Monitoring Cardiovascular Health Using Sensor Data

A wearable computing device, comprising:

• a housing having an upper side and a lower side, the lower side facing skin of a user when the wearable computing device is worn by the user;
• an impedance plethysmography (IPG) sensor positioned at the lower side of the housing, the IPG sensor having a pair of excitation electrodes and a pair of sensing electrodes configured to contact the skin of the user, the IPG sensor being configured to generate IPG data indicative of a voltage passed between the pair of sensing electrodes due to current applied at the pair of excitation electrodes;
• a photoplethysmography (PPG) sensor positioned at the lower side of the housing and proximate the IPG sensor, the PPG sensor including an emitter configured to emit light and a detector configured to detect the light emitted from the emitter, the PPG sensor being configured to generate PPG data indicative of an amount of light detected by the detector;
• and
• a computing system configured to:
• receive the IPG data;
• receive the PPG data;
• and
• determine a cardiovascular response based at least in part on a comparison of the IPG data and the PPG data.

A method for monitoring cardiovascular health, the method comprising:

• receiving, with a computing device, impedance plethysmography (IPG) data generated by an IPG sensor positioned at a lower side of a housing of a wearable computing device, the lower side of the housing facing skin of a user when the wearable computing device is worn by the user, the IPG sensor having a pair of excitation electrodes and a pair of sensing electrodes configured to contact the skin of the user, the IPG sensor being configured to generate IPG data indicative of a voltage passed between the pair of sensing electrodes due to current applied at the pair of excitation electrodes;
• receiving, with the computing device, photoplethysmography (PPG) data generated by a PPG sensor positioned at the lower side of the housing and proximate the IPG sensor, the PPG sensor including an emitter configured to emit light and a detector configured to detect the light emitted from the emitter, the PPG data being indicative of an amount of light detected by the detector;
• determining, with the computing device, a myogenic response based at least in part on a comparison of the PPG data and the IPG data;
• and
• controlling, with the computing device, a user interface based at least in part on the myogenic response.