PROGNOSTIC FACTORS OF CLOSED MITRAL VALVOTOMY IN CHILDREN AND ADOLESCENTS' A QUARTER OF CENTURY EXPERIENCE
Bibliographic record
Abstract
Closed mitral valvotomy was performed in 153 patients with rheumatic mitral stenosis over a 25-year period ending in December 1999. There were 65 (42.5%) males and 88 (57.5%) females with an age range from 8 to 19 years {mean 14.8 ± 2.7). The most common presentation of the patients includes exertional dyspnea, palpitation, cough, chest pain, congestive heart failure and hemoptysis. According to New York Heart Association (NYHA) functional class 13 patients (8.5%) were in class II, 112 (73.2%) in class 111, and 28 (18.3%) in class IV. Preoperative echocardiogra-phy was done for 133 patients (86.9%). All of them had echocardio-graphic score < 8 with mitral valve area ranged from 0.6 to 1.1 cm2 with a mean value of 0.761 ± 0.21 crr>2. Three patients (2%) died in the early postoperative period. Ten patients (6.5%) developed postoperative complications. Postoperatively, the mean valve area achieved was 2.67 ± 0.38 cm2. Of the 150 patients who survived the operation, 28 patients were excluded from the last foilow-up, 9 (6%) required reoperation, 8 (5.2%) died late postoperatively, and 11 (7.2%) lost the follow-up. The most recent follow-up data were available for 122 patients (79.7%). In a recent follow-up, conducted after a mean of 10.3 ± 5.8 years (range: 1-24 years), the mean valve area measured by echo-Doppler in this patient group was 2.12 ± 0.41 cm2 (range: 1.4-2.9 cm2). Nine patients subsequently underwent reoperation for the mitral valve; 6 closed revalvotomy, and 3 valve replacement. The late mortality rate was 5.2%. Most of the patients (97.7%) were in NYHA functional
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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 | 0.002 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| 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) | 0.001 | 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".