A cardiac rhythm management system acquires atrial heart rate variability
data. The system provides a graphic or other indication of patient
well-being based on the atrial heart rate variability data. Such atrial
heart rate variability information provides an indication of the autonomic
balance between the sympathetic and parasympathetic/vagal components of
the autonomic nervous system. One example of the system also provides
time-domain processing of frequency components of the atrial heart rate
interval signal to obtain the indication of patient well-being.
