A guidewire for a medical device is disclosed. In one embodiment, the guidewire includes a corewire having a proximal end portion and a distal end portion, an elongate shroud disposed about the corewire, the shroud having a distal end, and a plug coupled with the distal end portion of the corewire and the distal end of the shroud, the plug having a distal, non-traumatic tip portion, an interior between the corewire and the shroud being configured to receive a sensor.