Effects of Polymethylmethacrylate to Cardiovascular System in Percutaneous Vertebroplasty
Bibliographic record
Abstract
Objective:To evaluate the effects of PMMA injection on vital signs of cardiovascular system during percutaneous vertebroplasty(PVP).Methods:In 48 patients,statistical data of blood pressure,heart rate,and arterial oxygen saturation obtained before,during,5 min after,and 10 min after PMMA injection during percutaneous vertebroplasty were used to ascertain the effects of cardiopulmonary comorbidities and on vital signs of complications with multivariable regression modeling.Results:The mean arterial blood pressure during,5 minutes after,and 10 minutes after PMMA injection were 94.0 mmHg,97.3 mmHg and 97.5 mmHg respectively and were not significantly different from their respective preprocedure values(P=0.19,0.23,0.24).Heart rate during,5 minutes after,and 10 minutes after PMMA injection were 80.5/min,80.4/min and 80.0/min and were not significantly different from preprocedure values(P=0.71,0.92,0.65).SpO2 during,5 minutes,10 minutes after injection were 98.0%,98.0% and 97.4% respectively and were not significantly different from that(98.0%)before injection(P=0.80,0.89).But in 4 cases oxygen saturation was significantly lower at 10 minutes after injection than before injection(P=0.007),although the mean difference was negligible.There seemed to be little association between PMMA injection in PVP and cardiovascular changes.Conclusion:There seems to be no significant association between PMMA injection and systemic cardiovascular derangement during percutaneous vertebroplasty.
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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 | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| 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) | 0.001 | 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".