Introduction to the 2020 <i>Circulation</i> Cardiovascular Surgery–Themed Issue
Bibliographic record
Abstract
he present academic year has been particularly notable in the field of cardiovascular surgery.Landmark research developments were revealed, from new survival data on the use of radial artery coronary bypass grafts to the results of the ISCHEMIA trial (International Study of Comparative Health Effectiveness With Medical and Invasive Approaches), which warrant careful interpretation.With this in mind, the 2020 Cardiovascular Surgery-Themed Issue of Circulation gathers key articles pertaining to the forefront of our field, with generated interest foreseen to extend to the entire cardiovascular community.Transcatheter aortic valve replacement and surgical valve repair are featured in 3 articles, including a randomized controlled trial of mitral leaflet resection versus chordal augmentation, and a report of new translational findings in valve-sparing aortic root replacement, as well.In coronary artery surgery, this year's Themed Issue includes reports on long-term patency with the radial artery, new information on the late effects of postoperative atrial fibrillation after coronary artery bypass grafting, and long-term outcomes with revascularization for radiation-associated coronary artery disease.Two leaders in the field thoughtfully caution about the expanding role of fractional flow reserve in informing indications for coronary artery bypass and grafting strategy.Also included in this Themed Issue is an important basic science paper that provides new insights on the pathogenesis of aortic aneurysms.In congenital heart surgery, a comprehensive report of national outcomes and recent progress with hypoplastic left heart syndrome are featured.Our State of the Art article focuses this year on the ambitious topic of cardiac xenotransplantation.We hope that the 2020 Cardiovascular Surgery Themed Issue will garner wide interest.As in previous years, our goal remains to help drive innovation and beneficial practice changes in cardiovascular surgery through impactful research dissemination, an important part of Circulation's role as the premier cardiovascular journal.We thank the authors who have provided numerous high-quality submissions, the staff and leadership at Circulation for their unwavering support, and, most important, you the reader for your interest in the present compendium of carefully selected articles.
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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 | 0.004 | 0.010 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.006 | 0.003 |
| Open science | 0.001 | 0.003 |
| Research integrity | 0.006 | 0.008 |
| Insufficient payload (model declined to judge) | 0.087 | 0.025 |
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".