Featured Research

from universities, journals, and other organizations

Common test may be unnecessary for bariatric surgery candidates

Date:
July 19, 2011
Source:
Lifespan
Summary:
A new study has found that stress testing with myocardial perfusion imaging as part of a pre-operative workup for bariatric surgery candidates may be unnecessary.

A new study by researchers from Rhode Island Hospital has found that stress testing with myocardial perfusion imaging as part of a pre-operative workup for bariatric surgery candidates may be unnecessary.

Related Articles


The research is published in the Journal of Nuclear Cardiology, and is now available online in advance of print.

Obesity is considered to be an epidemic in the United States, with more than two-thirds of the adult population overweight, and half of those adults are obese. Severe obesity is considered a chronic disease due to its potential to cause serious and potentially life-threatening health consequences. While the best approach to treatment of obesity is yet to be determined, bariatric surgery has been found to be safe and effective in reducing some of the complications associated with obesity.

For bariatric surgery candidates, many are screened for cardiovascular disease prior to surgery because of the high prevalence of coronary artery disease (CAD) risk factors in this population, along with the presence of underlying functional limitations, which may make assessment of CAD symptoms difficult. A common tool used for this is stress testing with myocardial perfusion imaging (MPI). The incidence, however, of clinically significant abnormalities identified through stress MPI performed for this indication has not yet been established.

In order to determine whether this test is needed and should be considered a necessary part of the bariatric surgery workup, a James Arrighi, M.D., a cardiologist with Rhode Island Hospital, led a study of 383 consecutive stress MPI studies performed on patients undergoing workup prior to planned bariatric surgery. The mean age of the population was 42, 83 percent female and a body mass index of 49 (+/- 8).

Arrighi and his team reported several important findings in this study. First, 67 percent of patients underwent stress-only imaging, despite the fact that overweight patients are often difficult to image. Stress-only imaging significantly reduces the time required, radiation exposure, and cost associated with the test. Second, the study findings show that the incidence of abnormal MPI studies was low, and associated with a very low incidence of death or cardiac events at one-year follow-up, with less than 1 percent incidence of death from all causes or incidence of coronary revascularization, and there were no myocardial infarctions. Third, the perioperative cardiovascular events were extremely low, despite the high prevalence of risk factors for coronary artery disease.

Arrighi says, "Overall SPECT MPI findings were normal in 89 percent and equivocal in six percent of the patients. The incidence of abnormal findings on MPI was only 5 percent. While stress testing in this patient population has been a relatively common practice with good cause, the findings of this study suggest that these tests may not be indicated in all patients."

He concludes, "The results of our study suggest that this patient population is actually at very low risk for cardiovascular events, and if this is indeed the case, the routine preoperative stress testing with MPI for the detection of CAD may be unlikely to affect outcome. Additional studies are needed, however, to determine how higher-risk patients should be selected for pre-operative noninvasive risk stratification."

Other researchers involved in the study with Arrighi include Brian G. Abbott, M.D., G. Dean Roye, M.D., David Harrington, M.D., and cardiology fellows Anthony Gemignani, M.D. and Stephan Muhlebach, M.D., all of Rhode Island Hospital and The Warren Alpert Medical School of Brown University.


Story Source:

The above story is based on materials provided by Lifespan. Note: Materials may be edited for content and length.


Cite This Page:

Lifespan. "Common test may be unnecessary for bariatric surgery candidates." ScienceDaily. ScienceDaily, 19 July 2011. <www.sciencedaily.com/releases/2011/07/110719111542.htm>.
Lifespan. (2011, July 19). Common test may be unnecessary for bariatric surgery candidates. ScienceDaily. Retrieved November 27, 2014 from www.sciencedaily.com/releases/2011/07/110719111542.htm
Lifespan. "Common test may be unnecessary for bariatric surgery candidates." ScienceDaily. www.sciencedaily.com/releases/2011/07/110719111542.htm (accessed November 27, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Thursday, November 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Leaves Orphans Alone in Sierra Leone

Ebola Leaves Orphans Alone in Sierra Leone

AFP (Nov. 27, 2014) — The Ebola epidemic sweeping Sierra Leone is having a profound effect on the country's children, many of whom have been left without any family members to support them. Duration: 01:02 Video provided by AFP
Powered by NewsLook.com
Experimental Ebola Vaccine Shows Promise In Human Trial

Experimental Ebola Vaccine Shows Promise In Human Trial

Newsy (Nov. 27, 2014) — A recent test of a prototype Ebola vaccine generated an immune response to the disease in subjects. Video provided by Newsy
Powered by NewsLook.com
Pet Dogs to Be Used in Anti-Ageing Trial

Pet Dogs to Be Used in Anti-Ageing Trial

Reuters - Innovations Video Online (Nov. 26, 2014) — Researchers in the United States are preparing to discover whether a drug commonly used in human organ transplants can extend the lifespan and health quality of pet dogs. Video provided by Reuters
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) — Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins