Location of Disassociated P Wave in an Electrocardiogram
Abstract
Heart failure was induced in one dog by a blockage of the anterior descending branch of the coronary ostium and in another dog by overdose of digitalis. The electrocardiogram (ECG) from each dog was recorded on an analog magnetic tape. An algorithm to locate and identify the P wave using the periodicity characteristic of the P wave was tested against this data. The P waves in the first two heart beats are identified by their proximity to the R wave. The distance between these wave shapes (P-P interval) is 'stepped' down the ECG. At each 'step' a search is initiated for the peak of the P wave. The accuracy of the algorithm is excellent until an extreme abnormal wave shape, the area of the P wave, is encountered. When this happens, the algorithm may stop identifying P waves. A more thorough knowledge of the relationships between the P wave and other wave shapes needs to be known.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1978
- Accession Number
- ADA069275
Entities
People
- Charles E. Hightower
Organizations
- Air Force Institute of Technology