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Seçkin Göbüt Ö, Ünlü S. Predictor of No-Reflow in Patients With ST-Segment Elevation Myocardial Infarction. Angiology 2024; 75:696-697. [PMID: 37768690 DOI: 10.1177/00033197231205122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023]
Abstract
We have carefully read the article titled 'Prognostic Nutritional Index as a Predictor of No-Reflow Occurrence in Patients With ST-Segment Elevation Myocardial Infarction Who Underwent Primary Percutaneous Coronary Intervention' and find it to be of significant interest. The no-reflow phenomenon (NRP) stands as a formidable complication of ST-segment elevation myocardial infarction (STEMI), carrying a high mortality risk. Managing NRP entails pharmacological and mechanical interventions, making its prediction a crucial aspect in the management of STEMI cases. We extend our gratitude to you and the authors for conducting this valuable and thought-provoking study. We anticipate that our insights will serve as a guide for future comprehensive studies in this dynamic area.
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Affiliation(s)
| | - Serkan Ünlü
- Department of Cardiology, University of Gazi, Ankara, Turkey
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Jinnouchi H, Sakakura K, Taniguchi Y, Tsukui T, Watanabe Y, Yamamoto K, Seguchi M, Wada H, Fujita H. Intravascular ultrasound-factors associated with slow flow following rotational atherectomy in heavily calcified coronary artery. Sci Rep 2022; 12:5674. [PMID: 35383228 PMCID: PMC8983755 DOI: 10.1038/s41598-022-09585-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 03/25/2022] [Indexed: 12/18/2022] Open
Abstract
Intravascular ultrasound (IVUS) can provide useful information in patients undergoing complex percutaneous coronary intervention with rotational atherectomy (RA). The association between IVUS findings and slow flow following rotational atherectomy (RA) has not been investigated, although slow flow has been shown to be an unfavorable sign with worse outcomes. The aim of this study was to determine the IVUS-factors associated with slow flow just after RA. We retrospectively enrolled 290 lesions (5316 IVUS-frames) with RA, which were divided into the slow flow group (n = 43 with 1029 IVUS-frames) and the non-slow flow group (n = 247 with 4287 IVUS-frames) based on the presence of slow flow. Multivariate regression analysis assessed the IVUS-factors associated with slow flow. Slow flow was significantly associated with long lesion length, the maximum number of reverberations [odds ratio (OR) 1.49; 95% confidence interval (CI) 1.07–2.07, p = 0.02] and nearly circumferential calcification at minimal lumen area (MLA) (≥ 300°) (OR, 2.21; 95% CI 1.13–4.32; p = 0.02). According to the maximum number of reverberations, the incidence of slow flow was 2.2% (n = 0), 11.9% (n = 1), 19.5% (n = 2), 22.5% (n = 3), and 44.4% (n = 4). In conclusion, IVUS findings such as longer lesion length, the maximum number of reverberations, and the greater arc of calcification at MLA may predict slow flow after RA. The operators need to pay more attention to the presence of reverberations to enhance the procedure safety.
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Affiliation(s)
- Hiroyuki Jinnouchi
- Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, 1-847, Amanuma-cho, Omiya-ku, Saitama, Japan
| | - Kenichi Sakakura
- Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, 1-847, Amanuma-cho, Omiya-ku, Saitama, Japan.
