Abstract
Vectorcardiograms are not usually recorded in clinical practice and must be derived from the conventional 12-lead ECG, for example by making use of Dower's transform. However, its accuracy for the derivation of the P wave is questionable. We tested the accuracy of Dower's transform on the P-wave and compared with a P-wave optimized transform in a database of 123 simultaneous recordings of ECGs and VCGs. This new transform achieved a lower error when we compared derived vs. true measured P-waves (12.2 ± 7.96 μVRMS) than Dower's transform (14.4 ± 9.5 μVRMS) and higher correlation values (Rx=0.93 ± 0.12, Ry= 0.90 ± 0.27, Rz=0.91 ± 0.18 vs. Dower's: Rx=0.88 ± 0.15, Ry=0.91 ± 0.26 , Rz=0.85 ± 0.23). We concluded that derivation of P-waves and QRS complexes VCGs were optimized by the use of different transform matrices for each wave in this database.
Original language | English (US) |
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Title of host publication | 2006 Computers in Cardiology, CIC |
Pages | 249-252 |
Number of pages | 4 |
Volume | 33 |
State | Published - Dec 1 2006 |
Event | 2006 Computers in Cardiology, CIC - Valencia, Spain Duration: Sep 17 2006 → Sep 20 2006 |
Other
Other | 2006 Computers in Cardiology, CIC |
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Country | Spain |
City | Valencia |
Period | 9/17/06 → 9/20/06 |
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
- Software