An algorithmic approach to the ECG differentiation of narrow QRS tachycardias

In contrast to some previously published approaches this one asks the clinician to choose among three algorithms, depending on how much information is available. The algorithms lead the clinician through the same diagnostic steps that the ordinary logical and common sense thought process of a reasonably experienced clinician would take, but provide them in a more systematic form and in a series of binary decision points which may add clarity in difficult presentations.