QrV1 Fascicular Tachycardia
Report:
Ventricular tachycardia 180/min
Comment:
The QRS is only 0.10” long, qualifying this as a fascicular VT. Its ventricular source is easily detected in V1, where the broad Q wave slopes obligingly over the requisite 0.06” to its nadir. The gracile R wave is appended, making doubly sure nobody mistakes this complex for LBBB.
Another sinus rhythm ECG, at 51/min, is shown in Fig 27b, with a QR of rapid descent in V1.
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