Stenting of the right ventricular outflow tract in the symptomatic infant with tetralogy of Fallot
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Bibliographic record
Abstract
BACKGROUND: Repair of neonatal tetralogy of Fallot (TOF) has low mortality. Debate continues regarding the initial management of cyanotic or duct-dependent infants with TOF and adverse risk factors. While repair can and has been performed in these patients, it is associated with increased morbidity. OBJECTIVE: We review the effectiveness of right ventricular outflow tract (RVOT) stenting in the symptomatic young infant with TOF. METHODS: Clinical, echocardiographic, angiographic and haemodynamic data were reviewed for nine patients who underwent 11 RVOT stenting procedures from October 1994 to August 2007. RESULTS: The pulmonary valve was deemed unsalvageable in all patients (median valve diameter 3.7 mm (range 2.7-4.2), Z-score -6.7 (range -9.7 to -5.4). RVOT stenting improved arterial oxygen saturation from a median of 73% (60-85%) to 94% (90-98%) (p = 0.008). Median Z-score for the left pulmonary artery increased from -4.9 (-7.8 to -2.4) before stent implantation to -1.5 (-4.2 to -0.2) (p = 0.02) before surgical repair. Median Z-score for the right pulmonary artery increased from -3.7 (-6.8 to -1.9) to -0.8 (-2.5 to 0.1) (p = 0.008). Median Nakata index increased from 56 mm(2)/m(2) (21-77) to 150 mm(2)/m(2) (123-231) (p = 0.008). There were no procedural complications. Six patients have undergone successful repair. There were no deaths. CONCLUSIONS: In the symptomatic young infant with TOF, stenting of the RVOT provides a safe and effective management strategy, improving arterial oxygen saturation and encouraging pulmonary artery growth.
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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) | 0.000 | 0.000 |
| 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 it