System and method for quantitative analysis of respiratory sinus arrhythmia
US9380948B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 25, 2013 |
| Grant date | Jul 5, 2016 |
| Priority date | — |
| Expiry date | Nov 11, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7253
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A computer-assisted method for quantitative analysis of respiratory sinus arrhythmia (RSA) includes obtaining a time series of a cardiac interval signal from an individual, obtaining a time series of a respiratory signal from the individual; decomposing the cardiac interval signal into a first group of ensemble empirical modes; obtaining, by a computer system, a time series of RSA instantaneous amplitude from at least one of the first group of ensemble empirical modes; decomposing the respiratory signal into a second group of ensemble empirical modes; obtaining a time series of respiratory instantaneous phase from the one of the second group of ensemble empirical modes; determining respiratory period from the time series of the respiratory instantaneous phase; and quantifying RSA in the individual according to a dependence of the RSA instantaneous amplitude on the respiratory period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.