Risk factors for postoperative short-term cognitive dysfunction in patients undergoing carotid endarterectomy
Bibliographic record
Abstract
Objective To identify the risk factors for postoperative short-term cognitive dysfunction (STCD) in the patients undergoing carotid endarterectomy. Methods A total of 158 patients with carotid artery stenosis, aged≥18 yr, without preoperative cognitive dysfunction, undergoing carotid endarterectomy from January 1, 2014 to May 30, 2017 in our hospital, were selected.Factors including age, sex, height, weight, education, presurgical complications (hypertension, type Ⅱ diabetes mellitus, myocardial infarction and brain infarction), degree of internal carotid artery stenosis, preoperative mean arterial pressure (MAP), amount of dexmedetomidine, duration of operation, time of carotid artery occlusion, MAP during occlusion period, intraoperative volume of fluid infused (crystalloid solution and colloid solution), urine volume, blood loss, significant change in electroencephalogram (EEG) and visual analogue scale scores at 24 h after surgery were collected.Mini-Mental State Examination was used to evaluate the cognitive function at 24 h after surgery.The patients were divided into STCD group and non-STCD group according to whether or not patients developed postoperative STCD.The risk factors of which P values were less than 0.05 would enter the bivariate logistic regression analysis to stratify the risk factors for postoperative STCD. Results Forty-nine patients developed postoperative STCD (31.0%). The intraoperative amount of colloid solution infused<5 ml/kg, increase in MAP<20% of the baseline value during the occlusion period, and significant change in EEG during the occlusion period were independent risk factors for postoperative STCD (P<0.05). Conclusion The intraoperative amount of colloid solution infused<5 ml/kg, increase in MAP<20% of the baseline value during the occlusion period, and significant change in EEG during the occlusion period are independent risk factors for postoperative STCD in the patients undergoing carotid endarterectomy. Key words: Cognition disorders; Risk factors; Endarterectomy, carotid
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| 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) | 0.001 | 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".