BACKGROUND: The purpose of this study was to evaluate possible cumulative effects of repeated magnetic resonance imaging (MRI) examinations on pacemaker systems in patients with cardiac pacemakers. METHODS AND RESULTS: The records of pacemaker patients who underwent repetitive MRI examinations in our institution were reviewed to identify patients who underwent two or more MRI examinations at 1.5T of any anatomical region. Using these criteria, a total of 47 patients who underwent a total 171 MRI examinations were identified and included in this study. Institutional Review Board approval for all pacemaker investigations was obtained. Written informed consent was obtained from all patients. Pacemakers were interrogated immediately before and after MR imaging, and after 3 months, including measurement of pacing capture threshold (PCT), lead impedance (LI), and battery voltage (BV). PCT, LI, and BV were analyzed for changes dependant on the number of MRI exams performed. Mean changes over time and changes between first and last pacemaker interrogation of PCT, LI, and BV were calculated. A statistically significant (P < 0.05), but clinically irrelevant trend for decrease in PCT and BV was found. No significant or clinically relevant changes in LI were observed. CONCLUSION: In this first study, no clinically relevant, cumulative changes in PCT, LI, or BV could be detected in PM patients who underwent two or more MRI examinations. However, a careful benefit/risk evaluation, among other MRI- and pacemaker-related safety precautions, remains mandatory, as clinically relevant alterations to the PM system cannot be excluded by all means.
BACKGROUND: The purpose of this study was to evaluate possible cumulative effects of repeated magnetic resonance imaging (MRI) examinations on pacemaker systems in patients with cardiac pacemakers. METHODS AND RESULTS: The records of pacemaker patients who underwent repetitive MRI examinations in our institution were reviewed to identify patients who underwent two or more MRI examinations at 1.5T of any anatomical region. Using these criteria, a total of 47 patients who underwent a total 171 MRI examinations were identified and included in this study. Institutional Review Board approval for all pacemaker investigations was obtained. Written informed consent was obtained from all patients. Pacemakers were interrogated immediately before and after MR imaging, and after 3 months, including measurement of pacing capture threshold (PCT), lead impedance (LI), and battery voltage (BV). PCT, LI, and BV were analyzed for changes dependant on the number of MRI exams performed. Mean changes over time and changes between first and last pacemaker interrogation of PCT, LI, and BV were calculated. A statistically significant (P < 0.05), but clinically irrelevant trend for decrease in PCT and BV was found. No significant or clinically relevant changes in LI were observed. CONCLUSION: In this first study, no clinically relevant, cumulative changes in PCT, LI, or BV could be detected in PM patients who underwent two or more MRI examinations. However, a careful benefit/risk evaluation, among other MRI- and pacemaker-related safety precautions, remains mandatory, as clinically relevant alterations to the PM system cannot be excluded by all means.
Authors: Peter Thomas Burke; Hamid Ghanbari; Patrick B Alexander; Michael K Shaw; Marcos Daccarett; Christian Machado Journal: J Interv Card Electrophysiol Date: 2010-01-29 Impact factor: 1.900
Authors: Pierpaolo Lupo; Riccardo Cappato; Giovanni Di Leo; Francesco Secchi; Giacomo D E Papini; Sara Foresti; Hussam Ali; Guido M G De Ambroggi; Antonio Sorgente; Gianluca Epicoco; Paola M Cannaò; Francesco Sardanelli Journal: Eur Radiol Date: 2018-01-09 Impact factor: 5.315
Authors: Laleh Golestanirad; Leonardo M Angelone; John Kirsch; Sean Downs; Boris Keil; Giorgio Bonmassar; Lawrence L Wald Journal: IEEE Trans Microw Theory Tech Date: 2019-01-01 Impact factor: 3.599
Authors: Saman Nazarian; Rozann Hansford; Ariel Roguin; Dorith Goldsher; Menekhem M Zviman; Albert C Lardo; Brian S Caffo; Kevin D Frick; Michael A Kraut; Ihab R Kamel; Hugh Calkins; Ronald D Berger; David A Bluemke; Henry R Halperin Journal: Ann Intern Med Date: 2011-10-04 Impact factor: 25.391