The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 2012
Filed:
Jan. 27, 2009
Jong Gill, Valencia, CA (US);
Peter Boileau, Valencia, CA (US);
Rupinder Bharmi, Canyon Country, CA (US);
Xiaoyi Min, Thousand Oaks, CA (US);
Joseph J. Florio, Bend, OR (US);
Michael E. Benser, Valencia, CA (US);
Gene A. Bornzin, Simi Valley, CA (US);
Jong Gill, Valencia, CA (US);
Peter Boileau, Valencia, CA (US);
Rupinder Bharmi, Canyon Country, CA (US);
Xiaoyi Min, Thousand Oaks, CA (US);
Joseph J. Florio, Bend, OR (US);
Michael E. Benser, Valencia, CA (US);
Gene A. Bornzin, Simi Valley, CA (US);
Pacesetter, Inc., Sylmar, CA (US);
Abstract
Techniques are described for detecting ischemia, hypoglycemia or hyperglycemia based on intracardiac electrogram (IEGM) signals. Ischemia is detected based on a shortening of the interval between the QRS complex and the end of a T-wave (QTmax), alone or in combination with a change in ST segment elevation. Alternatively, ischemia is detected based on a change in ST segment elevation combined with minimal change in the interval between the QRS complex and the end of the T-wave (QTend). Hypoglycemia is detected based on a change in ST segment elevation along with a lengthening of either QTmax or QTend. Hyperglycemia is detected based on a change in ST segment elevation along with minimal change in QTmax and in QTend. By exploiting QTmax and QTend in combination with ST segment elevation, changes in ST segment elevation caused by hypo/hyperglycemia can be properly distinguished from changes caused by ischemia.