Decongestive therapy titration for heart failure patients using implantable sensor
First Claim
1. A system for assessing decongestive therapy delivered to a heart failure patient, comprising:
- an implantable sensor configured to sense a physiologic parameter indicative of the patient'"'"'s diuresis status responsive to delivery of a decongestive therapy; and
a processor coupled to the implantable sensor, the processor configured to determine if the patient is being subject to over-therapeuting when a target level of patient diuresis has been achieved based on a relationship between the sensed physiologic parameter and a threshold developed for the patient, produce a first output in response to determining that the target level of patient diuresis has been achieved, and produce a second output in response to determining that the patient is being subject to over-therapeuting, wherein the second output comprises an alert indicating detection of over-diuresis of the patient, wherein the relationship is based on a rate of change of the sensed physiologic parameter relative to the threshold.
1 Assignment
0 Petitions
Accused Products
Abstract
Assessing decongestive therapy delivered to a heart failure patient involves use of an implantable sensor configured to sense a physiologic parameter indicative of the patient'"'"'s diuresis status and a processor coupled to the implantable sensor. The sensor may comprise a thoracic fluid sensor, a heart sounds sensor, a cardiac chamber or arterial pressure sensor, a respiration sensor, or a blood chemistry sensor, for example. The processor is configured to determine if a target level of patient diuresis has been achieved based on a relationship between the sensed physiologic parameter and a threshold developed for the patient, and to produce an output in response to determining that the target level of patient diuresis has been achieved. The processor may be disposed in an implantable housing, in a patient-external housing, or in a network server system.
74 Citations
11 Claims
-
1. A system for assessing decongestive therapy delivered to a heart failure patient, comprising:
-
an implantable sensor configured to sense a physiologic parameter indicative of the patient'"'"'s diuresis status responsive to delivery of a decongestive therapy; and a processor coupled to the implantable sensor, the processor configured to determine if the patient is being subject to over-therapeuting when a target level of patient diuresis has been achieved based on a relationship between the sensed physiologic parameter and a threshold developed for the patient, produce a first output in response to determining that the target level of patient diuresis has been achieved, and produce a second output in response to determining that the patient is being subject to over-therapeuting, wherein the second output comprises an alert indicating detection of over-diuresis of the patient, wherein the relationship is based on a rate of change of the sensed physiologic parameter relative to the threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A system for assessing decongestive therapy delivered to a heart failure patient, comprising:
-
an implantable sensor configured to sense a physiologic parameter indicative of the patient'"'"'s diuresis status responsive to delivery of a decongestive therapy; and a processor coupled to the implantable sensor, the processor configured to determine if the patient is being subject to over-therapeuting when a target level of patient diuresis has been achieved based on a relationship between the sensed physiologic parameter and a threshold developed for the patient, produce a first output in response to determining that the target level of patient diuresis has been achieved, and produce a second output in response to determining that the patient is being subject to over-therapeuting, wherein the second output comprises an alert indicating detection of over-diuresis of the patient, wherein the relationship is based on a rate of change of the sensed physiologic parameter relative to the threshold, and wherein the therapy comprises at least one of a drug therapy, a neurostimulation therapy, and a cardiac electrical stimulation therapy.
-
-
11. A system for assessing decongestive therapy delivered to a heart failure patient, comprising:
-
an implantable sensor configured to sense a physiologic parameter indicative of the patient'"'"'s diuresis status responsive to delivery of a decongestive therapy; and a processor coupled to the implantable sensor, the processor configured to determine if the patient is being subject to over-therapeuting when a target level of patient diuresis has been achieved based on a relationship between the sensed physiologic parameter and a threshold developed for the patient, produce a first output in response to determining that the target level of patient diuresis has been achieved, and produce a second output in response to determining that the patient is being subject to over-therapeuting, wherein the second output comprises an alert indicating detection of over-diuresis of the patient, wherein the relationship is based on a rate of change of the sensed physiologic parameter relative to the threshold, and wherein the threshold is a threshold developed specifically for the patient.
-
Specification