Analysis of delta wave pattern on the ECG can give clues as to the location of a given accessory pathway. Such analysis can be done without algorithms if you read the ECG in a logical sequence.
Bundle branch block during orthodromic reciprocating AV reentry tachycardia (AVRT) helps to determine the side of the accessory pathway
Pre-excitation index is a useful measurement to confirm the presence of an accessory pathway mediated tachycardia and identify the side of the accessory pathway
In this section we will look at some real life tachycardia circuits and see how the principles of entrainment and the criteria can be applied.
In this section we will look at concepts behind the so-called entrainment criteria
In this section we will see the importance of continuous pacing for entrainment
Two simple constructs based on limb leads and precordial leads make ECG analysis a breeze !
Source-load (or source-sink) concept provides a construct which helps to understand arrhythmia propagation
This is a very elegant technique to detect the presence of an accessory pathway during narrow complex tachycardia.
Re-entry is the most fun mechanism that we can manipulate to understand and treat an arrhythmia