POCUS-Guided Forearm Nerve Blocks for Analgesia of Acute Hand Ischemia in the Emergency Department
Bibliographic record
Abstract
Background: Acute limb ischemia (ALI) is a vascular emergency associated with significant pain that can be challenging to manage, especially in opioid-tolerant patients. Case Report: A 44-year-old man with opioid use disorder presented with ALI of the right hand not amenable to surgical intervention after self-injection of fentanyl. Despite high-dose opioids, he continued to experience refractory pain. Point of care ultrasound (POCUS)-guided radial and median nerve blocks performed in the emergency department provided substantial relief. Discussion: This case illustrates the novel use of POCUS-guided upper extremity regional anesthesia by emergency physicians to manage ALI pain. POCUS-guided regional anesthesia may be a safe, effective adjunct in select patients, though patients must be closely monitored for complications.
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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 | 0.000 |
| 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 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".