title: The Effects of Metabolic Syndrome on TpTe Interval and TpTe/QT Ratio in Patients with Normal Coronary Arteries.
abstract: OBJECTIVE
  T wave peak to T wave end (TpTe) interval and TpTe/QT have been accepted as predictors of ventricular arrythmia. In this study our aim is to investigate the effect of metabolic syndome on these parameters in patients with angiographically normal coronary arteries.
  
  
  METHODS
  Thirty patients with metabolic syndrome (4 male, mean age 52±7.8 years) and twenty patients without metabolic syndrome as control group (8 male, mean age 54±9.3 years) were included. TpTe interval and TpTe/QT ratio were measured from the 12-lead electrocardiogram. These parameters were compared between the groups.
  
  
  RESULTS
  When compared with to the control group the systolic and diastolic blood pressure, pulse pressure, waist circumference, triglyceride and fasting plasma glucose levels were higher and HDL cholesterol level was lower in the metabolic syndrome group. In the analysis of electrocardiography, QT dispersion (QTd) and corrected QTd were significantly increased in metabolic syndrome group as compared to the controls group (44±14 versus 30±12 ms and 433±10 versus 405±4 ms, all p value p=0.01). TpTe interval and TpTe/QT ratio were also significantly higher in patient with metabolic syndrome (112±10 versus 91±10 ms and 0.25±0.02 versus 0.22±0.01, all p value p=0.01).
  
  
  CONCLUSIONS
  According to these results, we supposed that TpTe/QT ratio and TpTe interval is prolonged and those patients with metabolic syndrome may be at greater risk of ventricular arrhythmias.
authors.affiliation: Clinic of Cardiology, Bursa Training and Research Hospital, Bursa, Turkey.
authors.forename: Kemal
authors.initials: K
authors.lastname: Karaagac
authors.affiliation: Clinic of Cardiology, Bursa Sevket Yilmaz Training and Research Hospital, Bursa, Turkey.
authors.forename: Ali
authors.initials: A
authors.lastname: Emul
authors.affiliation: Clinic of Cardiology, Bursa Training and Research Hospital, Bursa, Turkey.
authors.forename: Erhan
authors.initials: E
authors.lastname: Tenekecioglu
authors.affiliation: Clinic of Cardiology, Bursa Training and Research Hospital, Bursa, Turkey.
authors.forename: Fahriye Vatansever
authors.initials: FV
authors.lastname: Agca
authors.affiliation: Clinic of Cardiology, Bursa Training and Research Hospital, Bursa, Turkey.
authors.forename: Ozlem Arican
authors.initials: OA
authors.lastname: Ozluk
authors.affiliation: Clinic of Cardiology, Bursa Training and Research Hospital, Bursa, Turkey.
authors.forename: Ahmet
authors.initials: A
authors.lastname: Tutuncu
authors.affiliation: Clinic of Cardiology, Bursa Training and Research Hospital, Bursa, Turkey.
authors.forename: Osman Can
authors.initials: OC
authors.lastname: Yontar
authors.affiliation: Clinic of Cardiology, Bursa Training and Research Hospital, Bursa, Turkey.
authors.forename: Mustafa
authors.initials: M
authors.lastname: Yilmaz
keywords: TpTe/QT ratio; arrhytmia; metabolic syndrome