Narrow QRS Tachycardia with Spontaneous Switch. What Is the Mechanism?

Nair, KKMNamboodiri, NBanavalikar, BInamdar, SValaparambil, AThajudeen, ATharakan, J2017-03-102017-03-10201639 ,7;768-77010.1111/pace.12874https://dspace.sctimst.ac.in/handle/123456789/10110Cardiovascular System & Cardiology; EngineeringNarrow QRS Tachycardia with Spontaneous Switch. What Is the Mechanism?