An eavesdropping assembly for acquiring a measured physiological variable of an individual (501, 601), said assembly comprising: a communication interface (507, 607) configured to be arranged along a wired aortic channel (503, 603), the wired aortic channel (503, 603) extending from (i) an aortic pressure sensor (508, 608) configured to measure aortic blood pressure and provide a signal representing measured aortic blood pressure, to (ii) a central monitoring device (505, 605) configured to receive the signal representing the measured aortic blood pressure, a receiver (504, 604) configured to receive the signal representing the measured aortic blood pressure and wherein the receiver (504, 604) is further configured to analyze the signal representing the measured aortic blood pressure and display information relating to the measured aortic blood pressure based on said analysis, characterized in that the receiver (504, 604) is arranged in a housing separate from the communication interface (507, 607); and the communication interface (507, 607) is configured to eavesdrop on the signal representing measured aortic blood pressure without affecting the signal carried over the wired aortic channel (503, 603), the communication interface (507, 607) is configured to perform at least one of (i) electrically tapping into a conductor of the wired aortic channel (503, 603) via a high-impedance device, and (ii) sensing at least one of a magnetic field and an electric field in the vicinity of the wired aortic channel (503, 603) that is created by the signal passing through a conductor of the wired aortic channel (503, 603), and the communication interface (507, 607) is configured to transmit the signal representing the measured aortic blood pressure signal to the receiver (504, 604), via a wireless connection between the communication interface (507, 607) and the receiver (504, 604). a communication interface (507, 607) configured to be arranged along a wired aortic channel (503, 603), the wired aortic channel (503, 603) extending from (i) an aortic pressure sensor (508, 608) configured to measure aortic blood pressure and provide a signal representing measured aortic blood pressure, to (ii) a central monitoring device (505, 605) configured to receive the signal representing the measured aortic blood pressure, a receiver (504, 604) configured to receive the signal representing the measured aortic blood pressure and wherein the receiver (504, 604) is further configured to analyze the signal representing the measured aortic blood pressure and display information relating to the measured aortic blood pressure based on said analysis, characterized in that the receiver (504, 604) is arranged in a housing separate from the communication interface (507, 607); and the communication interface (507, 607) is configured to eavesdrop on the signal representing measured aortic blood pressure without affecting the signal carried over the wired aortic channel (503, 603), the communication interface (507, 607) is configured to perform at least one of (i) electrically tapping into a conductor of the wired aortic channel (503, 603) via a high-impedance device, and (ii) sensing at least one of a magnetic field and an electric field in the vicinity of the wired aortic channel (503, 603) that is created by the signal passing through a conductor of the wired aortic channel (503, 603), and the communication interface (507, 607) is configured to transmit the signal representing the measured aortic blood pressure signal to the receiver (504, 604), via a wireless connection between the communication interface (507, 607) and the receiver (504, 604).