Coronary Artery Bypass in Patients with Severe Left Ventricular Dysfunction
Bibliographic record
Abstract
We retrospectively reviewed the case records of 82 patients with severe left ventricular dysfunction (ejection fraction < 30%) who underwent coronary artery bypass grafting between March 1993 and February 2000. They were aged 28 to 76 years (mean, 60 years), and 66 of them were male. Significant comorbid factors included hypertension (93%), diabetes mellitus (85%), and hypercholesterolemia (49%). The number of grafts used ranged from 1 to 3. The majority of the patients (91%) belonged to the Canadian Cardiovascular Society angina class III. Coronary angiography revealed single-vessel (in 16% of the patients), double-vessel (52%), and triple-vessel disease (32%), and left main stem disease (18%). Seven patients (9%) died within 48 hours after surgery. The mean duration of hospital stay was 7 +/- 2 days. The 75 patients who survived were followed up for 3 months to 7 years. At the 1-year follow-up, 61 of the 68 patients (90%) who were alive moved up from angina class III to class I. Our observations suggest that coronary bypass carries an acceptable mortality risk and may offer a better quality of life in patients with poor ventricular function.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| 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".