Table 1

Incidence of electrocardiographic abnormalities in studied subjects (n=8612)

Number %
Left ventricular hypertrophy128014.9
Ischaemic-like changes3924.6
Conduction disturbances6167.2
 RBBB3183.7
  Incomplete170
  Complete148
 LBBB100.12
 AV conduction disturbances1952.3
  First degree193
  Second degree2
 QRS axis deviation931.1
  Left75
  Right18
Rhythm disturbances5115.9
 Premature contractions2492.9
  Atrial94
  Ventricular155
 Sinus arrhythmias2212.6
  Bradycardia188
  Tachycardia33
 Atrial fibrillation410.48
Others
 WPW syndrome180.21
  • AV, atrioventricular; LBBB, left bundle branch block; RBBB, right bundle branch block; WPW, Wolff-Parkinson-White.