Passive Arrhythmias
Bibliographic record
Abstract
This chapter will describe the most important electrocardiogram (ECG) characteristics of the different passive arrhythmias. When the heart rate is slow as a result of depressed sinus automaticity, sinoatrial block, or atrioventricular (AV) block, an AV junction pacemaker at a normal discharge rate may pace the electrical activity of the heart by delivering one or more pacing stimuli. Sinus automaticity depression is manifest by a slow sinus rhythm, which in young athletes or in patients with vagal predominance may even be less than 30bpm. Pacemaker implantation is urgent if the slow heart rate is due to a depressed AV junctional or ventricular rhythm. Sinus bradycardia and different degrees of AV block are present when a predominant vagal overdrive affects both the right vagus nerve and the left vagus nerve. The chapter discusses the key diagnostic criteria of the different AV blocks that may be found in the surface ECG.
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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 | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.022 | 0.014 |
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".