Patent ID: 9462959
Filing Date: 2016-10-11
CPC Classification: A61B,A61N

Claim Text:
1. A method to monitor left atrial pressure (LAP) of a patient comprising: (a) storing data indicative of an impedance signal for at least a first specified period of time, obtained using implanted electrodes, and a corresponding posture of the patient, as determined using an implanted posture sensor; (b) identifying, based on the stored data, one or more snapshots of the impedance signal where the patient is in a predetermined posture and where prior to each snapshot the patient substantially maintained the predetermined posture for at least a second specified period of time, and during the snapshot the patient maintained the predetermined posture for at least a third specified period of time; (c) calculating, for each of the identified one or more snapshots of the impedance signal, a separate zLAP value indicative of the patient's left atrial pressure (LAP) while the patient is in the predetermined posture; (d) identifying an undesirably abnormal change in the patient's left atrial pressure (LAP) in response to at least one of (e) one or both of triggering an alert or adjusting therapy administered to the patient in response to identifying the abnormality.