Patent ID: 8483818
Filing Date: 2013-07-09
Classification: A61B

Abstract:
1. A system comprising: an implantable thoracic impedance measurement circuit configured to sense a thoracic impedance signal from a subject; a parameter collection device configured to sense or receive physiologic information about the subject, the physiologic information including heart wall motion, the parameter collection device including a heart wall dyssynchrony measurement device, wherein the heart wall dyssynchrony measurement device is configured to sense a first heart wall motion signal from a first cardiac site and a second heart wall motion signal from a second cardiac site, and wherein the parameter collection device is configured to provide a heart wall dyssynchrony signal indicative of the heart wall motion from a phase difference between the first heart wall motion signal and the second heart wall motion signal; and a pulmonary edema indicator coupled with the thoracic impedance measurement circuit to accept the thoracic impedance signal and coupled with the parameter collection device to accept the heart wall dyssynchrony signal, wherein the pulmonary edema indicator is configured to provide a pulmonary edema indication using the thoracic impedance signal and the heart wall dyssynchrony signal.