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Finding Atrial Fibrillation in Patients With Unexplained Stroke Using Longterm Cardiac Monitoring (SURPRISE)

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ClinicalTrials.gov Identifier: NCT01498146
Recruitment Status : Unknown
Verified July 2014 by Hanne Christensen, Bispebjerg Hospital.
Recruitment status was:  Active, not recruiting
First Posted : December 23, 2011
Last Update Posted : July 16, 2014
Information provided by (Responsible Party):

December 21, 2011
December 23, 2011
July 16, 2014
April 2010
October 2013   (Final data collection date for primary outcome measure)
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Complete list of historical versions of study NCT01498146 on ClinicalTrials.gov Archive Site
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Finding Atrial Fibrillation in Patients With Unexplained Stroke Using Longterm Cardiac Monitoring
Stroke Prior to Diagnosis of Atrial Fibrillation Using Longterm Observation With Implantable Cardiac Monitoring Apparatus Reveal(SURPRISE) -the SURPRISE Study
The SURPRISE study investigates atrial fibrillation(AFIB) in patients with a previous unexplained stroke. It uses long term monitoring of the heart of up to three years, searching for paroxysmal atrial fibrillation(PAF) otherwise undetected in this population.

The SURPRISE study investigates the patients with cryptogenic stroke or transient ischemic attack (TIA), monitoring them with a cardiac loop recorder for up to three years.

it aims at estimating the amount of paroxysmal atrial fibrillation within our population of cryptogenic stroke patients.

Standard workup for a stroke patient does offer cardiac evaluation, but monitoring is limited to the time admitted, often just a few days.

Time Perspective: Prospective
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Probability Sample
the patients are included from the investigators stroke unit and day clinic
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Biering-Sørensen T, Christensen LM, Krieger DW, Mogelvang R, Jensen JS, Højberg S, Høst N, Karlsen FM, Christensen H. LA emptying fraction improves diagnosis of paroxysmal AF after cryptogenic ischemic stroke: results from the SURPRISE study. JACC Cardiovasc Imaging. 2014 Sep;7(9):962-3. doi: 10.1016/j.jcmg.2014.02.003. Epub 2014 Apr 9.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
Unknown status
October 2014
October 2013   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Computerized Tomography (CT) or Magnetic resonance imaging (MRI) verified cryptogenic stroke or TIA;
  • > 18 years of age,
  • the ability to provide a written consent

Exclusion Criteria:

  • prior or known AFIB
  • AF found during work up including 24 hour telemetric monitoring.
Sexes Eligible for Study: All
18 Months and older   (Child, Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
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Hanne Christensen, Bispebjerg Hospital
Bispebjerg Hospital
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Principal Investigator: Hanne Christensen, MD, PhD, DMSci University of Copenhagen
Bispebjerg Hospital
July 2014