Key result
Reprogramming the pacemaker by increasing sensitivity and adjusting the basal rate and hysteresis resolved the double pacing spikes and restored an intrinsic rhythm at 45 bpm.
Case Report (n=1)
Reprogramming may resolve double spikes noninvasively; leaves open generalizability beyond this case.
We report a case of a 54-year-old female, known symptomatic sick sinus syndrome, who had undergone a single-chamber pacemaker (VVI, St. Jude Medical, VERITY ADxXL SC SN 2413520) implantation in 2011. Electrocardiography (ECG) performed on a recent visit to the pacemaker clinic showed intermittent double pacing spikes on top of the T wave (Fig. 1A). What is the mechanism?
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Sundaram et al. (2021) conducted a case report in Sick sinus syndrome with single-chamber pacemaker (n=1). Pacemaker reprogramming was evaluated. Reprogramming the pacemaker by increasing sensitivity and adjusting the basal rate and hysteresis resolved the double pacing spikes and restored an intrinsic rhythm at 45 bpm.
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