Fig 52.b

AV-paced rhythm with long AV interval promoting narrow(er) QRS complexes. Apart from the VEB, all the beats are probably fusion beats. It is also possible that theventricular lead does not work and the QRSs show the patient’s native IVCD.

AV-paced rhythm with long AV interval promoting narrow(er) QRS complexes. Apart from the VEB, all the beats are probably fusion beats. It is also possible that theventricular lead does not work and the QRSs show the patient’s native IVCD.
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