Navigation Links
Results of the ADVISE trial reported at TCT 2011
Date:11/11/2011

SAN FRANCISCO, CA NOVEMBER 11, 2011 Researchers conducting the ADVISE clinical trial have concluded that a new measure of stenosis severity, instantaneous wave-free ratio (iFR), yielded similar results to traditional fractional flow reserve (FFR) without the use of adenosine to induce maximum hyperemia. Trial results were presented today at the 23rd annual Transcatheter Cardiovascular Therapeutics (TCT) scientific symposium, sponsored by the Cardiovascular Research Foundation.

FFR, while the leading invasive measure of stenosis severity, is only used in 6% or fewer of percutaneous coronary intervention (PCI) cases in the United States. One of the reasons for the low usage rate is the required use of the drug adenosine, which minimizes and stabilizes coronary resistance during the test, but is uncomfortable for patients, as well as being time-consuming and expensive.

In ADVISE (ADenosine Vasodilation Independent Stenosis Evaluation), 157 stenoses (131 patients) were recruited to this pilot, nonrandomized, international, multi-center study. In their investigations, researchers developed a new pressure-based index that does not require adenosine.

Wave intensity analysis identified a period during the normal heart rhythm cycle where intracoronary resistance at rest is similar in variability and magnitude (CV: 0.080.06 and 284147mmHg.s/m) to those during FFR (CV: 0.080.06 and 302315mmHg.s/m, p=NS for both).

The resting ratio of the distal-to-proximal pressure during this period, iFR, correlated closely with FFR (r=0.9, p<0.001) with excellent diagnostic efficiency (receiver operating characteristic area under curve of 93%, at FFR<0.8), specificity, sensitivity, and negative and positive predictive values of 91%, 85%, 85% and 91%, respectively.

"The results of the ADVISE trial indicate that intra-coronary resistance is naturally constant and minimized during the wave-free period. The instantaneous wave-Free Ratio (iFR) calculated over this period produces a drug-free index of stenosis severity that is comparable to FFR," said principal investigator Justin Davies, MBBS, MRCP, PhD. Dr Davies is a clinical academic and interventional cardiologist at the National Heart and Lung Institute at Imperial College London.

"The clinical implications of the trial are that significant barriers to a physiological assessment of stenoses have been removed, and the new technique can potentially improve work-flow in the cath lab, leading to a better patient experience and increased adoption," said Dr. Davies.


'/>"/>

Contact: Judy Romero
jromero@crf.org
Cardiovascular Research Foundation
Source:Eurekalert

Related medicine news :

1. Lincare Holdings Inc. Announces Fourth Quarter and Year Ended 2009 Financial Results
2. SXC Health Solutions to Host Fiscal 2009 Fourth Quarter and Year End Results Conference Call
3. Team Health Holdings, Inc., Announces Fourth Quarter and Fiscal 2009 Financial Results
4. First blinded study of venous insufficiency prevalence in MS shows promising results
5. NEJM Publishes Trial Results Demonstrating Bard FLAIR Endovascular Stent Graft Is Superior To Balloon Angioplasty For Failing Dialysis Grafts
6. BioMed Realty Trust Reports Fourth Quarter and Full-Year 2009 Financial Results
7. Kaiser Foundation Health Plan and Hospitals Report Fourth Quarter and Fiscal Year 2009 Financial Results
8. United American Healthcare Corporation Announces Fiscal 2010 Second Quarter Results
9. Fitness Trend Towards Online Personal Training Gets Real-World Weight Loss Results on FitOrbit.com
10. Protein Sciences Corporation Announces Profitable and Cash Flow Positive Results for 2009 and Management Realignment
11. WebMD Announces Fourth Quarter Financial Results
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... Long Beach, CA (PRWEB) , ... June 25, 2016 , ... ... from UCLA with Magna Cum Laude and his M.D from the David Geffen School ... San Diego and returned to Los Angeles to complete his fellowship in hematology/oncology at ...
(Date:6/25/2016)... ... June 25, 2016 , ... Conventional wisdom preaches the benefits ... terms of the latter, setting the bar too high can result in disappointment, perhaps ... slow progress toward their goal. , Research from PsychTests.com reveals that ...
(Date:6/24/2016)... ... June 24, 2016 , ... June 19, 2016 is World Sickle Cell ... pain and the benefits of holistic treatments, Serenity Recovery Center of Marne, ... Cell Disease. , Sickle Cell Disease (SCD) is a disorder of the red blood ...
(Date:6/24/2016)... ... 2016 , ... Global law firm Greenberg Traurig, P.A. announced that 20 Florida ... their peers for this recognition are considered among the top 2 percent of lawyers ... as members of this year’s Legal Elite Hall of Fame: Miami Shareholders Mark ...
(Date:6/24/2016)... ... June 24, 2016 , ... Topical BioMedics, Inc, makers of Topricin and MyPainAway Pain Relief ... a minimum wage raise to $12 an hour by 2020 and then adjusting it yearly ... lost value of the minimum wage, assure the wage floor does not erode again, and ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... 23, 2016 Revolutionary technology includes ... Oticon , industry leaders in advanced audiology and hearing ... Oticon Opn ™, the world,s first internet connected hearing ... IoT devices.      (Photo: http://photos.prnewswire.com/prnh/20160622/382240 ... number of ,world firsts,: , TwinLink™ - ...
(Date:6/23/2016)... June 23, 2016 The vast majority of ... dialysis facility.  Treatments are usually 3 times a week, ... visit, including travel time, equipment preparation and wait time. ... especially grueling for patients who are elderly and frail.  ... nursing and rehabilitation centers for some duration of time. ...
(Date:6/23/2016)... Tenn. , June 23, 2016 /PRNewswire/ ... automating, integrating and transforming the patient payment ... of several innovative new products and services ... of its revenue cycle offerings. These award-winning ... more efficient workflows, remain compliant in an ...
Breaking Medicine Technology: