Intraventr¡cular Hemorrhage Complicating Ventricular Catheter Revision: Incidence and Effect on Shunt Survival
Bibliographic record
Abstract
A retrospective study was conducted on 105 pediatric patients who underwent shunt revision between 1986 and 1993 at the Alberta Childrens Hospital (Calgary) to determine the frequency of intraventricular hemorrhage (IVH) with ventricular catheter revision. Ventricular catheter revision was performed 143 times in 74 patients. Intraventricular hemorrhage was noted intra-operatively or on post-operative computed tomographic (CT) scans on 45 occasions for an overall incidence of 31%. IVH was associated with a significantly shorter time (p < 0.0002) to subsequent shunt revision (227.33 +/- 392.24 days) compared to catheter survival when no hemorrhage was noted (735.02 +/- 1,001.11 days). This study raises several important questions about the prevention and management of IVH during shunt revision. It also provides the first published report on the incidence of IVH during shunt revision, thereby setting a standard to which future studies can be compared.
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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 | 0.003 |
| 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 | 0.001 |
| 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".