The PARTNER II Trial: Placement of AoRTic TraNscathetER Valves - PII B

Cohort B was a 1:1 randomized, controlled study independently powered to compare transcatheter heart valve therapy with the first generation (SAPIEN™ THV) system to transcatheter heart valve therapy with the second generation (SAPIEN XT THV) system in patients who could not undergo surgery (inoperable). Patients in the control arm of Cohort B received an Edwards SAPIEN THV with the associated delivery system while patients in the treatment arm of Cohort B received an Edwards SAPIEN XT THV with the associated delivery system.