Magnetic resonance imaging conditional pacemakers: rationale, development and future directions

Area of Science:

• Cardiology
• Radiology
• Biomedical Engineering

Background:

• Cardiac implantable electronic devices (CIEDs) historically prohibited magnetic resonance imaging (MRI) due to safety concerns.
• Despite developed protocols for scanning conventional CIEDs, access to MRI remains limited for many pacemaker patients.
• The advent of MRI conditional pacemakers offers a significant advancement in patient care.

Purpose of the Study:

• To review the interactions between pacemakers and the MRI environment.
• To summarize the outcomes of MRI scans in patients with conventional CIEDs.
• To discuss the development and clinical utility of MRI conditional pacemakers.

Main Methods:

• Review of existing literature on CIEDs and MRI compatibility.
• Analysis of safety protocols and complication rates for MRI in CIED patients.
• Examination of the technology and clinical data for MRI conditional pacemakers.

Main Results:

• Conventional CIEDs pose significant risks during MRI, necessitating specialized protocols.
• MRI conditional pacemakers have demonstrated a low complication rate, expanding MRI access.
• Protocols for conventional CIEDs, while effective, are not universally applied.

Conclusions:

• MRI conditional pacemakers represent a breakthrough, enabling broader access to essential diagnostic imaging.
• Continued research and standardization of protocols are crucial for optimizing MRI safety in CIED patients.
• The review highlights the evolution from contraindication to safe utilization of MRI in pacemaker recipients.