Twofers and transaortic valve replacements.

T he concept of twofers is widely used in a variety of situations and applications ranging from cabling devices in theatrical stage lighting to Broadway tickets to 2 hamburgers for a quarter at Tucker’s Twofers to items of merchandise to something that “satisfies 2 criteria or needs simultaneously.” The paper by Petronio et al. (1), in this issue of JACC: Cardiovascular Interventions, takes this concept to a new level in the analysis of the relationship between the need for permanent cardiac pacing (or consideration of it) in the setting of a specific transaortic valve replacement (TAVR) device, the Medtronic CoreValve (Medtronic, Minneapolis, Minnesota).