Chest Pain Clinical Trial
Official title:
Opsens Optowire for Fractional Flow Reserve - The O2 Pilot Study
The purpose of this study is to assess the usability and safety of the Opsens OptoWire and Optomonitor in measuring fractional flow reserve (FFR) in patients with coronary artery disease who are undergoing a coronary angiogram.
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 value lower than
0.75 - 0.80 is generally considered to be associated with myocardial ischemia (MI).
FFR is easily measured during routine coronary angiography by using a pressure wire to
calculate the ratio between coronary pressure distal to a coronary artery stenosis and
aortic pressure under conditions of maximum myocardial hyperemia. This ratio represents the
potential decrease in coronary flow distal to the coronary stenosis.
Over the past decade, FFR measurement has been increasingly used in cardiac catheterization
laboratories. It provides a quantitative assessment of the functional severity of a coronary
artery stenosis identified during coronary angiography and cardiac catheterization.
Opsens, Inc. has developed a new pressure wire for use in determining FFR in coronary
arteries; the OptoWire. The OptoWire is an instrumented guide wire with a fiber optic
pressure sensor mounted 3.5 cm proximal to the tip. The Optowire measures blood pressure
during diagnostic and/or interventional procedures when used in combination with the
OptoMonitor.
The O2 study is a pilot study which aims to provide preliminary experience in human patients
with coronary artery disease. The study data will also be used as part of design validation.
The O2 study is a prospective single arm study designed to assess the usability,
functionality, and safety of the Optowire and Optomonitor in patients.
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Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic
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