title: Electrocardiographic changes in mitral valve prolapse syndrome.
abstract: BACKGROUND
  Mitral valve prolapse syndrome (MVP) is the most common valvular abnormalityin the young and is correlated with increased frequency of cardiac dysrhythmias and sudden death.The aim of this study was to compare frequency of "early repolarization" in electrocardiogram(ECG) between MVP patients and healthy adults.
  
  
  METHODS
  In this cross-sectional study, we compared ECG presentations of early repolarizationincluding notch in descending arm of QRS and J-point and/or ST segment changes in 100 patientswith MVP with 100 healthy individuals. MVP patients were referred to cardiology clinic withsymptoms of palpitation, chest pain or anxiety.
  
  
  RESULTS
  The mean age in patients with MVP was significantly less than healthy subjects (29.5 ±9.3 years versus 31.0 ± 6.9 years in control group, P= 0.1967). We detected early repolarizationas a prevalent sign in ECG of patients which was a notch in descending arm of QRS and/or STsegment or J-point elevation seen in 74% of patients ( 51% in inferior leads and 23% in I and aVLleads) , whilst the same findings were seen in 8 men (8%) in control group (P= 0.0001).
  
  
  CONCLUSIONS
  Early repolarization in ECG presented as a notch in descending arm of QRS and/or ST segment or J-point elevation is more frequent in in young patients with MVP syndrome.
authors.affiliation: Rajaie Cardiovascular Medical & Research Center, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammad Mehdi
authors.initials: MM
authors.lastname: Peighambari
authors.affiliation: Rajaie Cardiovascular Medical & Research Center, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Azin
authors.initials: A
authors.lastname: Alizadehasl
authors.affiliation: Rajaie Cardiovascular Medical & Research Center, Iran University of Medical Sciences, Tehran, Iran.
authors.forename: Ziae
authors.initials: Z
authors.lastname: Totonchi
keywords: Early Repolarization; Electrocardiogram; Mitral Valve Prolapse
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