Main Branch Versus Side Branch Ostial Lesion
The investigators studied the relations between coronary angiography (CAG), intravascular ultrasound (IVUS) and fractional flow reserve (FFR) in coronary ostial lesions.
|Study Design:||Observational Model: Cohort
Time Perspective: Retrospective
|Official Title:||Relationship Between Fractional Flow Reserve and Coronary Angiography/Intravascular Ultrasound Parameters in Ostial Lesions: Major Coronary Ostial Lesions Versus Side Branch Ostial Lesions|
- lumen area [ Time Frame: 1 day ] [ Designated as safety issue: No ]lumen area at ostial lesion
- angiographic stenosis, % plaque area [ Time Frame: 1 day ] [ Designated as safety issue: No ]angiographic and intravascular ultrasound parameters at ostial lesions of each major branch and side branch.
|Study Start Date:||June 2010|
|Study Completion Date:||June 2011|
|Primary Completion Date:||June 2011 (Final data collection date for primary outcome measure)|
ostial lesion will be evaluated by IVUS and FFR
Device: Fractional flow reserve
Fractional flow reserve measured by pressure wire
Other Name: Radi Pressure Wire(Radi Medical Systems, Uppsala, Sweden)Device: IVUS
:IVUS was performed in a standard fashion using an automated motorized pullback system (0.5mm/s) with commercially available imaging catheter
Other Name: iLab® Ultrasound Imaging System(Boston Scientific/SCIMED, Minneapolis, MN, USA)
Angiographic evaluation for ostial lesions is reported to be inaccurate in the assessment of the functional and clinical significance of a lesion. The investigators studied the relations between coronary angiography (CAG), intravascular ultrasound (IVUS) and fractional flow reserve (FFR) in coronary ostial lesions.