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Atrial Fibrillation/Flutter Outcome Risk Determination (AFFORD)

This study is ongoing, but not recruiting participants.
Sponsor:
Collaborator:
Information provided by (Responsible Party):
Tyler Barrett, Vanderbilt University
ClinicalTrials.gov Identifier:
NCT01138644
First received: May 28, 2010
Last updated: July 14, 2014
Last verified: July 2014

May 28, 2010
July 14, 2014
June 2010
December 2014   (final data collection date for primary outcome measure)
  • Incidence of an atrial-fibrillation or atrial flutter related adverse event at 5 days from the index ED visit. [ Time Frame: 5 days from ED visit ] [ Designated as safety issue: Yes ]
    We define adverse events as the following patient death, 5-day ED return visits and unscheduled hospital admissions for AF-related complaints, AF-related cardiovascular and thromboembolic complications.
  • Incidence of an Atrial fibrillation or atrial flutter related adverse event within 30 days of index ED visit [ Time Frame: 30 days from ED visit ] [ Designated as safety issue: Yes ]
    We define adverse events as the following patient death, 30-day ED return visits and unscheduled hospital admissions for AF-related complaints, AF-related cardiovascular and thromboembolic complications.
Same as current
Complete list of historical versions of study NCT01138644 on ClinicalTrials.gov Archive Site
Patient death from any causes [ Time Frame: 30 days ] [ Designated as safety issue: Yes ]
We will record patient deaths due to any cause within 30 days of their ED visit. Only deaths classified as having cardiovascular causes will be included in the development of the prediction rule.
Same as current
Not Provided
Not Provided
 
Atrial Fibrillation/Flutter Outcome Risk Determination
The "AFFORD" Study: Atrial Fibrillation/Flutter Outcome Risk Determination

It is our hypotheses that 1) readily available Emergency Department data can be utilized in an Atrial Fibrillation clinical prediction rule to identify those patients at low or high risk for adverse outcomes; 2) Assigned risk can be utilized to drive physician decision-making by identifying patients who do not require hospital admission (low risk) and patients needing hospitalization (high risk); and 3) a facile version of the AFPR will be easily incorporated into standard Emergency Department patient management systems and assist physicians with risk stratification of patients presenting with Atrial Fibrillation.

AF: Impact on Present and Future National Health Over 2 million people in the United States have Atrial Fibrillation, the most common sustained arrhythmia.1 That number of patients is expected to increase to 5.6 million by 2050.1 Atrial Fibrillation is associated with a 4-5 fold increase in the risk of stroke, 3-fold increase in the risk of heart failure and 1.5-1.9 increased risk of death.2-6 The prevalence of Atrial Fibrillation increases as individuals age; 5.9% of those over 65 years of age and 9% of those over 80 years are diagnosed with the arrhythmia.25 The lifetime risk for development of Atrial Fibrillation is estimated to be 1 in 4 for men and women forty years of age and older.26 The proper management of patients with AF is critical due to the well-documented association with heart failure and stroke.2-6, 11, 27.

The number of Emergency Department visits for complaints related to Atrial Fibrillation increased by 88% between 1993 and 2003 and now account for approximately 1% percent of all Emergency Department visits in the United States.7, 24 More than 65% of these Atrial Fibrillation visits result in hospital admission and over $6.65 billion in expenditures, including $3.88 billion for hospitalizations, $1.53 billion for outpatient treatment and nearly $240 million for prescription drugs.8, 24 Patients with a primary admission diagnosis of AF had a mean length of stay and hospital charge of 4 days and $7000 in 1999.28 Over the past 20 years, the admission rate for Atrial Fibrillation has increased by 66%.29-31 The combination of increasing Atrial Fibrillation prevalence, unnecessarily high admission rate and Emergency Department crowding is likely to severely burden our healthcare system.

Observational
Observational Model: Case-Only
Time Perspective: Prospective
Not Provided
Retention:   Samples With DNA
Description:

whole blood for storing and conducting genetic testing.

Non-Probability Sample

Participants for this study will be those with AF who present to the ED for their care. This study population will come from all walks of life and will not exclude any one group, sex, ethnicity, etc.

  • Atrial Fibrillation
  • Atrial Flutter
Not Provided
Not Provided
Barrett TW, Storrow AB, Jenkins CA, Harrell FE Jr, Miller KF, Moser KM, Russ S, Roden DM, Darbar D. Atrial fibrillation and flutter outcomes and risk determination (AFFORD): design and rationale. J Cardiol. 2011 Sep;58(2):124-30. doi: 10.1016/j.jjcc.2011.06.007. Epub 2011 Aug 4.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Active, not recruiting
600
June 2015
December 2014   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • ED patients 18 years and older
  • Provide informed consent
  • Have a documented diagnosis of AF or atrial flutter on electrocardiogram or rhythm strip from an ED, prehospital provider or outside medical facility on day of enrollment.
  • Present with signs (tachycardia, dyspnea) or symptoms (palpitations, chest pain, shortness of breath, weakness, lightheadedness, pre-syncope, or syncope) consistent with primary symptomatic AF
  • Patients whose primary complaint is not directly related to their AF diagnosis (e.g. evaluation for febrile illness, gastrointestinal complaint, injury) BUT have a secondary complaint consistent with symptomatic AF that requires ED evaluation (e.g. new AF diagnosis, AF associated with inadequate rate control (defined as resting heart rate greater than 100bon), AF associated with heart failure symptoms, AF in the setting of CVA or TIA, AF associated with other thromboembolic complications).

Exclusion Criteria:

  • Patients who are under the age of 18
  • Previously enrolled patients
  • ED patients who present with complaints unrelated to their AF (e.g. sprained ankle,pharyngitis) and have adequately rate (<100 bpm at rest) or rhythm controlled-AF.
Both
18 Years and older
No
Contact information is only displayed when the study is recruiting subjects
United States
 
NCT01138644
The "AFFORD" Study, NHLBI
No
Tyler Barrett, Vanderbilt University
Vanderbilt University
National Heart, Lung, and Blood Institute (NHLBI)
Principal Investigator: Tyler W Barrett, MD Vanderbilt University
Vanderbilt University
July 2014

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP