A therapeutic endotracheal tube assembly for insertion into a patient's trachea to ventilate, to maintain patency of the patient's airway, and to deliver therapeutic electromagnetic radiation to the patient, the therapeutic endotracheal tube assembly comprising: an endotracheal tube having: a) a lumen defined by a tube wall, an upper tube portion having a proximate end, and a lower tube portion having a forward end for insertion into the patient's trachea, and b) an inflatable cuff surrounding the tube wall proximate the forward end; and an EMR delivery system comprising: a) an EMR source for emitting non-ultraviolet, therapeutic EMR having intensity sufficient to activate desired therapeutic properties within the patient, the EMR source further comprises a range of fluency covering 0.1 J/cm2 to 1kJ/cm2, and a range of powers from 0.005mW to 1W, and power density range covering 1mW/cm2 to 1W/cm2; b) an EMR conduction line conducive to the propagation of EMR from the EMR source along the endotracheal tube, the EMR conduction line having a coupling end and a distal end and being insertable into the endotracheal tube to deliver non-ultraviolet, therapeutic EMR within the patient at sufficient intensity to activate desired therapeutic properties; and c) a coupling to connect the EMR source to the coupling end of the EMR conduction line; characterised in that: the endotracheal tube further comprises a ventilator collar, the upper tube portion having a proximate end coupled to a ventilator collar; and the therapeutic endotracheal tube assembly further comprises an endotracheal adapter disposed intermediate of the ventilator collar and the ventilator, the EMR conduction line is disposed directly within the EMR port so that the EMR conduction line is insertable into the ventilation channel and then into the lumen of the tube body of the endotracheal tube and may be subsequently removed. an endotracheal tube having: a) a lumen defined by a tube wall, an upper tube portion having a proximate end, and a lower tube portion having a forward end for insertion into the patient's trachea, and b) an inflatable cuff surrounding the tube wall proximate the forward end; and a) a lumen defined by a tube wall, an upper tube portion having a proximate end, and a lower tube portion having a forward end for insertion into the patient's trachea, and b) an inflatable cuff surrounding the tube wall proximate the forward end; and an EMR delivery system comprising: a) an EMR source for emitting non-ultraviolet, therapeutic EMR having intensity sufficient to activate desired therapeutic properties within the patient, the EMR source further comprises a range of fluency covering 0.1 J/cm2 to 1kJ/cm2, and a range of powers from 0.005mW to 1W, and power density range covering 1mW/cm2 to 1W/cm2; b) an EMR conduction line conducive to the propagation of EMR from the EMR source along the endotracheal tube, the EMR conduction line having a coupling end and a distal end and being insertable into the endotracheal tube to deliver non-ultraviolet, therapeutic EMR within the patient at sufficient intensity to activate desired therapeutic properties; and c) a coupling to connect the EMR source to the coupling end of the EMR conduction line; a) an EMR source for emitting non-ultraviolet, therapeutic EMR having intensity sufficient to activate desired therapeutic properties within the patient, the EMR source further comprises a range of fluency covering 0.1 J/cm2 to 1kJ/cm2, and a range of powers from 0.005mW to 1W, and power density range covering 1mW/cm2 to 1W/cm2; b) an EMR conduction line conducive to the propagation of EMR from the EMR source along the endotracheal tube, the EMR conduction line having a coupling end and a distal end and being insertable into the endotracheal tube to deliver non-ultraviolet, therapeutic EMR within the patient at sufficient intensity to activate desired therapeutic properties; and c) a coupling to connect the EMR source to the coupling end of the EMR conduction line; the endotracheal tube further comprises a ventilator collar, the upper tube portion having a proximate end coupled to a ventilator collar; and the therapeutic endotracheal tube assembly further comprises an endotracheal adapter disposed intermediate of the ventilator collar and the ventilator, the EMR conduction line is disposed directly within the EMR port so that the EMR conduction line is insertable into the ventilation channel and then into the lumen of the tube body of the endotracheal tube and may be subsequently removed.