CLINICAL RESEARCH: INTERVENTIONAL CARDIOLOGY
Percutaneous Coronary Intervention of Functionally Nonsignificant Stenosis5-Year Follow-Up of the DEFER Study
Nico H.J. Pijls, MD, PhD*,*,
Pepijn van Schaardenburgh, MD*,
Ganesh Manoharan, MD ,
Eric Boersma, PhD ,
Jan-Willem Bech, MD, PhD*,
Marcel van't Veer, MSc*,
Frits Bär, MD, PhD ,
Jan Hoorntje, MD, PhD||,
Jacques Koolen, MD, PhD*,
William Wijns, MD, PhD and
Bernard de Bruyne, MD, PhD
* Catharina Hospital Eindhoven, Eindhoven, the Netherlands
Cardiovascular Center Aalst, Aalst, Belgium
Thoraxcentrum Rotterdam, Rotterdam, the Netherlands
Academic Hospital Maastricht, Maastricht, the Netherlands
|| Isala Clinics Zwolle, Zwolle, the Netherlands.
Manuscript received October 4, 2006;
revised manuscript received January 29, 2007,
accepted January 30, 2007.
* Reprint requests and correspondence: Dr. Nico H. J. Pijls, Catharina Hospital, Department of Cardiology, Michelangelo Avenue 2, P.O. Box 1350, 5602 ZA Eindhoven, the Netherlands. (Email: nico.pijls{at}inter.nl.net).
Objectives: The purpose of this study was to investigate the appropriateness of stenting a functionally nonsignificant stenosis.
Background: Percutaneous coronary intervention (PCI) of an intermediate stenosis without evidence of ischemia is often performed, but its benefit is unproven. Coronary pressure-derived fractional flow reserve (FFR) is an invasive index used to identify a stenosis responsible for reversible ischemia.
Methods: In 325 patients scheduled for PCI of an intermediate stenosis, FFR was measured just before the planned intervention. If FFR was 0.75, patients were randomly assigned to deferral (Defer group; n = 91) or performance (Perform group; n = 90) of PCI. If FFR was <0.75, PCI was performed as planned (Reference group; n = 144). Clinical follow-up was 5 years.
Results: There were no differences in baseline clinical characteristics between the 3 groups. Complete follow-up was obtained in 98% of the patients. Event-free survival was not different between the Defer and Perform groups (80% and 73%, respectively; p = 0.52), but was significantly worse in the Reference group (63%; p = 0.03). The composite rate of cardiac death and acute myocardial infarction in the Defer, Perform, and Reference groups was 3.3%, 7.9%, and 15.7%, respectively (p = 0.21 for Defer vs. Perform group; p = 0.003 for the Reference vs. both other groups). The percentage of patients free from chest pain at follow-up was not different between the Defer and Perform groups.
Conclusions: Five-year outcome after deferral of PCI of an intermediate coronary stenosis based on FFR 0.75 is excellent. The risk of cardiac death or myocardial infarction related to this stenosis is <1% per year and not decreased by stenting.
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Abbreviations and Acronyms
| | AMI = acute myocardial infarction | | FFR = fractional flow reserve | | PCI = percutaneous coronary intervention | | SPECT = single-photon emission computed tomography |
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M. Hamilos, O. Muller, T. Cuisset, A. Ntalianis, G. Chlouverakis, G. Sarno, O. Nelis, J. Bartunek, M. Vanderheyden, E. Wyffels, et al.
Long-Term Clinical Outcome After Fractional Flow Reserve-Guided Treatment in Patients With Angiographically Equivocal Left Main Coronary Artery Stenosis
Circulation,
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120(15):
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[Abstract]
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W. Wijns and P. Kolh
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K. L. Gould
Does Coronary Flow Trump Coronary Anatomy?
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G. Sarno, I. Decraemer, P. K. Vanhoenacker, B. De Bruyne, M. Hamilos, T. Cuisset, E. Wyffels, J. Bartunek, G. R. Heyndrickx, and W. Wijns
On the Inappropriateness of Noninvasive Multidetector Computed Tomography Coronary Angiography to Trigger Coronary Revascularization: A Comparison With Invasive Angiography
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[Abstract]
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R. C. Hendel
Is Computed Tomography Coronary Angiography the Most Accurate and Effective Noninvasive Imaging Tool to Evaluate Patients With Acute Chest Pain in the Emergency Department?: CT Coronary Angiography Is the Most Accurate and Effective Noninvasive Imaging Tool for Evaluating Patients Presenting With Chest Pain to the Emergency Department: Antagonist Viewpoint
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C. Doesch, A. Seeger, J. Doering, C. Herdeg, C. Burgstahler, C. D. Claussen, M. Gawaz, S. Miller, and A. E. May
Risk Stratification by Adenosine Stress Cardiac Magnetic Resonance in Patients With Coronary Artery Stenoses of Intermediate Angiographic Severity
J. Am. Coll. Cardiol. Img.,
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E. Nagel
Taking the Last Hurdles: Magnetic Resonance Myocardial Perfusion Imaging
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M. A. Leesar
Baseline Fractional Flow Reserve and Stent Diameter Predict Event Rates After Stenting: A Further Step, But Still Much to Learn
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G. A. Lin, D. J. Malenka, and R. F. Redberg
Documenting Ischemia Prior to Elective Percutaneous Coronary Intervention--Reply
JAMA,
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C. Di Mario, G. R. Heyndrickx, F. Prati, and N. H.J. Pijls
CHAPTER 8 Invasive Imaging and Haemodynamics
ESC Textbook of Cardiovascular Medicine,
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[Abstract]
[Full Text]
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D. G. Katritsis and B. Meier
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M. J. Kern
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A. J. Kirtane and D. J. Cohen
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W. B. Meijboom, C. A.G. Van Mieghem, N. van Pelt, A. Weustink, F. Pugliese, N. R. Mollet, E. Boersma, E. Regar, R. J. van Geuns, P. J. de Jaegere, et al.
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B De Bruyne and J Sarma
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Heart,
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S. R. Dixon, C. L. Grines, and W. W. O'Neill
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U. C. Rangasetty and C. Y. Lui
Fractional Flow Reserve-Guided Intervention of Angiographically Nonsignificant Coronary Stenoses
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N. H.J. Pijls, P. van Schaardenburg, G. Manoharan, E. Boersma, J.-W. Bech, M. van't Veer, F. Bar, J. Hoorntje, J. Koolen, W. Wijns, et al.
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E. S. Brilakis and P. B. Berger
Treatment of coronary bifurcations: might less be more?
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A. N. DeMaria, J. J. Bax, O. Ben-Yehuda, P. Clopton, G. K. Feld, G. S. Ginsburg, B. H. Greenberg, J. D. Knoke, W. Y.W. Lew, J. A.C. Lima, et al.
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K. L. Gould
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