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:5/28/2016)... ... 2016 , ... After a year and a half of planning the Multiple Pathways of ... Multiple Pathways of Recovery Conference was held May 2 -4, 2016 at the Mystic ... came together to explore the many pathways individuals use to get into and sustain their ...
(Date:5/27/2016)... Gilsum, New Hampshire (PRWEB) , ... May 27, 2016 , ... ... natural skin care products, announced today that it has been recognized as one of ... men entering parenthood. Badger was named as one of nine small businesses providing progressive ...
(Date:5/27/2016)... , ... May 27, 2016 , ... ... to help educate the many who are unaware of the plight of aphasia. ... will run within the “Stroke Awareness” campaign. , The link between stroke and ...
(Date:5/27/2016)... ... May 27, 2016 , ... With ... pharmaceutical, medical and food industries. Aside from its GMP accreditation, Validation Center is ... of successfully certified products, services and staff. , Validation Center is ISO17025 accredited ...
(Date:5/26/2016)... ... May 26, 2016 , ... Intalere, the healthcare industry ... for its inaugural Member Conference at the Paris Hotel in Las Vegas, Nev., ... health of America’s healthcare providers. , The conference was highlighted by the announcement ...
Breaking Medicine News(10 mins):
(Date:5/27/2016)... , May 27, 2016 ... innovative biopharmaceutical company focused on late-stage drug development, ... Dexcel Pharma of pivotal batches required for ... Drug Administration (FDA). This follows Kitov,s announcement ... III trial successfully met its primary efficacy endpoint. ...
(Date:5/26/2016)... According to a new market report ... U.S. Industry Analysis, Size, Share, Growth, Trends, and Forecast 2015 ... was valued at US$ 5.89 Bn in 2014 and is ... to 2023 to reach US$ 7.99 Bn in 2023. ... needle free drug delivery devices and the market is estimated ...
(Date:5/26/2016)... , May 26, 2016   ... software and analytics, network solutions and technology-enabled ... announced it entered into a strategic channel ... of outpatient software solutions and revenue cycle ... specialty hospitals and rehabilitation clinics to optimize ...
Breaking Medicine Technology: