title: [Recurrent syncope of unknown origin. Diagnosis with implantable "loop" recorders].
abstract: BACKGROUND
  In about a third of cases of recurrent syncope a diagnosis cannot be established despite extensive cardiovascular and neurologic testing. In patients without underlying heart disease the sensitivity of conventional diagnostic testing is low.
  
  
  METHODS
  A 33-year-old male patient underwent implantation of a loop recorder (Reveal) after negative neurological and cardiovascular testing. One month after implantation sinus node arrest could be documented during a presyncope. The patient underwent pacemaker implantation and remains asymptomatic since then.
  
  
  CONCLUSIONS
  In patients with syncope and a negative conventional diagnostic workup the implantable loop recorder is a helpful and cost-effective diagnostic tool.
authors.affiliation: Abteilung für Kardiologie, Kerckhoff-Klinik, Bad Nauheim.
authors.forename: J
authors.initials: J
authors.lastname: Sperzel
authors.forename: J
authors.initials: J
authors.lastname: Carlsson
authors.forename: A
authors.initials: A
authors.lastname: Erdogan
authors.forename: W
authors.initials: W
authors.lastname: Ehrlich
authors.forename: B
authors.initials: B
authors.lastname: Schulte
authors.forename: H F
authors.initials: HF
authors.lastname: Pitschner
authors.forename: J
authors.initials: J
authors.lastname: Neuzner
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D015716:Electrocardiography, Ambulatory / Q000295:instrumentation*; D006801:Humans; D008297:Male; D019736:Prostheses and Implants; D012008:Recurrence; D012804:Sick Sinus Syndrome / Q000175:diagnosis*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013575:Syncope / Q000209:etiology*