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Table 3 Electrocardiogram (ECG) findings in seropositive and seronegative volunteers

From: Association of Trypanosoma cruzi infection with risk factors and electrocardiographic abnormalities in northeast Mexico

  Abnormal ECG
    Seropositive   Seronegative
Community N°/ [Total of seropositive (%)] N°/ [Total of seronegative (%)]
Sex/Age‡/ECG alteration Sex/Age‡/ECG alteration
Monterrey 1/8 (12.5) 3/8 (37.5)
F/54/RBBHB F/55/AF, M/57/ST, F/56/ST
Allende 1/10 (10) 2/10 (20)
M/57/RBBHB M/58/AF, M/59/RBBHB
General Teran 4/10 (40) 3/10 (30)
M/53/RBBHB M/67/RBBHB, M/56/LBBHB, M/65/RBBHB
F/65/LBBHB, F/68/RBBB F/65/ST, F/67/ST
Doctor Arroyo 2/7 (28.5) 1/7 (14.2)
F/54/LBBB, F/61/RBBHB F/55/AF
Total 8/35 (22.8) 9/35 (25.7)
  1. χ 2 comparing ECG of seropositive and seronegative groups (P = 0.002) , and ‡ age (P = 0.0001) were significant. AF = Atrial fibrillation; LBBB = Left bundle branch block; LBBHB = Left bundle branch hemiblock; RBBHB = Right bundle branch hemiblock; RBBB = Right bundle branch block; ST = Sinus tachycardia.