title: Reduction in heart rate variability in patients with systemic lupus erythematosus.
abstract: OBJECTIVE
  To determine whether heart rate variability and cardiovascular reflex tests are abnormal in patients with systemic lupus erythematosus (SLE).
  
  
  METHODS
  We measured heart rate variability (24 h ambulatory recordings), and used baroreflex sensitivity testing and cardiovascular reflex tests in a cross sectional, case-control study. Those taking drugs with cardiovascular activity were excluded.
  
  
  RESULTS
  Determination of heart rate variability was simple to perform, well tolerated, and found to be reduced in the patients with lupus, but not strongly related to disease activity or duration.
  
  
  CONCLUSIONS
  This may reflect underlying autonomic dysfunction; longitudinal studies will determine full clinical relevance.
authors.affiliation: Department of Rheumatology, St. George's Hospital, London, UK.
authors.forename: C J
authors.initials: CJ
authors.lastname: Laversuch
authors.forename: H
authors.initials: H
authors.lastname: Seo
authors.forename: H
authors.initials: H
authors.lastname: Modarres
authors.forename: D A
authors.initials: DA
authors.lastname: Collins
authors.forename: W
authors.initials: W
authors.lastname: McKenna
authors.forename: B E
authors.initials: BE
authors.lastname: Bourke
mesh_terms: D000328:Adult; D018660:Blood Pressure Monitoring, Ambulatory; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D005260:Female; D006321:Heart / Q000503:physiopathology*; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D011311:Pressoreceptors / Q000502:physiology; D013564:Sympathetic Nervous System / Q000503:physiopathology