Multi-parameter prediction of acute cardiac episodes and attacks

A non-transitory computer-readable storage medium comprising program instructions that, when executed by processing circuitry, cause the processing circuitry to:

• periodically determine a respective value for each of a plurality of physiological parameters based on one or more of heart sounds or an electrocardiogram (ECG) sensed by an insertable cardiac monitor (ICM), wherein the ICM comprises:
• a housing configured for subcutaneous implantation within a patient, the housing having a length, a width, and a depth,
• wherein the length is greater than the width and the width is greater than the depth, and
• wherein the length is within a range from 40 millimeters (mm) to 60 mm;
• a heart sound sensor, wherein the ICM is configured to sense the heart sounds via the heart sound sensor;
• and
• a plurality of electrodes, wherein the ICM is configured to sense the ECG via the plurality of electrodes;
• output trends of the periodically determined values of the physiological parameters at a remote computing device;
• and
• determine whether to present an indication of a cardiac event based on an analysis of the trends of the periodically determined values of the physiological parameters.

An insertable cardiac monitor (ICM) comprising:

• a housing configured for subcutaneous implantation within a patient, the housing having a length, a width, and a depth,
• wherein the length is greater than the width and the width is greater than the depth,
• wherein the length is within a range from 40 millimeters (mm) to 60 mm;
• a heart sound sensor, wherein the ICM is configured to sense heart sounds of the patient via the heart sounds sensor;
• a plurality of electrodes, wherein the ICM is configured to sense an electrocardiogram (ECG) of the patient via the plurality of electrodes;
• and
• communication circuitry within the housing;
• and
• processing circuitry within the housing, the processing circuitry configured to:
• cause the communication circuitry to establish one or more telemetry communication sessions with a remote computing device;
• and
• cause the communication circuitry to, during the one or more telemetry communication sessions, communicate values of a plurality of physiological parameters periodically determined based at least in part on one or more of the heart sounds or the ECG to the remote computing device that is configured to output trends of the periodically determined values of the physiological parameters and is further configured to determine whether to present an indication of a cardiac event based on an analysis of the trends of the periodically determined values of the physiological parameters.

A system comprising:

• an insertable cardiac monitor (ICM) comprising:
• a housing configured for subcutaneous implantation within a patient, the housing having a length, a width, and a depth,
• wherein the length is greater than the width and the width is greater than the depth, and
• wherein the length is within a range from 40 millimeters (mm) to 60 mm;
• a heart sound sensor, wherein the ICM is configured to sense heart sounds of the patient via the heart sound sensor;
• and
• a plurality of electrodes, wherein the ICM is configured to sense an electrocardiogram (ECG) of the patient via the plurality of electrodes;
• means for periodically determining a respective value for each of a plurality of physiological parameters based on one or more of the heart sounds or the ECG;
• means for outputting trends of the periodically determined values of the physiological parameters at the remote computing device;
• and
• means for determining whether to present an indication of a cardiac event based on an analysis of the trends of the periodically determined values of the physiological parameters.