Malfunction of an MRI-Conditional Pacemaker Following an MRI

Figures

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  Figure 1. Initial interrogation of device. Note the “Date of visit” of 08-Apr-1996, underlined in red; the actual date of interrogation, 25-Feb-2015, handwritten above the device date and outlined in blue; and the correct date of implant, 11-May-2011, also outlined in blue.

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  Figure 2. Also from the initial interrogation of device. Note the date of SureScan on and off, 16-Jan-1996 (underlined in red), and the evidence of pacer dependence, with >99.9% ventricular pacing.

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  Figure 3. Initial interrogation rate histograms. Note the “Prior to Last Session” information dating back to 07-May-1994 (underlined in red).

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  Figure 4. Fluoroscopy images of the device, showing an intact dual-chamber pacemaker system.

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  Figure 5. Timeline of events. The actual dates of device interrogation are on the top portion of the figure, and the device-reported dates are below. There are an identical 83 days between actual magnetic resonance imaging (MRI) scan and our interrogation and between the MRI SureScan activation/deactivation and our interrogation.