Feasibility of blood conservation strategies in pulmonary endarterectomy for chronic thromboembolic pulmonary hypertension
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Bibliographic record
Abstract
Blood transfusion requirements were reviewed for a consecutive series of 25 patients undergoing elective pulmonary endarterectomy (PEA) between August 2005 and March 2009 in our institution. Patients were divided into two groups based on the implementation of a conservative blood transfusion algorithm that combined antifibrinolytic therapy, intraoperative blood sequestration, blood salvage and lack of correction of coagulation parameters in the absence of ongoing bleeding. Despite similar perioperative coagulation profiles in the two groups, the introduction of a conservative blood transfusion algorithm was associated with a significant increase in the number of patients receiving no homologous blood products. Of 16 patients who underwent surgery after the introduction of the algorithm, nine (56%) required no homologous blood products and five (31%) required one or two units of homologous red blood cells only. The international normalized ratio normalized within six to 12 hours after discontinuation of cardiopulmonary bypass without transfusion of fresh frozen plasma or platelets in 13 of the 16 patients. In conclusion, a conservative blood transfusion strategy allows PEA to be safely performed with no or minimal blood product transfusions in a majority of patients despite deep hypothermic circulatory arrest.
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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) | 0.001 | 0.001 |
| 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 it