Leadless medical system for quantifying ventricle to ventricle dyssynchrony

A leadless medical device comprising:

• a housing;
• a first electrode secured relative to the housing and exposed to the environment outside of the housing;
• a second electrode secured relative to the housing and exposed to the environment outside of the housing, the second electrode is spaced from the first electrode;
• a pressure sensor secured relative to the housing and is coupled to the environment outside of the housing;
• and
• circuitry in the housing in operatively coupled to the first electrode, the second electrode, and the pressure sensor, the circuitry configured to determine a pressure via the pressure sensor at a plurality of times during a cardiac cycle of a patient to generate a plurality of time/pressure pairs that correspond to the cardiac cycle, the circuitry further configured to wirelessly communicate the plurality of time/pressure pairs to a remote device via the first electrode and the second electrode.

A method, comprising:

• receiving a measure of right ventricle pressure from a first leadless medical device implanted in the right ventricle (RV) of a patient's heart and a measure of left ventricle pressure from a second leadless medical device implanted in the left ventricle (LV) of the patient's heart for each of a plurality of times during a cardiac cycle;
• and
• generating a pressure-pressure loop that is based at least in part on the measure of right ventricle pressure and the measure of left ventricle pressure for each of the plurality of times during the cardiac cycle;
• and
• displaying the pressure-pressure loop on a display and/or altering an operation of the first leadless medical device and/or the second leadless medical device based at least in part on the pressure-pressure loop.