High-resolution mapping of the atria using the HD Grid catheter
Bibliographic record
Abstract
Key Teaching Points•The HD Grid catheter (Abbott Technologies, Minneapolis, MN) has 16 equidistant electrodes, allowing for assessment of conduction directionality as well as omnipolar electrogram assessment.•This allows for the differentiation of far-field and near-field signals using a single catheter, which can be helpful for determination of an endpoint in pulmonary vein isolation.•The unique shape and predictable electrode location allows for rapid mapping of connections between the left atrium and the pulmonary veins as well as the diagnosis of complex post–pulmonary vein isolation atrial tachycardias.•This catheter can also be used easily to assess bidirectional conduction block along a line of ablation. •The HD Grid catheter (Abbott Technologies, Minneapolis, MN) has 16 equidistant electrodes, allowing for assessment of conduction directionality as well as omnipolar electrogram assessment.•This allows for the differentiation of far-field and near-field signals using a single catheter, which can be helpful for determination of an endpoint in pulmonary vein isolation.•The unique shape and predictable electrode location allows for rapid mapping of connections between the left atrium and the pulmonary veins as well as the diagnosis of complex post–pulmonary vein isolation atrial tachycardias.•This catheter can also be used easily to assess bidirectional conduction block along a line of ablation.
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.004 | 0.002 |
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".