An apparatus for monitoring EMG signals of a patient's laryngeal muscles includes an endotracheal tube having an exterior surface, and a tube coating applied to the exterior surface via spraying of a homogeneous solution onto the endotracheal tube or immersion of the endotracheal tube in the homogeneous solution. A conductive electrode is formed on the tube coating. The conductive electrode is configured to receive the EMG signals from the laryngeal muscles.
