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Ventricular Tachycardia: Difference between revisions
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→Localisation of the origin of a ventricular tachycardia
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The steps to finding the exit site are: | The steps to finding the exit site are: | ||
# What is the bundle branch block (BBB) configuration? | # What is the bundle branch block (BBB) configuration? | ||
# What is the inferior lead QRS complex polarity | # What is the inferior lead QRS complex polarity? | ||
# What is the lead I QRS complex polarity | # What is the lead I QRS complex polarity? | ||
# What is the lead aVL QRS complex polarity | # What is the lead aVL QRS complex polarity? | ||
# What is the lead aVR QRS complex polarity | # What is the lead aVR QRS complex polarity? | ||
# Where is the R-wave transition point | # Where is the R-wave transition point? | ||
Using this approach and the algorithm on the right <cite>segal</cite> the exit site can be estimated with reasonable accuracy (PPV around 70%). | Using this approach and the algorithm on the right <cite>segal</cite> the exit site can be estimated with reasonable accuracy (PPV around 70%). | ||