Prevalence, risk factors, treatment and outcomes of catheter-related thrombosis in patients with malignancies.
Bibliographic record
Abstract
e17517 Background: Tunnelled catheters (Leonard, BARD) and peripherally inserted central catheters (Piccline, BARD) are used for intravenous therapies in patients with malignancies. Thrombosis is a well known complication, but risk factors are not clearly established. The objective the incidence, risk factors, therapeutic approaches and complications of catheter-related thrombosis among patients with malignancies. Methods: Medical charts of patients with malignancies and Leonard or Piccline inserted, from August 2002 to December 2006 at Hôpital de l’Enfant-Jésus (Québec City, Canada), were retrospectively reviewed. Results: A total of 618 catheters were inserted in 361 patients. Eighty-six percent of the catheters were placed in patients with hematologic malignancies and most were Piccline (70%). Sixty-one thromboses were identified (incidence of 10%). Fourteen percent of the patients had more than one episode of catheter-related thrombosis. The majority of thromboses was related to a Piccline (93%) and occurred at a mean time of 34 days after the insertion. At the time of thrombosis, the mean platelet count was 169 x 109/L. Previous history of a catheter-related thrombosis (OR = 4.30 (1.48-12.50); p = 0.0075) as well as lymphoma (OR = 3.29 (1.22-8.87); p = 0.0185) were associated with superficial thromboses. The Piccline was associated with both types of thromboses (OR = 5.78 (1.69-19.74); p = 0.0051), especially with superficial thromboses. Most of the catheters (88%) were removed once a thrombosis was identified. The management of anticoagulation varied considerably. No complication associated with thromboses was reported. Conclusions: The incidence of central venous catheter-related thrombosis was 10%. The thrombosis occurred on average 34 days after the insertion. The Piccline was associated with all types of thromboses, especially the superficial ones. A previous history of catheter-related thrombosis and lymphoma were risk factors for superficial thromboses. Further studies are necessary to better define characteristics and optimal management of central catheter-related thrombosis.
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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 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".