Patent ID: 8043225

Claim:
An active implantable medical device comprising: means for measuring a trans-thoracic impedance, the means for measuring the trans-thoracic impedance delivering an impedance signal varying with respiratory activity of a patient, the impedance signal comprising a cardiac beat, a breathing beat, and a static component, the static component comprising tissue impedance varying with a body position of the patient in the absence of the breathing beat and the cardiac beat; means for processing the impedance signal, the means for processing the impedance signal eliminating the cardiac beat from the impedance signal and delivering a respiratory signal over consecutive respiratory cycles, the respiratory signal comprising the breathing beat and the static component; means for diagnosing a respiratory disorder by analyzing variations of the respiratory signal over the consecutive respiratory cycles; and means for automatically controlling the consecutive respiratory cycles comprising: means for identifying artifacts in the respiratory signal including a jump of the static component of the impedance signal, caused by a change of the body position of the patient, or means for identifying, in at least one respiratory cycle of the consecutive respiratory cycles, a predetermined singularity representative of a respiratory cycle with an artifact including the jump of the static component of the impedance signal.