Performing MRI on patients with MRI-conditional and non-conditional cardiac implantable electronic devices: an update for radiologists

2019 ◽  
Vol 74 (12) ◽  
pp. 912-917 ◽  
Author(s):  
A. Cunqueiro ◽  
M.L. Lipton ◽  
R.J. Dym ◽  
V.R. Jain ◽  
J. Sterman ◽  
...  
Keyword(s):  
Electronic Devices ◽  
Cardiac Implantable Electronic Devices ◽  
Mri Conditional

scholarly journals Canadian Heart Rhythm Society and Canadian Association of Radiologists Consensus Statement on Magnetic Resonance Imaging with Cardiac Implantable Electronic Devices

2014 ◽  
Vol 65 (4) ◽  
pp. 290-300 ◽  
Author(s):  
Atul Verma ◽  
Andrew C.T. Ha ◽  
Carole Dennie ◽  
Vidal Essebag ◽  
Derek V. Exner ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Electronic Devices ◽  
Heart Rhythm ◽  
Resonance Imaging ◽  
Cardiac Implantable Electronic Devices ◽  
Canadian Association ◽  
Mri Environment ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Conditional

Magnetic resonance imaging (MRI) has historically been considered contraindicated for individuals with cardiac implantable electronic devices (CIEDs) such as pacemakers and implantable defibrillators. Magnetic resonance scanners produce magnetic fields that can interact negatively with the metallic components of CIEDs. However, as CIED technology has advanced, newer MRI conditional devices have been developed that are now in clinical use and these systems have had demonstrated safety in the MRI environment. Despite the supportive data of such CIED systems, physicians remain reluctant to perform MRI scanning of conditional devices. This joint statement by the Canadian Heart Rhythm Society and the Canadian Association of Radiologists describes a collaborative process by which CIED specialists and clinics can work with radiology departments and specialists to safely perform MRI in patients with MRI conditional CIED systems. The steps required for patient and scanning preparation and the roles and responsibilities of the CIED and radiology departments are outlined. We also briefly outline the risks and a process by which patients with nonconditional CIEDs might also receive MRI in highly specialized centres. This document supports MRI in patients with MRI conditional CIEDs and offers recommendations on how this can be implemented safely and effectively.

Safety and Quality of 1.5-T MRI in Patients With Conventional and MRI-Conditional Cardiac Implantable Electronic Devices After Implementation of a Standardized Protocol

2016 ◽  
Vol 207 (3) ◽  
pp. 599-604 ◽  
Author(s):  
Juan C. Camacho ◽  
Courtney Coursey Moreno ◽  
Anand D. Shah ◽  
Pardeep K. Mittal ◽  
Andenet Mengistu ◽  
...  
Keyword(s):  
Electronic Devices ◽  
Cardiac Implantable Electronic Devices ◽  
Standardized Protocol ◽  
Mri Conditional

scholarly journals Is diversity harmful?—Mixed-brand cardiac implantable electronic devices undergoing magnetic resonance imaging

2021 ◽  
Author(s):  
Christoph Alexander König ◽  
Florian Tinhofer ◽  
Thomas Puntus ◽  
Achim Leo Burger ◽  
Nikolaus Neubauer ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Electronic Devices ◽  
Resonance Imaging ◽  
Cardiac Implantable Electronic Devices ◽  
Primary Endpoints ◽  
Increased Risk ◽  
Secondary Endpoints ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Conditional

Summary Background Many patients with cardiac implantable electronic devices (CIED) undergo magnetic resonance imaging (MRI); however, a relevant proportion have a CIED system that has not been classified as MRI-conditional because of generators and leads from different brands (mixed-brand group). The available data concerning the outcome of these mixed patients undergoing MRI is limited. Methods A retrospective single center study, including all patients with CIEDs undergoing MRI between January 2013 until May 2020, was performed. Primary endpoints were defined as death or any adverse event necessitating hospitalization or CIED revision. Secondary endpoints were the occurrence of any sign for beginning device or lead failure or patient discomfort during MRI. Results A total of 227 MRI examinations, including 10 thoracic MRIs, were carried out in 158 patients, with 1–9 MRIs per patient. Of the patients 38 underwent 54 procedures in the mixed-brand group and 89 patients underwent 134 MRIs in the MRI-conditional group. Of the patients 31 were excluded since the MRI conditionality could not be determined. No primary endpoints occurred within the mixed-brand group but in 2.2% of the MRI-conditional group (p = 1.000), with 2 patients developing new atrial fibrillation during MRI, of whom one additionally had a transient CIED dysfunction. No secondary endpoints were met in the mixed-brand group compared to 3.4% in the MRI-conditional group (p = 0.554). No complications occurred in the excluded patients. Conclusion The complication rate of CIED patients undergoing MRI was low. Patients with a mixed CIED system showed no signs of increased risk of adverse events compared to patients with MRI-conditional CIED systems.

scholarly journals Assessing access to mri in patients with cardiac implantable electronic devices in australia

2021 ◽  
Vol 22 (Supplement_2) ◽  
Author(s):  
N Page ◽  
K Chia ◽  
D Brazier ◽  
C Manisty ◽  
R Kozor
Keyword(s):  
Patient Monitoring ◽  
Life Support ◽  
Electronic Devices ◽  
Advanced Cardiac Life Support ◽  
Adverse Outcomes ◽  
Public Hospitals ◽  
National Guidelines ◽  
Tertiary Referral ◽  
Cardiac Implantable Electronic Devices ◽  
Mri Conditional

Abstract Funding Acknowledgements Type of funding sources: None. Background "Legacy" cardiac implantable electronic devices (CIEDs) have historically been considered non-MRI-conditional. However, a number of recent studies indicate that if certain protocols are followed, patients with such devices may undergo MRI without significant adverse outcomes. Nowadays, industry standards dictate that "modern" CIEDs are MRI compatible. Despite these developments, some patients with CIEDs are denied MRI. Paucity of access to this vital service has been shown to increase expense, lead to more invasive imaging and later diagnosis, and poorer patient outcomes.  This study aims to identify if Australian public hospitals provide MRI services for patients with modern and legacy CIEDs, the characteristics of the services, and the barriers to implementing such a service.  Methods This study surveyed all Australian Tertiary Referral Public Hospitals (n = 38), with a mixed qualitative and quantitative questionnaire.  Results 35 of the 38 sites completed the survey. Figure 1A shows that the majority of hospitals (30/35, 85.7%) offer MRIs for modern MRI-conditional CIEDs. In contrast, Figure 1B shows that only a minority of hospitals (3/35, 8.6%) offer MRIs for legacy CIEDs.  Protocols governing patient eligibility vary greatly among hospitals that scan modern devices. Locations either allow all CIEDs to be scanned, only non-dependent CIEDs, or only pacemaker CIEDs. 1.5 Tesla is the preferred strength to scan Modern CIEDs (59%), however a sizeable proportion scan at only 3.0 Tesla (10%) or both strengths (31%). A majority (80%) of staff in attendance of the scan were ACLS-trained (Advanced Cardiac Life Support), with no correlation to strength of MRI used. A range of different personnel attend the scan with varied patient monitoring strategies, and a majority (79%) offer thoracic as well as extra-thoracic scanning.  The few hospitals that scan legacy devices only scan at 1.5 tesla, and follow individualised protocols. These sites offer more personnel in attendance for the scan than for modern CIED scans, with all staff ACLS-trained including a physician who can direct CIED programming of required. These sites have more involved patient monitoring, and all also offer thoracic and extra-thoracic MRI scanning.  The predominant barrier identified was an absence of National Guidelines, followed by a lack of formal training or logistical device support. Conclusions The majority (85.7%) of Australian Tertiary Referral Public Hospitals have a MRI service for patients with modern CIEDs, but only 8.6% offer this service to patients with legacy CIEDs.  This highlights the need for a national effort to guide the provision of MRI services for patients with CIEDs, and address the identified barriers.

scholarly journals Is diversity harmful? - Mixed-brand cardiac implantable electronic devices undergoing magnetic resonance imaging

EP Europace ◽  
2021 ◽  
Vol 23 (Supplement_3) ◽  
Author(s):  
C Koenig ◽  
P Hellebart ◽  
J Koch ◽  
F Egger ◽  
T Puntus ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Primary Endpoint ◽  
Complication Rate ◽  
Electronic Devices ◽  
Resonance Imaging ◽  
Cardiac Implantable Electronic Devices ◽  
Increased Risk ◽  
Secondary Endpoints ◽  
Mri Conditional

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Many patients with cardiac implantable electronic devices (CIED) need to undergo magnetic resonance imaging (MRI). However, a significant proportion has a CIED system in place that has not been classified "MRI-conditional" because of generators and leads from different brands ("mixed-brand" group), although the individual components per se are MRI-conditional. There is only limited data available concerning the outcome of these patients with "mixed-brand" CIED systems undergoing MRI. Purpose To analyse complications or adverse effects in "mixed-brand" CIED patients undergoing MRI, compared to patients with a fully "MRI-conditional" CIED system. Methods A retrospective single-centre study was performed, including patients undergoing MRI between January 2013 until May 2020. Short- and long-term outcomes were compared between both groups. We defined the primary endpoint as death or any adverse event necessitating hospitalization or CIED revision in association with the MRI examination. Secondary endpoints were the occurrence of any surrogate for beginning device or lead failure or patient discomfort during MRI. Results A total of 227 MRI examinations, including 10 thoracic MRIs, were carried out in 158 patients, with a range of 1-9 MRIs per patient. Mean age was 73 years and 52 (32.9%) patients were female. We identified 38 patients undergoing 54 procedures in the "mixed-brand" group and 89 patients undergoing 134 MRI procedures in the "MRI-conditional" group. In 31 patients undergoing 39 MRI examinations the MRI-conditionality could not be determined. "Mixed-brand" patients were older than MRI-conditional patients (mean 77 vs. 72 years, p = 0.003). The primary endpoint occurred in 0% in the "mixed-brand" group and in 2.2% in the "MRI conditional" group (p = 1.000). Complications were as follows: Two patients had first diagnosed atrial fibrillation directly associated with the procedure, of whom one additionally had a transient CIED dysfunction. No patient in the "mixed-brand" group and three patients (3.4%) in the "MRI conditional" group met the secondary endpoints (p = 0.554). In patients with undeterminable MRI conditionality the complication rate was similar (0% for both the primary and secondary endpoints). Conclusion The complication rate of CIED patients undergoing MRI was low. There was no signal for increased risk of adverse events in patients with a CIED without MRI certification due to mixed brands systems compared to patients with "MRI-conditional" CIED systems.

Magnetic resonance imaging in patients with cardiac implantable devices – radiologist and cardiologist point of view

2019 ◽  
Vol 2 (51) ◽  
pp. 13-16
Author(s):  
Łukasz Mazurek ◽  
Michał Mazurek ◽  
Ewa Jędrzejczyk-Patej
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Electronic Devices ◽  
Implantable Devices ◽  
Point Of View ◽  
Published Data ◽  
Resonance Imaging ◽  
Cardiac Implantable Electronic Devices ◽  
Magnetic Resonance Imaging Mri ◽  
Mri Conditional

Patients with cardiac implantable electronic devices (CIEDs) constitute a considerable population. During entire life, these patients often require various diagnostic tests due to co-morbidities. Magnetic resonance imaging (MRI) was one of the contraindications in patients with CIEDs. The published data showed that MRI could be made safely in patients with CIEDs. Moreover, a lot of new CIEDs are MRI conditional. In the article we summarize the knowledge about performing MRI in patients with CIEDs.

Recent Advances in Pacing and Defibrillation

2011 ◽  
Vol 3 (1) ◽  
pp. 74
Author(s):  
Kathy L Lee ◽  
Keyword(s):  
Cardiac Death ◽  
Electronic Devices ◽  
Implantable Defibrillators ◽  
Cardiac Pacemakers ◽  
Cardiac Implantable Electronic Devices ◽  
Treatment And Prevention ◽  
Recent Advances ◽  
Pacing Lead ◽  
Leadless Pacing ◽  
Device Complications

Cardiac pacemakers have been the standard therapy for patients with bradyarrhythmias for several decades. The pacing lead is an integral part of the system, serving as a conduit for the delivery of energy pulses to stimulate the myocardium. However, it is also the Achilles’ heel of pacemakers, being the direct cause of most device complications both acutely during implant and chronically years afterwards. Leadless pacing with ultrasound-mediated energy has been demonstrated in animals and humans to be safe and feasible in acute studies. Implantable defibrillators revolutionised the treatment and prevention of sudden cardiac death. Subcutaneous implantable defibrillators have been under development for more than 10 years. A permanent implantable system has been shown to be feasible in treating induced and spontaneous ventricular tachyarrhythmias. These developments and recent advances in pacing and defibrillation will arouse further interest in the research and development of leadless cardiac implantable electronic devices.

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