Diagnosis- Belhassen’s tachycardia (posterior fascicular ventricular tachycardia)
Pointers-
1. QRS is wide, but not very wide, the width being 120 msec. This makes it difficult to differentiate whether this is VT or SVT.
2. Capture beat indicating that it is VT, not SVT.
3. RBBB + left axis deviation, the characteristic pattern in Belhassen’s tachycardia.
Comments are welcome!


#1 by MS Gopalakrishnan at July 30th, 2009
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Dear heartpearl,
I particularly liked this EKG strip since it was reminiscent of the electrical activity we used to record when in proximity to the venusian whales which often get agitated by our ship’s wake. Though these days captains try to calm these electrical storms with RF torpedoes, we didn’t favor the aggression of permanent disruption of what was essentially a normal phenomenon in those species. We stuck to verap bates…
Kudos to you for setting up this cool site!
#2 by Janis Wilkinson at September 22nd, 2010
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If Belhassens is caught early will it cause any damage to the heart. Is Belhassens often asymtomatic if the rate is slow and if the person is young and can compensate? Is it congenital ? please give me a good website for this arrythmia in a young health person and presentation signs symtoms etc