 4 days Holter registration before and 3 months after ablation. All true AF episodes ≥2 min on the Holter were annotated and matched with BM3 detected AF detections. RESULTS: Thirty-one patients were enrolled (mean age 60 ± 8, 74% male, 68% paroxysmal AF). Fifty-six Holter registrations were performed in 30 patients. Twelve patients demonstrated at least one true AF episode with a total AF duration of 570 h. The AF burden accuracy of BM3 before catheter ablation was 99.6%, with a duration sensitivity of 98.6% and a duration specificity of 99.9%. The AF burden accuracy of BM3 after catheter ablation was 99.8%, with a duration sensitivity of 90.2% and a duration specificity of 99.9%. Overall, the AF burden detected on the Holter and BM3 demonstrated a high Pearson correlation coefficient of 0.996. CONCLUSION: BM3 accurately detects AF burden in patients before and after catheter ablation of AF.
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Assaf et al. (2022) conducted an observational in Atrial fibrillation (n=31). BioMonitor III (BM3) insertable cardiac monitor vs. Holter recordings was evaluated on Atrial fibrillation burden accuracy (Pearson correlation 0.996). The BioMonitor III insertable cardiac monitor accurately detected atrial fibrillation burden compared to Holter recordings, demonstrating a Pearson correlation coefficient of 0.996.
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