Cardiac risk stratification
First Claim
Patent Images
1. A method comprising:
- determining, by one or more processors and based on physiological parameters of a patient obtained by an implantable medical device, a first heart rate turbulence (HRT) slope at a first time after an occurrence of a myocardial infarction and a second HRT slope at a second time after the occurrence of the myocardial infarction;
calculating, by the one or more processors, a difference value between the first HRT slope and the second HRT slope; and
determining, by the one or more processors, a level of recovery of autonomic function between the first time and the second time based on the calculated difference.
1 Assignment
0 Petitions
Accused Products
Abstract
This disclosure describes techniques for generating a risk stratification indicator based on HRT measurements computed using physiological parameters sensed by an implantable medical device (IMD). In some examples, the HRT measurements may be computed by the IMD based on the physiological parameters. In other examples, the IMD may sense the physiological parameters, and transmit data representative of the parameters to an external computing device, such as an IMD programmer, which then computes the HRT measurements. Exemplary physiological parameters include cardiac signals.
-
Citations
20 Claims
-
1. A method comprising:
-
determining, by one or more processors and based on physiological parameters of a patient obtained by an implantable medical device, a first heart rate turbulence (HRT) slope at a first time after an occurrence of a myocardial infarction and a second HRT slope at a second time after the occurrence of the myocardial infarction; calculating, by the one or more processors, a difference value between the first HRT slope and the second HRT slope; and determining, by the one or more processors, a level of recovery of autonomic function between the first time and the second time based on the calculated difference. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An implantable medical device (IMD) comprising:
-
a measurement unit configured to obtain physiological parameters for a patient; and a processor configured to; determine, from the physiological parameters, a first heart rate turbulence (HRT) slope at a first time after an occurrence of a myocardial infarction and a second HRT slope at a second time after the occurrence of the myocardial infarction; calculate a difference value between the first HRT slope and the second HRT slope; and determine a level of recovery of autonomic function based on the calculated difference. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A system comprising:
-
an implantable medical device (IMD) configured to obtain physiological parameters for a patient; and an external computing device configured to; receive the physiological parameters; determine, from the physiological parameters, a first heart rate turbulence (HRT) slope at a first time after an occurrence of a myocardial infarction and a second HRT slope at a second time after the occurrence of the myocardial infarction; calculate a difference value between the first HRT slope and the second HRT slope; and determine a level of recovery of autonomic function based on the calculated difference. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification