Disclosed is a patient monitor control unit (10) comprising a processor arrangement (11, 13) adapted to receive a series of ultrasound measurements from a sensor (30) comprising at least one configurable ultrasound transducer； process said series of ultrasound measurements to obtain haemodynamic data of a patient coupled to the sensor； control a patient monitor (20) to display the haemodynamic data； evaluate the haemodynamic data to detect a variance in said data； and generate a reconfiguration signal for the ultrasound transducer, such as to cause systematic adjustment of the ultrasound beam angle, wherein the timing of said generation is a function of said evaluation. The haemodynamic data may be stable enough to warrant delay of the reconfiguration to the end of the trace displayed on the patient monitor, but a reconfiguration signal may also have to be generated immediately. The ultrasound sensor can be a wearable ultrasound sensor or a transesophageal echocardiography (TEE) probe. Also disclosed are a patient monitoring system, a method of operating a patient monitor control unit and a computer program product for implementing such a method.
