Comparison between fractional flow reserve and visual assessment by multiple observers in

Objectives: Our aim was to evaluate whether more thanone observer or fractional flow reserve has the same resultsin assessing coronary lesion severity in intermediatelesions.Methods: Our hospital’s database was searched for fractionalflow reserve procedures and then these patient’slesions were assessed visually by three experienced interventionalcardiologist.Results: 8 of 46 patients were (17.4%) female and 38 of 46were (82,6%) male. Average age was 61±11 years (Male:60±11 / Female: 70±7 years). One observer could onlydetect 66.7% of severe lesions and 76.2% of non-severelesions. When two observers agreed about lesion severity,true detection of severe lesions was (max) 76.7%, andtrue detection of non-severe lesions was (max) 66.7%, soa decrease in true detection of non-severe lesions wasobserved. When one of the observers called a lesion “severe”and the lesion was assumed as “severe”, detectionof a severe lesion was 83.3% (p=0.017); if all of the observersagreed that the lesion was “non-severe” then truedetection of a non-severe lesion was 90.5% (p