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Record W2161515375 · doi:10.1213/ane.0b013e3182937d8b

Malignant Hyperthermia in Canada

2013· article· en· W2161515375 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
aboutThe title or abstract carries a Canadian signal from the geographic lexicon.

Bibliographic record

VenueAnesthesia & Analgesia · 2013
Typearticle
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicIon channel regulation and function
Canadian institutionsToronto General HospitalUniversity Health NetworkUniversity of Toronto
Fundersnot available
KeywordsMalignant hyperthermiaHyperthermiaMedicineInternal medicinePathology

Abstract

fetched live from OpenAlex

BACKGROUND: Between 1992 and 2011, 373 Canadian individuals with adverse anesthetic reaction were referred to the Malignant Hyperthermia Unit in Toronto, Ontario, Canada for malignant hyperthermia (MH) diagnostic testing. We analyzed the epidemiologic characteristics of the index adverse anesthetics for those probands who were confirmed to be MH susceptible. METHODS: One hundred twenty-nine proband survivors of adverse anesthetic reactions, whose MH susceptible status was confirmed by caffeine-halothane contracture testing were selected. Individuals were excluded if the index anesthetic record was not available for review. Data regarding demographics, clinical signs, laboratory findings, treatment, and complications were retrospectively compiled and analyzed. A Fisher exact test and χ test were applied to compare categorical variables. The Wilcoxon rank-sum test was applied with continuous variables. RESULTS: Young males (61.2%) dominated among selected patients. Seventeen of 129 (13.2%) patients had prior unremarkable anesthesia. Anesthetic triggers were volatile-only (n = 58), succinylcholine-only (n = 20), or both volatile and succinylcholine (n = 51). Eight (6.2%) cases occurred in the postanesthetic care unit. There were no reactions after discharge from the postanesthetic care unit. The most frequent clinical signs were hyperthermia (66.7%), sinus tachycardia (62.0%), and hypercarbia (51.9%). Complications occurred in 20.1% of patients, the most common complication being renal dysfunction. When 20 or more minutes between the first adverse sign and dantrolene treatment elapsed, complication rates increased to ≥30%. CONCLUSIONS: This is the first Canadian study in 3 decades to report nationwide data on MH epidemiology. Features that differ from earlier reports include a 15.5% incidence of reactions triggered by succinylcholine alone and lower complication rates. In agreement with previously published studies, we confirmed in this independent dataset that increased complication rates were associated with an increased time interval between the first adverse clinical sign and dantrolene treatment. This underscores the need for early diagnosis and rapid dantrolene access and administration in anesthetizing locations using either succinylcholine or volatile anesthetic drugs.

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.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.286
Threshold uncertainty score0.706

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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 head0.006
GPT teacher head0.187
Teacher spread0.181 · 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