# LBBB -- leave title blank below
#+TITLE:  
#+AUTHOR:    David Mann
#+EMAIL:     mannd@epstudiossoftware.com
#+DATE:      [2018-07-08 Sun]
#+DESCRIPTION:
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#+LANGUAGE:  en
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* LBBB vs IVCD ± LVH
- Used to distinguish true LBBB from other causes of LBBB-like pattern, such as LVH, LAFB + LVH.  Patients with true LBBB may have greater benefit from cardiac resynchronization therapy.
* Criteria 
- QRS duration ≥ 140 msec men or ≥ 130 msec women
- QS or rS in leads V1 and V2
- mid-QRS notching or slurring in ≥ 2 leads V1, V2, V5, V6, I, aVL
- *All 3 criteria must be met to diagnose true LBBB*
* Reference
- Strauss DG, Selvester RH, Wagner GS. Defining Left Bundle Branch Block in the Era of Cardiac Resynchronization Therapy. American Journal of Cardiology. 2011;107(6):927-934. https://doi.org/10.1016/j.amjcard.2010.11.010
