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Terashita K, Shimada Y, Yamanaka Y, Motohashi Y, Tonomura D, Yoshitani K, Yoshida M, Tsuchida T, Fukumoto H. Intraplaque wiring enables drug-coated balloons to be utilized for percutaneous recanalization of chronically occluded coronary arteries. Catheter Cardiovasc Interv 2023; 101:764-772. [PMID: 36786488 DOI: 10.1002/ccd.30596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 01/05/2023] [Accepted: 02/02/2023] [Indexed: 02/15/2023]
Abstract
OBJECTIVES This study aimed to determine whether drug-coated balloon (DCB) angioplasty following intraplaque wiring and the use of modified balloons is safe and effective in the percutaneous treatment of coronary chronic total occlusions (CTOs). BACKGROUND DCB is an alternative therapeutic option without the limitations of permanent vascular implants. However, its efficacy in CTOs has yet to be confirmed. The combination of modified balloons and DCB can be effectively applied when the intraplaque passage of the guidewire is achieved in CTOs. METHODS Data from 124 consecutive CTO lesions (105 patients) treated at our hospital between February 2016 and December 2020 were screened for inclusion and retrospectively analyzed. Among the 118 lesions successfully recanalized, intraplaque wiring was achieved in 108, and 85 were treated by the DCB-only approach following cutting/scoring balloon dilatation. RESULTS Follow-up data were available for 82 lesions (71 patients). The median occlusion length was 18.5 mm, and the J-CTO score was 1.7 ± 0.9. No in-hospital major adverse cardiac events occurred, including abrupt vessel closure. During the median 29-month follow-up period, target lesion revascularization was performed for 10 lesions. Follow-up coronary angiography (8.7 ± 3.9 months after the index procedure) was performed for 64 lesions, demonstrating late lumen loss of -0.15 mm (interquartile range -0.4 to 0.23 mm), binary restenosis (diameter stenosis ≥50%) in 12 lesions (18.8%), and late lumen enlargement in 37 (57.8%). CONCLUSION The DCB-only approach following the use of modified balloons is a promising strategy for coronary CTOs when intraplaque wiring is achieved.
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Affiliation(s)
- Kazunori Terashita
- Division of Cardiology, Cardiovascular Center, Shiroyama Hospital, Habikino, Osaka, Japan
| | - Yoshihisa Shimada
- Division of Cardiology, Cardiovascular Center, Shiroyama Hospital, Habikino, Osaka, Japan
| | - Yuki Yamanaka
- Division of Cardiology, Cardiovascular Center, Shiroyama Hospital, Habikino, Osaka, Japan
| | - Yoshikazu Motohashi
- Division of Cardiology, Cardiovascular Center, Shiroyama Hospital, Habikino, Osaka, Japan
| | - Daisuke Tonomura
- Division of Cardiology, Cardiovascular Center, Shiroyama Hospital, Habikino, Osaka, Japan
| | - Kazuyasu Yoshitani
- Division of Cardiology, Cardiovascular Center, Shiroyama Hospital, Habikino, Osaka, Japan
| | - Masataka Yoshida
- Division of Cardiology, Cardiovascular Center, Shiroyama Hospital, Habikino, Osaka, Japan
| | - Takao Tsuchida
- Division of Cardiology, Cardiovascular Center, Shiroyama Hospital, Habikino, Osaka, Japan
| | - Hitoshi Fukumoto
- Division of Cardiology, Cardiovascular Center, Shiroyama Hospital, Habikino, Osaka, Japan
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Mashayekhi KA, Pyxaras SA. The myocardial perfusion paradigm: a missing link between patient selection and appropriateness of treatment. EUROINTERVENTION 2022; 18:e269-e270. [PMID: 35866258 PMCID: PMC9912956 DOI: 10.4244/eij-e-22-00016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Kambis A. Mashayekhi
- Internal Medicine and Cardiology, Heart Center Lahr, Hohbergweg 2, 77933 Lahr, Germany
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Nakamura M, Yaku H, Ako J, Arai H, Asai T, Chikamori T, Daida H, Doi K, Fukui T, Ito T, Kadota K, Kobayashi J, Komiya T, Kozuma K, Nakagawa Y, Nakao K, Niinami H, Ohno T, Ozaki Y, Sata M, Takanashi S, Takemura H, Ueno T, Yasuda S, Yokoyama H, Fujita T, Kasai T, Kohsaka S, Kubo T, Manabe S, Matsumoto N, Miyagawa S, Mizuno T, Motomura N, Numata S, Nakajima H, Oda H, Otake H, Otsuka F, Sasaki KI, Shimada K, Shimokawa T, Shinke T, Suzuki T, Takahashi M, Tanaka N, Tsuneyoshi H, Tojo T, Une D, Wakasa S, Yamaguchi K, Akasaka T, Hirayama A, Kimura K, Kimura T, Matsui Y, Miyazaki S, Okamura Y, Ono M, Shiomi H, Tanemoto K. JCS 2018 Guideline on Revascularization of Stable Coronary Artery Disease. Circ J 2022; 86:477-588. [DOI: 10.1253/circj.cj-20-1282] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Masato Nakamura
- Division of Cardiovascular Medicine, Toho University Ohashi Medical Center
| | - Hitoshi Yaku
- Department of Cardiovascular Surgery, Kyoto Prefectural University of Medicine
| | - Junya Ako
- Department of Cardiovascular Medicine, Kitasato University Graduate School of Medical Sciences
| | - Hirokuni Arai
- Department of Cardiovascular Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Tohru Asai
- Department of Cardiovascular Surgery, Juntendo University Graduate School of Medicine
| | | | - Hiroyuki Daida
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine
| | - Kiyoshi Doi
- General and Cardiothoracic Surgery, Gifu University Graduate School of Medicine
| | - Toshihiro Fukui
