EEG operative and post-operative patient monitoring system and method

A method for simultaneously monitoring a plurality of patients comprising:

• (a) removably connecting a set of EEG electrodes to the scalp of each patient and a set of EKG electrodes and a blood pressure sensor to the body of each patient;
• (b) presenting a set of stimuli to each patient and amplifying and digitizing the brain wave evoked responses to the stimuli and the patient's ongoing irain wave activity collected from the EEG electrodes to provide a first set of EEG, EKG and blood pressure digital data representing each patient's brain waves, heart activity and blood pressure in the patient's first state and recording the first set of digital data in computer system memory;
• (c) subsequently presenting the same set of stimuli to each patient and amplifying and digitizing the brain wave responses to the stimuli and the patient's on-going brain wave activity and heart activity and blood pressure to provide a second set of digital data for each patient;
• (d) using the computer system to statistically compare the first and second sets of digital data for each patient on a feature-by-feature basis and providing a warning if a combined multi-variant measure is abnormal by being of a difference between the first and second sets of digital data larger than a selected range of differences.