Intravenous immunoglobulin–associated thrombosis: is it such a rare event? Report of a pediatric case and of the <scp>Q</scp>uebec <scp>H</scp>emovigilance <scp>S</scp>ystem
Bibliographic record
Abstract
BACKGROUND: Intravenous immunoglobulin (IVIG) is frequently given in autoimmune disorders. Side effects are usually mild but severe complications such as thrombosis may occur. After one patient with IVIG-associated thrombotic complication at Sainte-Justine Hospital, the incidence of serious adverse events (SAEs) reported to the Quebec Hemovigilance System (QHS) was reviewed. STUDY DESIGN AND METHODS: This study was a retrospective review of QHS database of IVIG-related thrombotic complications since 2003, including a case report of a pediatric patient. RESULTS: QHS is one of the rare national hemovigilance systems that have included IVIG reports for almost a decade. Over an extended period of 11 years (2003-2013), there have been eight cases of IVIG-related thrombosis, seven in adults and one in the pediatric population (respective rate of 0.06 case and 0.17 case per 100,000 g of IVIG given). The single pediatric case occurred in a 16-year-old female receiving IVIG for severe immune thrombocytopenia. CONCLUSION: Thrombosis after IVIG is a rare though SAE occurring mostly in adults. This underlines the importance of properly reporting IVIG SAEs to improve hemovigilance data and study such rare events.
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How this classification was reachedexpand
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 | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.005 | 0.002 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".