Treating Incessant Tachyarrhythmia-Induced Cardiogenic Shock With Emergent Atrioventricular Node Ablation
Bibliographic record
Abstract
BACKGROUND: Tachycardia-induced cardiogenic shock (TICS) is a life-threatening condition requiring prompt intervention. CASE SUMMARY: An elderly patient with chronic atrial fibrillation and multiple comorbidities developed refractory cardiogenic shock secondary to rapid ventricular rate. Initial management with antiarrhythmics, electrical cardioversion, and vasopressors failed to restore hemodynamic stability. Emergent atrioventricular node ablation (AVNA) with temporary biventricular pacemaker implantation was performed, resulting in immediate heart rate control and subsequent hemodynamic stabilization and heart failure recovery. DISCUSSION: This case highlights a rare mechanism of cardiogenic shock predominantly driven by diastolic dysfunction secondary to rapid atrial fibrillation. It also demonstrates the potential of emergent AVNA to serve as a life-saving strategy in critically ill patients with refractory TICS. TAKE-HOME MESSAGE: Emergent AVNA can be a life-saving intervention for critically ill patients experiencing refractory TICS.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| 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".