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The value of 12-lead electrocardiography in predictive mechanism of regular narrow qrs complex paroxysmal supraventricular tachycardias
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Abstract
Background: Paroxysmal supraventricular tachycardia (NNKPTT) is the most common clinical occurrence, affecting hemodynamics and causing symptoms of palpitations and dyspnea in patients. Of the mechanisms that cause paroxysmal supraventricular tachycardia, atrioventricular nodal re-entry tachycardia (AVNRT), atrioventricular re-entrant tachycardia (AVRT), and atrial tachycardia (AT) are the most common and difficult to distinguish each other. The electrocardiogram can be used to confirm and diagnose the mechanism of paroxysmal supraventricular tachycardia. [1]
Objectives: to evaluate the predictive ability of the 12-lead electrocardiogram to predict the mechanism of paroxysmal supraventricular tachycardia with regular narrow QRS complex. Methods: cross-sectional descriptive method for 92 patients.
Results: prevalence of paroxysmal supraventricular tachycardia mechanisms in the study was: atrioventricular nodal reentry tachycardia accounted for 69.6%; atrioventricular reentry tachycardia accounted for 27.2%; atrial tachycardia accounted for 3.4%. In univariate regression analysis, the ECG criteria with 95% CI of OR not containing a value of 1 were: clear P' wave, pseudo r' wave in V1, ST-T segment change, electrical alternation , pseudo r wave in aVR. In the multivariable regression model, the independent predictors AVNRT with AVRT are clear P' waves and ST–T segment changes.
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Keywords
Paroxysmal supraventricular tachycardia, electrocardiography, cardiac electro-physiology study, atrioventricular nodal reentrant tachycardia, atrioventricular reentrant tachycardia, atrial tachycardia
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