| | - Yousuke Taniguchi
- Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, 1-847, Amanuma-cho, Omiya-ku, Saitama, Japan
| | - Takunori Tsukui
- Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, 1-847, Amanuma-cho, Omiya-ku, Saitama, Japan
| | - Yusuke Watanabe
- Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, 1-847, Amanuma-cho, Omiya-ku, Saitama, Japan
| | - Kei Yamamoto
- Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, 1-847, Amanuma-cho, Omiya-ku, Saitama, Japan
| | - Masaru Seguchi
- Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, 1-847, Amanuma-cho, Omiya-ku, Saitama, Japan
| | - Hiroshi Wada
- Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, 1-847, Amanuma-cho, Omiya-ku, Saitama, Japan
| | - Hideo Fujita
- Division of Cardiovascular Medicine, Saitama Medical Center, Jichi Medical University, 1-847, Amanuma-cho, Omiya-ku, Saitama, Japan
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Reddy S, Rao K R, Kashyap JR, Kadiyala V, Reddy H, Malhotra S, Daggubati R, Kumar S, Soni H, Kaur N, Kaur J, Ramalingam V. Impact of plaque burden and composition on coronary slow flow in ST-segment elevation myocardial infarction undergoing percutaneous coronary intervention: intravascular ultrasound and virtual histology analysis. Acta Cardiol 2021; 76:650-660. [PMID: 32452718 DOI: 10.1080/00015385.2020.1767842] [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] [Indexed: 12/14/2022]
Abstract
AIM Coronary slow flow (SF) is an important complication of percutaneous coronary intervention (PCI) associated with poor prognosis. The aim was to assess grey-scale intravascular ultrasound (IVUS) and virtual histology (VH-IVUS) characteristics of culprit lesion in ST-elevation myocardial infarction (STEMI). METHODS A total of 295 consecutive patients with STEMI underwent coronary angiogram and IVUS. Following PCI, patients divided into two groups; SF (thrombolysis in myocardial infarction [TIMI] flow ≤ 2, n = 74) and normal flow (NF) (TIMI flow >2, n = 221). Coronary plaque burden and its composition in relation to SF were evaluated. RESULTS On grey-scale IVUS, the plaque area (12.3 mm2 vs. 11.5 mm2, p = .01), plaque volume (110.7 mm3 vs. 99.8 mm3, p < .001), lesion external elastic membrane (EEM) cross-sectional area (14.9 mm2 vs. 14.0 mm2, p = .011) and remodelling index (1.3 vs. 1.2, p = .043) were significantly higher in SF group. On VH-IVUS, absolute fibrous volume (48.1 mm3 vs. 41.5 mm3, p ≤ .001), fibrofatty volume (23.8 mm3 vs. 18.6 mm3, p = .015), necrotic core volume (8.3 mm3 vs. 5.5 mm3, p < .001), dense calcium volume (1.2 mm3 vs. 0.6 mm3, p = .003) and thin cap fibroatheroma either single (30.1% vs. 16.1%, p < .001) or multiple (9.6% vs. 1.8%, p < .001) were higher in SF arm. In multivariable analysis, absolute necrotic core volume (odds ratio = 1.159; 95% CI 1.030-1.305, p = .015) was the only independent predictor of SF. CONCLUSIONS Higher necrotic core volume as detected by VH-IVUS may be a potential risk factor for the development of coronary SF phenomenon in patients with STEMI after PCI.
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Affiliation(s)
- Sreenivas Reddy
- Department of Cardiology, Government Medical College and Hospital, Chandigarh, India
| | - Raghavendra Rao K
- Department of Cardiology, Government Medical College and Hospital, Chandigarh, India
| | - Jeet Ram Kashyap
- Department of Cardiology, Government Medical College and Hospital, Chandigarh, India
| | - Vikas Kadiyala
- Department of Cardiology, Government Medical College and Hospital, Chandigarh, India
| | - Hithesh Reddy
- Department of Cardiology, Government Medical College and Hospital, Chandigarh, India
| | - Samir Malhotra
- Department of Pharmacology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | | | - Suraj Kumar
- Department of Cardiology, Government Medical College and Hospital, Chandigarh, India
| | - Hariom Soni
- Department of Pharmacology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Naindeep Kaur
- Department of Cardiology, Government Medical College and Hospital, Chandigarh, India
| | - Jaspreet Kaur
- Department of Cardiology, Government Medical College and Hospital, Chandigarh, India
| | - Vadivelu Ramalingam
- Department of Cardiology, Velammal Medical College Hospital and Research Institute, Madurai, India
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Rao K R, Reddy S, Kashyap JR, Ramalingam V, Dash D, Kadiyala V, Kumar S, Reddy H, Kaur J, Kumar A, Kaur N, Gupta A. Association of culprit lesion plaque characteristics with flow restoration post-fibrinolysis in ST-segment elevation myocardial infarction: an intravascular ultrasound-virtual histology study. Egypt Heart J 2020; 72:86. [PMID: 33296051 PMCID: PMC7726087 DOI: 10.1186/s43044-020-00121-w] [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: 09/17/2020] [Accepted: 11/27/2020] [Indexed: 12/19/2022] Open
Abstract
Background Not every patient achieves normal coronary flow following fibrinolysis in STEMI (ST-segment elevation myocardial infarction). The culprit lesion plaque characteristics play a prominent role in the coronary flow before and during percutaneous coronary intervention. The main purpose was to determine the culprit lesion plaque features by virtual histology-intravascular ultrasound (VH-IVUS) in patients with STEMI following fibrinolysis in relation to baseline coronary angiogram TIMI (thrombolysis in myocardial infarction) flow. Pre-intervention IVUS was undertaken in 61 patients with STEMI after successful fibrinolysis. After the coronary angiogram, they were separated into the TIMI1–2 flow group (n = 31) and TIMI 3 flow group (n = 30). Culprit lesion plaque composition was evaluated by VH-IVUS. Results On gray-scale IVUS, the lesion external elastic membrane cross-sectional area (EEM CSA) was significantly higher in the TIMI 1–2 groups as compared to the TIMI 3 group (15.71 ± 3.73 mm2 vs 13.91 ± 2.94 mm2, p = 0.041) with no significant difference in plaque burden (82.42% vs. 81.65%, p = 0.306) and plaque volume (108.3 mm3 vs. 94.3 mm3, p = 0.194). On VH-IVUS, at the minimal luminal area site (MLS), the fibrous area (5.83 mm2 vs. 4.37 mm2, p = 0.024), necrotic core (NC) area (0.95 mm2 vs. 0.59 mm2, p < 0.001), and NC percentage (11% vs. 7.1%, p = 0.024) were higher in the TIMI 1–2 groups in contrast to the TIMI 3 group. The absolute necrotic core (NC) volume (8.3 mm3 vs. 3.65 mm3, p < 0.001) and NC percentage (9.3% vs. 6.0%, p = 0.007) were significantly higher in the TIMI 1–2 groups as compared to the TIMI 3 group. Absolute dense calcium (DC) volume was higher in TIMI 1–2 groups with a trend towards significance (1.0 mm3 vs.0.75 mm3, p = 0.051). In multivariate analysis, absolute NC volume was the only independent predictor of TIMI 1–2 flow (odds ratio = 1.561; 95% CI 1.202–2.026, p = 0.001). Receiver operating characteristic curves showed absolute NC volume has best diagnostic accuracy (AUC = 0.816, p < 0.001) to predict TIMI 1–2 flow with an optimal cutoff value of 4.5 mm3 with sensitivity and specificity of 79% and 61%, respectively. Conclusions This study exemplifies that the necrotic core component of the culprit lesion plaque in STEMI is associated with the coronary flow after fibrinolysis. The absolute necrotic core volume is a key determinant of flow restoration post-fibrinolysis and aids in prognostication of less than TIMI 3 flow.
