Blood oxygen saturation during atrio-ventricular dissociation with wide-QRS complex tachycardias.
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 SpO2 adjacent peak amplitudes, in contrast to patients with aberrant SVTs and 1:1 AV association. Application of a criterion of adjacent SpO2 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.
Marinskis
Germanas
G
Lip
Gregory Y H
GY
Aidietis
Audrius
A
Adietis
Audrius
A
Jurkuvenas
Paulius
P
Kaireviciūte
Diana
D
Jezov
Vladimir
V
Bagdonas
Kestutis
K
Serpytis
Pranas
P
Laucevicius
Aleksandras
A
D016022:Case-Control Studies; D004562:Electrocardiography; D005260:Female; D006325:Heart Atria / Q000503:physiopathology; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010092:Oximetry; D010100:Oxygen / Q000097:blood*; D011659:Pulmonary Gas Exchange; D013617:Tachycardia, Supraventricular / Q000097:blood* / Q000503:physiopathology
D010100:Oxygen