This trial is active, not recruiting.

Condition stroke
Sponsor Bispebjerg Hospital
Start date April 2010
End date October 2013
Trial size 100 participants
Trial identifier NCT01498146, H-4-2010-014


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.

United States No locations recruiting
Other countries No locations recruiting

Study Design

Time perspective prospective

Eligibility Criteria

Male or female participants at least 18 months old.

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.

Additional Information

Official title Stroke Prior to Diagnosis of Atrial Fibrillation Using Longterm Observation With Implantable Cardiac Monitoring Apparatus Reveal(SURPRISE) -the SURPRISE Study
Principal investigator Hanne Christensen, MD, PhD, DMSci
Description 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.
Trial information was received from ClinicalTrials.gov and was last updated in July 2014.
Information provided to ClinicalTrials.gov by Bispebjerg Hospital.