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Affiliation(s)
- Raghavendra Rao K
- Department of Cardiology, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India
| | - Sreenivas Reddy
- Department of Cardiology, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India.
| | - Jeet Ram Kashyap
- Department of Cardiology, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India
| | - Vadivelu Ramalingam
- Department of Cardiology, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India
| | - Debabrata Dash
- Department of Cardiology, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India
| | - Vikas Kadiyala
- Department of Cardiology, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India
| | - Suraj Kumar
- Department of Cardiology, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India
| | - Hithesh Reddy
- Department of Cardiology, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India
| | - Jaspreet Kaur
- Department of Cardiology, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India
| | - Ashok Kumar
- Department of Neurology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, 160012, India
| | - Naindeep Kaur
- Department of Cardiology, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India
| | - Anish Gupta
- Department of Cardiology, Government Medical College and Hospital, Sector 32, Chandigarh, 160030, India
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Song HG, Kang SJ, Mintz GS. Value of intravascular ultrasound in guiding coronary interventions. Echocardiography 2018; 35:520-533. [DOI: 10.1111/echo.13837] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Affiliation(s)
- Hae Geun Song
- Department of Cardiology; DeltaHealth Hospital; Shanghai China
| | - Soo-Jin Kang
- Department of Cardiology; Asan Medical Center; University of Ulsan College of Medicine; Seoul South Korea
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Song HG, Kang SJ. Current Clinical Applications of Intravascular Ultrasound in Coronary Artery Disease. CURRENT CARDIOVASCULAR IMAGING REPORTS 2017. [DOI: 10.1007/s12410-017-9424-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sabin P, Koshy AG, Gupta PN, Sanjai PV, Sivaprasad K, Velappan P, Vellikat Velayudhan R. Predictors of no- reflow during primary angioplasty for acute myocardial infarction, from Medical College Hospital, Trivandrum. Indian Heart J 2017; 69 Suppl 1:S34-S45. [PMID: 28400037 PMCID: PMC5388018 DOI: 10.1016/j.ihj.2016.12.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 12/10/2016] [Accepted: 12/12/2016] [Indexed: 01/12/2023] Open
Abstract
Background Primary angioplasty (PCI) for acute myocardial infarction is associated with no-reflow phenomenon, in about 5–25% of cases. Here we analysed the factors predicting no reflow . Methods This was a case control study of consecutive patients with acute myocardial infarction who underwent Primary PCI from August 2014 to February 2015. Results Of 181 patients who underwent primary PCI, 47 (25.9%) showed an angiographic no-reflow phenomenon. The mean age was 59.19 ± 10.25 years and females were 11%. Univariate predictors of no reflow were age >60 years (OR = 6.146, 95%CI 2.937–12.86, P = 0<0.001), reperfusion time >6 h (OR = 21.94, 95%CI 9.402–51.2, P = < 0.001), low initial TIMI flow (≤1) (OR = 12.12, 95%CI 4.117–35.65, P < 0.001), low initial TMPG flow (≤1) (OR = 36.19, 95%CI 4.847–270.2, P < 0.001) a high thrombus burden (OR = 11.04,95%CI 5.124–23.8, P < 0.001), a long target lesion (OR = 8.54, 95%CI 3.794–19.23, P < 0.001), Killip Class III/IV(OR = 2.937,95%CI 1.112–7.756,P = 0.025) and overlap stenting(OR = 3.733,95%CI 1.186–11.75,P = 0.017). Multiple stepwise logistic regression analysis predictors were: longer reperfusion time > 6 h (OR = 13.844, 95%CI 3.214–59.636, P = <0.001), age >60 years (OR = 8.886, 95%CI 2.145–36.80, P = 0.003), a long target lesion (OR = 8.637, 95%CI 1.975–37.768, P = 0.004), low initial TIMI flow (≤1) (OR = 20.861, 95%CI 1.739–250.290, P = 0.017). Conclusions It is important to minimize trauma to the vessel, avoid repetitive balloon dilatations use direct stenting and use the shortest stent if possible.
