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CCCSymposium 2014. Debate #4: CTO Revascularization. Most CTO Should be Opened: Samin K Sharma, MD Only Limited CTO Should be Opened: Carlo Di Mario, MD. Samin K Sharma, MD, FACC, FSCAI Director Clinical & Interventional Cardiology Zena and Michael a Weiner Professor of Medicine
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CCCSymposium 2014 Debate #4: CTO Revascularization Most CTO Should be Opened: Samin K Sharma, MD Only Limited CTO Should be Opened: Carlo Di Mario, MD Samin K Sharma, MD, FACC, FSCAIDirector Clinical & Interventional CardiologyZena and Michael a Weiner Professor of Medicine Mount Sinai Hospital, NY
I will make my point for; Most CTOs Should be Opened
Chronic Total Occlusion (CTO) Presence of CTO in CAD Imparts Adverse Prognosis
Impact of Completeness of PCI Revascularization on Long-Term Outcomes in the Stent Era HRs for Mortality for Various Subgroups of Incomplete Revascularization Hannah, Holmes, King, Sharma et al. Circulation 2006;113:2406
Incomplete Revascularization in the Era of DES: NY State Database Report Conclusion: Pts with ≥2 IR vessels with a CTO, have the worst long-term prognosis and greater need for CABG or re-PCI Hannan, Sharma et al. JACC Cardio Interv 2009;2:17
Effect of a Concurrent CTO on Long-Term Mortality and LVEF in Pts After Primary PCI in AMI 3277 STEMI pts 1997-05: SVD 65%, MVD 22%, MVD + CTO 13% Landmark Survival Analysis Endpoint: Survival at 5 yrs, LVEF at 12 mo (median F/U 3.1 yrs) Claessen et al. JACC Cardio Interv 2009;2:1128.
Temporal Trends in Cumulative Angiographic Success Rates and Major Procedural Complication Rates 80% 0.5% Patel et al., JACC Cardiovasc Interv 2013;6:128
Incidence of Procedural Complications in Successful vs. Unsuccessful CTO PCI Complications Successful Unsuccessful p value Patel et al., JACC Cardiovasc Interv 2013;6:128
CTO: Anatomic Descriptors of Procedural Success In the current ERA; Severe calcification
Because successful CTO recanalization may result in Angina/Ischemia reliefFreedom from subsequent CABGImproved LV functionImprovement in event-free survival Chronic Total Occlusion (CTO) Why Bother to do PCI? Presence of CTO in CAD Imparts Adverse Prognosis
Chronic Total Occlusion (CTO) CTO Recanalization and Angina Relief
TOAST-GISE1 Year Clinical Status of Complication Free Patients Olivari Z et al, J Am Coll Cardiol 2003;41:1672
Meta-Analysis of CTO Outcomes 13 Observational Studies, 7288 patients weighted averaged follow-up 6 years Joyal et al., Am Heart J 2010;160:179.
Evaluation of LV Function 3-Yrs after Percutaneous Recanalization of CTO Changes in LV Volume Indexes and EF between Baseline and 3-Yr FU Measured Using Magnetic Resonance Imaging (N=21) 86 63 60 78 35 30 Mean ejection fraction improved slightly, but end-systolic and end-diastolic volume indexes decreased significantly. Kirschbaum S et al, Am J Cardiol 2008;101:179
MRI Predicts LV EF & Wall Motion Improvement with CTO Revascularization (N=21) with prior MI SWT at Baseline (n=21) SWT 5 mths post Stent Implantation P=ns P<0.001 SWT 3 yrs post stent Implantation P<0.05 90 P=ns 80 P<0.05 70 P<0.05 60 P<0.001 50 P<0.05 40 P<0.05 Segmental wall thickening (%) P=ns 30 P=ns 20 P=ns 10 0 -10 -20 <25% 25-75% >75% Remote Transmural extent of infarction Kirschbaum et al, Am J Cardiol 2008;101:179
Effect of Successful vs. Failed CTO PCI in All-Cause Mortality During Long-Term Follow-up Moses et al., JACC Cardio Interv 2012;5:389
Successful Recanalization of CTO Associated with Improved Long-Term Survival Jones et al., JACC Cardio Interv 2012;5:380
Advanced Techniques for Chronic Total OcclusionJapanese Specialized Technique • Anchor balloon technique • Mother-Child catheter technique • Parallel wire • IVUS guidance • Retrograde approach
Retrograde Wire Technique for Chronic Total Occlusion Recanalization Four Patterns of Success in Retrograde CTO Recanalization Sumitsuji et al. J Am Coll Cardiol Intv 2011;4:941.
Increased Use of Retrograde Approach and Technical Success Rate Over Time 2006 2007 2008 2009 2010 2011 ≈35% % Michael et al., Am J Cardiol 2013;112:488
ACCF/SCAI/STS/AATS/AHA/ASNC 2012Appropriateness Criteria for Coronary Revascularization Chronic Total Occlusions: Indications for PCI Patel et al. JACC 2012;53:530-553
Chronic Total Occlusions I IIa IIb III PCI of a CTO in patients with appropriate clinical indications and suitable anatomy is reasonable when performed by operators with appropriate expertise B
Fundamental Wire Technique and Current Strategy for Chronic Total Occlusion PCI Procedural Steps of Current CTO-PCI Cotralateral Dual Injection CTO - PCI Single Wire Technique Antegrade approach x2 Parallel Wire Technique Retrograde approach (ostial) Retrograde Wire Cross Kissing Wire Cross IVUS guide re-entry CART Reverse CART Success Failure
Planned 2nd (18%) or 3rd (8%) attempt Retrograde technique Asahi wires Procedural Success of CTO PCI at MSH 93 86 78 68 EXPERT CTO US Trial: 90+ success % 665 806 782 397 2003-2005 2006-2008 2009-10 2011-12
Conclusions:Rationale for CTO Recanalization in ALL • Presence of a CTO imparts adverse prognosis. • Non randomized data support improved overall CV outcomes (including mortality) with successful CTO procedures. A randomized trial will be needed to establish the PCI efficacy in CTO pts. • Therefore developing technical skills (dedicated centers and dedicated Interventionalists) is essential to tackle this “last frontier of Interventional Cardiology” to improve overall outcomes of our complex CAD pts. • KEY to better CTO outcomes is successful recanalization