Managing cardiac risk based on physiological markers
In one embodiment, a method to track the cardiac health of a patient is described. The method includes connecting to at least one motion sensor configured to sense movement of a patient and receiving motion data from the at least one motion sensor. The method further includes monitoring an activity level of the patient based at least in part on the motion data and detecting a change in the activity level of the patient based at least in part on the motion data. The method also includes altering a monitoring status of the cardiac health of the patient for a predetermined period of monitoring time based at least in part on the change in activity level.
1 . A method to track cardiac health of a patient, the method comprising:
receiving, by a processor, motion data from at least one motion sensor configured to sense movement of the patient;
monitoring, by the processor, an activity level of the patient based at least in part on the motion data;
detecting, by the processor, a decrease in the activity level of the patient based at least in part on the motion data, wherein the decrease in the activity level is detected upon comparing the activity level to a baseline activity level;
in response to detecting the decrease in the activity level, increasing, by the processor, a frequency that monitoring status information corresponding to the monitored activity level is received from a cardiac monitor, wherein the monitoring status information includes at least one cardiac measurement of the patient;
detecting, by the processor, a number of premature ventricular contractions in the monitoring status information upon increasing the frequency of the monitoring status information;
comparing, by the processor, the number of premature ventricular contractions to a threshold number of premature ventricular contractions; and
in response to detecting the decrease in the activity level and a determination that the number of premature ventricular contractions meets or exceeds the threshold number of premature ventricular contractions, decreasing, by the processor, a threshold for issuing an alert indicating a cardiac anomaly.
2 . The method of claim 1 , further comprising:
projecting, by the processor, a trend of typical activity level for the patient based at least in part on the monitored activity level.
3 . The method of claim 2 , wherein the decrease comprises a decrease in the activity level from the trend of the typical activity level of the patient.
4 . The method of claim 1 , wherein the decrease is observed over a predetermined period of monitoring.
5 . The method of claim 1 , wherein the cardiac monitor comprises a remote device.
6 . The method of claim 5 , wherein the frequency that the monitoring status information is received from the cardiac monitor is between one minute and twenty-four hours.
7 . The method of claim 1 , wherein:
the cardiac anomaly is ventricular tachycardia (VT), and
the threshold comprises a time duration of detection of the VT.
8 . The method of claim 7 , wherein the time duration is less than fifteen seconds.
9 . The method of claim 1 , further comprising:
resetting the frequency after a period of time between one week and three weeks.
10 . The method of claim 1 , further comprises:
issuing, by the processor, the alert indicating the number of premature ventricular contractions detected.
11 . The method of claim 1 , further comprising determining analyzing a heart rate associated with the at least one cardiac measurement of the patient for a shockable rhythm.
12 . A system for monitoring health of a patient wearing the system, the system comprising:
a cardiac monitor; and
one or more processors configured to be in communication with the cardiac monitor, wherein the one or more processors are collectively configured to:
receive motion data from at least one motion sensor configured to sense movement of the patient,
monitor an activity level of the patient based at least in part on the motion data,
detect a decrease in the activity level of the patient based at least in part on the motion data, wherein the decrease in the activity level is detected upon comparison of the activity level to a baseline activity level,
in response to the detection of the decrease in the activity level, increase a frequency that monitoring status information corresponding to the monitored activity level is received from the cardiac monitor, wherein the monitoring status information includes at least one cardiac measurement of the patient,
detect a number of premature ventricular contractions in the monitoring status information upon increasing the frequency of the monitoring status information,
compare the number of premature ventricular contractions to a threshold number of premature ventricular contractions; and
in response to the detection of the decrease in the activity level and a determination that the number of premature ventricular contractions meets or exceeds the threshold number of premature ventricular contractions, decrease a threshold for issuing an alert indicating a cardiac anomaly.
13 . The system of claim 12 , wherein the one or more processors are further collectively configured to:
project a trend of typical activity level for the patient based at least in part on the activity level monitored.
14 . The system of claim 13 , wherein the decrease comprises a decrease in the activity level from the trend of the typical activity level of the patient.
15 . The system of claim 12 , wherein the decrease is observed over a predetermined period of monitoring time.
16 . The system of claim 12 , wherein the one or more processors are further collectively configured to:
transmit the monitoring status information to a remote device.
17 . The system of claim 16 , wherein the frequency that the monitoring status information is received from the cardiac monitor is between one minute and twenty-four hours.
18 . The system of claim 12 , wherein the one or more processors are further collectively configured to:
reset the frequency after a period of time between one week and three weeks.
19 . The system of claim 12 , wherein the one or more processors are further collectively configured to:
issue the alert indicating the number of premature ventricular contractions detected combined with the decrease in the activity level of the patient.
20 . A system for monitoring health of a patient wearing the system, the system comprising:
a cardiac monitor;
one or more displays proximate the cardiac monitor; and
one or more processors configured to be in communication with the cardiac monitor, the one or more processors are collectively configured to:
receive motion data from at least one motion sensor configured to sense movement of the patient,
monitor an activity level of the patient based at least in part on the motion data,
project a trend of typical activity level for the patient based at least in part on the monitored activity level,
detect a decrease in the activity level of the patient based at least in part on the motion data and trend data, wherein the decrease in the activity level is detected upon comparison of the activity level and the trend data to a baseline activity level,
in response to the detection of the decrease in the activity level, increase a frequency that monitoring status information corresponding to the monitored activity level is received from the cardiac monitor, wherein the monitoring status information includes at least one cardiac measurement of the patient,
detect a number of premature ventricular contractions in the monitoring status information upon increasing the frequency of the monitoring status information,
compare the number of premature ventricular contractions to a threshold number of premature ventricular contractions; and
in response to the detection of the decrease in the activity level and a determination that the number of premature ventricular contractions meets or exceeds the threshold number of premature ventricular contractions, decrease a threshold for issuing an alert indicating a cardiac anomaly.
21 . The system of claim 12 , wherein the one or more processors further analyze a heart rate associated with the at least one cardiac measurement of the patient for a shockable rhythm.