Measuring fractional flow reserve (FFR) with a 0.014 pressure wire is the standard to assess the functional significance of epicardial coronary artery stenosis. The use of FFR in the clinical practice lags despite strong supporting evidence. Some of the reasons behind this are technical aspects, like pressure wire handling limitations when assessing certain lesions, or how...
The presence of inducible ischemia is an essential prerequisite to obtain clinical benefits from revascularization through angioplasty. In that sense, the measurement of fractional flow reserve (FFR) is the gold standard as regards invasive methods assessing the functional significance of epicardial artery stenosis. As opposed to FFR, the measurement of the instantaneous wave-free ratio (iFR)...
Fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR) are commonly used to assess physiological severity of angiographically intermediate stenosis. Both indexes quantify a pressure ratio as subrogate to measuring flow, which is much harder to do. Discordance between FFR and iFR occurs in up to 20% of cases, which should not be a matter...
Previous studies in which revascularization was guided by angiography alone found that coronary angioplasty does not improve outcomes compared with optimal medical treatment in patients with chronic stable angina. The FAME 2 trial (Fractional Flow Reserve Versus Angiography for Multivessel Evaluation) compared angioplasty guided by fractional flow reserve (FFR) with optimal medical treatment, arriving to...
In the US, more than 4 million patients with chronic stable angina are looking to rule out heart disease. Most undergo functional diagnostic studies that might lead to invasive coronary angiography followed by revascularization. CT has become an alternative diagnostic tool thanks to its precision to rule out heart disease (negative predictive value between 97...
In patients with 3-vessel disease, surgery obtained better outcomes than angioplasty, according to results from the SYNTAX and FREEDOM trials, which used first-generation drug-eluting stents. Even in the BEST trial, which used new-generation stents, surgery still offered far better outcomes. Nobody is surprised by the fact that, whenever angioplasty evolves due to a new device...
Fractional flow reserve (FFR) has proven to be superior to angiography as a guide to revascularization due to a significant reduction in the number of both long-term and short-term events. Furthermore, deferring treatment of lesions without evidence of ischemia offers an excellent prognosis. Many studies including mostly stable patients showed a significant degree (as high...
Courtesy of the SBHCI. About 50% of patients admitted with acute ST-segment elevation myocardial infarction also present lesions in another vessel. Whether to treat these or not, and the optimal moment to treat non-culprit infarction-related vessels are still controversial issues. The COMPARE-ACUTE study was recently published and showed that fractional flow reserve (FFR)-guided complete...
The safety of physiology-based coronary revascularisation has been supported by evidence for years now. DEFER (1998-2001) was one of the first related studies. However, major changes in device and medical treatment safety and efficacy have taken place since then. This could affect clinical results, particularly as regards acute coronary syndromes (ACS). Several studies have cast...
Using fractional flow reserve (FFR) to guide revascularization of all functionally significant lesions in the setting of acute coronary syndrome appears to improve outcomes over treating only the culprit artery, according to the Compare-Acute trial. This study, conducted at 24 centers in Europe and Asia, enrolled 885 patients who were stable following successful primary angioplasty and...