FFR


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FFR

Abbreviation for:
field-free region (see there)

reserve

(re-zerv') [L. reservare, to keep back]
1. Something held back for future use.
2. Self-control of one's feelings and thoughts.

alkali reserve

Alkaline reserve.

alkaline reserve

The amount of base in the blood, principally bicarbonates, available for neutralization of fixed acids (acetoacetate, ß-hydroxybutyrate, and lactate). A fall in alkaline reserve is called acidosis; a rise, alkalosis.
Synonym: alkali reserve

cardiac reserve

The ability of the heart to increase cardiac output to meet the needs of increased energy output.

coronary flow reserve

The ratio of the blood flow in the coronary arteries when they are at rest to their blood flow when they are maximally stimulated or dilated.
See: coronary blood flow

fractional flow reserve

Abbreviation: FFR
The ratio of the blood pressure in the furthest reaches of a coronary artery divided by the blood pressure in the aorta. The ratio is determined when the arteries are maximally vasodilated. The FFR determines the flow-limiting significance of a coronary artery stenosis. When the pressure in the distal portion of a healthy coronary artery is equal to the pressure in the aorta, the FFR is 1.0. Arteries with FFR less than 0.75 have large enough obstructions to cause myocardial ischemia.

ovarian reserve

The number of remaining oocytes or follicles in the ovaries. The number typically falls with increasing age. It also declines as a result of some types of chemotherapy. Women with very limited ovarian reserves may have difficulty conceiving a child without assisted reproductive techniques.

fractional flow reserve

Abbreviation: FFR
The ratio of the blood pressure in the furthest reaches of a coronary artery divided by the blood pressure in the aorta. The ratio is determined when the arteries are maximally vasodilated. The FFR determines the flow-limiting significance of a coronary artery stenosis. When the pressure in the distal portion of a healthy coronary artery is equal to the pressure in the aorta, the FFR is 1.0. Arteries with FFR less than 0.75 have large enough obstructions to cause myocardial ischemia.
See also: reserve

FFR

Abbrev. for Fellow of the Faculty of Radiologists.
References in periodicals archive ?
is a pioneering interventional and diagnostic technology company with a portfolio of advanced products, including the world's first Rapid Exchange FFR and High Definition IVUS systems.
The work firstly derives a mathematical formulation of network resource partitioning among cell which is emphasize the importance of the fraction of radius in center region a and the fraction of the system bandwidth p allotted for center region based on FFR method.
FFR is bias introduced by management into information reported by the firm.
Hodgson commented, "IVUS and FFR play an invaluable role in modern-day PCI.
The upper part of Table 1 presents results for the log levels of IP, the CPI, and a commodity price index, along with results for the natural level of the effective FFR.
Angiography in Multivessel Evaluation) trial compared outcomes for patients whose treatment was guided by FFR to those whose treatment was guided only by angiography using St.
The introduction of the RXi Rapid Exchange FFR System, the first system of its kind in the world, is a major step forward in the transformation of ACIST," said Tom Morizio, President and COO, ACIST Medical Systems.
FFR uses a small sensor on the tip of the wire (commonly a transducer) to measure pressure, temperature and flow to determine the exact severity of the lesion.
The threat of a European Cup boycott by the top French clubs disappeared after a meeting between them and the FFR in Toulouse.
FFR specifically identifies which coronary narrowings are responsible for obstructing blood flow to a patient's heart muscle, and is measured using PressureWire FFR measurement technology from St.
Main Features: Construction Class D rugby changing rooms of the FFR in Soissons (02).
These preliminary results show that the prior observations can be replicated prospectively, and that a Hybrid iFR/FFR approach can provide a greater than 90% agreement with FFR while saving the use of hyperemic agent in more than half of patients.