case_images: PMC4007786_01
case_images: Pacing at DDD 65/110 beats per minute. Shown from top to bottom are the lead I, atrial electrogram (A egm), right ventricular electrogram (V egm), and annotations. AP: atrial pacing; AS: atrial sensing; RVP: right ventricular pacing; RVS: right ventricular sensing; LVP: left ventricular pacing. Cross-talk inhibition occurs at the fourth and fifth complex (arrows).
case_images: CRIM.CARDIOLOGY2011-624508.001.jpg
case_images: PMC4007786_01_CRIM.CARDIOLOGY2011-624508.001.jpg
case_images: fig1
case_images: However, at the time of device interrogation, the ECG showed intermittent ventricular inhibition.  Figure 1 demonstrates intermittent ventricular sensing followed by inhibition after atrial pacing.
case_images: Holter recording showing only atrial pacing spikes without ventricular response resulting in a pause of 7.4 seconds.
case_images: CRIM.CARDIOLOGY2011-624508.002.jpg
case_images: PMC4007786_01_CRIM.CARDIOLOGY2011-624508.002.jpg
case_images: fig2
case_images: A Holter recording performed 24 hours prior to the device checkup revealed several periods of asystole with duration up to 7.4 seconds as a consequence of cross-talk sensing (Figure 2).
case_images: Restoration of normal function without cross-talk sensing after reduction of the ventricular sensitivity to the least sensitive setting. Abbreviations are similar to Figure 1.
case_images: CRIM.CARDIOLOGY2011-624508.003.jpg
case_images: PMC4007786_01_CRIM.CARDIOLOGY2011-624508.003.jpg
case_images: fig3
case_images: Finally, cross-talk sensing disappeared after programming right-ventricular sensitivity from nominal to the least sensitive setting (Figure 3).