AIM:To investigate P-wave dispersion(PWD) in patients with metabolic syndrome(MetS).METHODS: Sixty-two patients with MetS [34 males,28 females;mean age(55.2±8.2) years] and 58 control subjects without MetS(30 males,28 females;mean age 54.6±8.7 years) were recruited.MetS diagnosis was based on the International Diabetes Federation MetS criteria and central obesity was evaluated by waist circumference(≥90 cm in male and ≥80 cm in females) according to the epidemiological data from Shanghai and Hong Kong in Ch...