A portable defibrillator according to embodiments of the present invention includes a defibrillator engine configured to receive defibrillator information from defibrillator sensors coupled to a patient and display the defibrillator information； an external device engine configured to receive information from medical device sensors coupled to the patient； a medical device virtual machine configured to display the patient parameter information from the external device engine； and a display screen operating a user interface through which the defibrillator engine displays the defibrillator information and the medical device virtual machine displays the patient parameter information from the external device engine.
