System and method for generating an adjusted fluid responsiveness metric
US9763585B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2014 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Feb 15, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/14551
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to physiological signal processing, and in particular to methods and systems for processing physiological signals to predict a fluid responsiveness of a patient. A medical monitor for monitoring a patient includes an input receiving a photoplethysmograph (PPG) signal representing light absorption by a patient's tissue. The monitor also includes a perfusion status indicator indicating a perfusion status of the PPG signal, and a fluid responsiveness predictor (FRP) calculator programmed to calculate an FRP value based on a respiratory variation of the PPG signal. The FRP calculator applies a correction factor based on the perfusion status indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.