Fractional Flow Reserve is a medicalprocess used in cardiac catheterization to evaluate pressure variations across asingle coronary artery in order to detect the possibility that the stenosisblocks oxygen delivery to the ventricle muscle. Unlike other methods ofarterial pressure detection, which are time-consuming and expensive, FastingFluid Reserve does not need to be repeated for an extended period of time. Theprocedure has been well-used for more than 40 years and is one of the mostaccurate procedures available. In addition, unlike other tests used to detectatherosclerotic heart diseases, such as ultrasound, magnetic resonance imaging(MRI), or blood flow catheterization, Fasting Fluid Reserve can be performed inless than one minute.
There are four steps in the processof fractionalflow reserve. First, the patient is positioned for the procedure. Next,the patient lies on a table that is electrically heated to produce localizedwarmth, and then the patient's body is immersed in water with a low salineconcentration. After an initial period of rest, the patient is gently agitatedusing a ventilator to generate body waves that are picked up by the medicalsensor. Second, the medical sensor receives signals from thevascular-interventional method known as stent placement. Stent placement isperformed after the fractional flow reserve has been generated. Once started,the patient's body relaxes to facilitate the passage of the stent. During thisprocess, the normal maximum flow is maintained. Third, the normal maximum flowis then measured. The result is the amount of arterial dilatation. Based on theresult, the arterial pressure is calculated. Fourth, a medication such as abeta-blocker or a nitric oxide booster is given to prevent shock during theprocedure. The monitoring system measures the pressure of the blood flowing tothe heart by means of the cardiac monitor.
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