- Department of Cardiovascular Surgery, Graduate School of Medical Sciences, Kumamoto University
| | - Toshiaki Ito
- Department of Cardiovascular Surgery, Japanese Red Cross Nagoya Daiichi Hospital
| | | | - Junjiro Kobayashi
- Department of Cardiovascular Surgery, National Cerebral and Cardiovascular Center
| | - Tatsuhiko Komiya
- Department of Cardiovascular Surgery, Kurashiki Central Hospital
| | - Ken Kozuma
- Department of Internal Medicine, Teikyo University Faculty of Medicine
| | - Yoshihisa Nakagawa
- Department of Cardiovascular Medicine, Shiga University of Medical Science
| | - Koichi Nakao
- Division of Cardiology, Saiseikai Kumamoto Hospital Cardiovascular Center
| | - Hiroshi Niinami
- Department of Cardiovascular Surgery, Tokyo Women’s Medical University
| | - Takayuki Ohno
- Department of Cardiovascular Surgery, Mitsui Memorial Hospital
| | - Yukio Ozaki
- Department of Cardiology, Fujita Health University Hospital
| | - Masataka Sata
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences
| | | | - Hirofumi Takemura
- Department of Cardiovascular Surgery, Graduate School of Medical Sciences, Kanazawa University
| | | | - Satoshi Yasuda
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Hitoshi Yokoyama
- Department of Cardiovascular Surgery, Fukushima Medical University
| | - Tomoyuki Fujita
- Department of Cardiovascular Surgery, National Cerebral and Cardiovascular Center
| | - Tokuo Kasai
- Department of Cardiology, Uonuma Institute of Community Medicine, Niigata University Uonuma Kikan Hospital
| | - Shun Kohsaka
- Department of Cardiology, Keio University School of Medicine
| | - Takashi Kubo
- Department of Cardiovascular Medicine, Wakayama Medical University
| | - Susumu Manabe
- Department of Cardiovascular Surgery, Tsuchiura Kyodo General Hospital
| | | | - Shigeru Miyagawa
- Frontier of Regenerative Medicine, Graduate School of Medicine, Osaka University
| | - Tomohiro Mizuno
- Department of Cardiovascular Surgery, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University
| | - Noboru Motomura
- Department of Cardiovascular Surgery, Graduate School of Medicine, Toho University
| | - Satoshi Numata
- Department of Cardiovascular Surgery, Kyoto Prefectural University of Medicine
| | - Hiroyuki Nakajima
- Department of Cardiovascular Surgery, Saitama Medical University International Medical Center
| | - Hirotaka Oda
- Department of Cardiology, Niigata City General Hospital
| | - Hiromasa Otake
- Department of Cardiovascular Medicine, Kobe University Graduate School of Medicine
| | - Fumiyuki Otsuka
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Ken-ichiro Sasaki
- Division of Cardiovascular Medicine, Kurume University School of Medicine
| | - Kazunori Shimada
- Department of Cardiovascular Medicine, Juntendo University Graduate School of Medicine
| | - Tomoki Shimokawa
- Department of Cardiovascular Surgery, Sakakibara Heart Institute
| | - Toshiro Shinke
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
| | - Tomoaki Suzuki
- Department of Cardiovascular Surgery, Shiga University of Medical Science
| | - Masao Takahashi
- Department of Cardiovascular Surgery, Hiratsuka Kyosai Hospital
| | - Nobuhiro Tanaka
- Department of Cardiology, Tokyo Medical University Hachioji Medical Center
| | | | - Taiki Tojo
- Department of Cardiovascular Medicine, Kitasato University Graduate School of Medical Sciences
| | - Dai Une
- Department of Cardiovascular Surgery, Okayama Medical Center
| | - Satoru Wakasa
- Department of Cardiovascular and Thoracic Surgery, Hokkaido University Graduate School of Medicine
| | - Koji Yamaguchi
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences
| | - Takashi Akasaka
- Department of Cardiovascular Medicine, Wakayama Medical University
| | | | - Kazuo Kimura
- Cardiovascular Center, Yokohama City University Medical Center
| | - Takeshi Kimura
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University
| | - Yoshiro Matsui
- Department of Cardiovascular and Thoracic Surgery, Graduate School of Medicine, Hokkaido University
| | - Shunichi Miyazaki
- Division of Cardiology, Department of Internal Medicine, Faculty of Medicine, Kindai University
| | | | - Minoru Ono
- Department of Cardiac Surgery, Graduate School of Medicine, The University of Tokyo
| | - Hiroki Shiomi
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University
| | - Kazuo Tanemoto
- Department of Cardiovascular Surgery, Kawasaki Medical School
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Farag M, Egred M. CTO in Contemporary PCI. Curr Cardiol Rev 2022; 18:e310521193720. [PMID: 34061015 PMCID: PMC9241114 DOI: 10.2174/1573403x17666210531143519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/26/2021] [Accepted: 04/05/2021] [Indexed: 11/22/2022] Open
Abstract
Percutaneous Coronary Intervention (PCI) of Chronic Total Occlusions (CTO) represents the most challenging procedure in modern endovascular treatments. In recent years, the success rate of CTO PCI has substantially improved, owing to increasing operator expertise and advancements in CTO equipment and algorithms as well as the development of expert consensus documents. In this review, we summarize existing evidence for CTO PCI, its success/ risk prediction scoring tools, procedural principles and complications and provide an insight into the future role of CTO PCI.
