Iatrogenic pulsus alternans in a dog undergoing median sternotomy
Bibliographic record
Abstract
Abstract A 6‐year‐old, 21.8 kg, female, spayed Siberian husky was referred for management of a spontaneous bilateral pneumothorax, due to a ruptured pulmonary bleb. During surgery, sterile saline was instilled on three occasions in order to locate the damaged lung tissue and ensure complete ligation. The development of pulsus alternans, an alternation between strong and weak arterial pulses, was temporally related to saline instillation on each occasion, suggesting an iatrogenic causation. Pulsus alternans was characterised by discordant heart rate (electrocardiography, visual inspection of the heart) and pulse rate (pulse oximeter, Doppler ultrasound probe and manual palpation). Furthermore, alternating high and low peak systolic pressures were evident on the invasive blood pressure waveform. Potential causative factors for pulsus alternans development are presented and discussed. Temporal association with large volumes of intrathoracic saline was considered the most probable cause in the presented case.
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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 | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| 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 | 0.003 | 0.002 |
| Insufficient payload (model declined to judge) | 0.001 | 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 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".