Bigeminal Ménage à Trois

Report:

Sinus tachycardia 105/min

Intraventricular conduction delay

QRS 0.12”

VEBs, couplets

Bigeminy

Ventricular fusion beats

Comment:

The conducted sinus beats, with the VEBs, come in three varieties: “pure” sinus or “pure” ectopic beats, and fusion beats. Here, many of the couplets are, in reality, ménage à trois: a fusion complex and a “pure” beat. This bigeminy is really trigeminal.

Technically, xylocaine ordered over the phone (never a very sound practice) should be given, for the couplets.

172. 20 year old girl with normal ECG and echocardiogram, during a paroxysm of “racing heart”.

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