101
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Stone GW, Reifart NJ, Moussa I, Hoye A, Cox DA, Colombo A, Baim DS, Teirstein PS, Strauss BH, Selmon M, Mintz GS, Katoh O, Mitsudo K, Suzuki T, Tamai H, Grube E, Cannon LA, Kandzari DE, Reisman M, Schwartz RS, Bailey S, Dangas G, Mehran R, Abizaid A, Moses JW, Leon MB, Serruys PW. Percutaneous recanalization of chronically occluded coronary arteries: a consensus document: part II. Circulation 2006; 112:2530-7. [PMID: 16230504 DOI: 10.1161/circulationaha.105.583716] [Citation(s) in RCA: 213] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Gregg W Stone
- Columbia University Medical Center, The Cardiovascular Research Foundation, New York, NY 10022, USA.
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102
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Agostoni P, Valgimigli M, Biondi-Zoccai GGL, Abbate A, Garcia Garcia HM, Anselmi M, Turri M, McFadden EP, Vassanelli C, Serruys PW, Colombo A. Clinical effectiveness of bare-metal stenting compared with balloon angioplasty in total coronary occlusions: insights from a systematic overview of randomized trials in light of the drug-eluting stent era. Am Heart J 2006; 151:682-9. [PMID: 16504632 DOI: 10.1016/j.ahj.2005.05.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2005] [Accepted: 05/02/2005] [Indexed: 02/08/2023]
Abstract
BACKGROUND We sought to compare, using meta-analytic techniques, bare-metal stent versus balloon angioplasty in the percutaneous treatment of total coronary occlusions by means of a quantitative systematic review and to indicate new avenues for future treatments. METHODS MEDLINE and CENTRAL were searched. Inclusion criteria were random allocation, prospective comparison, and intention to treat. Random-effect odds ratios (ORs) with 95% confidence intervals (CIs) for death, myocardial infarction (MI), repeated revascularization, major adverse cardiac events (MACE), and angiographic restenosis and reocclusion were computed. RESULTS Nine trials (1409 patients) were included. Death rate was not different in the 2 groups, 0.4% after stenting versus 0.7% after balloon angioplasty (OR 0.72, 95% CI 0.21-2.50). MI rate was significantly increased after stenting (6.7% vs 3.4%, OR 2.06, 95% CI 1.22-3.46), mainly because of a higher rate of periprocedural non-Q-wave MI. By contrast, the risk of repeated revascularization was significantly reduced by stenting (17% vs 32%, OR 0.41, 95% CI 0.31-0.53). This yielded to an overall reduction in the rate of MACE after stenting (23.2% vs 35.4%, OR 0.49, 95% CI 0.36-0.68). Angiographic restenosis and reocclusion were also decreased by stent (41.1% vs 60.9%, OR 0.36, 95% CI 0.23-0.57; 6.8% vs 16%, OR 0.36, 95% CI 0.22-0.59, respectively). CONCLUSIONS In total coronary occlusions, stenting yields an important benefit over balloon angioplasty in reduction of MACE, repeated revascularizations, and angiographic restenosis and reocclusion. However, these events remain frequent. Moreover, the finding of an increased rate of periprocedural minor myocardial damage after stenting casts caution. New strategies aimed to reduce the need of repeated revascularizations and periprocedural MIs should be further investigated.
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103
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Abstract
Chronic total occlusions are typically difficult to recannalize especially when adverse angiographic morphologies are identified. We describe a case of chronic total occlusion crossing retrograde through the supplying collaterals followed by successful angioplasty and stenting.
