Abstract: An implantable medical device and associated methods monitor thoracic fluid status and discriminate thoracic fluid conditions. Intrathoracic impedance is measured along multiple intrathoracic measurement vectors using implanted electrodes. A map of thoracic conductivity is computed using the measured intrathoracic impedances. A thoracic fluid condition is detected in response to the computed map.

Abstract: A system and method for deliverying an ablation therapy that includes delivering the ablation therapy, delivering drive signals to establish a drive signal vector fields, determining impedance signals in response to the drive signals, determining a first impedance parameter in response to the first impedance signal and a second impedance parameter in response to the second impedance signal, determining whether there is a change in a hemodynamic status of the tissue subsequent to delivery of the ablation therapy in response to the first impedance parameter and the second impedance parameter, and adjusting delivery of the ablation therapy in response to determining whether there is a change in a hemodynamic status of the tissue.

Abstract: An implantable medical device and associated methods monitor thoracic fluid status and discriminate thoracic fluid conditions. Intrathoracic impedance is measured along multiple intrathoracic measurement vectors using implanted electrodes. A map of thoracic conductivity is computed using the measured intrathoracic impedances. A thoracic fluid condition is detected in response to the computed map.