Patent ID: 9566442
Date: 2017-02-14
CPC Classifications: A61B,A61N

Claim:
1. A method for use with an implantable pulmonary artery pressure sensor and an implantable cardiac rhythm management device (CRMD) for implant within a patient, the method comprising: sensing a pulmonary artery pressure (PAP) signal representative of variations in PAP occurring during individual cardiac cycles within the patient; detecting a rate of change of the PAP signal with time (dPAP/dt); detecting a maximum in the dPAP/dt signal (dPAP/dt|max) and a minimum in the dPAP/dt signal (dPAP/dt|min) within a portion of the PAP signal corresponding to an individual cardiac cycle; and examining the dPAP/dt signal within a window between dPAP/dt|max and dPAP/dt|min to detect regurgitation peaks, if present, within the PAP signal; detecting mitral regurgitation (MR) based on the presence of a regurgitation peak in the PAP signal; detecting a pulmonary artery systole (PAS) peak within the PAP signal corresponding to a cardiac cycle; detecting a delay interval between the PAS peak and the regurgitation peak; and adjusting a cardiac pacing parameter based, at least in part, on the delay interval.