Abstract: A system and method monitors patient biological indicator signals, analyzes the indicators and transmits control signals to patient medication administration devices according to the analysis of the signals.

Abstract: A cannula tip for insertion in a patient's nostril includes nostril- and cannula-ends, with a cannula-end that has a greater cross section than that of the nostril end. The cross section of the cannula tip may decrease from its cannula end to its nostril end linearly or non-linearly.

Abstract: Humidified respiratory gas is supplied to a patient through an open cannula placed within the openings of the patient's nostrils. The open cannula allows respiratory gas to escape the patient's nostrils and thereby reduce back pressure experienced by a patient during the expiratory periods of the patient's breathing cycle. An open cannula configuration also eliminates uncomfortable masks that may otherwise prevent an obstructive breathing disordered patient from effectively using respiratory therapy.