An endotracheal tube electrode assembly comprises an elongated electrode body, a plurality of electrodes and a layer of insulating material. The elongated electrode body has a semi-circular cross-sectional shape defining an endotracheal tube-receiving channel that extends along a length of the elongated electrode body. The plurality of electrodes is provided on a surface of the elongated electrode body outside of the endotracheal tube-receiving channel. The electrodes extend along a length of the elongated electrode body. Each of the electrodes is formed from a conductive material applied directly onto the elongated electrode body. The layer of insulating material formed on the elongated electrode body covering a portion of each one of the electrodes, thereby providing an uncovered portion of the at least one pair of electrodes to serve as a patient contacting thereof.
