Two Wrongs Making Two Rights!
Report:
Sinus tachycardia 110/min
Left bundle branch block
Left axis deviation
Runs of ventricular tachycardia 150 - 160/min
AV dissociation
Ventricular fusion beats
Comment:
This is from Schamroth himself: two wrongs sometimes make a right60. The two wrongs in the title above are LBBB and the VT; their fusion normalises the QRS twice - at each onset of the VT.
Note the poor performance of Lead 2 in the rhythm strip in demonstrating the VT morphology.
The left axis deviation (LAD) is not normally reported with LBBB; it’s here for didactic purposes, and also to mention that it conveys a worse outlook than normal axis in LBBB conduction61. Approximately 50% of LBBBs have left axis deviation.
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