Why Does the QRS Morphology Change?

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Why Does the QRS Morphology Change?

Question






Questions answered incorrectly will be highlighted.

Note that especially in the V1 rhythm strip in the middle of the tracing, the QRS complexes are wider than and different from those at the beginning or in the latter part. What is happening? Choose one of the following:

Ventricular tachycardia (VT) in the midst of supraventricular tachycardia (SVT)

Aberrant conduction during SVT




Source...
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