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Optimum Blood Pressure Target After Lacunar Stroke

2014· article· en· W2058247372 on OpenAlexaff
Ernesto L. Schiffrin

Bibliographic record

VenueHypertension · 2014
Typearticle
Languageen
FieldMedicine
TopicBlood Pressure and Hypertension Studies
Canadian institutionsJewish General Hospital
Fundersnot available
KeywordsLacunar strokeBlood pressureStroke (engine)MedicineRandomized controlled trialInternal medicineCardiologyIschemic stroke

Abstract

fetched live from OpenAlex

The recent report of the Secondary Prevention of Small Subcortical Strokes (SPS3) trial, a randomized controlled clinical trial of secondary prevention of stroke targeting systolic blood pressures (BPs) <130 versus 130 to 149 mm Hg in patients with recent but not acute subcortical lacunar stroke,1 and the associated Comment2 conclude that €œAlthough the reduction in stroke was not significant, our results support that in patients with recent lacunar stroke, the use of a systolic-blood-pressure target of less than 130 mm Hg is likely to be beneficial. € 1 Indeed, the Comment underlined that €œthe SPS3 trial was underpowered to identify or exclude confidently a slight, but nevertheless clinically important, increase in serious complications of hypotension with systolic blood pressure lower than 130 mm Hg. € 2 However, the cover of August 10 to 16, 2013 issue of The Lancet that carries the article on SPS3 and the associated Comment reads €œThe implications of SPS3 are that clinicians should endeavour to achieve and maintain systolic blood pressures lower than 130 mm Hg in patients who have survived 2 weeks or more after subcortical lacunar ischemic stroke. € This assertion is essentially based on the consistency of results across subgroups, the consistency of results (19% reduction in events) with other studies of primary or secondary prevention of different types of stroke, at similar differences of systolic BP between groups, in this particular trial 11 mm Hg between the achieved BP of the high-target group (138 mm Hg) and the low-target group (127 mm Hg), among the 3020 subjects with MRI-proven lacunar strokes followed for 3 to 6 years.[...]

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.002
metaresearch head score (Gemma)0.005
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.002
Threshold uncertainty score0.012

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.005
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0020.001
Bibliometrics0.0010.001
Science and technology studies0.0010.000
Scholarly communication0.0010.001
Open science0.0000.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0010.000

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.

Opus teacher head0.017
GPT teacher head0.228
Teacher spread0.210 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations2
Published2014
Admission routes1
Has abstractno

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