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Affiliation(s)
- Sridhar Sampath Kumar
- Division of Cardiology, Long Island Jewish Medical Center, North Shore University Hospital, Manhasset, NY 11040, USA
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104
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Arslan U, Balcioglu AS, Timurkaynak T, Cengel A. The Clinical Outcomes of Percutaneous Coronary Intervention in Chronic Total Coronary Occlusion. Int Heart J 2006; 47:811-9. [PMID: 17268116 DOI: 10.1536/ihj.47.811] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The objective of the present study was to investigate the effects of percutaneous coronary intervention (PCI) on the development of major cardiac events in patients with chronic total coronary occlusion (CTO). Patients determined to have CTO in at least one coronary artery with stable coronary artery disease were retrospectively enrolled in this study. Among 262 patients (197 males, 65 females), PCI was attempted in 172 while 90 were followed-up conservatively because they had unsuitable angiographic lesions for PCI. PCI was successful in 117 (68.0%) patients. Thirty of the remaining 55 patients, who had multivessel coronary artery disease, underwent coronary artery bypass surgery. The remaining 25 patients were added to the conservative group. Mean follow-up time was 32 +/- 12 months. Although a slight degree of development of non-ST elevation acute coronary syndrome was observed in the PCI group (34 [29.1%] versus 21 [18.3%] patients, P = 0.053) mostly because of restenosis (14 of 34 patients, [41.2%]), a significant mortality benefit was observed in patients who underwent successful PCI (17 [14.5%] versus 32 [27.8%] patients, P = 0.013). This benefit was mainly due to the lower number of deaths from heart failure (7 [6.0%] versus 17 [14.8%] patients, P = 0.028) and sudden death (6 [5.1%] versus 12 [10.4%] patients, P = 0.131). In conclusion, despite the low success rate and high restenosis rate of PCI for CTO, it is worthwhile to deal with the revascularization of a CTO for its mortality benefit.
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Affiliation(s)
- Ugur Arslan
- Department of Cardiology, Gazi University School of Medicine, Ankara, Turkey
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105
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Migliorini A, Moschi G, Vergara R, Parodi G, Carrabba N, Antoniucci D. Drug-eluting stent-supported percutaneous coronary intervention for chronic total coronary occlusion. Catheter Cardiovasc Interv 2006; 67:344-8. [PMID: 16489559 DOI: 10.1002/ccd.20623] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVES This study sought to determine the clinical and angiographic outcomes after drug-eluting stent (DES)-supported percutaneous coronary intervention (PCI) for chronic total coronary occlusion (CTO). BACKGROUND There are few data about the efficacy of DES-supported PCI for CTO. METHODS All consecutive patients who had a sirolimus-eluting stent or a paclitaxel-eluting stent implanted for CTO from December 2003 to December 2004 were analyzed. Clinical and angiographic outcomes of patients treated with DES were compared with a case-matched control group of patients treated with bare metal stents (BMS) in the 12 months before the routine use of DES. RESULTS Successful DES-supported PCI was performed in 92 patients and 104 CTO. The case-matched control group consisted of 26 patients and 27 CTO successfully treated with BMS. There were no differences between groups in baseline clinical and angiographic characteristics. Stent length in the DES group was higher as compared with that of BMS group (51+/-28 mm vs. 40+/-19 mm, P=0.073). The 6-month major adverse cardiac event (MACE) rate was lower in the DES group as compared with that of BMS group (9.8% vs. 23%, P=0.072). The angiographic follow-rate was 80% in the DES group and 81% in the BMS group. The 6-month restenosis rate was 19% in the DES group and 45% in the BMS group (P<0.001). By multivariate analysis, it was found that in the DES group, the only predictors of restenosis were stented segment length (OR 1.031, 95% CI 1.01-1.06, P=0.009) and a target vessel reference diameter<2.5 mm (OR 6.48, 95% CI 1.51-27.83, P=0.012), while the only predictor of MACE was stent length (OR 1.04, 95% CI 1.01-1.08, P=0.006). CONCLUSIONS DES implantation for CTO decreases the risk of mid-term restenosis and MACE. Small vessels and diffuse disease requiring the implantation of multiple stents and very long stents for full coverage of the target lesion are still associated with a relatively high risk of restenosis.
