Unexpected retention of a spinal needle in a morbidly obese patient: a case report and technical reflection
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Spinal anesthesia is considered a safe and effective anesthetic technique. However, some complications may be encountered in clinical settings such as needle fracture or retention, which is a rare but serious complication. Morbid obesity is a recognized risk factor for such technical difficulties due to increased tissue depth and altered anatomical landmarks. A 19-year-old male (BMI > 40) presented for elective umbilical hernia repair. Spinal anesthesia was attempted using a 25 G Vygon needle (120 mm). During the successful puncture, the patient suddenly hyperextended his back. On attempted needle withdrawal and redirection, only the introducer was retrieved; the spinal needle was retained subcutaneously. Surgical removal via a 10 mm incision at 6 cm depth was successful. Multiple factors contributed: morbid obesity, sudden patient movement, weak contact between introducer and needle, and potentially defective equipment. This case underscores the need for vigilance, appropriate equipment, and immediate multidisciplinary management.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 |
| 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) | 0.000 | 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