Bibliographic record
Abstract
Background Fetal acardia is a rare anomaly occuring exclusively in monozygotic multiple pregnancies with an incidence of 1:35000 deliveries or in 1% of monozygotic twins. Since 1920, rudimentary developed heart of an acardiac twin, mostly called ‘hemiacardius’ or ‘pseudoacardius’, has been recognized in eigth cases. Four of them have been discovered during autopsy. We are showing a twin pregnancy of a 25‐year‐old woman with a hemiacardiac and a normal fetus, which was conducted in our Maternity Hospital. In the 22nd week of amenorea a suspicion of acardia of a deceased fetus with multiple malformations was expressed for the first time by ultrasound. With help of amniocenthesis we defined a normal male kariotype of a live twin and by ultrasound we carefully observed its morphology and growth. Furthermore, in the course of the pregnancy, mother's coagulation parameters were controlled weekly. In the 33rd week of gestation an extreme polyhydramnios developed, so amniodrainage was performed twice. The pregnancy was finished in the 36th week of gestation with a caesarian section: a live male child – 2330/46 and a hemiacardiac fetus – 2800 g with multiple malformations were born. The live twin was discharged from hospital three weeks later as a healthy baby.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.005 | 0.001 |
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".