Abstract
When performing coronary angiography, diagnostic catheter intubation of the ostium often leads to a damping of the pressure tracing. Although catheter induced coronary spasm is suggested as the main mechanism of damping, atherosclerotic ostial lesion may be the one of the differential diagnoses. The purpose of this retrospective study is to find out the risk factors of ostial lesion in patients showing pressure damping during coronary angiography.
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