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Aeinfar K, Firouzi A, Shahsavari H, Sanati H, Kiani R, Shakerian F, Zahed Mehr A. The Predictors of No-Reflow Phenomenon after Primary Angioplasty for Acute Myocardial Infarction. Int Cardiovasc Res J 2016. [DOI: 10.17795/icrj-10(03)107] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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9
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Suda A, Namiuchi S, Kawaguchi T, Nihei T, Takii T, Saji K, Sugie T, Kato A, Shimokawa H. A simple and rapid method for identification of lesions at high risk for the no-reflow phenomenon immediately before elective coronary stent implantation. Heart Vessels 2016; 31:1904-1914. [DOI: 10.1007/s00380-016-0825-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 02/19/2016] [Indexed: 10/22/2022]
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Zhou H, He XY, Zhuang SW, Wang J, Lai Y, Qi WG, Yao YA, Liu XB. Clinical and procedural predictors of no-reflow in patients with acute myocardial infarction after primary percutaneous coronary intervention. World J Emerg Med 2014; 5:96-102. [PMID: 25215156 DOI: 10.5847/wjem.j.issn.1920-8642.2014.02.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2013] [Accepted: 04/16/2014] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The treatment of acute myocardial infarction (AMI) is thought to restore antegrade blood flow in the infarct-related artery (IRA) and minimize ischemic damage to the myocardium as soon as possible. The present study aimed to identify possible clinical predictors for no-reflow in patients with AMI after primary percutaneous coronary intervention (PCI). METHODS A total of 312 consecutive patients with AMI who had been treated from January 2008 to December 2010 at the Cardiology Department of East Hospital, Tongji University School of Medicine were enrolled in this study. Inclusion criteria were: (i) patients underwent successfully primary PCI within 12 hours after the appearance of symptoms; or (ii) patients with ischemic chest pain for more than 12 hours after a successful primary PCI within 24 hours after appearance of symptoms. Exculsion criteria were: (i) coronary artery spasm; (ii) diameter stenosis of the culprit lesion was <50% and coronary blood flow was normal; (iii) patients with severe left main coronary or multivessel disease, who had to require emergency revascularization. According to thrombolysis in myocardial infarction (TIMI), the patients were divided into a reflow group and a no-reflow group. The clinical data, angiography findings and surgical data were compared between the two groups. Univariate and multivariate logistic regressions were used to determine the predictors for no-reflow. RESULTS Fifty-four (17.3%) of the patients developed NR phenomenon after primary PCI. Univariate analysis showed that age, time from onset to reperfusion, systolic blood pressure (SBP) on admission, Killip class of myocardial infarction, intra-aortic balloon pump (IABP) use before primary PCI, TIMI flow grade before primary PCI, type of occlusion, thrombus burden on baseline angiography, target lesion length, reference luminal diameter and method of reperfusion were correlated with no-reflow (P<0.05 for all). Multiple logistic regression analysis identified that age >65 years [OR=1.470, 95% confidence interval (CI) 1.460-1.490, P=0.007], long time from onset to reperfusion >6 hours (OR=1.270, 95%CI 1.160-1.400, P=0.001), low SBP on admission <100 mmHg (OR=1.910, 95%CI 1.018-3.896, P=0.004), IABP use before PCI (OR= 1.949, 95%CI 1.168-3.253, P=0.011), low (≤1) TIMI flow grade before primary PCI (OR=1.100, 95%CI 1.080-1.250, P<0.001), high thrombus burden (OR=1.600, 95%CI 1.470-2.760, P=0.030), and long target lesion (OR=1.948, 95%CI 1.908-1.990, P=0.019) on angiography were independent predictors of no-reflow. CONCLUSION The occurrence of no-reflow after primary PCI for acute myocardial infarction can predict clinical, angiographic and procedural features.
