Measurement Gray Zone of Fractional Flow Reserve
نویسندگان
چکیده
منابع مشابه
A black and white response to the "gray zone" for fractional flow reserve measurements.
Petraco et al. (1) raise a universal issue that affects all clinical tests. Every binary cutoff produces cases just on either side of the threshold for whom a repeat measurement might alter the decision, no matter how accurate the test or how small its variability. By analogy to a Gaussian distribution of observations about the true value, the critical measure for any diagnostic test remains th...
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The shortcomings of coronary arteriography to assess the physiological significance of coronary stenoses have been recognised for decades ; therefore, the importance of additional physiological techniques is beyond doubt. One of the currently available physiological techniques is coronary pressure measurement, which has emerged over the past few years as a major step forward in the invasive ass...
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BACKGROUND A strategy of deferred percutaneous coronary intervention for coronary stenosis with fractional flow reserve (FFR) 0.75-0.80, termed the gray zone, remains a matter of debate. The aim of this study was to assess the safety of deferring revascularization for patients with FFR 0.75-0.80 compared with those with FFR >0.80. METHODS AND RESULTS We assessed 3-year clinical outcome in 150...
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Traditionally, coronary artery disease was assessed using coronary angiographic guidance. Significant lesions were determined by the coronary angiographer. However, interobserver variability showed a significant limitation of interpretation of coronary angiography. Stent deployment and apposition were also evaluated based on angiographic appearance only. Risk factors for stent thrombosis and in...
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We present the case of a 44 year-old man referred for coronary angiography with a history of coronary artery disease. Following administration of intra-coronary adenosine for fractional flow reserve (FFR) assessment, the patient developed atrial fibrillation (AF). While well described during non-invasive stress testing, this is the first description in the literature of AF following adenosi...
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ژورنال
عنوان ژورنال: JACC: Cardiovascular Interventions
سال: 2014
ISSN: 1936-8798
DOI: 10.1016/j.jcin.2013.05.028