Active medical device able to diagnose a patient respiratory profile

An active medical device of the pacemaker, defibrillator, cardiovertor and/or multisite device type, comprising:

• means for measuring respiratory activity and providing a signal representative of the periodicity and amplitude of the successive respiratory cycles of a patient,
• discriminating means for analyizing the signal, discriminating between various types of respiratory profiles, and diagnosing a Cheyne-Stokes type respiratory profile,
• said discriminating means comprising:
• means for detecting in said signal an alternation of a hyperventilation respiratory cycle separated by one of a respiratory pause period, a hypoventilation period, and a normal ventilation period, and
• second discriminating means, responsive to a detected alternation of a hyperventilation and a normal ventilation, for discriminating between a respiratory pause period and a hypoventilation period or a normal ventilation period by analysis of variation with second order of said signal, said second discriminating means further comprising means for analyzing the variation of second order of signal by identifying a peak value of said signal and an interval between successive peak values.