Systems and methods for estimating left atrial pressure (LAP) in patients with acute mitral valve regurgitation for use by an implantable medical device
US8135468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2010 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Nov 25, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/37258
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Various techniques are provided for use with an implantable medical device for estimating cardiac pressure within a patient based on admittance (or related electrical values such as impedance or conductance) that takes into account the presence of acute MR within the patient. Briefly, the device detects an indication of acute MR, if occurring within the patient. The device also applies electrical fields to tissues of the patient and measures electrical parameters influenced by the electrical field, such as admittance, impedance or conductance. The device then estimates cardiac pressure within the patient based on the measured electrical parameter and the indication of acute MR. In one example, different linear correlation functions are used to convert admittance values to left atrial pressure (LAP) values depending upon the presence or absence of acute MR within the patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.