Abstract: A prosthetic cardiac valve is provided, which is configured to be delivered to a patient in a constrained delivery configuration, and which includes a frame and a plurality of prosthetic leaflets. The frame defines a central longitudinal axis when the prosthetic cardiac valve is in an expanded deployment configuration, and includes interconnected stent struts arranged so as to define interconnected stent cells that include upstream-most stent cells and non-upstream-most stent cells. The plurality of prosthetic leaflets are coupled to the frame so as to allow blood flow in a downstream direction and inhibit blood flow in an upstream direction. The prosthetic cardiac valve further includes first and second electrodes, which are disposed at or near respective upstream peaks of first and second ones of the non-upstream-most stent cells, respectively. Other embodiments are also described.

Abstract: An electrical-component add-on is provided for use with a prosthetic cardiac valve including a tubular frame. The electrical-component add-on includes a support and one or more electrical components. The support is (a) configured to assume delivery and deployed configurations, (b) configured to be positioned above, at, or below an annulus of a native cardiac valve of a heart, and (c) shaped as a ring when in the deployed configuration, so as to receive the tubular frame of the prosthetic cardiac valve within the support. The one or more electrical components are supported by the support, and include an antenna and one or more electrodes. Other embodiments are also described.