QRB interval

QRB in·ter·val

the time between the onset of the Q wave of the QRS complex and the right bundle-branch potential (normally 15-20 msec).

QRB in·ter·val

(in'tĕr-văl)
The time between the onset of the Q wave of the QRS complex and the right bundle-branch potential (normally 15-20 msec) on an electrocardiogram.