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Affiliation(s)
- Mohamed Farag
- Department of Cardiology, Freeman Hospital, Newcastle upon Tyne, UK.,School of Life and Medical Sciences, University of Hertfordshire, Hertfordshire, UK
| | - Mohaned Egred
- Department of Cardiology, Freeman Hospital, Newcastle upon Tyne, UK
- Newcastle University Translational and Clinical Research Institute, Newcastle upon Tyne, UK.,Professor in Interventi onal Cardiology and Cardiovascular Medicine, School of Medicine within the Faculty ofHealth Sciences and Wellbeing at the University of Sunderland, UK
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Megaly M, Khalil M, Basir MB, McEntegart MB, Spratt JC, Yamane M, Tsuchikane E, Xu B, Alaswad K, Brilakis ES. Outcomes of successful vs. failed contemporary chronic total occlusion percutaneous coronary intervention. Cardiovasc Interv Ther 2021; 37:483-489. [PMID: 34716883 DOI: 10.1007/s12928-021-00819-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 10/22/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND There are limited contemporary data on the impact of success vs. failure on the outcomes of chronic total occlusion (CTO) percutaneous coronary intervention (PCI). METHODS We conducted a systematic review and a meta-analysis of contemporary studies that compared the outcomes in patients who underwent successful vs. failed contemporary (2010 onwards) CTO PCI. We performed a sensitivity analysis limited to studies that started enrollment after the publication of the hybrid algorithm in 2012. RESULTS We included five studies with a total of 6,084 patients (successful CTO PCI n = 4,861, failed CTO PCI n = 1,223). During a median follow-up time of 12 months (range 6-60 months), successful CTO PCI was associated with a lower risk of major adverse cardiovascular events [OR: 0.61, 95% CI (0.41, 0.92), p = 0.02, I2 = 63%] and all-cause death [OR: 0.57, 95% CI (0.33, 0.99), p = 0.05, I2 = 60%]. Both groups had similar risk of myocardial infarction (MI) [OR 0.69, 95% CI (0.43, 1.10), p = 0.38, I2 = 80%], target vessel revascularization (TVR) [OR: 0.56, 95% CI (0.25, 1.27), p = 0.17, I2 = 80%], and stroke [OR: 0.52, 95% CI (0.14, 1.91), p = 0.33, I2 = 0%]. CONCLUSION In contemporary practice, successful CTO PCI was associated with a lower incidence of MACE driven by lower all-cause mortality compared with failed CTO PCI at a median follow-up of 1 year.
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Affiliation(s)
- Michael Megaly
- Division of Cardiology, Banner University Medical Center, Phoenix, AZ, USA
| | - Mahmoud Khalil
- Department of Medicine, Lincoln Medical Center, New York, NY, USA
| | - Mir B Basir
- Division of Cardiology, Henry Ford Hospital, Detroit, MI, USA
| | | | - James C Spratt
- Department of Cardiology, St. George's University Hospitals NHS Foundation Trust, London, UK
| | | | | | - Bo Xu
- Fu Wai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | | | - Emmanouil S Brilakis
- Minneapolis Heart Institute and Minneapolis Heart Institute Foundation, Abbott Northwestern Hospital, 920 E 28th Street #300, Minneapolis, MN, 55407, USA.
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Vanneman MW. Anesthetic Considerations for Percutaneous Coronary Intervention for Chronic Total Occlusions-A Narrative Review. J Cardiothorac Vasc Anesth 2021; 36:2132-2142. [PMID: 34493436 DOI: 10.1053/j.jvca.2021.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 07/18/2021] [Accepted: 08/01/2021] [Indexed: 11/11/2022]
Abstract
Advancing stent technology has enabled interventional cardiologists to perform percutaneous coronary intervention (PCI) to open chronic total occlusions (CTOs). Because PCI for CTOs improve patient anginal symptoms and quality of life, these procedures have been increasing over the past decade. Compared to standard PCI, these procedures are technically more difficult, with prolonged procedure time and increased risk of complications. Accordingly, anesthesiologists are increasingly being asked to provide sedation for these patients in the cardiac catheterization suite. In CTO PCI, anesthesiologists are more likely to encounter complications such as coronary artery perforation, malignant arrhythmias, non-target vessel ischemia, bleeding and shock. Additionally, CTO PCI may be supported by mechanical circulatory support devices. Understanding the procedural techniques of these complex PCI procedures is important to enable optimal anesthetic care in these patients. This narrative review discusses the pathophysiology, risks, benefits, procedural steps, and main anesthetic considerations for patients undergoing CTO PCI. Despite a growing body of literature, future research is still required to elucidate optimal anesthetic and mechanical support strategies in patients undergoing CTO PCI.
