Exercise-induced right bundle branch block progressive resolution
Bibliographic record
Abstract
A 67-year-old male was presented to the consultant with atypical chest pain. A stress test was performed. Panel A shows a 12-lead electrocardiogram (ECG) immediately before the test, depicting a normal sinus rhythm at 83 b.p.m. and right bundle branch block (RBBB). Panel B shows the heart rate increasing to a maximum of 117 b.p.m. with complete resolution of RBBB. What are the possible mechanisms? First, one should speculate that a rapid and progressive increment of plasmatic catecholamines occurred, leading to a progressive shortening of the right bundle branch refractory period facilitating 2 : 1 conduction first, and then complete normalization of conduction. Secondly, possible supernormality of conduction (SNC) over the right bundle branch may be occurring given that the PR interval remains stable. This is very difficult to prove without a complete screening of the diastolic period at different heart rates. Finally, Phase 4 RBBB was ruled out by observing several prior ECGs at lower heart rates, depicting RBBB identical to the one observed during the stress test. The full-length version of this report can be viewed at: http://www.escardio.org/communities/EHRA/publications/ep-case-reports/Documents/exercise-induced-right-bundle.pdf.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".