Diagnostic Value of Electrocardiographic T Wave Inversion in Lead aVL in Diagnosing Coronary Artery Disease in Patients with Chronic Stable Angina
Diagnostic Value of Electrocardiographic T Wave Inversion in Lead aVL in Diagnosing Coronary Artery Disease in Patients with Chronic Stable Angina
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Objectives: The clinical value of T wave inversion in lead aVL in diagnosing coronary artery disease (CAD) remains unclear.This study aims lcpl chevrons to investigate the correlation between aVL T wave inversion and CAD in patients with chronic stable angina.Methods: Electrocardiograms (ECGs) of 257 consecutive patients undergoing coronary angiography were analyzed.All patients had chronic stable angina.All patients with secondary T wave inversion had been excluded (66 patients).
The remaining 191 patients constituted the study population.Detailed ECG interpretation and coronary angiographic findings were conducted by experienced cardiologists.Results: T wave inversion in aVL was identified in 89 ECGs (46.8%) with definite ischemic Q-ST-T changes in different leads in 97 ECGs (50.8%).
Stand alone aVL T wave inversion was found in 27 ECGs (14.1%) while ischemic changes in other leads with normal aVL were identified in 36 ECGs (18.8%).The incidence of CAD was 86.3%.
Single, two- and multi-vessel CAD were found in 38.8%, 28.5% and 32.7% of cases respectively.The prevalence of left main, left anterior descending, left circumflex and right coronary arteries were 4.
7%, 61.2%, 29.3% and 44.5%, respectively.T wave inversion in aVL was found to be the only ECG variable significantly predicting mid segment left anterior descending artery (LAD) lesions (Odds Ratio 2.
93, 95% Confidence Interval 1.59-5.37, p=0.001).Conclusion: This study provides new information relating to T wave inversion in lead aVL to mid segment LAD lesions.
Implication of this simple alternator for a 2010 ford fusion finding may help in bedside diagnosis of CAD typically mid LAD lesions.However, further studies are needed to corroborate this finding.