Table 2.

Patients' preoperative risk factors.

Series	Type of Valve	h/o CVA	h/o PVD	Renal disease	STS score	EuroSCORE
Makkar et al. [42]	Sapien	48 (27%)	54 (30%)		11.2	26.4
Kodali et al. [14]	Sapien	95 (27%)	148 (43%)		11.8	29.3
Thomas et al. [12, 13]	Sapien		49 (11%)	121 (26%)		25.7
Thomas et al. [12, 13]	Sapien		161 (28%)	189 (33%)		29.1
Himbert et al. [10] (TF)	Sapien		4 (8%)	16 (31%)	15	25
Himbert et al. [10] (TA)	Sapien		7 (30%)	12 (52%)	18	28
Grube et al. [9]	CoreValve	11 (8%)	28 (21%)	38 (28%)	8.9	23.4
Litzler et al. [15]	Sapien	6 (10%)				27.5
Tamburino et al. [43]	CoreValve	48 (7%)	127 (19%)	154 (23%)		23
Avanzas et al. [17]	CoreValve					16
Kempfert et al. [11]	Sapien		142 (48%)	8 (3%)	12	31
Gotzmann et al. [18]	CoreValve					21
Bleiziffer et al. [19]	Sapien and CoreValve	26 (11%)	61 (27%)	48 (21%)	7	21