Conclusions
In this study, we showed that under predisposing device settings loss of
atrial capture has a high likelihood of triggering RNRVAS in DDD
pacemakers/ICDs and CRTs of 5 different manufacturers. We also
demonstrated that in the presence of sinus node dysfunction, RNRVAS may
be seen even at very low heart rates. The incidence of RNRVAS may be a
lot higher than previously reported. Our findings may help explain the
reason behind presence of RNRVAS as a reason for erroneous AHRE
recordings. In patients with VA conduction, we recommend avoiding RNRVAS
predisposing settings. New algorithms for diagnosis and
prevention/suppression of RNRVAS seem to be required in current devices.
Acknowledgement: We would like to express our deepest thanks to
Zeynep Akyol Ataman, PhD for proof reading this article.
Conflict of interest: none of the authors has associations that
might pose a conflict of interest.