ISSN: 1859 - 2872
The role of surface ECG morphology to predict the location of the right ventricular outflow tract premature ventricular complex
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Abstract
Objective: The role of surface ECG morphology to predict the location of RVOT-PVC. Subject and method: A cross-sectional study was carried out on 100 patients with idiopathic RVOT-PVC. Surface ECG were collected and each wave component of QRS was analyzed according to Minesota criteria. Electrophysiology and ablation was done to confirm the location of PVC, ECG morphology was characterized to be associated with PVC location. Result: The QRS of PVC at posterior wall was shown to be wider as compared to that at anterior wall. With cut off of 0.26mV, R wave at DI has high accuracy to predict PVC origination (anterior wall vs posterior wall). R wave amplitude of QRS at III, AVF was seen higher from PVC at superior part as compared to the inferior part. With cut off of 1.21mV, R wave at AVF has good value to predict PVC location originated from superior part of RVOT. Conclusion: Surface ECG morphology has a good value to predict the location of PVC.
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References
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