A system for managing patient medical data derived from at least first and second medical devices acquiring respective medical data from a patient includes a proximity detector, for use by the first medical device, for detecting proximity of the second medical device. A command processor responds to the detection of proximity, by initiating generation of signals: (a) to associate patient medical data acquired by the second medical device with patient medical data acquired by the first medical device, and (b) to process patient medical data acquired by the second medical device together with medical data acquired by the first medical device to provide a composite representation of patient medical data.