title: Outcomes of percutaneous coronary intervention in intermediate coronary artery disease: fractional flow reserve-guided versus intravascular ultrasound-guided.
abstract: OBJECTIVE
  This study sought to evaluate the long-term clinical outcomes of a fractional flow reserve (FFR)-guided percutaneous coronary intervention (PCI) strategy compared with intravascular ultrasound (IVUS)-guided PCI for intermediate coronary lesions.
  
  
  BACKGROUND
  Both FFR- and IVUS-guided PCI strategies have been reported to be safe and effective in intermediate coronary lesions.
  
  
  METHODS
  The study included 167 consecutive patients, with intermediate coronary lesions evaluated by FFR or IVUS (FFR-guided, 83 lesions vs. IVUS-guided, 94 lesions). Cutoff value of FFR in FFR-guided PCI was 0.80, whereas that for minimal lumen cross sectional area in IVUS-guided PCI was 4.0 mm(2). The primary outcome was defined as a composite of major adverse cardiac events including death, myocardial infarction, and ischemia-driven target vessel revascularization at 1 year after the index procedure.
  
  
  RESULTS
  Baseline percent diameter stenosis and lesion length were similar in both groups (51 +/- 8% and 24 +/- 12 mm in the FFR group vs. 52 +/- 8% and 24 +/- 13 mm in the IVUS group, respectively). However, the IVUS-guided group underwent revascularization therapy significantly more often (91.5% vs. 33.7%, p < 0.001). No significant difference was found in major adverse cardiac event rates between the 2 groups (3.6% in FFR-guided PCI vs. 3.2% in IVUS-guided PCI). Independent predictors for performing intervention were guiding device: FFR versus IVUS (relative risk [RR]: 0.02); left anterior descending coronary artery versus non-left anterior descending coronary artery disease (RR: 5.60); and multi- versus single-vessel disease (RR: 3.28).
  
  
  CONCLUSIONS
  Both FFR- and IVUS-guided PCI strategy for intermediate coronary artery disease were associated with favorable outcomes. The FFR-guided PCI reduces the need for revascularization of many of these lesions.
authors: Keimyung University Dongsan Medical Center, Daegu, Korea.
authors: Chang-Wook
authors: CW
authors: Nam
authors: Hyuck-Jun
authors: HJ
authors: Yoon
authors: Yun-Kyeong
authors: YK
authors: Cho
authors: Hyoung-Seob
authors: HS
authors: Park
authors: Hyungseop
authors: H
authors: Kim
authors: Seung-Ho
authors: SH
authors: Hur
authors: Yoon-Nyun
authors: YN
authors: Kim
authors: In-Sung
authors: IS
authors: Chung
authors: Bon-Kwon
authors: BK
authors: Koo
authors: Seung-Jae
authors: SJ
authors: Tahk
authors: William F
authors: WF
authors: Fearon
authors: Kwon-Bae
authors: KB
authors: Kim
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000009:adverse effects / Q000295:instrumentation / Q000401:mortality; D016009:Chi-Square Distribution; D017023:Coronary Angiography; D023921:Coronary Stenosis / Q000000981:diagnostic imaging / Q000401:mortality / Q000503:physiopathology / Q000628:therapy*; D005260:Female; D053805:Fractional Flow Reserve, Myocardial; D006801:Humans; D053208:Kaplan-Meier Estimate; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000209:etiology; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D012720:Severity of Illness Index; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional