Hyperacute Superior Vena Cava Syndrome associated with Central Venous Catheter Insertion
Bibliographic record
Abstract
Superior vena cava (SVC) syndrome is classically thought of as a complication of malignancy. However, SVC syndrome secondary to indwelling central venous catheters (CVCs) is another important entity. Amongst those with CVCs who develop SVC syndrome, the majority are attributed to thrombosis. Aside from thrombosis, CVCs can lead to SVC syndrome secondary to mechanical obstruction of blood flow in an already narrowed vessel.We present the first case of hyperacute SVC syndrome that developed within 6 hours of insertion of a CVC into a patient's right internal jugular vein alongside a pre-existing right internal jugular tunnelled dialysis line. With removal of the line, the patient's symptoms resolved completely within hours. The patient also was found to have stenosis of superior vena cava, likely secondary to multiple instrumentations.Physicians must be diligent to monitor for this complication in patients who have had previous instrumentations of major vessels when inserting CVCs. HOW TO CITE THIS ARTICLE: Edginton S, Fundytus A. Hyperacute Superior Vena Cava Syndrome associated with Central Venous Catheter Insertion. Indian J Crit Care Med 2019;23(3):152-154.
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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 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.003 | 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".