Methods and apparatus for determining the occurrence of an apnea, patency and/or partial obstruction of the airway are disclosed. Respiratory air flow from a patient is measured to give an air flow signal. The determination of an apnea is performed by calculating the variance of the air...http://www.google.es/patents/US5704345?utm_source=gb-gplus-sharePatente US5704345 - Detection of apnea and obstruction of the airway in the respiratory system
Detection of apnea and obstruction of the airway in the respiratory system ...
