Navigation Links
Mayo Clinic study shows people with heart devices can 'digest' advanced diagnostic technology safely
Date:10/26/2009

SCOTTSDALE, Ariz. A new Mayo Clinic study suggests that video capsule endoscopy (CE), a procedure that uses wireless technology in diagnosing intestinal disease, is safe for patients with heart devices. Wireless electrical gadgets, such as cell phones, have been shown to interfere with implanted heart devices, including pacemakers and defibrillators. This risk has led medical experts to speculate that capsule endoscopy could similarly cause heart devices to fail.

As a result, the noninvasive procedure has been contraindicated by the U.S. Food and Drug Administration (FDA) for patients with cardiac devices. Contraindication means an increased risk may be involved.

Generally, the topic has remained in the subject of speculation, although several small studies have found no interference with cardiac devices, and no clinical reports have surfaced linking CE to problems with them.

The study concludes that performing a video capsule endoscopy on patients who have cardiac devices appears safe, and, conversely, the cardiac implants don't impair capsule endoscopies.

"Ours is the largest study of its kind, with 84 patients (91 capsule studies), and we found no complications from the capsule endoscopy," says Jonathan Leighton, M.D., chair of the Division of Gastroenterology at Mayo Clinic in Arizona and senior author of a report on the research.

"The size of the study population should give physicians confidence to use the procedure," says Dr. Leighton. Mayo physicians perform capsule endoscopy routinely, averaging from two to five cases a week at the Arizona site.

In the study, Lucinda Harris, M.D., Stephanie Hansel, M.D., reviewed the medical records of 84 patients who underwent CE and had implantable cardiac devices cardiac pacemakers, defibrillators or left ventricular assist devices at Mayo Clinic's campuses in Arizona and Rochester, Minn.

The patients' average age was 73, and 69 percent had pacemakers. In a large majority of cases (74 percent), the reason for performing the CE was to locate gastrointestinal bleeding. In each case, the capsule explored the entire length of the small bowel. Assessments after the procedure revealed no interference with the implanted cardiac devices.

Approved by the FDA in 2000, capsule endoscopy uses a tiny wireless camera to examine the inside of the digestive tract. The patient swallows a vitamin-sized capsule containing a battery-driven camera that travels through the intestines, taking thousands of pictures. It then transmits them to an external receiver from areas deep inside the small bowel previously accessible only through surgery. The device is later excreted through the colon.

The use of capsule endoscopy has solved a long-term problem for doctors: visualizing the midsection of the small intestine, which can measure 20 feet in length. Standard endoscopy, done through the mouth or the rectum, can't penetrate deeply enough and requires anesthesia. Now, CE is used to visualize the entire small intestine. Most commonly, it is used to find the source of unexplained bleeding. The procedure is also used to detect the causes of anemia, abdominal pain and certain intestinal diseases.

Because cell phones, microwave ovens and other wireless appliances have affected heart devices, physicians were concerned that the radiofrequencies used in CE may potentially interfere with the radiofrequency of heart devices. But in the study, the only research complication occurred when a capsule's receiver stopped working for reasons unrelated to a heart device, according to Dr. Harris, a Mayo gastroenterologist and first author on this study.

"There were no problems with the devices interacting," says Dr. Harris. "The data is now out there. We are coming to the point where we know this is a relatively safe procedure. She was scheduled to report on the project Monday, Oct. 26, at a meeting of the American College of Gastroenterology in San Diego.

Affirming the procedure's safety when heart devices are present mainly benefits elderly patients, who are the most prone to have implanted devices (primarily pacemakers) and to experience unexplained intestinal bleeding from illnesses or blood-thinning medications.

Mayo doctors plan to continue using capsule technology on patients with implants. But even with the positive results of the study, they will continue to do CE as an inpatient procedure.

"If it were not contraindicated by the FDA, we would do it as outpatient, and it would reduce costs, just as safely," says Dr. Leighton.


'/>"/>

Contact: Lynn Closway
closway.lynn@mayo.edu
480-301-4337
Mayo Clinic
Source:Eurekalert

Related medicine news :

1. Anemia and tropical diseases; Is pharmacogenomics ready for the clinic?
2. Radiologists encouraged to look beyond cancer for clinically unseen diseases
3. Clinical depression linked to abnormal emotional brain circuits
4. Preclinical study suggests organ-transplant drug may aid in lupus fight
5. Mayo Clinic researchers discover new diagnostic test for detecting infection in prosthetic joints
6. AASM encourages those student-athletes at risk for developing osa to visit a sleep clinic
7. Thailand: Partners Open Free AIDS Treatment Clinic in Renowned AIDS Temple in Lop Buri
8. MinuteClinic Becomes Participating Provider with Assurant Health
9. Therap Services Continues to Hire Experienced Developmental Disability Industry Clinicians for its Customer Support Team
10. Acupuncturists Relocation Tightens Relationship With Fertility Clinic
11. Cardiovascular Technologies to be Highlighted at 5th Annual Cleveland Clinic Medical Innovation Summit, Oct. 1-3
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/26/2016)... ... , ... Despite last week’s media reports hinting at a June rate hike ... March 2017 for an interest rate increase, according to Rajeev Dhawan of the Economic ... Federal Open Market Committee (FOMC) dot charts are of interest to the press for ...
(Date:5/26/2016)... Hampshire (PRWEB) , ... May 26, 2016 , ... ... care products, has been honored with a 2016 When Work Works Award for its ... award, part of the national When Work Works project administered by the Families and ...
(Date:5/26/2016)... , ... May 26, 2016 , ... ... clinical outcomes, hosted members and suppliers for its inaugural Member Conference at the ... their mission of elevating the operational health of America’s healthcare providers. , The ...
(Date:5/26/2016)... ... 2016 , ... Connor Sports, through its Connor Cares initiative, will ... Tamika Catchings Legacy Tour that will commemorate the Indiana Fever legend’s hall-of-fame career ... all forms and levels of the game, Connor Sports has committed to a significantly ...
(Date:5/26/2016)... ... , ... The Woodlands at John Knox Village , Florida’s first Life ... living and healing, celebrated its grand opening, today. The Woodlands at John Knox Village ... Empowered Staff. , “This is an incredibly fulfilling time for John Knox Village as ...
Breaking Medicine News(10 mins):
(Date:5/25/2016)... , May 25, 2016  Granger Diagnostics today ... test for wounds and infections. This test ensures ... and select viruses. The test requires only a ... David G. Bostwick , MD, ... to facilitate wound healing: "We are excited to ...
(Date:5/25/2016)... , May 25, 2016 ... the precision of circulating tumour DNA (ctDNA) analysis ... the appointment of Professor Clive Morris ... leadership across the clinical development programme, scientific collaborations, ... help deliver significant improvements in clinical outcomes for ...
(Date:5/24/2016)... -- Cirujanos holandeses han puesto en marcha ... a compartir sus mejores prácticas por el mundo y ... de Europa, África, Asia y ... que combina la transmisión en vivo con mensajería instantánea ... Educación   "Imagine un médico de Medicines sans ...
Breaking Medicine Technology: