US Patent:
20110009712, Jan 13, 2011
Inventors:
Timothy A. Fayram - Gilroy CA, US
Daniell Dokko - Mountain View CA, US
Taraneh Ghaffari Farazi - San Jose CA, US
Mark Carlson - Calabasas CA, US
International Classification:
A61B 5/0295
A61B 5/026
A61B 5/02
Abstract:
Implantable systems, and methods for use therewith, are provided for monitoring for an impending myocardial infarction. A signal indicative of changes in arterial blood volume is obtained. Such a signal can be a photoplethysmography signal or an impedance plethysmography signal. For each of a plurality of periods of time, a metric indicative of the areas under the curve of the signal or number of inflections in the signal is determined. An impending myocardial infarction is monitored for based on changes in the metric indicative of the area under the curve of the signal or number of inflections in the signal, and an alert and/or therapy is triggered in response to an impending myocardial infarction being predicted.