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Affiliation(s)
- Matthew W Vanneman
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University School of Medicine, Stanford, CA.
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7
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Khera S, Dangas GD. Chronic coronary total occlusions: Let's make the long story short. Catheter Cardiovasc Interv 2021; 97:1184-1185. [PMID: 33974745 DOI: 10.1002/ccd.29722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 04/12/2021] [Indexed: 11/06/2022]
Affiliation(s)
- Sahil Khera
- Department of Medicine, Division of Cardiology, Mount Sinai Hospital, New York, New York, USA
| | - George D Dangas
- Department of Medicine, Division of Cardiology, Mount Sinai Hospital, New York, New York, USA
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Khanra D, Mishra V, Jain B, Soni S, Bahurupi Y, Duggal B, Rathore S, Guha S, Agarwal S, Aggarwal P, Sinha S, Himanshu K. Percutaneous coronary intervention provided better long term results than optimal medical therapy alone in patients with chronic total occlusion: A meta-analysis. Indian Heart J 2020; 72:225-231. [PMID: 32861374 PMCID: PMC7474112 DOI: 10.1016/j.ihj.2020.07.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/21/2020] [Accepted: 07/07/2020] [Indexed: 11/25/2022] Open
Abstract
AIMS Studies comparing the outcome of percutaneous coronary intervention (PCI) along with optimal medical therapy (OMT) versus OMT alone in treatment of chronic total occlusion (CTO) are limited by observational design, variable follow-up period, diverse clinical outcomes, high drop-out and cross-over rates. This study aims to conduct a meta-analysis of published data of observational as well as randomized studies comparing long term outcomes of PCI+OMT versus OMT alone. METHODS AND RESULTS PubMed, Embase and Cochrane databases were systematically reviewed. 15 studies meeting criteria were included in the meta-analysis. The New-castle Ottawa scale was used to appraise the overall quality of the studies. Random-effects model with inverse variance method was undertaken. Major adverse cardiovascular events (MACE) which comprises of cardiac death, myocardial infarction, stroke, and un-planned revascularization were significantly lower in the PCI+OMT group (RR:0.76; 95% CI:0.61 to 0.95; P=<0.00001; I2 = 85%). All-cause mortality and cardiac death were significantly lower in the PCI+OMT group (P=<0.00001 in both). Myocardial infarction and stroke rates were lower in the PCI+OMT group, however they did not reach statistical significance (P = 0.24, P = 0.15 respectively). Unplanned revascularizations (of any vessel) were also similar in both the groups (P = 0.78, I2 = 88%). CONCLUSION PCI of CTO is rewarded with better long term outcome, in terms of MACE, all-cause mortality and cardiac death with similar rates of un-planned revascularization.
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Affiliation(s)
| | - Vikas Mishra
- Department of Cardiology, Super-Speciality Hospital, NSCB Medical College, Jabalpur, MP, India.
| | - Bhavna Jain
- All India Institute of Medical Sciences (AIIMS), Rishikesh, India
| | - Shishir Soni
- Department of Cardiology, All India Institution of Medical Sciences (AIIMS), Rishikesh, India.
| | - Yogesh Bahurupi
- All India Institute of Medical Sciences (AIIMS), Rishikesh, India.
| | - Bhanu Duggal
- All India Institute of Medical Sciences (AIIMS), Rishikesh, India.
| | - Sudhir Rathore
- Frimley Health NHS Foundation Trust, Camberley, Surrey, UK.
| | - Santanu Guha
- Cardiology, Medical College Kolkata, West Bengal, India.
| | | | - Puneet Aggarwal
- Department of Cardiology, ABVIMS and Dr. RML Hospital, New Delhi, India.
| | - SantoshKumar Sinha
- Department of Cardiology, LPS Institution of Cardiology, Kanpur, Uttar Pradesh, India.
| | - Kumar Himanshu
- Department of Cardiology, LPS Institution of Cardiology, Kanpur, Uttar Pradesh, India.
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Yang ZK, Shen Y, Dai Y, Wang XQ, Hu J, Ding FH, Zhang RY, Lu L, Shen WF. Impact of coronary collateralization on long-term clinical outcomes in type 2 diabetic patients after successful recanalization of chronic total occlusion. Cardiovasc Diabetol 2020; 19:59. [PMID: 32393276 PMCID: PMC7216347 DOI: 10.1186/s12933-020-01033-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 05/07/2020] [Indexed: 12/14/2022] Open
Abstract
Background To assess the prognostic role of coronary collaterals in patients with type 2 diabetes mellitus (T2DM) after successful percutaneous coronary intervention (PCI) for chronic total occlusion (CTO). Methods Coronary collateralization was graded according to Rentrop scoring system in 198 type 2 diabetic patients and 335 non-diabetics with stable angina undergoing PCI for at least one CTO lesion. Left ventricular ejection fraction (LVEF) was determined and major adverse cardio-cerebral events (MACCE) were recorded during follow-up. Results Poor collateralization was more common in patients with T2DM than in non-diabetics (40% vs 29%, p = 0.008). At 13.5 ± 4.1 months, the rate of composite MACCE (17.3% vs 27.6%, p = 0.034) and repeat revascularization (15.2% vs 25.5%, p = 0.026) was lower and the increase in LVEF (3.10% vs 1.80%, p = 0.024) was greater in patients with good collaterals than in those with poor collaterals for non-diabetic group. The associations were in the same direction for T2DM group (35% vs 44%; 30% vs 36%; 2.14% vs 1.65%, respectively) with a higher all-cause mortality in diabetic patients with poor collaterals (p = 0.034). Multivariable Cox proportional hazards analysis showed that coronary collateralization was an independent factor for time to MACCE (HR 2.155,95% CI 1.290–3.599, p = 0.003) and repeat revascularization (HR 2.326, 95% CI 1.357–3.986, p = 0.002) in non-diabetic patients, but did not enter the model in those with T2DM. Conclusions T2DM is associated with reduced coronary collateralization. The effects of the status of coronary collateralization on long-term clinical outcomes and left ventricular function appear to be similar in size in type 2 diabetic patients and non-diabetics after successful recanalization of CTO.
