Computer Identification of P Waves in Electrocardiograms.
Abstract
Algorithms to locate and identify the P wave in single lead electrocardiograms (ECG's) are developed and evaluated on eighteen 12 second electrocardiogram recordings. The program does not assume that the P wave has any specific time relationship to the occurrence of the QRS complex. The program searches the entire ECG to locate the P wave in any part of the ECG. The program divides the ECG into sections and classifies the sections as P waves or some other wave. The first test selects the sections that have a frequency domain pattern that is similar to a training set P wave. The sections that pass this test are checked for a periodic relationship with past selected sections. If a section was selected at a time assumed to be one P wave period before the present one, the present one will be classified as a P wave. Of the 209 P waves in the ECG records, 123 or 58.85% were located correctly. There were 83 false classifications of sections which were not P waves. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1977
- Accession Number
- ADA056532
Entities
People
- Charles A. Flick
Organizations
- Air Force Institute of Technology