Electrocardiographic characteristics of patients at admission Characteristics Total (n=92) Successful TA (n=68) Unsuccessful TA (n=24) p n (%) n (%) n (%) Atrioventricular block 15 (16, 5) 11 (16, 4) 4 (16, 7) 1F New infarction area Posterior wall 3 (3, 3) 2 (2, 9) 1 (4, 2) 0, 402F Lower wall 41 (44, 6) 28 (41, 2) 13 (54, 2) 0, 271 Anterior wall 48 (52, 2) 38 (55, 9) 10 (41, 7) 0, 231 Right ventricular 0 0 0 ST (mm) 3, 2 ± 1, 3 3, 3 ± 1, 3 2, 7 ± 1, 0 0, 044 Comment: In general, clinical and electrocardiographic characteristics are relatively similar between the two study groups.