Lead impedance measurement for physiological and device management

A system comprising:

• memory configured to store a plurality of lead impedances (LeadZs) sensed by a medical device;
• and
• processing circuitry communicatively coupled to the memory, the processing circuitry being configured to:
• determine a first sensed lead impedance (LeadZ);
• determine a second sensed LeadZ;
• determine a first difference between the first sensed LeadZ and the second sensed LeadZ;
• and
• determine a parameter based at least in part on the first difference,
• wherein the first sensed LeadZ and the second sensed LeadZ are sensed in a heart that is receiving pacing.

A non-transitory computer readable medium storing instructions, which when executed by processing circuitry cause the processing circuitry to:

• determine a first sensed lead impedance (LeadZ);
• determine a second sensed LeadZ;
• determine a first difference between the first sensed LeadZ and the second sensed LeadZ;
• and
• determine a parameter based at least in part on the first difference,
• wherein the first sensed LeadZ and the second sensed LeadZ are sensed during a same cardiac cycle or during adjacent cardiac cycles of a heart that is receiving pacing.