A 72-year-old man presents to the Emergency Department with a broad complex tachycardia. Which of the following features would make it more likely that this was due to a supraventricular tachycardia rather than a ventricular tachycardia?
A.A History of ischaemic heart disease
B.A Left axis deviation
C.A Capture beats
D.A Absence of QRS concordance in chest leads***
E.A QRS complex greater than 160 ms.
A.A History of ischaemic heart disease
B.A Left axis deviation
C.A Capture beats
D.A Absence of QRS concordance in chest leads***
E.A QRS complex greater than 160 ms.
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cardiology