Single‐centre experience with perioperative use of hypothermic fibrillatory arrest without aortic occlusion in left ventricular aneurysm resection concomitant with on‐pump coronary artery bypass grafting
Bibliographic record
Abstract
Aim Hypothermic fibrillatory arrest ( HFA ) without aortic occlusion has been long used for preserving the myocardium in cardiac surgery. The aim of the present study was to evaluate whether HFA can affect clinical outcomes in patients undergoing left ventricular aneurysm ( LVA ) resection concomitant with on‐pump coronary artery bypass grafting ( CABG ). Patients and methods From M arch 2005 to N ovember 2012, 11 men and one woman (mean age: 53 ± 7 years) were subjected to LVA resection and subsequent on‐pump CABG during HFA . Primary indications for operation were angina pectoris (unstable angina in 7), congestive heart failure in four and ventricular arrhythmias in three. The mean N ew Y ork H eart A ssociation C lass was 2.8. The mean left ventricular ejection fraction ( LVEF ) was 0.34 ± 0.05. Results Five patients had linear closure, and seven had left ventricular reconstruction. Coronary surgery was performed in all patients, with an average of 2.3 grafts/patient. The mean duration of cardiopulmonary bypass was 97 ± 38 min, and the mean ventilation time was 21 ± 15 h. The mean postoperative LVEF was 0.41 ± 0.08. The overall hospital mortality rate was zero. No patient had died when followed up 8–24 months’ postoperatively. Conclusion HFA is a safe and effective technique in the procedure of LVA resection concomitant with on‐pump CABG . Low hospital mortality, improved cardiac function status and survival are potential advantages.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| 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".