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Electronic Alerts for Stroke Prevention in Patients With Atrial Fibrillation or Atrial Flutter (AF-ALERT)

29 oktober 2018 uppdaterad av: Samuel Z.Goldhaber, MD, Brigham and Women's Hospital

Alert-Based Computerized Decision Support for Stroke Prevention in High-Risk Hospitalized Patients With Atrial Fibrillation: A Randomized, Controlled Trial (AF-ALERT)

Atrial fibrillation (AF) is the most preventable cause of stroke. CHADS and CHA2DS2VASc scores predict the likelihood of stroke in patients with nonvalvular AF. Atrial flutter confers a similar risk of stroke as atrial fibrillation. Anticoagulant therapy with warfarin, dabigatran, rivaroxaban, apixaban, and edoxaban is effective for prevention of thromboembolic stroke in most patients with AF. However, despite widely available risk stratification tools, five options for anticoagulation, and evidence-based practice guidelines, thromboprophylaxis for stroke prevention in AF is under-prescribed in the U.S., Europe, and worldwide. The investigators have previously demonstrated the efficacy of an alert-based computerized decision support (CDS) strategy for prevention of symptomatic venous thromboembolism (VTE) in at-risk hospitalized patients not receiving any thromboprophylaxis. The investigators' goal is to create and evaluate an alert-based CDS strategy for stroke prevention in patients with nonvalvular AF or atrial flutter in a randomized controlled trial.

Studieöversikt

Status

Avslutad

Betingelser

Intervention / Behandling

Detaljerad beskrivning

Atrial fibrillation (AF) is the most preventable cause of stroke. CHADS and CHA2DS2VASc scores predict the likelihood of stroke in patients with nonvalvular AF. Atrial flutter confers a similar risk of stroke as atrial fibrillation. Anticoagulant therapy with warfarin, dabigatran, rivaroxaban, apixaban, and edoxaban is effective for prevention of thromboembolic stroke in most patients with AF. However, despite widely available risk stratification tools, five options for anticoagulation, and evidence-based practice guidelines, thromboprophylaxis for stroke prevention in AF is under-prescribed in the U.S., Europe, and worldwide. The investigators have previously demonstrated the efficacy of an alert-based computerized decision support (CDS) strategy for prevention of symptomatic venous thromboembolism (VTE) in at-risk hospitalized patients not receiving any thromboprophylaxis. The investigators' goal is to create and evaluate an alert-based CDS strategy for stroke prevention in patients with nonvalvular AF or atrial flutter in a randomized controlled trial. The investigators have the following specific aims:

Aim #1 (Primary Efficacy Endpoint)- To assess whether an alert-based computerized decision support strategy increases prescription of anticoagulation during hospitalization, at discharge, and at 90 days from enrollment.

Hypothesis #1- An alert-based computer decision support (CDS) strategy will increase prescription of prescription of anticoagulation during hospitalization, at discharge, and at 90 days from enrollment.

Aim #2 (Secondary Efficacy Endpoint)- To determine the potential impact of an alert-based computerized decision support strategy on the frequency of a composite of major adverse cardiovascular events at 90 days, defined as cerebrovascular accident, systemic embolism, myocardial infarction (MI), and all-cause mortality at 90 days from enrollment.

Hypothesis #2- This study will provide proof-of-concept data, including event rates, from which to design a larger randomized control trial to assess whether an alert-based CDS strategy will reduce the frequency of a composite of major adverse cardiovascular events at 90 days, defined as cerebrovascular accident, systemic embolism, myocardial infarction (MI), and all-cause mortality at 90 days from enrollment.

Studietyp

Interventionell

Inskrivning (Faktisk)

458

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studieorter

  • Förenta staterna
    • Massachusetts
      • Boston, Massachusetts, Förenta staterna, 02115
        • Brigham and Women's Hospital

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

21 år och äldre (Vuxen, Äldre vuxen)

Tar emot friska volontärer

Nej

Kön som är behöriga för studier

Allt

Beskrivning

Inclusion Criteria:

  • High-risk patients ≥ 21 years old with paroxysmal, persistent, or permanent nonvalvular AF or atrial flutter (CHA2DS2VASc score ≥ 1) who are not prescribed anticoagulant therapy for stroke prevention and are hospitalized at BWH will be eligible for randomization.

