OP15.07: Association between the cerebroplacental ratio and fetal growth disorders in monochorionic twins
Bibliographic record
Abstract
Results: Of 88 MCDA twin pregnancies included, 28 underwent cord occlusion using radiofrequency ablation resulting in perinatal survival of 88.8% and median gestational age at delivery of 37.3 weeks (range 28-41).Conservative management was employed in 60 cases.In 26 (43%) cases, the classification according to UA flow pattern has changed during gestation.The perinatal survival of MC twins with sIUGR type I, II and III was 100%, 83.3% and 75% respectively.The type III group included 3 cases of double IUFD at 21, 22 and 27 weeks of gestation, which occurred 1-3 weeks after the Doppler pattern changed from type I or II to type III.The median gestational age at delivery was 34.9 (range 30.6-36.9)weeks in type I, 30.2 weeks (range 27.7-33.7) in type II and 32 weeks (range 31-33.4) in type III (p=0.03).Severe brain lesions were not observed in any of the large twins and in 2 (3.7%) of the IUGR twins.Conclusions: The classification system of MC twins complicated by sIUGR based on UA Doppler pattern is correlated with perinatal outcome.However, the UA Doppler pattern can change over time and have impact on the risk of fetal death.Nevertheless, under strict fetal surveillance, the perinatal outcome of these pregnancies is favourable. OP15.06 Monochorionic twins complicated by twin anemia polycythemia sequence: perinatal outcome following intrauterine blood transfusion
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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 | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".