A prosthetic heart valve system comprising: a prosthetic heart valve including: a stent extending along a longitudinal axis from an outflow portion to an inflow portion and having an expanded condition, a collapsed condition, and a plurality of cells arranged in circumferential rows; and a valve assembly mounted to the stent; and a first sensor (400', 500, 800) configured to measure physiological data, the first sensor including a body (402', 502, 802) extending along a body axis and a plurality of apertures (410a'-d', 510a-d, 810a-d) extending through the body on opposite sides of the body axis, characterized in that a first suture (S1', S2', S3, S4, S7, S8) extends from a first one of the plurality of apertures (41 0a', 510a, 810a) positioned at a first cell (162a, 162d) to a second one of the plurality of apertures (41 0b', 510b, 810b) positioned at a second cell (162b, 162e) circumferentially adjacent the first cell, and a second suture (S2', S4, S8) extends from a third one of the plurality of apertures (410 c', 510c, 810c) at a position between the first and second cells to a fourth one of the plurality of apertures (41 0d', 510d, 810d) positioned at the second cell, the first suture attaching the first sensor to the stent and acting as a fulcrum so that, in the expanded condition of the stent, the longitudinal axis of the stent is not parallel to the body axis of the first sensor, and in the collapsed condition of the stent, the longitudinal axis of the stent is parallel to the body axis of the first sensor. a prosthetic heart valve including: a stent extending along a longitudinal axis from an outflow portion to an inflow portion and having an expanded condition, a collapsed condition, and a plurality of cells arranged in circumferential rows; and a valve assembly mounted to the stent; and a stent extending along a longitudinal axis from an outflow portion to an inflow portion and having an expanded condition, a collapsed condition, and a plurality of cells arranged in circumferential rows; and a valve assembly mounted to the stent; and a first sensor (400', 500, 800) configured to measure physiological data, the first sensor including a body (402', 502, 802) extending along a body axis and a plurality of apertures (410a'-d', 510a-d, 810a-d) extending through the body on opposite sides of the body axis, characterized in that a first suture (S1', S2', S3, S4, S7, S8) extends from a first one of the plurality of apertures (41 0a', 510a, 810a) positioned at a first cell (162a, 162d) to a second one of the plurality of apertures (41 0b', 510b, 810b) positioned at a second cell (162b, 162e) circumferentially adjacent the first cell, and a second suture (S2', S4, S8) extends from a third one of the plurality of apertures (410 c', 510c, 810c) at a position between the first and second cells to a fourth one of the plurality of apertures (41 0d', 510d, 810d) positioned at the second cell, the first suture attaching the first sensor to the stent and acting as a fulcrum so that, in the expanded condition of the stent, the longitudinal axis of the stent is not parallel to the body axis of the first sensor, and in the collapsed condition of the stent, the longitudinal axis of the stent is parallel to the body axis of the first sensor.