Exclusion Criteria:

  • <21 years old
  • no diagnosis of AF or atrial flutter
  • not hospitalized at BWH

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Förebyggande
  • Tilldelning: Randomiserad
  • Interventionsmodell: Parallellt uppdrag
  • Maskning: Enda

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: Alert Group
If the patient is randomized to the alert group, their ordering provider will receive a computer electronic alert notifying the responsible provider that his or her patient is high-risk for stroke due to AF or atrial flutter and that the patient is not ordered to receive anticoagulant therapy.
Övrig: Computer Electronic Alert
A computer program that will issue an on-screen electronic alert notifying the responsible provider that his or her patient is high-risk for stroke due to AF or atrial flutter and that the patient is not ordered to receive anticoagulant therapy. The alert will provide options for anticoagulation for stroke prevention in AF as well as additional information in the form of suggested reading.
Inget ingripande: Control Group
If the patient is randomized to the control group, the computer program will not issue an on-screen electronic alert.

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Frequency of prescription of anticoagulation during hospitalization, at discharge, and at 90 days from enrollment.
Tidsram: 90 days
Defined as prescription of therapeutic dose anticoagulation
90 days

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Frequency of composite of major adverse cardiovascular events at 90 days
Tidsram: 90 days
Defined as cerebrovascular accident, systemic embolism, myocardial infarction (MI), and all-cause mortality at 90 days from enrollment
90 days
Frequency of stroke or transient ischemic attack (TIA) at 90 days
Tidsram: 90 days
An acute stroke was defined as a new, focal neurologic deficit of sudden onset, lasting at least 24 hours, not due to a readily identifiable nonvascular cause (e.g., brain tumor, trauma), as confirmed by a neurologist. All strokes required confirmation by imaging or autopsy. TIA was defined as a transient episode of neurologic dysfunction caused by suspected focal cerebral, spinal cord, or retinal ischemia without evidence of acute infarction and confirmed by a neurologist.
90 days
Frequency of acute myocardial infarction at 90 days
Tidsram: 90 days
Acute MI was defined as the detection of a rise and/or fall of cardiac biomarkers (cardiac troponin T), with at least one value being elevated above the 99th percentile upper reference limit and with at least one of the following: 1) symptoms of myocardial ischemia; 2) new (or presumably new) significant ST-segment/T-wave changes or left bundle branch block; 3) development of pathological Q waves on ECG; 4) new loss of viable myocardium or regional wall motion abnormality by imaging; or 5) identification of intracoronary thrombus by angiography or autopsy.
90 days
Frequency of all cause mortality at 90 days
Tidsram: 90 days
All-cause mortality was determined by review of the EHR. Causes of death were classified as stroke, myocardial infarction, pulmonary embolism, other cardiovascular cause, bleeding, cancer, or non-cardiovascular and non-cancer.
90 days
Frequency of major bleeding or clinically relevant non-major bleeding at 90 days
Tidsram: 90 days
Defined by the International Society on Thrombosis and Haemostasis [ISTH] bleeding classification system) at 90 days from enrollment.14 Using the ISTH classification, bleeding was defined as major if it was overt and associated with a decrease in the hemoglobin level of 2 g/dL or more, required the transfusion of 2 or more units of blood, occurred into a critical site, or contributed to death. Clinically relevant non-major bleeding was defined as overt bleeding not meeting the criteria for major bleeding but associated with medical intervention, surgical intervention, or interruption of the study drug.
90 days
Frequency of systemic embolism at 90 days
Tidsram: 90 days
Systemic embolism was defined as sudden loss of perfusion of a limb or extracranial organ
90 days

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Brigham and Women's Hospital

Samarbetspartners

Daiichi Sankyo, Inc.

Utredare

  • Huvudutredare: Samuel Z Goldhaber, MD, Brigham and Women's Hospital

Publikationer och användbara länkar

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Allmänna publikationer

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Faktisk)

1 maj 2016

Primärt slutförande (Faktisk)

1 februari 2018

Avslutad studie (Faktisk)

1 september 2018

Studieregistreringsdatum

Först inskickad

6 januari 2015

Först inskickad som uppfyllde QC-kriterierna

12 januari 2015

Första postat (Uppskatta)

15 januari 2015

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

31 oktober 2018

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

29 oktober 2018

Senast verifierad

1 oktober 2018

Mer information

Termer relaterade till denna studie

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • 2014P002317

Plan för individuella deltagardata (IPD)

Planerar du att dela individuella deltagardata (IPD)?

Nej

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