title: Nonlinear algorithm for identification of a fiducial marker for various cardiac events.
abstract: We report on a nonlinear algorithm which identifies R-wave peaks on the surface electrocardiogram, consistent reference points on the left ventricular pressure waveform and the initiation of the QRS complex on the epicardial electrogram. The algorithm has been used to evaluate data from horses, ponies, dogs and humans at rest and during exercise. It permits rapid, accurate evaluation of data on a beat-by-beat basis even with noisy signals and varying waveform configurations. The algorithm facilitates the acquisition of detailed information previously difficult or impossible to obtain by more conventional methods of analysis.
authors.affiliation: John M. Dalton Research Center, University of Missouri, Columbia 65211.
authors.forename: B
authors.initials: B
authors.lastname: Jiang
authors.forename: K S
authors.initials: KS
authors.lastname: Rugh
authors.forename: D G
authors.initials: DG
authors.lastname: Hatfield
authors.forename: D
authors.initials: D
authors.lastname: Jiang
authors.forename: A W
authors.initials: AW
authors.lastname: Hahn
mesh_terms: D000465:Algorithms; D000818:Animals; D004285:Dogs; D004562:Electrocardiography / Q000379:methods*; D015444:Exercise / Q000502:physiology; D006339:Heart Rate / Q000502:physiology; D006736:Horses; D006801:Humans; D008838:Microcomputers; D008991:Monitoring, Physiologic / Q000379:methods; D005082:Physical Exertion / Q000502:physiology; D011312:Pressure; D012815:Signal Processing, Computer-Assisted; D016276:Ventricular Function