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supraventricular tachycardia (SVT) with aberrancy


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SVT with aberrancy

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supraventricular tachycardia (SVT) with aberrancy

  2. 2. Minor configuration differences consisted of: (i) appearance or disappearanceof a notch; (ii) appearance or disappearance of a Q, Ror S-wave that was <50% of the peak to peak QRS amplitude; (iii)a change <25% but >50% in the ratio of the amplitude of the individual component to the total QRS amplitude Major configuration differences consisted of the following: (i)appearance or disappearance of a component that was >50% of theQRS amplitude; (ii) difference in the amplitude of a component of the QRS complex >50% of the total QRS amplitude; and (iii) two or more minor configuration differences
  3. 3. Other changes that are significant are Change in axis < 45 Increase in QRS duration > 10ms Changes that are less likely and suggestive of ventricular origin are 1. Change in axis > 45 2. Complete appearance of new BBB 3. Decrease in QRS duration