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Affiliation(s)
- Zhen Kun Yang
- Department of Cardiology, Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, People's Republic of China
| | - Ying Shen
- Department of Cardiology, Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, People's Republic of China
| | - Yang Dai
- Institute of Cardiovascular Diseases, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, People's Republic of China
| | - Xiao Qun Wang
- Department of Cardiology, Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, People's Republic of China
| | - Jian Hu
- Department of Cardiology, Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, People's Republic of China
| | - Feng Hua Ding
- Department of Cardiology, Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, People's Republic of China
| | - Rui Yan Zhang
- Department of Cardiology, Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, People's Republic of China
| | - Lin Lu
- Department of Cardiology, Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, People's Republic of China.,Institute of Cardiovascular Diseases, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, People's Republic of China
| | - Wei Feng Shen
- Department of Cardiology, Rui Jin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, People's Republic of China. .,Institute of Cardiovascular Diseases, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, People's Republic of China.
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10
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Malik AO, Spertus JA, Grantham JA, Peri-Okonny P, Gosch K, Sapontis J, Moses J, Lombardi W, Karmpaliotis D, Nicholson WJ, Al Badarin F, Salisbury AC. Outcomes of Chronic Total Occlusion Percutaneous Coronary Intervention in Patients With Renal Dysfunction. Am J Cardiol 2020; 125:1046-1053. [PMID: 31955832 DOI: 10.1016/j.amjcard.2019.12.045] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 12/17/2019] [Accepted: 12/18/2019] [Indexed: 10/25/2022]
Abstract
Although contemporary chronic total occlusion (CTO) percutaneous coronary intervention (PCI) is performed with high success rates, 10% to 13% of patients presenting with CTOs have chronic kidney disease (CKD), and the comparative safety, efficacy, and health status benefit of CTO PCI in these patients, has not been well defined. We examined the association of baseline renal function with periprocedural major adverse cardiovascular and cerebral events and health status outcomes in 957 consecutive patients (mean age 65.3 ± 10.3 years, 19.4% women, 90.3% white, 23.6 CKD [estimated glomerular filtration rate {eGFR} < 60]) in the OPEN-CTO (Outcomes, Patients Health Status, and Efficiency in Chronic Total Occlusions Registry) study. Hierarchical multivariable regression models were used to examine the independent association of baseline eGFR with technical success, periprocedural complications and change in health status, using Seattle Angina Questionnaire (SAQ) over 1 year. Crude rates of acute kidney injury were higher (13.5% vs 4.4%, p <0.001) and technical success lower (81.8% vs 88.4%, p = 0.01) in patients with CKD. There were no significant differences in other periprocedural complications. After adjustment for confounding factors, there was no significant association of baseline eGFR with technical success or periprocedural major adverse cardiovascular and cerebral events (death, myocardial infarction, emergent bypass surgery, stroke, perforation), whereas patients with lower eGFR had higher rates of acute kidney injury. The difference in SAQ summary score, between patients on the 10th and 90th percentile for baseline eGFR distribution was not clinically significant (1 month: -0.91; 1 year: -3.06 points). In conclusion, CTO PCI success, complication rates, and the health status improvement after CTO PCI are similar in patients across a range of baseline eGFRs.
