A study on the form of P wave in predicting the locus of focal atrial tachycardia / 中国实用内科杂志
Chinese Journal of Practical Internal Medicine
;
(12)2000.
Article
in Chinese
| WPRIM
| ID: wpr-553325
ABSTRACT
Objective The aim of our study is to differentiate left atrial from right atrial tachycardia on the basis of P wave configuration during focal atrial tachycardia (AT).Methods Thirty-three patients with focal atrial tachycardia who had undergone successful radiofrequency catheter ablation were considered for inclusion in the study . Site of origin was the left atrium in 10 patients, and right atrium in 23 patients . The surface 12-lead ECG recordings during atrial tachycardia were reviewed in all patients. We analyzed the correlativity between P wave configuration and left atrial tachycardia.Results The specificity of negative P wave in lead I and aVL that indentifed a left atrial focus was 100% and 95% respectively, but the sensitivity was only 30% and 50% respectively. The specificity and sensitivity of positive P wave in V 1 that predicted a left atrial focus was 87% and 80%,respectively.Conclusion It is possible to predict the site of origin of focal atrial tachycardia by analyzing its P wave configuration,,and may be helpful for preparation before ablation.
Full text:
Available
Index:
WPRIM (Western Pacific)
Type of study:
Prognostic study
Language:
Chinese
Journal:
Chinese Journal of Practical Internal Medicine
Year:
2000
Type:
Article
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