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Affiliation(s)
- Hua Zhou
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Xiao-Yan He
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Shao-Wei Zhuang
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Juan Wang
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Yan Lai
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Wei-Gang Qi
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Yi-An Yao
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Xue-Bo Liu
- Department of Cardiology, East Hospital, Tongji University School of Medicine, Shanghai 200120, China
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Gamou T, Sakata K, Matsubara T, Yasuda T, Miwa K, Inoue M, Kanaya H, Konno T, Hayashi K, Kawashiri M, Yamagishi M. Impact of thin-cap fibroatheroma on predicting deteriorated coronary flow during interventional procedures in acute as well as stable coronary syndromes: insights from optical coherence tomography analysis. Heart Vessels 2014; 30:719-27. [DOI: 10.1007/s00380-014-0542-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 06/27/2014] [Indexed: 12/13/2022]
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Jinnouchi H, Sakakura K, Wada H, Ishida K, Arao K, Kubo N, Sugawara Y, Funayama H, Ako J, Momomura SI. Effect of chronic statin treatment on vascular remodeling determined by intravascular ultrasound in patients with acute myocardial infarction. Am J Cardiol 2014; 113:924-9. [PMID: 24456817 DOI: 10.1016/j.amjcard.2013.11.054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 11/23/2013] [Accepted: 11/23/2013] [Indexed: 12/13/2022]
Abstract
Early statin treatment of patients with acute coronary syndrome results in vascular changes and improved clinical outcomes. However, the influence of chronic statin treatment on the culprit vessel in acute coronary syndrome is not fully understood. The aim of this study was to investigate the morphologic features of the culprit vessel in acute myocardial infarction by comparing patients with and without chronic statin treatment. We enroled consecutive patients with AMI, who had hyperlipidemia and primary percutaneous coronary intervention guided by intravascular ultrasound within 24 hours of symptom onset. Of 155 patients, 73 patients were stratified to the chronic statin group and 82 to the nonstatin group. Intravascular ultrasound in both the groups showed that positive remodeling was significantly less frequent in the chronic statin group (46.6%) compared with the nonstatin group (70.7%; p = 0.001). Necrotic core area was significantly smaller in the chronic statin group (2.2 ± 1.3 mm(2)) compared with the nonstatin group (3.2 ± 2.1 mm(2); p <0.001). Multivariate logistic regression analysis revealed that chronic statin treatment was significantly associated with less positive remodeling (odds ratio 0.283, 95% confidence interval 0.111 to 0.723, p = 0.008). In conclusion, chronic statin treatment reduced positive remodeling in the culprit lesions of patients with acute myocardial infarction.
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Yajima J. What imaging modality do you want to select for prediction of the no-reflow phenomenon? J Cardiol 2013; 62:138-9. [DOI: 10.1016/j.jjcc.2013.05.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 05/14/2013] [Indexed: 11/25/2022]
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Jang JS, Jin HY, Seo JS, Yang TH, Kim DK, Park YA, Cho KI, Park YH, Kim DS. Meta-analysis of plaque composition by intravascular ultrasound and its relation to distal embolization after percutaneous coronary intervention. Am J Cardiol 2013; 111:968-72. [PMID: 23351457 DOI: 10.1016/j.amjcard.2012.12.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 12/05/2012] [Accepted: 12/05/2012] [Indexed: 11/15/2022]
Abstract
Controversies exist regarding the association between plaque composition and distal embolization phenomenon after percutaneous coronary intervention (PCI). We evaluated the effect of plaque characteristics on embolization after PCI by grayscale and virtual histology-intravascular ultrasound (IVUS). We searched PubMed, Ovid MEDLINE, and Cochrane databases for IVUS studies evaluating the coronary plaque characteristics in no reflow, distal embolization, and periprocedural myocardial infarction after PCI. Sixteen studies were included, totaling 1,697 patients who underwent PCI (292 patients with embolization and 1,405 patients without embolization). At the minimum lumen sites, the external elastic membrane (weighted mean difference 2.38 mm(2), 95% confidence interval [CI] 1.02 to 3.74) and the plaque and media cross-sectional areas (weighted mean difference 2.44 mm(2), 95% CI 1.44 to 3.45) were significantly greater in the embolization group than in the no embolization group. Pooled analysis showed that the absolute necrotic core volume (standardized mean difference 0.49, 95% CI 0.13 to 0.85), absolute (standardized mean difference 0.73, 95% CI 0.14 to 1.31) and relative (standardized mean difference 1.02, 95% CI 0.72 to 1.31) necrotic core areas at the minimum lumen sites were significantly greater in the embolization group than in the no embolization group, but the other plaque components were similar in the 2 groups. In conclusion, the necrotic core component derived from virtual histology-IVUS and the morphologic characteristics of plaque derived from grayscale IVUS are closely related to the distal embolization phenomenon after PCI.
