Introduction
In practice, patients with implantation of earlier pacemakers have
chances of PMT, which pushes the advances and enrichments in pacemaker
special functions[1]. Producers developed PVARP extension mechanism
to avoid detection of the retrograde P wave in order to prevent PMT
occurrence[2]. Such innovations greatly help to prevent the PMT
brought by the pacemakers. Yet, the special functions of pacemakers also
induce unexpected arrhythmia in patients.
We reported one complex but not rare case that presented the negative
outcomes derived from the combined functions of PVC and VSS of
pacemakers.