“…Median procedural time was 140 (122-180) minutes (average 158 minutes) and did not significantly differ compared with EAMS-guided procedures (P = 0.13). Coronary sinus angiography rate (83%) and median fluoroscopy time (median 16 [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] minutes, average 20 minutes, mean DAP 88114 cGy*cm 2 ) were significantly higher than EAMS-guided procedures (P < 0.001 and P < 0.001, respectively). The LV lead was successfully implanted in 242 (97%) patients and complications were observed in 17 (7%) including CS dissection (N = 7), dislodgment of the atrial (N = 1) or LV lead (N = 4) requiring repositioning, pocket hematoma (N = 2), pocket infection (N = 1), and acute kidney failure (N = 2).…”