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106
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Bass TA. DES: Technique still matters. Catheter Cardiovasc Interv 2006; 67:10-1. [PMID: 16345051 DOI: 10.1002/ccd.20574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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107
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Hoye A, van Domburg RT, Sonnenschein K, Serruys PW. Percutaneous coronary intervention for chronic total occlusions: the Thoraxcenter experience 1992-2002. Eur Heart J 2005; 26:2630-6. [PMID: 16183693 DOI: 10.1093/eurheartj/ehi498] [Citation(s) in RCA: 251] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AIMS Chronic total occlusions (CTOs) are commonly found on diagnostic angiography, and there is some evidence from one study that successful percutaneous revascularization leads to an improvement in long-term survival rates. However, this study included patients treated for unstable angina with short-duration occlusion, and stent implantation was utilized in only 7%. We re-evaluated the long-term outcomes of a large consecutive series of patients with a CTO of >1-month duration treated at our centre, with stent implantation utilized in the majority. METHODS AND RESULTS All patients treated with percutaneous coronary intervention (PCI) between 1992 and 2002 were retrospectively identified from a dedicated database. A total of 874 consecutive patients were treated for 885 CTO lesions. Mean follow-up time was 4.47 +/- 2.69 years (median 4.10 years). Patients were evaluated for the occurrence of major adverse cardiac events (MACE) comprising death, acute myocardial infarction, and need for repeat revascularization with either coronary artery bypass surgery or PCI. Successful revascularization was achieved in 576 lesions (65.1%), in which stent implantation was used in 81.0%. At 30 days, the overall MACE rate was significantly lower in those patients with a successful recanalization (5.5 vs. 14.8%, P < 0.00001). At 5 years, survival was significantly higher in those patients with a successful revascularization (93.5 vs. 88.0%, P = 0.02). In addition, there was a significantly higher survival free of MACE (63.7 vs. 41.7%, P < 0.0001), with the majority of events reflecting the need for repeat intervention. Independent predictors for survival were successful revascularization, lower age, and the absence of diabetes mellitus and multivessel disease. CONCLUSION Successful percutaneous revascularization of a CTO leads to a significantly improved survival rate and a reduction in major adverse events at 5 years. Most events relate to the need for repeat reintervention, and the introduction of drug-eluting stents, with low-restenosis rates, encourages the development of technologies to improve recanalization success rates. However, failed recanalization may be associated acutely with an adverse event, and new technologies must focus on a safe approach to successful recanalization.
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Affiliation(s)
- Angela Hoye
- Department of Interventional Cardiology, Erasmus MC, Thoraxcenter Bd 404, Rotterdam, The Netherlands
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108
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López-Mínguez JR, Nogales JM, Morales A, Alonso R, González R, Merchán A. Clinical and angiographic follow-up in patients with Cypher or Taxus stents in populations with high percentage of trial-excluded lesions. CARDIOVASCULAR REVASCULARIZATION MEDICINE 2005; 6:92-8. [PMID: 16275604 DOI: 10.1016/j.carrev.2005.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2005] [Accepted: 07/17/2005] [Indexed: 11/26/2022]
Abstract
BACKGROUND Drug-eluting stents (DESs) are being used in real life in patients with complex lesions usually excluded from the published trials. It is reasonable to think that the results could be worse, and the performance may be different between DES when these complex lesions are included. METHODS AND MATERIAL To investigate this issue, we studied our first 82 patients with DES (54 patients with Cypher (C) and 28 patients with Taxus (T) (129 lesions, with 1.57 lesions per patient). Seventy-one complex lesions were treated with C stent, 41 with T stent, and 17 with no DES. It was a high-risk population, as reflected by 64% unstable angina and 40% diabetes mellitus. Of the 112 DES complex lesions treated, 38% would have been excluded from the Sirius and Taxus IV trials. RESULTS The main data on intra-segment angiographic measures showed a late luminal loss lower for the C stent than for the T stent (0.17+/-0.45 and 0.44+/-0.6, P=.02, respectively). The restenosis and target lesion revascularization percentages were also lower for the C stent (8.4% vs. 24.4%, P=.07 and 5.6% vs. 17.1%, P<.05, respectively). In the complex lesions without restenosis, 28% would have been excluded from the trials, while in complex lesions with restenosis, there were 53% (P=.05) (with a homogeneous percentage between the C and T groups). The predictor variables of restenosis in the 112 DES-treated complex lesions were length (P=.03, IC=0.97-1.6) and the pre-reference diameter (P=.06). CONCLUSIONS In our experience, the C stent is superior to the T stent when treating populations with a high percentage of complex lesions excluded from the trials.
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Affiliation(s)
- José R López-Mínguez
- Interventional Cardiology Section, Cardiology Service, Infanta Cristina Hospital, Extremadura University, Badajoz, Spain.
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109
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Silber S, Albertsson P, Avilés FF, Camici PG, Colombo A, Hamm C, Jørgensen E, Marco J, Nordrehaug JE, Ruzyllo W, Urban P, Stone GW, Wijns W. Guías de Práctica Clínica sobre intervencionismo coronario percutáneo. Rev Esp Cardiol 2005; 58:679-728. [PMID: 15970123 DOI: 10.1157/13076420] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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110
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O'Neill WW, Dixon SR, Grines CL. The year in interventional cardiology. J Am Coll Cardiol 2005; 45:1117-34. [PMID: 15808773 DOI: 10.1016/j.jacc.2005.01.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2005] [Accepted: 01/11/2005] [Indexed: 12/13/2022]
Affiliation(s)
- William W O'Neill
- Division of Cardiology, William Beaumont Hospital, 3601 West 13 Mile Road, Royal Oak, MI 48073, USA.
