IJCS | Volume 32, Nº5, September/October 2019

467 Table 2 - Distribution of patients by hemodynamic and structural variables, according to Atrial Fibrillation Atrial fibrillation Total Yes No N % N % N % Spontaneous contrast 40 100.0% 207 100.0% 247 100.0% Yes 27 67.5% 7 3.4% 34 13.8% No 13 32.5% 200 96.6% 213 86.2% ᵪ 2 (1, N = 247) = 116.10 - p < 0.001 Left atrial dilation degree 40 100.0% 207 100.0% 247 100.0% None 9 22.5% 179 86.5% 188 76.1% Mild 14 35.0% 20 9.7% 34 13.8% Moderate 13 32.5% 7 3.4% 20 8.1% Severe 4 10.0% 1 .5% 5 2.0% Fisher’s exact test - p < 0.001 Presence of thrombus 40 100.0% 207 100.0% 247 100.0% Yes 7 17.5% 0 .0% 7 2.8% No 33 82.5% 207 100.0% 240 97.2% Fisher’s exact test - p < 0.001 Stroke/TIA 40 100.0% 207 100.0% 247 100.0% Yes 7 17.5% 39 18.8% 46 18.6% No 33 82.5% 168 81.2% 201 81.4% ᵪ 2 (1, N = 171) = 0.04 - p = 0.842 ICO 40 100.0% 207 100.0% 247 100.0% Yes 3 7.5% 11 5.3% 14 5.7% No 37 92.5% 196 94.7% 233 94.3% Fisher’s exact test - p = 0.706 Ejection fraction - type 40 100.0% 207 100.0% 247 100.0% EF < 55% 8 20.0% 12 5.8% 20 8.1% EF ≥ 55% 32 80.0% 195 94.2% 227 91.9% Fisher’s exact test - p = 0.007 Mean left atrial appendage velocity - type 40 100.0% 207 100.0% 247 100.0% < 0.4 m/s 24 60.0% 3 1.4% 27 10.9% ≥ 0.4 m/s 16 40.0% 204 98.6% 220 89.1% Fisher’s exact test - p < 0.001 LAA group 40 100.0% 207 100.0% 247 100.0% Thrombogenic 23 57.5% 108 52.2% 131 53.0% Non-thrombogenic 17 42.5% 99 47.8% 116 47.0% ᵪ 2 (1, N = 247) = 0.38 - p = 0.537 TIA: transient ischemic attack; ICO: coronary insufficiency; EF: ejection fraction; LAA: left atrial appendage. Linhares et al. Transesophageal echocardiography and CHA2DS2-Vasc score Int J Cardiovasc Sci. 2019;32(5):460-470 Original Article