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11
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Quadros A, Belli KC, de Paula JET, de Magalhães Campos CAH, da Silva ACB, Santiago R, Ribeiro MH, de Oliveira PP, Lamelas P, Abelin AP, Bezerra CG, Filho EM, Fuchs FC, de Los Santos FD, de Andrade PB, Quesada FLH, Araya M, Perez LA, Côrtes LA, Zukowski CN, Alcantara M, Muniz AJ, Martinelli GC, de Carvalho Cantarelli MJ, Brito FS, Baradel S, de Alencar Araripe Falcão B, Mangione JA, Medeiros CR, Degrazia RC, Lecaro JAN, Gioppato S, Ybarra LF, Weilenmann D, Gottschall CAM, Lemke V, Padilla L. Chronic total occlusion percutaneous coronary intervention in Latin America. Catheter Cardiovasc Interv 2020; 96:1046-1055. [PMID: 31990453 DOI: 10.1002/ccd.28744] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 12/23/2019] [Accepted: 01/13/2020] [Indexed: 11/10/2022]
Abstract
OBJECTIVES To report clinical, angiographic characteristics, outcomes, and predictors of unsuccessful procedures in patients who underwent chronic total occlusion (CTO) percutaneous coronary interventions (PCI) in Latin America. BACKGROUND CTO PCI has been increasingly performed worldwide, but there is a lack of information in this region. METHODS An international multicenter registry was developed to collect data on CTO PCI performed in centers in Latin America. Patient, angiographic, procedural and outcome data were evaluated. Predictors of unsuccessful procedures were assessed by multivariable analysis. RESULTS We have included data related to 1,040 CTO PCIs performed in seven countries in Latin America (Argentina, Brazil, Chile, Colombia, Ecuador, Mexico, and Puerto Rico). The mean age was 64 ± 10 years, and CTO PCI was performed mainly for angina control (81%) or treatment of a large ischemic area (30%). Overall technical success rate was 82.5%, and it was achieved with antegrade wire escalation in 81%, antegrade dissection/re-entry in 8% and with retrograde techniques in 11% of the successful procedures. Multivariable analysis identified moderate/severe calcification, a blunt proximal cap and a previous attempt as independent predictors of unsuccessful procedures. In-hospital major adverse cardiovascular events (MACE) occurred in 3.1% of the cases, death in 1% and cardiac tamponade in 0.9% CONCLUSIONS: CTO PCI in Latin America has been performed mainly for ischemia relief. Procedures were associated with a success rate above 80% and low incidence of MACE. Predictors of unsuccessful procedures were similar to those previously reported in the literature.
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Affiliation(s)
- Alexandre Quadros
- Instituto de Cardiologia do Rio Grande do Sul, Porto Alegre, Brazil.,Sociedade Brasileira de Hemodinâmica e Cardiologia Intervencionista, Brazil
| | - Karlyse C Belli
- Instituto de Cardiologia do Rio Grande do Sul, Porto Alegre, Brazil
| | | | | | | | | | | | | | - Pablo Lamelas
- Instituto Cardiovascular de Buenos Aires, Buenos Aires, Argentina
| | | | | | | | | | - Félix D de Los Santos
- Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico.,Hospital San Ángel, Mexico City, Mexico
| | | | | | | | - Luis A Perez
- Hospital Clinico Regional Dr Guillermo Grant Benavente, Concepción, Chile
| | | | | | | | - Antônio J Muniz
- Santa Casa de Misericórdia Juiz de Fora, Juiz de Fora, Brazil
| | | | | | | | - Sandra Baradel
- Sociedade Brasileira de Hemodinâmica e Cardiologia Intervencionista, Brazil
| | | | | | - César R Medeiros
- Sociedade Brasileira de Hemodinâmica e Cardiologia Intervencionista, Brazil.,Hospital Badim, Rio de Janeiro, Brazil.,Hospital Unimed Rio, Rio de Janeiro, Brazil
| | - Ramiro C Degrazia
- Hospital Unimed RS, Caxias do Sul, Brazil.,Hospital Nossa Senhora de Pompeia, Caxias do Sul, Brazil.,Hospital Circulo Operario Caxiense, Caxias do Sul, Brazil
| | - José A N Lecaro
- Hospital de Especialidades Eugenio Espejo, Quito, Ecuador.,Hospital de Los Valles, Quito, Ecuador
| | - Silvio Gioppato
- Sociedade Brasileira de Hemodinâmica e Cardiologia Intervencionista, Brazil.,Hospital de Clínicas da UNICAMP, Campinas, Brazil.,Hospital Vera Cruz, Campinas, Brazil
| | - Luiz F Ybarra
- London Health Sciences Centre, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
| | | | | | - Viviana Lemke
- Sociedade Brasileira de Hemodinâmica e Cardiologia Intervencionista, Brazil
| | - Lucio Padilla
- Instituto Cardiovascular de Buenos Aires, Buenos Aires, Argentina
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12
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Li KHC, Wong KHG, Gong M, Liu T, Li G, Xia Y, Ho J, Nombela-Franco L, Sawant AC, Eccleshall S, Tse G, Vassiliou VS. Percutaneous Coronary Intervention Versus Medical Therapy for Chronic Total Occlusion of Coronary Arteries: A Systematic Review and Meta-Analysis. Curr Atheroscler Rep 2019; 21:42. [PMID: 31399762 PMCID: PMC6689032 DOI: 10.1007/s11883-019-0804-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Purpose of Review Chronic total occlusion (CTO) of the coronary arteries is a significant clinical problem and has traditionally been treated by medical therapy or coronary artery bypass grafting. Recent studies have examined percutaneous coronary intervention (PCI) as an alternative option. Recent Findings This systematic review and meta-analysis compared medical therapy to PCI for treating CTOs. Summary PubMed and Embase were searched from their inception to March 2019 for studies that compared medical therapy and PCI for clinical outcomes in patients with CTOs. Quality of the included studies was assessed by Newcastle–Ottawa scale. The results were pooled by DerSimonian and Laird random- or fixed-effect models as appropriate. Heterogeneity between studies and publication bias was evaluated by I2 index and Egger’s regression, respectively. Of the 703 entries screened, 17 studies were included in the final analysis. This comprised 11,493 participants. Compared to PCI, medical therapy including randomized and observational studies was significantly associated with higher risk of all-cause mortality (risk ratio (RR) 1.99, 95% CI 1.38–2.86), cardiac mortality (RR 2.36 (1.97–2.84)), and major adverse cardiac event (RR 1.25 (1.03–1.51)). However, no difference in the rate of myocardial infarction and repeat revascularization procedures was observed between the two groups. Univariate meta-regression demonstrated multiple covariates as independent moderating factors for myocardial infarction and repeat revascularization but not cardiac death and all-cause mortality. However, when only randomized studies were included, there was no difference in overall mortality or cardiac death. In CTO, when considering randomized and observational studies, medical therapy might be associated with a higher risk of mortality and myocardial infarction compared to PCI treatment. Electronic supplementary material The online version of this article (10.1007/s11883-019-0804-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ka Hou Christien Li
