Measuring autonomic tone using atrioventricular delay

摘要

An autonomic status indicator representative of a sympathetic/parasympathetic balance of a subject can use atrioventricular (AV) delays measured during recovery from (or in response to) elevated atrial pacing while the subject is at rest.

主权项

1. A system comprising:
a cardiac rhythm management device, the cardiac rhythm management device comprising:
an atrial pacing circuit, configured to provide, during a testing time period, atrial pacing to a subject at rest, over a specified range of atrial pacing rates or intervals; andan intrinsic AV delay measurement circuit, configured to:
measure, during the testing time period, testing intrinsic AV delays of the subject, over the specified range of the atrial pacing rates or intervals; and a processor, included in or coupled to the cardiac rhythm management device, the processor configured to use information about a relationship between the testing intrinsic AV delays and the atrial pacing rates or intervals, to determine a first autonomic status indicator representative of a sympathetic/parasympathetic balance of the subject.