The potential benefit of a hybrid operating environment among severely injured patients with persistent hemorrhage
Bibliographic record
Abstract
BACKGROUND: Selecting the appropriate initial destination (operating theater [OR], angiography suite, or intensive care unit [ICU]) in persistently hypotensive injured patients can be extremely challenging. The purpose of this study was to define the flow, interventions, and outcomes of these patients. METHODS: All persistently hypotensive (two or more systolic blood pressures < 90 mmHg) severely injured (Injury Severity Score [ISS] ≥ 12) adult patients (1995-2012) were analyzed over the first 24 hours at a Level I trauma referral center. Standard statistical methodology was used (p < 0.05). RESULTS: Of 911 patients with an initial systolic blood pressure of less than 90 mm Hg (prehospital or initial trauma bay reading), 56% remained persistently hypotensive. These patients had a mean age of 41 years, were 73% male, and blunt injured in 87% of the cases. Initial destinations included the OR (53%), ICU (29%), trauma ward (13%) after resuscitation and diagnostic imaging, and interventional angiography suite (5%). Of all hypotensive patients, 67% received computed tomography either before or after initial transfer from the trauma bay. Of the patients who were moved to the OR, 64% were subsequently transferred to the ICU and 23% to the ward, and 14% died in the OR itself. Within the OR, 97% of the patients underwent an intervention (79% laparotomies). A total of 7% of the patients required both emergent operative and angiographic interventions. These were most commonly due to ongoing hemorrhage from pelvic fractures or major hepatic lacerations. Mortality was higher in patients who underwent operation before angiography (90% vs. 32%, p = 0.002). The median hospital length of stay was 22 days (ICU stay, 8 days). The mortality (<24 hours) of all persistently hypotensive patients was 22%. CONCLUSION: Up to 7% of patients in this cohort could benefit from the utility of a hybrid RAPTOR [Resuscitation with Angiography, Percutaneous Therapy Operative Repair] suite. A "direct to the RAPTOR suite" policy (i.e., bypass emergency department) must be used with caution. LEVEL OF EVIDENCE: Therapeutic study, level IV.
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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 | 0.000 | 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 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".