Safety and Efficacy of Novel Multipolar Steerable Mapping Catheter in Atrial Arrhythmia: A Single Centre Experience
Bibliographic record
Abstract
Background: There is limited data on the safety and efficacy of a novel high-definition mapping catheter with 16 equidistant electrodes (Advisor HD Grid). We describe procedural details for the treatment of complex atrial arrhythmias and associated outcomes using this novel catheter design. Methods and Results: The HD Grid was employed for patients with clinically relevant arrhythmia using the EnSite Precision™ electroanatomic mapping system. AVRT and typical flutter cases were excluded. Major procedural complications were defined as bleeding, stroke or TIA, sepsis, and death from any cause, whereas minor complications were defined as no changes to the length of hospital stay or to the expected management of the patient. Recurrence was defined as sustained tachycardia after 3 months post-procedure. Consecutive patients attending for the treatment of paroxysmal atrial fibrillation (66), persistent atrial fibrillation (38), atrial tachycardia (29), and atypical flutter (18) were included, resulting in a final inclusion of 142 patients and 151 procedures. Eighty-four patients (55.3%) received general anesthetic and intracardiac echocardiography was used in 23 (15.1%). Long term follow-up was available in 150/151 procedures, mean 185.2±134.3 days; 32 patients (21.3%) documented recurrence. Three (2.0%) patients experienced complications within 30-days of the procedure including acute tamponade (1), TIA (1) and stroke (1) and 1 (0.7%) died from complications of septic arthritis 183 days post-procedure. Conclusion: The novel HD Grid differs significantly in design and handling compared to the traditional multielectrode catheters. Our data report procedural outcomes in line with contemporary clinical expectations with low complication and recurrence rates.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".