Perineural Entrapment of an Interscalene Stimulating Catheter
Why this work is in the frame
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Bibliographic record
Abstract
A patient undergoing elective total shoulder arthroplasty had an Arrow Stimucath™ (Arrow International Reading, PA, USA) stimulating catheter inserted in the region of the interscalene brachial plexus using an ultrasound-guided in-plane approach. There was subsequent difficulty in removing the catheter and traction was associated with painful paraesthesia in the patient's thumb. Plain X-ray revealed a hook-shaped deformity of the tip and surgical exploration was required to remove the catheter, the tip of which appeared to be trapped within the sheath of the brachial plexus. We speculate that the mechanism for entrapment in this case was deformation of the catheter tip into a hook-like shape. The subsequent catheter-neural interaction prevented asymptomatic removal. We recommend that removal of peripheral nerve catheters be attempted only after resolution of sensory block so as to enable patients to report pain or paraesthesia. Imaging with ultrasound or X-rays may help ascertain catheter tip location and confirm whether deformity is present. We also recommend a low threshold for proceeding to surgical extraction, particularly if neurological symptoms are present.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| 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) | 0.000 | 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 it