MétaCan
Menu
Back to cohort
Record W2513944490 · doi:10.4212/cjhp.v69i4.1574

Anticoagulant and Antiplatelet Prescribing Patterns for Patients with Atrial Fibrillation after Percutaneous Coronary Intervention

2016· article· en· W2513944490 on OpenAlexaffvenue
Erin A. Woods, Margaret L. Ackman, Michelle M. Graham, Sheri L. Koshman, Rosaleen Boswell, Arden R. Barry

Bibliographic record

VenueThe Canadian Journal of Hospital Pharmacy · 2016
Typearticle
Languageen
FieldMedicine
TopicAtrial Fibrillation Management and Outcomes
Canadian institutionsUniversity of AlbertaAlberta HealthUniversity of Alberta HospitalUniversity of British ColumbiaAlberta Health Services
Fundersnot available
KeywordsMedicineAtrial fibrillationClopidogrelPercutaneous coronary interventionInternal medicineWarfarinCardiologyAntithromboticPopulationAnticoagulantAspirinMyocardial infarction

Abstract

fetched live from OpenAlex

ABSTRACT Background: Current guidelines recommend triple antithrombotic therapy (TAT), defined as acetylsalicylic acid (ASA), clopidogrel, and warfarin, for patients with nonvalvular atrial fibrillation who have undergone percutaneous coronary intervention with stent implantation. The choice of anticoagulant/antiplatelet therapy in this population is ambiguous and complex, and prescribing patterns are not well documented. Objective: To characterize local prescribing patterns for anticoagulant/antiplatelet therapy after percutaneous coronary intervention in patients with nonvalvular atrial fibrillation. Methods: A chart review was conducted at a single quaternary cardiology centre. Patients with nonvalvular atrial fibrillation were identified via medical records, and those who underwent percutaneous coronary intervention were identified using a local clinical patient registry. Adult inpatients with nonvalvular atrial fibrillation and a CHADS2 score (based on congestive heart failure, hypertension, age ≥ 75 years, diabetes mellitus, prior stroke) of 1 or higher who underwent percutaneous coronary intervention from 2011 to 2013 were included. Patients undergoing cardiovascular surgery or transcatheter aortic valve replacement, those with mechanical devices requiring anticoagulation, and those with an allergy to any component of TAT were excluded. Results: Seventy patients were included. The median age was 75 years, and 52 (74%) were men. At discharge, 30 (43%) were receiving TAT and 27 (39%) were receiving dual antiplatelet therapy (clopidogrel and ASA). No patients received the combination of warfarin and clopidogrel. Among those who received TAT, 90% (19 of 21) who received a bare metal stent had a recommended duration of 1 month, and 75% (6 of 8) who received a drug-eluting stent had a recommended duration of 1 year. Direct-acting oral anticoagulants with 2 antiplatelet drugs were prescribed for 9% (6 of 70) of the patients, and 10% (7 of 70) received ticagrelor and ASA with or without warfarin. Overall, the combination of ASA, oral anticoagulant, and P2Y12 inhibitor was used for 54% (38/70) of the patients. Conclusions: Fewer than half of the patients in this study received TAT, and almost 20% received no–evidence-based therapy with a direct-acting oral anticoagulant or ticagrelor, alone or in combination. Despite current guideline recommendations, the rate of TAT utilization was lower than rates reported in the literature. RÉSUMÉ Contexte : Les lignes directrices actuelles recommandent une trithérapie antithrombotique, composée d’acide acétylsalicylique (AAS), de clopidogrel et de warfarine, pour les patients atteints de fibrillation auriculaire non valvulaire qui ont subi l’implantation d’une endoprothèse par intervention coronarienne percutanée. Le choix de traitement par anticoagulant ou antiplaquettaire pour cette population est ambigu et complexe. De plus, les habitudes de prescription ne sont pas bien documentées. Objectif : Offrir un portrait des habitudes locales de prescription de traitements par anticoagulant ou antiplaquettaire suite à une intervention coronarienne percutanée chez les patients atteints de fibrillation auriculaire non valvulaire. Méthodes : Une analyse des dossiers médicaux a été menée dans un seul centre quaternaire de cardiologie. Les patients atteints de fibrillation auriculaire non valvulaire ont été identifiés à l’aide de leurs dossiers médicaux. Ceux qui avaient subi une intervention coronarienne percutanée ont été trouvés en consultant un registre local de patients. Les patients adultes hospitalisés qui souffraient d’une fibrillation auriculaire non valvulaire, qui présentaient un score CHADS2 de 1 ou plus (calculé en fonction de la présence d’insuffisance cardiaque congestive, d’hypertension, d’âge égal ou supérieur à 75 ans, de diabète et d’accident vasculaire cérébral antérieur) et qui avaient subi une intervention coronarienne percutanée entre 2011 et 2013 ont été admis. Les patients qui avaient subi une chirurgie cardiovasculaire ou un remplacement valvulaire aortique par cathéter, ceux dotés de prothèses mécaniques nécessitant une anticoagulothérapie et ceux allergiques à un ou plusieurs éléments de la trithérapie antithrombotique ont été exclus. Résultats : L’âge médian des 70 patients admis était de 75 ans et 52 d’entre eux étaient des hommes. Au moment du congé, 30 (43 %) recevaient une trithérapie antithrombotique et 27 (39 %) recevaient une bithérapie antiplaquettaire (AAS et clopidogrel). Aucun patient n’a reçu une association de warfarine et de clopidogrel. Parmi ceux qui ont reçu une trithérapie antithrombotique, la durée recommandée du traitement était d’un mois pour 90 % (19 sur 21) de ceux qui ont reçu une endoprothèse métallique nue et d’un an pour 75 % (6 sur 8) de ceux qui ont reçu une endoprothèse à élution de médicaments. On a prescrit pour 9 % (6 sur 70) des patients un anticoagulant oral direct accompagné de deux antiplaquettaires. De plus, 10 % (7 sur 70) des patients ont reçu du ticagrelor et de l’AAS avec ou sans warfarine. Dans l’ensemble, la combinaison d’AAS, d’un anticoagulant oral et d’un inhibiteur du P2Y12 a été employée chez 54 % (38 sur 70) des patients. Conclusions : Moins de la moitié des patients de la présente étude ont reçu une trithérapie antithrombotique et près de 20 % ont reçu un traitement non fondé sur des données probantes composé d’un anticoagulant oral direct ou de ticagrelor, employés seuls ou en association. Malgré les recommandations des lignes directrices actuelles, le taux de recours à la trithérapie antithrombotique était plus faible que les pourcentages présentés dans la littérature.

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)0.000
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 score0.019
Threshold uncertainty score0.038

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.002
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

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 head0.024
GPT teacher head0.283
Teacher spread0.259 · 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

Citations6
Published2016
Admission routes2
Has abstractyes

Explore more

Same venueThe Canadian Journal of Hospital PharmacySame topicAtrial Fibrillation Management and OutcomesFrench-language works237,207