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:
Jan. 01, 2013
Filed:
Jan. 25, 2010
David M. Hadley, Woodinville, WA (US);
David M. Hadley, Woodinville, WA (US);
Other;
Abstract
Methods and apparatus for determining a patient specific QT-RR curve. One embodiment of a method in accordance with the technology comprises providing electrophysiological data for a specific patient. The method can further include: (a) determining QT durations and RR values for a plurality of heart beats of the specific patient from the electrophysiological data; (b) ascertaining effective RR intervals for the plurality of heart beats by weight-averaging the RR values according to the equation Effective RR=C×Effective RR+(1−C)×[RR], where C is a number between 0 and 1, and where RRis based on an observed RRvalue and a trend predicted RR value; and (d) finding a value Cdefined by a value of C where a curve fitted to the QT durations and the ascertained effective RR intervals is within a desired standard deviation.