Patent ID: 7848792

Claim:
An active implantable medical device for detection of the occurrence of apneae and hypopneae, comprising: means for collecting endocardial acceleration (EA) signals from a patient implanted with the device using an endocardial lead implanted in the patient's heart over at least two heart cycles; means for determining from the endocardial acceleration signals the two endocardial acceleration peak values comprising a first peak value (PEA I) corresponding to the peak-to-peak value of the endocardial acceleration signals during an isovolumetric ventricular contraction phrase and a second peak value (PEA II) corresponding to the peak-to-peak value of the endocardial acceleration signal during the isovolumetric ventricular relaxation phase; means for calculating a long-term average of at least one of the two endocardial acceleration peak values during a first number of cycles of the at least two heart cycles and a short-term average of the at least one of the two endocardial acceleration peak values during a second number of cycles of the at least two heart cycles: means for determining a value as a function of the long-term average and the short-term average of the at least one of the two endocardial acceleration peak values; and means for conditionally delivering an output signal representative of an apnea or a hypopnea alert state of the patient based on the value.