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Affiliation(s)
- Jae-Sik Jang
- Department of Cardiology, Busan Paik Hospital, University of Inje College of Medicine, Busan, Korea.
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Kubo T, Matsuo Y, Ino Y, Tanimoto T, Ishibashi K, Komukai K, Kitabata H, Tanaka A, Kimura K, Imanishi T, Akasaka T. Optical coherence tomography analysis of attenuated plaques detected by intravascular ultrasound in patients with acute coronary syndromes. Cardiol Res Pract 2011; 2011:687515. [PMID: 21941667 PMCID: PMC3173965 DOI: 10.4061/2011/687515] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Accepted: 07/14/2011] [Indexed: 11/20/2022] Open
Abstract
Background. Recent intravascular ultrasound (IVUS) studies have demonstrated that hypoechoic plaque with deep ultrasound attenuation despite absence of bright calcium is common in acute coronary syndrome. Such “attenuated plaque” may be an IVUS characteristic of unstable lesion.
Methods. We used optical coherence tomography (OCT) in 104 patients with unstable angina to compare lesion characteristics between IVUS-detected attenuated plaque and nonattenuated plaque.
Results. IVUS-detected attenuated plaque was observed in 41 (39%) patients. OCT-detected lipidic plaque (88% versus 49%, P < 0.001), thin-cap fibroatheroma (48% versus 16%, P < 0.001), plaque rupture (44% versus 11%, P < 0.001), and intracoronary thrombus (54% versus 17%, P < 0.001) were more often seen in IVUS-detected attenuated plaques compared with nonattenuated plaques.
Conclusions. IVUS-detected attenuated plaque has many characteristics of unstable coronary lesion. The presence of attended plaque might be an important marker of lesion instability.
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Affiliation(s)
- Takashi Kubo
- Department of Cardiovascular Medicine, Wakayama Medical University, 811-1, Kimiidera, Wakayama 641-8510, Japan
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A patient with significant slow-flow phenomenon during percutaneous coronary intervention for ST elevation myocardial infarction associated with scattered necrotic core by virtual histology intravascular ultrasound. Cardiovasc Interv Ther 2011; 26:290-5. [PMID: 24122600 DOI: 10.1007/s12928-011-0073-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Accepted: 05/27/2011] [Indexed: 10/18/2022]
Abstract
A 68-year-old man with acute ST elevation myocardial infarction (STEMI) underwent emergent coronary angiography which showed total occlusion in the proximal right coronary artery (RCA). Gray-scale intravascular ultrasound (IVUS) revealed the culprit lesion was expansively remodeled and contained ruptured and echolucent plaques with spotty calcification, whereas thin-capped fibroatheroma and a large amount of scattered necrotic core were observed by virtual histology (VH)-IVUS. After stent implantation in the proximal RCA under a filter protection, filter-no-reflow phenomenon occurred and thrombus-like defect was observed in the mid RCA. Under these conditions, VH-IVUS detected a large amount of scattered necrotic core in the mid RCA. We suggest scattered necrotic core detected by VH-IVUS may be associated with slow-flow phenomenon during percutaneous coronary intervention in our patient with STEMI.
