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Intraventricular Conduction: Difference between revisions
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== LBBB vs RBBB == | == LBBB vs RBBB == | ||
[[Image:LBTB_RBTB_en.png|thumb| A bundle branch block causes a delay in the depolarization of the right (RBBB) or left (LBBB) ventricle. In RBBB the QRS complex shows a second peak or R' in V1.]] | [[Image:LBTB_RBTB_en.png|thumb| A bundle branch block causes a delay in the depolarization of the right (RBBB) or left (LBBB) ventricle. In RBBB the QRS complex shows a second peak or R' in V1.]] | ||
Check V1 when QRS > 0 | Check V1 when QRS > 0.12 sec. | ||
When the "terminal force" of the QRS in V1 is below the baseline (i.e. QS wave), a LBBB is the most likely diagnosis. | When the "terminal force" of the QRS in V1 is below the baseline (i.e. QS wave), a LBBB is the most likely diagnosis. | ||
When the "terminal force" of the QRS in V1 is above the baseline (i.e. RSR' wave), it's a RBBB. | When the "terminal force" of the QRS in V1 is above the baseline (i.e. RSR' wave), it's a RBBB. | ||