MDCT helps better determine valve implant size for transcatheter aortic valve in patients with aortic stenosis

April 13, 2013, American Roentgen Ray Society

MDCT is a better way to measure annular size in patients with aortic stenosis who are candidates for transcatheter aortic valve implantation (TAVI) than two dimensional echocardiography, a new study indicates.

The study included 69 patients who underwent an MDCT scan as well as transthoracic and transesophageal before having a TAVI, said Dr. Vineeta Sethi, lead author of the study. TAVI is done to treat patients with who are not surgical candidates. Aortic stenosis is a common disorder in the elderly.

"Measurement of the aortic annulus is crucial for implant size selection and procedure success," said Dr. Sethi. "If the implanted valve is too small, blood will leak outside of the valve apparatus back into the heart."

Measurements obtained on MDCT were significantly different than those obtained on echocardiography. "The decision to use a certain valve size would have been changed in about 55% of patients in our study if MDCT measurements had been used rather than echocardiography measurements," she said. "This includes patients who were wrongly sized as well as those who would have been disqualified from having TAVI due to the large size of their aortic annulus," she added.

She also stated that transesophagea/transthoracic echocardiographically derived measurements of the aortic annulus are the current standard for measurement but with the increasing awareness of the in measurement between MDCT and echocardiography, more people are using MDCT derived measurements to choose appropriate valve size.

The study will be part of the electronic exhibit program at the ARRS Annual Meeting in Washington, DC.

Explore further: Transcatheter aortic valve implantation shows promise in patients with severe aortic stenosis

Related Stories

Transcatheter aortic valve implantation shows promise in patients with severe aortic stenosis

April 10, 2012
German researchers report success with transcatheter aortic valve implantation (TAVI) in patients with low-flow, low-gradient aortic stenosis—a special form of aortic stenosis that is difficult to treat. Results published ...

Gender differences in clinical presentation and outcome of transcatheter aortic valve implantation

August 29, 2011
Severe aortic stenosis (AS) is increasing in frequency as the population ages. For a subset of patients in whom surgical conventional aortic valve replacement is excluded due to severe co-morbidities, an alternative to surgical ...

Hemodynamic results after Transcatheter Aortic Valve Implantation (TAVI)

August 30, 2011
Since 2007 Transcatheter Aortic Valve Implantation (TAVI) has become an alternative treatment for elderly patients with severe aortic stenosis at high risk for surgical aortic valve replacement. At present, durability and ...

Results of the STACCATO Trial reported at TCT 2011

November 10, 2011
Researchers leading a clinical trial said that transapical transcatheter aortic valve implantation (a-TAVI) may be inferior to surgical aortic valve replacement (SAVR) in operable elderly patients. However results were only ...

Recommended for you

Neonatal pig hearts can heal from heart attack

August 15, 2018
While pigs still cannot fly, researchers have discovered that the hearts of newborn piglets do have one remarkable ability. They can almost completely heal themselves after experimental heart attacks.

Genomic autopsy can help solve unexplained cardiac death

August 15, 2018
Molecular autopsies can reveal genetic risk factors in young people who unexpectedly die, but proper interpretation of the results can be challenging, according to a recent study published in Circulation.

Fifty percent of cardiovascular patients suffer from multiple diseases

August 15, 2018
New research led by The University of Western Australia has revealed that one in two patients admitted to hospital with a cardiovascular disease is suffering from multiple chronic medical conditions which required complex ...

Innovative triple pill significantly lowers blood pressure, study finds

August 14, 2018
A new low dose three in one pill to treat hypertension could transform the way high blood pressure is treated around the world.

Drug repurposing study sheds light on heart disease risk

August 14, 2018
A team led by researchers at Brigham and Women's Hospital has developed a computational technique to reveal the unknown side effects—both good and bad—of hundreds of drugs. That knowledge could help pharmacologists discover ...

Rethinking the stroke rule 'time is brain'

August 13, 2018
In 1993, neurologist Camilo R. Gomez, MD, coined a phrase that for a quarter century has been a fundamental rule of stroke care: "Time is brain!"

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.