Navigation Links
Patients With Pacemakers Should Avoid MRI Scans
Date:12/15/2009

Study examines potential for injury when doctors decide benefits of imaging outweigh the risks

TUESDAY, Dec. 15 (HealthDay News) -- MRI scans can pose a serious risk to people with heart pacemakers, researchers warn.

U.S. Food and Drug Administration researchers exposed pacemakers to a simulated MRI magnetic field and then measured the electrical voltage produced at the tip of the pacemaker lead, where it would touch the interior of the patient's heart.

The exposure to MRI magnetic pulses caused certain pacemakers to deliver a drastically altered pulse and stimulate the heart inappropriately, which could have serious consequences for a patient, the study authors reported in the Dec. 14 edition of BioMedical Engineering OnLine.

"MRI systems emit several types of extremely intense magnetic fields and have caused injury to patients due to interactions with pacemakers," study author Howard Bassen said in a news release from the journal's publisher. "Cardiologists who choose to scan patients with cardiac pacemakers must assess the risks versus the benefits of the scan. This paper identifies one more risk."

About 40 million MRI scans are performed annually in the United States, where 10 million people have pacemakers.

Pacemaker and MRI manufacturers instruct physicians not to expose patients with pacemakers to MRI scans, which can disrupt a pacemaker's electronic system and burn heart tissue at the tip of the pacemaker lead.

But, despite these instructions, some cardiologists have developed special protocols that describe how to perform MRI scans on patients with pacemakers. Their belief is that the diagnostic benefits of MRI outweigh the pacemaker malfunction risks.

More information

The American Heart Association outlines devices that may interfere with pacemakers.



-- Robert Preidt



SOURCE: BioMed Central, news release, Dec. 14, 2009


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Fluctuating eye pressure associated with visual field deterioration in glaucoma patients
2. Comparison of obstetric outcomes between on-call and patients own obstetricians
3. Vision restoration therapy shown to improve brain activity in brain injured patients
4. Diabetes appears to increase risk of death for patients with acute coronary syndromes
5. Ambulatory oxygen rarely a benefit in COPD patients without resting hypoxemia
6. Restricting Blood Flow May Help Heart Bypass Patients
7. Patients with Medicaid and those lacking insurance have higher risk of advanced laryngeal cancer
8. Study provides hope that some transplant patients could live free of antirejection drugs
9. Study provides hope that some transplant patients could live free of anti-rejection drugs
10. Longer ambulance journeys boost death risk for seriously ill patients
11. Expenses Overshadow Optimism for Kidney Failure Patients
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... , ... June 25, 2016 , ... The temporary closing of Bruton Memorial Library on ... Observer , brings up a new, often overlooked aspect of head lice: the parasite’s ability ... fumigation is not a common occurrence, but a necessary one in the event that lice ...
(Date:6/25/2016)... ... June 25, 2016 , ... ... recover from injury. Recently, he has implemented orthobiologic procedures as a method for ... is one of the first doctors to perform the treatment. Orthobiologics are substances ...
(Date:6/24/2016)... ... June 24, 2016 , ... Those who have experienced traumatic events may ... to unhealthy avenues, such as drug or alcohol abuse, as a coping mechanism. To ... for healthy coping following a traumatic event. , Trauma sufferers tend to feel a ...
(Date:6/24/2016)... ... 24, 2016 , ... Global law firm Greenberg Traurig, P.A. announced that 20 ... by their peers for this recognition are considered among the top 2 percent of ... honors as members of this year’s Legal Elite Hall of Fame: Miami Shareholders ...
(Date:6/24/2016)... ... June 24, 2016 , ... People across the U.S. are sharpening ... Talker Award, an essay contest in which patients and their families pay tribute to ... at the 2016 National Society of Genetic Counselors (NSGC) Annual Education Conference (AEC) this ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... 2016 Story Highlights: ... within the health care industry is causing providers to ... , Deloitte offers a suite of solutions for health ... efficient cost optimization: labor resource analysis, revenue cycle optimization ... better outcomes and better economics ...
(Date:6/24/2016)... , June 24, 2016  Collagen Matrix, Inc., ... development and manufacturing of collagen and mineral based ... today that Bill Messer has joined ... to further leverage the growing portfolio of oral ... Bill joins the Collagen Matrix executive ...
(Date:6/24/2016)... , June 24, 2016   Bay Area ... Network,s Dean Center for Tick Borne Illness ... and Rehabilitation, MIT Hacking Medicine, University of California, ... today announced the five finalists of Lyme ... disease.  More than 100 scientists, clinicians, researchers, entrepreneurs, ...
Breaking Medicine Technology: