Enhancements to the detection of pulmonary edema when using transthoracic impedance

摘要: This patent document discusses, among other things, systems, devices, and methods for enhancing detection of pulmonary edema using, in addition to thoracic impedance, one or a combination of: physiologic information about subject, at least statistical parameter, user-programmable level, parameter associated with previous event, patient symptom the subject. In example, (base) impedance threshold is modified an adjusted threshold. The provides increased sensitivity as compared base another alert provided caregiver, user based on indication determined by present methods. further therapy (provided subject) initiated response indication.