Abstract 16329: Survival Prospects in Congenitally Corrected Transposition of the Great Arteries: Results From a Multi-institutional Study
Bibliographic record
Abstract
Background: Occasionally patients with congenitally corrected transposition of the great arteries (ccTGA) exhibit little clinical evidence of cardiovascular limitation even to their 8th decade. We aimed to assess survival prospects in a large cohort of ccTGA adults. Methods & Results: We included 555 ccTGA adults (median age 33.0 years, 48.3% female) under regular follow-up at 28 institutions between 2002 and 2019. The primary outcome was a composite of death, mechanical circulatory support (MCS) and heart transplant. During a median follow-up of 8.1 [IQR 4.4 - 13.3] years, 56 (10.1%) patients died, 10 (1.8%) patients underwent MCS and 14 (2.5%) had a heart transplant. Median age at time of primary outcome was 51.1 [IQR 37.5 - 63.2] years and cumulative incidence at 15 years from baseline was 21.5% [95% CI 16.1 - 26.5]. Leading causes of death were worsening of heart failure (43%) and sudden death (10%). Patients who died were more likely to use heart failure (HF) medications. In multivariable Cox analyses for baseline variables, age, prior atrial arrhythmia and HF admission were each associated with an increased risk of the primary outcome. Figure shows cumulative incidence according to history of atrial arrhythmia. During follow-up, 91 (16.4%) were admitted for HF, pacemaker implantation was performed in 68 (12.3%) patients, ICD in 82 (14.7%), and major cardiac surgery (mostly for systemic AV-valve) in 89 (15.8%) patients. Conclusion: In this large cohort of ccTGA adults, survival seemed to be primarily determined by heart failure-related complications. Prior atrial arrhythmia also seems to be a harbinger for adverse outcome. Few patients underwent advanced HF therapies. Figure: Cumulative incidence of the composite primary outcome (MCS, heart transplant or death) over a period of 14 years from first visit at an adult congenital heart disease clinic since 2002 stratified according to history of atrial arrhythmia. Shading represents upper and lower 95% confidence limits.
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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 | 0.002 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| 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".