ABC | Volume 111, Nº2, August 2018

Original Article Sampaio et al Monitoring of rhythm, atrial fibrillation and stroke Arq Bras Cardiol. 2018; 111(2):122-131 Table 3 – Holter monitoring results by study groups Variables Stroke/TIA (n = 26) Controls (n = 26) p-value F Atrial fibrillation (< 30 seconds) 1 (3.8%) - - Atrial tachycardia (AT) 16 (61.5%) 9 (34.6%) 0.095 < 65 years 1 (16.7%) 2 (25%) 1.000 ≥ 65 years 15 (75%) 7 (38.9%) 0.047 Frequent SVES* < 65 years 5 (19.2%) 3 (11.5%) 0.703 ≥ 65 years 5 (25%) 3 (16.7%) 0.697 Frequent AT or SVES 17 (65.4%) 10 (38.5%) 0.095 < 65 years 1 (16.7%) 2 (25%) 1.000 ≥ 65 years 16 (80%) 8 (44.4%) 0.042 Ventricular tachycardia 6 (23.1%) 5 (19.2%) 1.000 < 65 years - 1 (12.5%) - ≥ 65 years 6 (30%) 4 (22.2%) 0.719 Frequent SVES 6 (23.1%) 7 (26.9%) 1.000 < 65 years - 1 (12.5%) - ≥ 65 years 6 (30%) 6 (33.3%) 1.000 SVES: supraventricular extrasystoles; F Fisher’s exact test; *frequent SVES was defined as > de 30 events/hour Table 4 – POIP monitoring results by study groups Variables Stroke/TIA (n = 26) Controls (n = 26) p-value F Atrial fibrillation (< 30 seconds)* 6 (23.1%) 1 (3.8%) 0.099 First 24h 2 (7.7%) 1 (3.8%) 1.000 Atrial tachycardia 22 (84.6%) 18 (69.2%) 0.324 < 65 years 4 (66.7%) 5 (62.5%) 1.000 ≥ 65 years 18 (90%) 13 (72.2%) 0.222 First 24h 12 (46.2%) 14 (53.8%) 0.782 Frequent SVES ** 4 (15.4%) 6 (23.1%) 0.727 < 65 years - 1 (12.5%) - ≥ 65 years 4 (20%) 5 (27.8%) 0.709 First 24h 2 (7.7%) 6 (23.1%) 0.249 Frequent atrial tachycardia or SVES 22 (84.6%) 19 (73.1%) 0.499 < 65 years 4 (66.7%) 5 (62.5%) 1.000 ≥ 65 years 18 (90%) 14 (77.8%) 0.395 First 24h 12 (46.2%) 14 (53.8%) 0.782 Ventricular tachycardia 7 (26.9%) 7 (26.9%) 1.000 < 65 years - 2 (25%) - ≥ 65 years 7 (35%) 5 (27.8%) 0.734 First 24h 3 (11.5%) 4 (15.4%) 1.000 Frequent ventricular extrasystoles 8 (30.8%) 7 (26.9%) 1.000 < 65 years 1 (16.7%) 1 (12.5%) 1.000 ≥ 65 years 7 (35%) 6 (33.3%) 1.000 First 24h 6 (23.1%) 6 (23.1%) 1.000 SVES: supraventricular extrasystoles; F Fisher’s exact test; *all cases identified in patients aged ≥65 years; **frequent SVES was defined as > de 30 events/hour 127