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Record W4387305729 · doi:10.4212/cjhp.3368

Management of Tachycardia-Mediated Cardiomyopathy: Experience from the Vancouver General Hospital Cardiac Function Clinic (TMC-EXPLOR Study)

2023· article· en· W4387305729 on OpenAlexaffvenueabout
Aliya Daulat, Jenny MacGillivray, M. Sidsworth, Ricky D. Turgeon

Bibliographic record

VenueThe Canadian Journal of Hospital Pharmacy · 2023
Typearticle
Languageen
FieldMedicine
TopicCardiac Arrhythmias and Treatments
Canadian institutionsUniversity of British ColumbiaVancouver General HospitalSt. Paul's Hospital
Fundersnot available
KeywordsMedicineEjection fractionAtrial fibrillationHeart failureInternal medicineCardiologyAtrial flutterMineralocorticoid receptorSpironolactoneCardiomyopathyVentricular tachycardiaAldosterone

Abstract

fetched live from OpenAlex

Background: Tachycardia-mediated cardiomyopathy (TMC) is a reversible form of heart failure with reduced ejection fraction (HFrEF), most commonly caused by atrial fibrillation or atrial flutter. Evidence for its management is scarce, and practice patterns are highly variable. Objective: To describe management patterns for HFrEF and atrial arrhythmias in patients with TMC at a specialty heart failure clinic. Methods: This retrospective cohort study involved adults with HFrEF and a physician-determined diagnosis of TMC, with an initial visit for this problem between October 2018 and October 2019. The 2 primary outcomes, evaluated at 1 year after the initial visit, were the proportion of patients receiving triple therapy (combination of angiotensin receptor–neprilysin inhibitor [or angiotensin-converting enzyme inhibitor/angiotensin II receptor blocker if ejection fraction improved to > 40% by 1 year], ß-blocker, and mineralocorticoid receptor antagonist at any dose) and the proportion receiving or with a plan to receive rhythm control. Results: A total of 59 participants met the inclusion criteria. The mean age was 73 years, 39 patients (66%) were male, and 42 (71%) had hypertension. At 1-year follow-up, 42 (71%) were receiving triple therapy, and rhythm control was attempted or planned for 20 (34%). Among the 17 patients (29%) not receiving triple therapy, a mineralocorticoid receptor antagonist was the agent most commonly omitted. Conclusions: In a specialty heart failure clinic, most patients with TMC were receiving triple therapy, with a mineralocorticoid receptor antagonist being the agent most commonly missing among those not receiving triple therapy. One-third of patients with TMC had received a rhythm-control strategy. These gaps in HFrEF therapy and rhythm control represent key areas for quality improvement initiatives in the management of patients with TMC. RÉSUMÉ Contexte : La cardiomyopathie rythmique (CMR) est une forme réversible d’insuffisance cardiaque à fraction d’éjection réduite (HFrEF), le plus souvent causée par la fibrillation auriculaire ou le flutter auriculaire. Les données probantes relatives à sa prise en charge sont rares et les modèles de pratique sont très variables.Objectif : Décrire les schémas de prise en charge de l’HFrEF et des arythmies auriculaires chez les patients atteints d’une CMR dans une clinique spécialisée en insuffisance cardiaque. Méthodes : Cette étude de cohorte rétrospective impliquait des adultes atteints d’HFrEF et ayant reçu un diagnostic de CMR déterminé par un médecin, avec une première visite pour ce problème de santé entre octobre 2018 et octobre 2019. Les 2 résultats principaux, évalués 1 an après la première visite, étaient les suivants : 1) la proportion de patients recevant une trithérapie (association récepteur de l’angiotensine-néprilysine (ARNi) [ou inhibiteur de l’enzyme de conversion de l’angiotensine/antagoniste des récepteurs de l’angiotensine II si la fraction d’éjection s’est améliorée à > 40 % à 1 an], un traitement par ß-bloquant et un antagoniste des récepteurs des minéralocorticoïdes à n’importe quelle dose); et 2) la proportion recevant ou prévoyant de recevoir un médicament antiarythmique. Résultats : Au total, 59 participants répondaient aux critères d’inclusion. L’âge moyen était de 73 ans; 39 patients (66 %) étaient des hommes et 42 (71 %) avaient de l’hypertension. Au marqueur d’un an, 42 (71 %) recevaient une trithérapie et un médicament antiarythmique a été tenté ou était prévu pour 20 (34 %) patients. Parmi les 17 patients (29 %) ne recevant pas de trithérapie, l’agent le plus souvent omis était l’antagoniste des récepteurs des minéralocorticoïdes. Conclusions : Dans une clinique spécialisée dans l’insuffisance cardiaque, la plupart des patients atteints d’une CMR recevaient une trithérapie, l’antagoniste des récepteurs minéralocorticoïdes étant l’agent le plus souvent absent chez ceux qui n’en recevaient pas. Un tiers des patients atteints d’une CMR avaient reçu un médicament antiarythmique. Ces lacunes concernant la thérapie HFrEF et la gestion de l’arythmie représentent des domaines clés pour les initiatives d’amélioration de la qualité dans la prise en charge des patients atteints d’une CMR.

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)0.001
metaresearch head score (Gemma)0.002
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: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.241
Threshold uncertainty score0.479

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.002
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0010.000
Scholarly communication0.0010.000
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 head0.023
GPT teacher head0.294
Teacher spread0.271 · 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".

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Citations3
Published2023
Admission routes3
Has abstractyes

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