A 51 year male patient came with complain of chest pain on exertion. Patient taken for angiogram found to have two vessel LAD and LCX
The following test is done for
[A] Critical Stenosis of LCX
[B] Significant Proximal RCA Disease
[C] Angiographically intermediate LCX lesion
[D] Myocardial bridging of Proximal LCX
Fractional flow reserve (FFR) measurement NOT intended to be done in case of
[A] Identify the precise location of a coronary lesion
[B] Identify appropriate culprit lesion in multivessel coronary artery disease
[C] Angiographically intermediate LCX lesion
[D] Chronic total occlusion
- Fractional flow reserve (FFR) measurement involves determining the ratio between the maximum achievable blood flow in a diseased coronary artery and the theoretical maximum flow in a normal coronary artery.
- An FFR of 1.0 is widely accepted as normal.
- An FFR lower than 0.75-0.80 is generally considered to be associated with myocardial ischemia (MI)
- It provides a quantitative assessment of the functional severity of a coronary artery stenosis identified during coronary angiography and cardiac catheterization.
Indications
Indications for FFR measurement are as follows:
- To determine the physiologic and hemodynamic significance of an angiographically intermediate coronary stenosis
- To identify appropriate culprit lesion(s) in multivessel coronary artery disease (CAD)
- To measure the functional importance of stenosis in the presence of distal collateral flow
- To identify the precise location of a coronary lesion when the angiographic image is unclear
Note that this procedure is not intended for use in the setting of a total vessel occlusion.
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