Pump Up the Volume (1990) Teenage angst finds a new voice in this drama. By day, Mark Hunter (Christian Slater) is a quiet, studious student at an ordinary suburban high school in Arizona.
In contrast, fractional flow reserve (FFR) is a physiologic measure of coronary stenosis expressing the amount of coronary flow still attainable despite the presence of a stenosis, but it requires an invasive procedure. Also, fractional flow reserve (FFR) can detect pressure decrease at the bridge distally.
Fractional flow reserve is defined as the pressure after (distal to) a stenosis relative to the pressure before the stenosis. The result is an absolute number; an FFR of 0.80 means that a given stenosis causes a 20% drop in blood pressure.