Method for estimating cardiac pressure using parameters derived from impedance signals detected by an implantable medical device
First Claim
1. A method for estimating cardiac pressure within a patient using an implantable medical device, the method comprising:
- measuring an electrical parameter across the thoracic cavity of a patient, the electrical parameter being associated with cardiac tissues of the patient, wherein the electrical parameter is indicative of cardiac pressure;
estimating cardiac pressure within the patient by applying predetermined conversion factors to the measured electrical parameter; and
signaling a user to calibrate an implanted pressure sensor based upon the estimated cardiac pressure.
0 Assignments
0 Petitions
Accused Products
Abstract
A method of monitoring pressure within a medical patient, includes measuring an actual pressure in a medical patient in a first time period; measuring an indicator of the actual pressure in the first time period, wherein the indicator is derived from an electrical signal of the patient'"'"'s heart; determining a correlative relationship between the actual pressure and the indicator, wherein both the actual pressure and the indicator are obtained in the first time period; measuring the indicator in a second time period; and determining the actual pressure in the second time period based on the correlative relationship obtained in the first time period and the indicator obtained in the second time period.
-
Citations
17 Claims
-
1. A method for estimating cardiac pressure within a patient using an implantable medical device, the method comprising:
-
measuring an electrical parameter across the thoracic cavity of a patient, the electrical parameter being associated with cardiac tissues of the patient, wherein the electrical parameter is indicative of cardiac pressure; estimating cardiac pressure within the patient by applying predetermined conversion factors to the measured electrical parameter; and signaling a user to calibrate an implanted pressure sensor based upon the estimated cardiac pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
Specification