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The safety of magnetic resonance imaging (MRI) scans in patients undergoing dual-chamber pacemaker (Medtronic's EnRhythm MRI SureScan IPG (implantable pulse generator) and CapSureFix MRI pacing electrodes) implantation were evaluated. A total of 86 patients undergoing this pacemaker implantation who were admitted to Huanggang Hospital from June 2006 to March 2017 were continuously selected. On average 6.8±2.3 months after the implantation, the first MRI scan was conducted. The mean scan time was 2.2±0.9 and mean duration was 45.6±12.3 min; mean follow-up visit period was 40.5±15.6 months, and after follow-up, all the abnormal symptoms of patients and pacemaker abnormalities after scans were recorded. Causes of receiving MRI scans included neurological diseases (27%), spinal diseases (14%), cancers (26%), joint injuries (25%) and visceral systems (8%). A total of 12 cases (14.0%) showed significant discomfort symptoms, 10 cases (11.6%) showed pacemaker abnormalities, and the incidence rate was 25.6%. Multivariate logistic regression analysis showed that the basic types of cardiovascular diseases, dependence on pacemakers, duration of education, pacing threshold, impedance and MRI scan time were related to the occurrence of adverse scan results (p&lt;0.05). In conclusion, MRI scans show that MRI-compatible dual-chamber pacemaker was relatively safe.

Evaluation of the safety of MRI scans in patients undergoing dual-chamber pacemaker implantation