- Department of Medicine and Therapeutics, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, SAR, People's Republic of China.,Li Ka Shing Institute of Health Sciences, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, SAR, People's Republic of China.,Faculty of Medicine, Newcastle University, Newcastle, UK
| | - Ka Hei Gabriel Wong
- Department of Medicine and Therapeutics, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, SAR, People's Republic of China.,Li Ka Shing Institute of Health Sciences, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - Mengqi Gong
- Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, 300211, People's Republic of China
| | - Tong Liu
- Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, 300211, People's Republic of China
| | - Guangping Li
- Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, Second Hospital of Tianjin Medical University, Tianjin, 300211, People's Republic of China
| | - Yunlong Xia
- Department of Cardiology, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jeffery Ho
- Li Ka Shing Institute of Health Sciences, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, SAR, People's Republic of China.,Department of Microbiology, The Chinese University of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - Luis Nombela-Franco
- Cardiology Department, Instituto Cardiovascular, Hospital Clínico San Carlos, IdISSC, Madrid, Spain
| | - Abhishek C Sawant
- Division of Interventional Cardiology, Banner University Medical Center, Phoenix, AZ, USA
| | - Simon Eccleshall
- Norfolk and Norwich University Hospital and Norwich Medical School, University of East Anglia, Norwich, UK
| | - Gary Tse
- Department of Medicine and Therapeutics, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, SAR, People's Republic of China.,Li Ka Shing Institute of Health Sciences, Faculty of Medicine, Chinese University of Hong Kong, Hong Kong, SAR, People's Republic of China
| | - Vassilios S Vassiliou
- Norfolk and Norwich University Hospital and Norwich Medical School, University of East Anglia, Norwich, UK. .,Royal Brompton Hospital and Imperial College London, London, UK. .,Bob Champion Research and Education, Second Floor, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK.
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13
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The Current Role of Viability Imaging to Guide Revascularization and Therapy Decisions in Patients With Heart Failure and Reduced Left Ventricular Function. Can J Cardiol 2019; 35:1015-1029. [DOI: 10.1016/j.cjca.2019.04.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 04/25/2019] [Accepted: 04/28/2019] [Indexed: 12/20/2022] Open
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14
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Ybarra LF, Cantarelli MJC, Lemke VMG, Quadros ASD. Percutaneous Coronary Intervention in Chronic Total Occlusion. Arq Bras Cardiol 2018; 110:476-483. [PMID: 29898046 PMCID: PMC5967142 DOI: 10.5935/abc.20180077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 03/07/2018] [Indexed: 01/04/2023] Open
Abstract
Percutaneous coronary intervention in chronic total occlusion is a rapidly
evolving area, being considered the last frontier of interventional cardiology.
In recent years, the development of new techniques and equipment, as well as the
training of specialized personnel, increased their success rates, making it the
most predictable procedure available. Although the number of randomized and
controlled studies is still limited, results from large multicentered registries
allow us to safely offer this intervention to patients, as another treatment
option along with the optimized drug treatment and myocardial revascularization
surgery. This review summarizes the last and most relevant publications in the
subject in order to provide an overall view of the field’s current status.
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Affiliation(s)
| | - Marcelo J C Cantarelli
- Sociedade Brasileira de Hemodinâmica e Cardiologia Intervencionista, São Paulo, SP - Brazil.,Hospitais Leforte, São Paulo, SP - Brazil
| | - Viviana M G Lemke
- Sociedade Brasileira de Hemodinâmica e Cardiologia Intervencionista, São Paulo, SP - Brazil.,Hospital das Nações, Curitiba, PR - Brazil.,Hospital do Rocio, Campo Largo, PR - Brazil
| | - Alexandre Schaan de Quadros
- Sociedade Brasileira de Hemodinâmica e Cardiologia Intervencionista, São Paulo, SP - Brazil.,Instituto de Cardiologia / Fundação Universitária de Cardiologia - IC/FUC, Porto Alegre, RS - Brazil
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15
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16
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Abdelmoneim I, Sadek A, Mosaad MA, Yassin I, Radwan Y, Shokry K, Magdy A, Elsherbeny MY, Abushouk AI. Diagnostic accuracy of multi-slice computed tomography in identifying lesion characteristics in coronary total occlusion. Int J Cardiovasc Imaging 2018; 34:1813-1818. [PMID: 29948635 DOI: 10.1007/s10554-018-1392-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 06/04/2018] [Indexed: 10/14/2022]
Abstract
We performed this study to compare the sensitivity and specificity of multi-slice computed tomography (MSCT) to coronary angiography (CA) in detecting coronary total occlusion (CTO) lesion characteristics. Moreover, we analyzed the association between these characteristics and the risk of revascularization failure. Fifty patients with confirmed CTO diagnosis were tried for revascularization using the antegrade (all 50) or retrograde (in failed nine antegrade interventions) approaches. Each patient underwent CA and MSCT before the intervention and data from both modalities were compared using the SPSS software. Successful revascularization occurred in 36 (72%) and 6 (66.7%) patients of the antegrade and retrograde groups, respectively. Compared to CA, MSCT exhibited high sensitivity in detecting CTO segment calcification (100%), size of the affected vessel (100%, area under the curve [AUC] = 0.82), distal filling of the affected segment (97.7%) and side-branching at the CTO segment (93.3%). However, it had lower sensitivity in detecting collaterals (75%) and the length of the affected segment (87.5%, AUC = 0.77). According to MSCT data, increased occlusion length > 18 mm (p = 0.01), atherosclerotic vessel wall (p = 0.02), small distal vessel size ≤ 2.75 mm (p = 0.002), proximal side-branching (p = 0.01) and calcification of the proximal cap (p = 0.007) or distal stump (p = 0.01) were associated with an increased risk of revascularization failure. MSCT exhibited high sensitivity in identifying several CTO lesion characteristics, such as lesional calcification and size of the affected vessel. However, further research is needed to improve the diagnostic accuracy of this modality and define the predictors of revascularization failure in CTO patients.
