title: Paroxysmal atrial fibrillation in cryptogenic stroke.
abstract: BACKGROUND
  Paroxysmal atrial fibrillation (PAF) is perhaps the most underdiagnosed mechanism of apparent cryptogenic stroke (CS). Various studies have shown that increasing the duration of monitoring can increase the diagnosis of PAF in CS.
  
  
  METHODS
  We compared demographic and risk factors for ischemic stroke across different TOAST (Trial of ORG 10172 in Acute Stroke Treatment) stroke subtypes to look for clinical differences between other subtypes and CS and subsequently performed periodic Holter monitoring and imaging studies in apparent CS patients.
  
  
  RESULTS
  Of the 298 patients with ischemic stroke, 17% had CS. Periodic holter monitoring enabled diagnosis of PAF in 29% of patients. Five of 51 patients with CS had recurrent ischemic stroke and all 5 were demonstrated as PAF on repeated Holter monitoring.
  
  
  CONCLUSIONS
  Long-term periodic rhythm monitoring in patients with apparent CS showed PAF in a significant percentage of CS patients, which altered subsequent treatment.
authors.affiliation: Saint Vincent Hospital.
authors.forename: Neha S
authors.initials: NS
authors.lastname: Dangayach
authors.forename: Kevin
authors.initials: K
authors.lastname: Kane
authors.forename: Majaz
authors.initials: M
authors.lastname: Moonis