PMC5588790_01
Sinus rhythm, intermittent missed QRS complex (full arrows), followed by AsVp (A sensed, V paced) events (dashed arrows).
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A 66-year-old patient who was implanted with the Adapta DR pacemaker (Medtronic Inc, Minneapolis, MN, USA) presented to the emergency room after his general cardiologist noticed an aberrant electrocardiogram (ECG) (Figure 1) with suspicion of device dysfunction.
Device interrogation showing normal longevity, normal sensing and pacing parameters with MVP algorithm active (AAIR <==>DDDR).
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AV block and Mobitz 2 second-degree AV block. After checking the device (Figure 2) and becoming aware of the function of the Managed Ventricular Pacing (MVP; Medtronic) algorithm, the patient was reassured and subsequently discharged.