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111
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Jørgensen E, Kelbaek H. Drug-eluting stents for chronic total occlusions make sense, but it is too early to close the discussion. Eur Heart J 2005; 26:1049-51. [PMID: 15821000 DOI: 10.1093/eurheartj/ehi243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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112
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Ge L, Iakovou I, Cosgrave J, Chieffo A, Montorfano M, Michev I, Airoldi F, Carlino M, Melzi G, Sangiorgi GM, Corvaja N, Colombo A. Immediate and mid-term outcomes of sirolimus-eluting stent implantation for chronic total occlusions. Eur Heart J 2005; 26:1056-62. [PMID: 15817605 DOI: 10.1093/eurheartj/ehi191] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
AIMS To evaluate the outcomes of sirolimus-eluting stent (SES) implantation for the treatment of chronic total occlusion (CTO). METHODS AND RESULTS We identified 122 patients who underwent revascularization in CTO lesions with SES from April 2002 to April 2004 (SES group). A control group was composed of 259 consecutive patients with CTO lesions treated with bare metal stents (BMS) in the 24 months immediately before the introduction of SES (BMS group). At 6-month follow-up, the cumulative rate of major adverse cardiac events (MACE) was 16.4% in the SES group and 35.1% in the BMS group (P<0.001). The incidence of restenosis was 9.2% in the SES group and 33.3% in the BMS group (P<0.001). The need for revascularization in the SES group was significantly lower, both target lesion revascularization (7.4 vs. 26.3%, P<0.001) and target vessel revascularization (9.0 vs. 29.0%, P<0.001). BMS implantation (HR: 2.97; 95% CI: 1.80-4.89; P<0.001), lesion length (>20 mm) (HR: 2.02; 95% CI: 1.37-2.99; P=0.0004), and baseline reference vessel diameter (>2.8 mm) (HR: 0.62; 95% CI: 0.42-0.92; P=0.02) were identified as predictors of MACE during 6-month follow-up. CONCLUSION Compared with BMS, SES implantation in CTO lesions appears to be effective in reducing the incidence of restenosis and the need for revascularization at 6 months.
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Affiliation(s)
- Lei Ge
- EMO Centro Cuore Columbus and San Raffaele Hospital, 48 Via M. Buonarroti, 20145 Milan, Italy
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113
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Guidelines for percutaneous coronary interventions. The Task Force for Percutaneous Coronary Interventions of the European Society of Cardiology. Eur Heart J 2005; 26:804-47. [PMID: 15769784 DOI: 10.1093/eurheartj/ehi138] [Citation(s) in RCA: 855] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
In patients with stable CAD, PCI can be considered a valuable initial mode of revascularization in all patients with objective large ischaemia in the presence of almost every lesion subset, with only one exception: chronic total occlusions that cannot be crossed. In early studies, there was a small survival advantage with CABG surgery compared with PCI without stenting. The addition of stents and newer adjunctive medications improved the outcome for PCI. The decision to recommend PCI or CABG surgery will be guided by technical improvements in cardiology or surgery, local expertise, and patients' preference. However, until proved otherwise, PCI should be used only with reservation in diabetics with multi-vessel disease and in patients with unprotected left main stenosis. The use of drug-eluting stents might change this situation. Patients presenting with NSTE-ACS (UA or NSTEMI) have to be stratified first for their risk of acute thrombotic complications. A clear benefit from early angiography (<48 h) and, when needed, PCI or CABG surgery has been reported only in the high-risk groups. Deferral of intervention does not improve outcome. Routine stenting is recommended on the basis of the predictability of the result and its immediate safety. In patients with STEMI, primary PCI should be the treatment of choice in patients presenting in a hospital with PCI facility and an experienced team. Patients with contra-indications to thrombolysis should be immediately transferred for primary PCI, because this might be their only chance for quickly opening the coronary artery. In cardiogenic shock, emergency PCI for complete revascularization may be life-saving and should be considered at an early stage. Compared with thrombolysis, randomized trials that transferred the patients for primary PCI to a 'heart attack centre' observed a better clinical outcome, despite transport times leading to a significantly longer delay between randomization and start of the treatment. The superiority of primary PCI over thrombolysis seems to be especially clinically relevant for the time interval between 3 and 12 h after onset of chest pain or other symptoms on the basis of its superior preservation