Abstract
Amplitude ratios of two adjacent mixed blood oxygen saturation curve peaks in randomly selected strips of ECG were analysed in 32 patients with regular wide-QRS complex tachycardias and 60 control subjects where pacing was performed before ablation of narrow-QRS complex tachycardias. Patients with VT showed different patterns of A-to-V relationships, leading to varying ratios Of SpO(2) adjacent peak amplitudes, in contrast to patients with aberrant SVTs and 1 : 1 AV association. Application of a criterion of adjacent SpO(2) peaks differing by twofold or more had a sensitivity of 90.0% and specificity of 83.3% to detect AV dissociation during VT. Fluctuations on the mixed oxygen saturation curve may be a useful non-invasive clinical parameter to detect different ventricular filling caused by atrio-ventricular dissociation during VT. (c) 2005 Elsevier Ireland Ltd. All rights reserved.
Original language | English |
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Pages (from-to) | 134-135 |
Number of pages | 2 |
Journal | International Journal of Cardiology |
Volume | 107 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Feb 2006 |
Keywords
- atrio-ventricular dissociation
- non-invasive monitoring
- regular wide-QRS complex tachycardias
- mixed blood oxygen saturation