September 11, 2006Circulation
Clinical Utility and Safety of a Protocol for Noncardiac and Cardiac Magnetic Resonance Imaging of Patients With Permanent Pacemakers and Implantable-Cardioverter Defibrillators at 1.5 Tesla
Why the study?
Does a specific safety protocol allow safe and diagnostically useful 1.5T MRI in patients with permanent pacemakers and implantable cardioverter-defibrillators?
Population
55 patients with permanent pacemakers or implantable cardioverter-defibrillators who had no imaging…
Design
Cohort
Follow-up
median 99 days
Authors
Discussion
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Member takes
Implication
Supports protocol-guided 1.5T MRI in selected device patients; hypothesis-generating pending randomized confirmation.
Structured PICO
Does a specific safety protocol allow safe and diagnostically useful 1.5T MRI in patients with permanent pacemakers and implantable cardioverter-defibrillators?
P
Population
55 patients with permanent pacemakers (n=31) or implantable cardioverter-defibrillators (n=24) who had no imaging alternative and devices shown to be MRI safe by in vitro and in vivo testing
I
Intervention
Noncardiac and cardiac MRI at 1.5 Tesla using a specific safety protocol (device reprogramming, monitoring, and limiting whole-body average specific absorption rate to 2.0 W/kg)
O
Outcome
Safety (inappropriate inhibition/activation of pacing, changes in sensing amplitudes, lead impedances, or pacing thresholds) and diagnostic utility (ability to answer diagnostic questions)safety
A specific protocol involving device reprogramming and SAR limitation allows for safe and diagnostically useful 1.5T MRI in selected patients with pacemakers and ICDs.
Cite This Study
Nazarian et al. (2006) studied this question.