| CPC A61N 1/3987 (2013.01) [A61B 5/0245 (2013.01); A61B 5/1102 (2013.01); A61B 5/1118 (2013.01); A61B 5/332 (2021.01); A61B 5/352 (2021.01); A61B 5/366 (2021.01); A61B 5/6805 (2013.01); A61B 5/7275 (2013.01); A61B 5/742 (2013.01); A61N 1/3904 (2017.08)] | 22 Claims |
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1. A cardiac monitoring system for monitoring a patient during exercise, the system comprising:
an ambulatory device comprising:
at least one cardiac electrical sensor configured to detect electrocardiogram (ECG) signals of the patient occurring during one or more cardiac cycles;
at least one cardiac mechanical sensor configured to detect signals representative of cardiac motion occurring during the one or more cardiac cycles;
a user interface configured to guide the patient in performing an exercise; and
a network interface configured to transmit the ECG signals and the signals representative of cardiac motion from the ambulatory device to at least one processor of a remote computing device or server, wherein the ambulatory device is configured to prompt the patient via the user interface to begin performing the exercise upon receipt of an instruction from the remote computing device or server, automatically confirm that the patient is performing the exercise based on analysis of the ECG signals detected by the at least one cardiac electrical sensor, and store at least one activity start marker that chronologically marks the start of data collected during the exercise in the detected ECG signals and detected signals representative of cardiac motion; and
the at least one processor in communication with the ambulatory device via the network interface, the at least one processor configured to:
transmit the instruction to the ambulatory device via the network interface causing the user interface to provide the prompt to the patient to begin performing the exercise;
receive from the ambulatory device and process the ECG signals from the at least one cardiac electrical sensor, the signals representative of cardiac motion from the at least one cardiac mechanical sensor, and the at least one activity start marker;
for signals occurring chronologically following the at least one activity start marker, calculate a plurality of cardiac electromechanical time intervals for the one or more cardiac cycles based on a timing of portions of the received ECG signals detected by the at least one cardiac electrical sensor corresponding to a predetermined cardiac motion of the one or more cardiac cycles and correlated portions of the received signals detected by the at least one cardiac mechanical sensor;
analyze the calculated plurality of cardiac electromechanical time intervals and a plurality of previously obtained cardiac electromechanical time intervals for the patient stored in computer memory in communication with the at least one processor to calculate a patient condition indication representative of a slope of a trend line for the calculated plurality of cardiac electromechanical time intervals;
provide at least one notification to a user based on the patient condition indication comprising an indication of an improving heart condition when the slope of the trend line is negative; and
provide at least one notification to the user comprising an alert of a worsening heart condition based on the patient condition indication when the slope of the trend line increases or remains the same over time.
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