Cardiopulmonary functional status assessment via heart rate response dectection by implantable cardiac device
First Claim
Patent Images
1. A cardiac device, comprising:
- one or more sensing channels for generating intra-cardiac electrogram signals;
a controller for detecting intrinsic cardiac activity and measuring an intrinsic heart rate from the electrogram signals;
an activity level sensor interfaced to the controller for measuring a parameter related to a patient'"'"'s level of physical activity; and
, wherein the controller is programmed to monitor a patient'"'"'s cardiopulmonary functional status by constructing a historical record of activity level versus heart rate, referred to as a heart rate response profile.
1 Assignment
0 Petitions
Accused Products
Abstract
An implantable cardiac device is configured and programmed to assess a patient'"'"'s cardiopulmonary function by evaluating the patient'"'"'s heart rate response. Such evaluation may be performed by computing a heart rate response slope, defined as the ratio of an incremental change in intrinsic heart rate to an incremental change in measured activity level. The heart rate response slope may then be compared with a normal range to assess the patient'"'"'s functional status.
-
Citations
22 Claims
-
1. A cardiac device, comprising:
-
one or more sensing channels for generating intra-cardiac electrogram signals;
a controller for detecting intrinsic cardiac activity and measuring an intrinsic heart rate from the electrogram signals;
an activity level sensor interfaced to the controller for measuring a parameter related to a patient'"'"'s level of physical activity; and
,wherein the controller is programmed to monitor a patient'"'"'s cardiopulmonary functional status by constructing a historical record of activity level versus heart rate, referred to as a heart rate response profile. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 21)
-
-
11. A method for operating a cardiac device, comprising:
-
generating intra-cardiac electrogram signals and measuring an intrinsic heart rate from the electrogram signals;
measuring a parameter related to a patient'"'"'s level of physical activity; and
,monitoring a patient'"'"'s cardiopulmonary functional status by constructing a historical record of activity level versus heart rate, referred to as a heart rate response profile. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 22)
-
Specification