of myocardium. Furthermore, with increasing time to presentation, major-adverse-cardiac-event rates increase after thrombolysis, but appear to remain relatively stable after primary PCI. Within the first 3 h after onset of chest pain or other symptoms, both reperfusion strategies seem equally effective in reducing infarct size and mortality. Therefore, thrombolysis is still a viable alternative to primary PCI, if it can be delivered within 3 h after onset of chest pain or other symptoms. Primary PCI compared with thrombolysis significantly reduced stroke. Overall, we prefer primary PCI over thrombolysis in the first 3 h of chest pain to prevent stroke, and in patients presenting 3-12 h after the onset of chest pain, to salvage myocardium and also to prevent stroke. At the moment, there is no evidence to recommend facilitated PCI. Rescue PCI is recommended, if thrombolysis failed within 45-60 min after starting the administration. After successful thrombolysis, the use of routine coronary angiography within 24 h and PCI, if applicable, is recommended even in asymptomatic patients without demonstrable ischaemia to improve patients' outcome. If a PCI centre is not available within 24 h, patients who have received successful thrombolysis with evidence of spontaneous or inducible ischaemia before discharge should be referred to coronary angiography and revascularized accordingly--independent of 'maximal' medical therapy.
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114
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McNulty E, Cohen J, Chou T, Shunk K. A “Grapple Hook” technique using a deflectable tip catheter to facilitate complex proximal circumflex interventions. Catheter Cardiovasc Interv 2005; 67:46-8. [PMID: 16331693 DOI: 10.1002/ccd.20547] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We present two patients with angulated, proximal left circumflex lesions, one a chronic total occlusion and one an acute subtotal occlusion. In both cases, use of the deflectable tip Venture Catheter (Velocimed, Minneapolis, MN) facilitated guide wire passage and successful percutaneous coronary intervention (PCI) after prior attempts at guide wire passage with standard wires were unsuccessful.
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Affiliation(s)
- Edward McNulty
- Department of Cardiology, San Francisco VA Medical Center, University of California, San Francisco School of Medicine, USA.
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115
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Werner GS, Schwarz G, Prochnau D, Fritzenwanger M, Krack A, Betge S, Figulla HR. Paclitaxel-eluting stents for the treatment of chronic total coronary occlusions: A strategy of extensive lesion coverage with drug-eluting stents. Catheter Cardiovasc Interv 2005; 67:1-9. [PMID: 16345052 DOI: 10.1002/ccd.20437] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The recanalization of a chronic total coronary occlusion (CTO) is hampered by a high rate of lesion recurrence. The goal of the present study is to assess the effect of paclitaxel-eluting stents in CTOs in a strategy of extensive stent coverage and the optional use of additional bare metal stents (BMSs). In 82 consecutive patients, a CTO (duration > 2 weeks) was successfully recanalized with implantation of one or more Taxus stents. These patients underwent a repeat angiography after 5.0 +/- 1.5 months and were assessed by quantitative angiography. The patients were compared with 82 clinically and lesion-matched patients from a consecutive series of 148 patients with CTOs treated by BMS in the preceding time period. In 21 of the 82 patients, additional lesions in the target artery not directly related to the original occlusion site were treated with BMSs (hybrid approach). The history of diabetes, extent of coronary artery disease, clinical symptoms, and angiographic features were similar in the Taxus and BMS group. Periprocedural adverse events were 3.3% with Taxus and 3.3% with BMS, but 12 months MACE was significantly lower in the group with exclusive use of Taxus (13.3% vs. 56.7%; P < 0.001), mainly due to a lower target lesion revascularization of 10.0% as compared to 53.4% (P < 0.001). There was only one late reocclusion with Taxus (1.7%) as compared to 21.7% with BMS (P < 0.05). However, in the hybrid group, the MACE rate was considerably higher, with 33.3%. Our data of a 80% reduction of target vessel failure as compared to BMS, with a lower risk of late reocclusions without increased acute adverse events, demonstrate the benefit of paclitaxel-eluting stents in CTOs. However, diffuse atherosclerosis in CTOs should be covered completely by the drug-eluting stents.
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Affiliation(s)
- Gerald S Werner
- Clinic for Internal Medicine I, Friedrich-Schiller-University Jena, Erlanger Allee 101, D-07740 Jena, Germany.
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