Method and system for assaying agitation

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20060058590A1
SERIAL NO

10925395

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A method of physiologically quantifying patient agitation presented is based on reliable, objective physiological signals. The present invention is capable of quantifying autonomic nervous system interactions to provide an objective measurement of agitation. Adaptive autoregressive (AR) signal processing techniques are used to analyze heart rate (HRV) and blood pressure (BPV) variability and are combined with a fuzzy quantifier to measure agitation levels. Results show that agitation in normal subjects can be assessed and quantified using this approach, including differentiating periods of calm. Additionally, it has been shown that detected periods of agitation in ICU patients correlate well with subjective assessment by trained medical staff using the modified Riker SAS and with the objective assaying of patient motion. These results show that agitation can be quantitatively measured and assessed using common biomedical signals. Finally, agitation induced in normal subjects correlates well to agitation in ICU patients, as both show similar changes in the measured biomedical signals during agitated periods.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
CANTERPRISE LIMITEDPRIVATE BAG 4800 UNIVERSITY OF CANTERBURY CHRISTCHURCH

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chase, James Geoffrey Christchurch, NZ 14 229
Shaw, Geoffrey M Christchurch, NZ 2 39

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation