Delayed Time to Emergency Hip Surgery in Patients Taking Oral Anticoagulants
Bibliographic record
Abstract
Abstract Introduction Surgical intervention within 48 hours of admission in patients with acute hip fractures has been associated to lower morbidity and mortality. Patients anticoagulated with Vitamin K Antagonists (VKAs) have longer time to corrective surgery than those not anticoagulated. Sparse data exists on time to surgery (TTS) in patients taking direct oral anticoagulants (DOACs). The aim of this study is to establish TTS among non-anticoagulated and anticoagulated patients taking either VKA or DOAC. Materials and Methods We conducted a retrospective cohort study of consecutive patients admitted with acute hip fracture between July 1, 2016 and December 31, 2017. Patient-, anticoagulant- and surgery-related characteristics were collected. The primary outcome was TTS calculated from time of admission. Median TTS with interquartile range (IQR) was compared among 3 groups of patients: DOAC, VKA and No OAC. Results A total of 472 patients were included: 12.5% (59/472) were anticoagulated (28/472 on VKAs and 31/472 on DOACs). Median TTS was longer in the VKA group [64 hours (IQR: 50-84)] and in the DOAC group [(61 hours; IQR: 42 to 77)] versus the No OAC group [44 hours (IQR: 28-63), p =0.0006 and p=0.003 respectively]. There was no significant difference in median TTS in the VKA group versus the DOAC group (p =0.6396). Conclusion Patients taking either VKA or DOAC have significant delays to emergency hip fracture surgery compared to those not anticoagulated. An action plan aimed at early identification and cessation of anticoagulation is warranted in this vulnerable group of patients. Keywords: Direct Oral anticoagulants, Vitamin K antagonists, Anticoagulation, Acute hip fracture, Emergency surgery Disclosures Tagalakis: BMS-Pfizer: Other: participated on ad boards; Sanofi Aventis: Other: investigator initiated grant;participated on ad boards; Pfizer: Other: participated on ad boards; Bayer: Other: participated on ad boards; Servier: Other: participated on ad boards.
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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 | 0.000 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 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".