Abstract TP367: Decreasing Decision to Transfer Times
Bibliographic record
Abstract
Novant Health Greater Charlotte market is comprised of three advanced primary stroke care centers; one providing 24/7 stroke interventional radiology coverage. To expedite the transfer of patients meeting criteria for mechanical thrombectomy, the stroke best practice teams in the two community primary stroke centers collaborated to develop a protocol to improve the decision to transfer time to meet a goal of 120 minutes from door to skin puncture time, regardless of original transport destination. The Novant Health Charlotte market teams realize the benefit of cohesive physician coverage among the Emergency Department, Radiology and Inpatient Neurology physician providers. CTA scans performed in the non-interventional facilities are readily available to Neuro-Endovascular Radiologists, allowing for prompt interpretation and mobilization of the IR team to prepare for patient arrival. Recognizing internal critical care transport resources are limited and may not be available, the process was facilitated by the development of an activase transport protocol implemented by Mecklenburg County EMS in June of 2016. Since actual transport time is affected by traffic patterns in urban areas, the controllable measure selected by the teams was decision to transfer time. Prior to the initiation of the protocol, the median decision to transfer time for ischemic stroke patients requiring tertiary care was 66.5 minutes. Post protocol implementation the median time was reduced 32% to 44.5 minutes. Across the market, median door to skin puncture time in 2016 is 131.5 minutes. Ongoing evaluation of the transfer process, and multidisciplinary IR case review with identification of process variation is key to the success of this initiative. The Emergency Department at the tertiary care facility has been an instrumental partner in identifying issues that are barriers to timely throughput of these patients. A consistent feedback process informs all team members regarding patient outcomes. Individual case feedback is provided to all direct care givers, EMS crews and stroke team leaders, usually within 24 to 48 hours of the intervention. This data is shared monthly with the stroke best practice teams at the transferring facilities.
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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 | 0.004 | 0.043 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.002 | 0.002 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.060 | 0.008 |
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".