Two successful insertions of peripherally inserted central catheters in a patient with persistent left superior vena cava
Bibliographic record
Abstract
RATIONALE: Peripherally inserted central catheters (PICC), normally located at the lower 1/3rd of the superior vena cava (SVC) and cavo-atrial junction, are commonly used in cancer patients. Persistent left superior vena cava (PLSVC) is a vascular anomaly, in patients with which seldom research was reported about PICC implanted. After obtaining written informed consent, we present a case where two successful insertions of PICC were performed in a 50-year-old female patient with PLSVC and right SVC. PATIENTS CONCERNS: The patient had ovarian cancer and was admitted for chemotherapy using PICC. DIAGNOSES: Ovarian cancer and PLSVC. INTERVENTIONS AND OUTCOMES: Following insertion of PICC in PLSVC, thrombosis developed. PICC was removed after routine anticoagulation therapy. Owing to tumor recurrence, a second PICC was inserted in the right SVC without any complications. LESSONS: PICC insertion in PLSVC for chemotherapy may be associated with an increased risk of deep venous thrombosis of the upper extremity. A right catheter insertion in patient with PLSVC was preferred.
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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 | 0.001 | 0.009 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.002 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.005 | 0.005 |
| Insufficient payload (model declined to judge) | 0.002 | 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".