A cardiac rhythm disorder detection device includes a memory (10) arranged to receive cardiac electrogram data and to store data defining a first cardiac rhythm disorder detection classification model and a second detection classification template. of cardiac arrhythmias, the first classification model for detecting heart rhythm disorders resulting from the automatic learning processing of data associated with cardiac electrograms having a first duration, and the second classification model for detecting heart rhythm disorders resulting from of the automatic learning processing of data associated with cardiac electrograms having a second duration, the first duration being less than the second duration, a classifier (6) arranged to analyze cardiac electrogram data on the basis of a classification model , and to return a classification value, and a driver (8) arranged to store in the memory (10) input cardiac electrogram data, on the one hand to group these data according to the first duration and to analyze them with the classifier (6) on the basis of the first cardiac rhythm disorder detection classification model and on the other hand to group these data according to the second duration and to analyze them with the classifier (6) on the basis of the second classification model detecting cardiac rhythm disorders, and for returning alert data when the classifier analysis (6) based on the first classification model returns a classification value associated with a cardiac rhythm disorder. Un dispositif de détection de troubles du rythme cardiaque comprend une mémoire (10) agencée pour recevoir des données d'électrogrammes cardiaques et à stocker des données définissant un premier modèle de classification de détection de troubles du rythme cardiaque et un second modèle de classification de détection de troubles du rythme cardiaque, le premier modèle de classification de détection de troubles du rythme cardiaque découlant du traitement par apprentissage automatique
