Emergent use of an MRI-conditional external pacemaker in a patient with sinus arrest facilitating diagnosis of a temporal lobe neoplasm Erin M. McGuinn,

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Emergent use of an MRI-conditional external pacemaker in a patient with sinus arrest facilitating diagnosis of a temporal lobe neoplasm Erin M. McGuinn, MD, Nirmanmoh Bhatia, MD, Jared M. O’Leary, MD, George H. Crossley, MD, FACC, FHRS, Jeffrey N. Rottman, MD, FHRS HeartRhythm Case Reports Volume 2, Issue 4, Pages 296-299 (July 2016) DOI: 10.1016/j.hrcr.2016.01.012 Copyright © 2016 Heart Rhythm Society Terms and Conditions

Figure 1 T2-weighted FLAIR sequence from the patient's brain magnetic resonance imaging after external pacemaker placement demonstrates hyperintense signal within the right temporal lobe inclusive of the hippocampus, the right parahippocampal gyrus, and right cortical spinal tract within the right internal capsule posterior limb and right cerebral peduncle, and the bilateral corpus callosum splenium with extension to the bilateral parietal lobes. HeartRhythm Case Reports 2016 2, 296-299DOI: (10.1016/j.hrcr.2016.01.012) Copyright © 2016 Heart Rhythm Society Terms and Conditions

Figure 2 Progression from normal sinus rhythm to asystole during a seizure episode lasting for 20 seconds without alteration in electrical intervals or QRS morphology. HeartRhythm Case Reports 2016 2, 296-299DOI: (10.1016/j.hrcr.2016.01.012) Copyright © 2016 Heart Rhythm Society Terms and Conditions