| 摘要 |
An apparatus for detecting partial obstruction of the airway of a patient, the apparatus comprising:
(a) measurement means for deriving a patient respiratory air flow signal; and
(b) processing means coupled to said measurement means for operating on said air flow signal by:
(i) sampling said airflow signal at multiple times during a breath;
(ii) identifying those of the samples that are inspiratory samples; and
(iii) determining a measure of partial obstruction as a root mean square deviation function of a mid-portion of the inspiratory samples. |
