A closed ‘pop‐off’ valve and patient safety incident: A human factors approach to understanding error
Bibliographic record
Abstract
Abstract A 3‐month‐old, 1.4 kg, female domestic short hair cat was scheduled for ovariohysterectomy surgery during a final‐year veterinary student clinical rotation. Shortly after transfer to the operating room (OR) and connection to the anaesthetic machine, signs consistent with high gas pressure build up in the anaesthetic breathing system were observed. Because a clear view of the anaesthetic machine was obscured, the cat was immediately disconnected from the breathing system and transferred to a different anaesthetic machine. Inspection of the OR anaesthetic machine revealed that the adjustable pressure limiting (APL) (‘pop‐off') valve was closed, despite completion of a machine checkout procedure at the start of the day. The valve was opened, the cat returned to the OR, and surgery completed. Recovery was uneventful. Investigation of the incident revealed several contributing factors leading to the APL valve being left closed.
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.
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 | 0.005 | 0.027 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.005 | 0.001 |
| Science and technology studies | 0.004 | 0.005 |
| Scholarly communication | 0.006 | 0.006 |
| Open science | 0.002 | 0.004 |
| Research integrity | 0.005 | 0.005 |
| Insufficient payload (model declined to judge) | 0.006 | 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".