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Affiliation(s)
- Islam Abdelmoneim
- Cardiology Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Ayman Sadek
- Cardiology Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | | | - Ibrahim Yassin
- Cardiology Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Yasser Radwan
- Cardiology Department, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
| | - Khalid Shokry
- Specialized Heart Center, Kobri El-Kobba Military Hospital, Cairo, Egypt
| | - Ahmed Magdy
- Specialized Heart Center, Kobri El-Kobba Military Hospital, Cairo, Egypt
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17
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Ma Y, Li D, Li J, Li Y, Bai F, Qin F, Zhou S, Liu Q. Percutaneous coronary intervention versus optimal medical therapy for patients with chronic total occlusion: a meta-analysis and systematic review. J Thorac Dis 2018; 10:2960-2967. [PMID: 29997962 DOI: 10.21037/jtd.2018.04.140] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Background It was under debate whether chronic total occlusion (CTO) patients could benefit from percutaneous coronary intervention (PCI). We sought to compare clinical outcomes of PCI and optimal medical therapy (OMT) in these patients. Methods PubMed, Embase and Cochrane Library were searched for studies enrolling patients with CTO who accepted PCI or OMT. The meta-analysis was performed by using a random-effect model. In addition, subgroup analyses were performed, including patients after propensity-matching and patients with CTO in infarct-related artery (IRA), respectively. Results We identified 5 studies enrolling 4,761 participants in this meta-analysis. In the main analysis, when compared with OMT, PCI was associated with significant improvement in all-cause death [risk ratio (RR) 0.41, 95% CI: 0.35-0.48], cardiac death (RR 0.44, 95% CI: 0.35-0.55) and major adverse cardiac events (MACE) (RR 0.64, 95% CI: 0.43-0.97). But there were no differences in myocardial infarction (MI) and stroke. The results of the propensity-matched subgroup were somewhat consistent with those of the main analysis (all-cause death: RR 0.57, 95% CI: 0.26-0.89; MI: RR 0.54, 95% CI: 0.32-0.77; and MACE: RR 0.76, 95% CI: 0.33-1.18). In IRA subgroup, PCI reduced risks of mortality (all-cause death: RR 0.41, 95% CI: 0.34-0.49; cardiac death: RR 0.44, 95% CI: 0.35-0.56) and MACE (RR 0.71, 95% CI: 0.46-1.10). But no difference was observed in MI. Conclusions PCI was associated with improved survival and reduced MACE relative to OMT.
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Affiliation(s)
- Yingxu Ma
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Dongping Li
- Department of Cardiothoracic Surgery, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Jiayi Li
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Yixi Li
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Fan Bai
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Fen Qin
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Shenghua Zhou
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Qiming Liu
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Changsha 410011, China
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18
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Shatila W, Krajcer Z. Chronic total occlusion: Does anti-platelet choice impact outcomes? Catheter Cardiovasc Interv 2018; 91:7-8. [PMID: 29314641 DOI: 10.1002/ccd.27456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 11/29/2017] [Indexed: 11/05/2022]
Abstract
Chronic total occlusion (CTO) is associated with worse outcomes compared to non CTO percutaneous coronary intervention (PCI). CTO might be associated with vasomotor dysfunction Ticagrelor is a novel P2Y12 inhibitor that increases local adenosine The TIGER-BVS trial plans to assess the impact of using ticagrelor vs. clopidogrel on vasomotor activity and outcomes after successful CTO PCI.
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Affiliation(s)
- Wassim Shatila
- Department of Cardiology, Texas Heart Institute, Houston, Texas.,Department of Cardiology, Baylor College of Medicine, Houston, Texas.,CHI St. Luke's Health-Baylor St. Luke's Medical Center, Houston, Texas
| | - Zvonimir Krajcer
- Department of Cardiology, Texas Heart Institute, Houston, Texas.,Department of Cardiology, Baylor College of Medicine, Houston, Texas.,CHI St. Luke's Health-Baylor St. Luke's Medical Center, Houston, Texas
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