Abstract TP436: Minimally Invasive Endoscopic Hematoma Evacuation vs. Best Medical Management for Spontaneous Basal Ganglia Intracerebral Hemorrhage
Bibliographic record
Abstract
Background: We conducted a case-control study to assess the relative safety and efficacy of Apollo assisted minimally invasive endoscopic surgery (MIS) for clot evacuation in patients with basal-ganglia intracerebral hemorrhage (ICH). Methods: We evaluated consecutive patients with acute basal ganglia ICH at a single center over a 42-month period. Patients received either best medical management according to established guidelines (controls) or Apollo assisted MIS (cases) with best medical management. The following outcomes were compared before and after propensity-score matching (PSM): in-hospital mortality, discharge National Institutes of Health Stroke Scale (NIHSS) score, discharge disposition, modified Rankin Scale scores at discharge and at 3 months. Results: Among 224 ICH patients, 19 (8.5%) underwent MIS [mean age 50.9±10.9; 26.3% female, median ICH volume 40 (IQR; 25-51)]. The interventional cohort was younger with higher ICH volume and stroke severity as compared to the medically managed cohort. After PSM, 18 patients in the MIS cohort were matched to 54 medically managed individuals. The two cohorts did not differ in any of the baseline characteristics. The median ICH volume at 24 hours was lower in the intervention group [40cm 3 (IQR:25-50) vs. 15cm 3 (IQR:5-20), p<0.001). The two cohorts did not differ in any of the pre-specified outcomes measures with the exception of in-hospital mortality which was lower in intervention cohort (28% vs. 56%, p=0.041). The three-month mortality rates tended to be lower in the intervention cohort (38% vs. 60%, p=0.107). The intensive care unit length of stay was similar in the two groups [median LOS in days (IQR): intervention: 9 (7-12) vs. control: 9 (6-12), p=0.497]. The distribution of mRS-scores at discharge and at three months did not differ between the intervention and the control cohort (p by Cochran-Mantel-Haenszel test>0.4). Conclusions: Minimally invasive Apollo assisted endoscopic hematoma evacuation was associated with lower rates of in-hospital mortality in patients with spontaneous basal ganglia ICH. These findings support a randomized controlled trial of MIS versus medical-management for ICH.
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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 | 0.002 | 0.004 |
| 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 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".