FFR with St. Jude System

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Muhammad Naveed Saeed

Cath Lab Tech.January 7, 2016

Fractional flow reserve

Technique used in coronary catheterization  to measure pressure differences across a coronary artery stenosis (narrowing, usually due to atherosclerosis) to determine the likelihood that the stenosis impedes myocardial ischemia.

Fractional flow reserve

FFR Limitation & Disadvantage FFR assess of lesion

severity.

FFR invasive test and allows real-time estimation of the effects of a narrowed vessel.

No plaque morphology information.

physical exercise or some intravenous medication is to increase the workload and oxygen demand of the heart muscle, and ischemia is detected using ECG  changes or Nuclear imaging.

• Adenosine: 6mg/500cc NS (12mcg/cc)

• IC boluses:○ –60 mcg (5 cc)○ –96 mcg (8 cc)○ –120 mcg (10 cc)

• IV drip 140 mcg/Kg/Min

Microvascular hyperemia DrugsAdenosin

• http://www.cathlabdigest.com/article/return-ic-adenosine-ffr-history-dose-technique Issue number:  volume 23 - issue 12 - December 2015

Fractional flow reserve

Significant <0.80

Grey Scale 0.8

Non Significant > 0.8

FFR with ILUMIEN

St. Jude. Medical