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17
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Utsunomiya M, Hara H, Sugi K, Nakamura M. Relationship between tissue characterisations with 40 MHz intravascular ultrasound imaging and slow flow during coronary intervention. EUROINTERVENTION 2011; 7:340-6. [DOI: 10.4244/eijv7i3a58] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Dong-bao L, Qi H, Zhi L, Shan W, Wei-ying J. Predictors and long-term prognosis of angiographic slow/no-reflow phenomenon during emergency percutaneous coronary intervention for ST-elevated acute myocardial infarction. Clin Cardiol 2011; 33:E7-12. [PMID: 21184547 DOI: 10.1002/clc.20634] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVE Angiographic slow/no-reflow during emergency percutaneous coronary intervention (PCI) in patients with ST-elevated acute myocardial infarction (AMI) may result in unfavorable outcomes. The aim of our study was to investigate the clinical factors and angiographic findings that predict slow/no-reflow phenomenon and the long-term prognosis of AMI patients with angiographic slow/no-reflow. METHODS A total of 210 consecutive AMI patients, who underwent primary PCI within 12 hours of symptom onset were divided into a normal flow group (thrombolysis in myocardial infarction [TIMI] flow grade 3, n = 169) and a slow/no-reflow group (≤TIMI flow grade 2, n = 41), based on cineangiograms performed during PCI. RESULTS A total of 41 patients (19.5%) developed slow/no-reflow phenomenon. Univariate analysis showed that delayed reperfusion, high thrombus burden on baseline angiography, and acute hyperglycemia all correlated with slow/no-reflow (P < 0.05 for all). Multivariate analysis revealed that hyperglycemia on admission (≥10 mmol/L; odds ratio [OR]: 1.7, 95% confidence interval [CI]: 1.423-2.971, P = 0.012), reperfusion time (≥6 h; OR:1.4, 95% CI: 1.193-1.695, P = 0.040), and high thrombus burden (OR: 1.6, 95% CI: 1.026-2.825, P = 0.031) were significant and independent predictors of angiographic slow/no-reflow. The 6-month mortality and incidence of major adverse cardiac and cerebrovascular events (MACCE) were significantly higher in the slow/no-reflow group than in the normal flow group. Angiographic slow/no-reflow was independently predictive of MACCE (hazard ratio [HR]: 2.642, 95% CI: 1.304-5.932, P = 0.028). CONCLUSION Delayed reperfusion, high thrombus burden on baseline angiography, and blood glucose level on admission can be used to stratify AMI patients into a lower or higher risk for angiographic slow/no-reflow during PCI. In addition, angiographic slow/no-reflow predicts an adverse outcome in AMI patients.
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Affiliation(s)
- Li Dong-bao
- Department of Cardiology, Xuanwu Hospital, Capital Medical University, Beijing, China
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19
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Harigaya H, Motoyama S, Sarai M, Inoue K, Hara T, Okumura M, Naruse H, Ishii J, Hishida H, Ozaki Y. Prediction of the no-reflow phenomenon during percutaneous coronary intervention using coronary computed tomography angiography. Heart Vessels 2010; 26:363-9. [PMID: 21057798 DOI: 10.1007/s00380-010-0059-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2009] [Accepted: 04/30/2010] [Indexed: 10/18/2022]
Abstract
Coronary computed tomography angiography (CTA) can assess plaque characteristics and plaque size noninvasively. The purpose of this study was to investigate whether coronary CTA before percutaneous coronary intervention (PCI) can predict the no-reflow phenomenon during PCI. Seventy-eight patients [acute coronary syndrome (ACS) = 43, stable angina pectoris (SAP) = 35, male/female = 72/6, age: 65 ± 10 years] who underwent 16- or 64-slice CTA in the 4 weeks before PCI were enrolled. The low attenuation plaque size on CTA was compared between patients with (NR+) and without the no-reflow phenomenon (NR-). No-reflow phenomenon was observed in 11 patients, including 10 patients with ACS and 1 patient with SAP. Low attenuation plaque was detected in 9 (82%) NR(+) lesions and 35 (52%) NR(-) lesions. The length of low attenuation plaque was significantly longer in NR(+) than in NR(-) patients (9.0 ± 6.5 vs. 1.6 ± 2.7 mm, p < 0.0001). On step-wise regression analysis, ACS (p = 0.036, 95% CI = 0.009-0.258) and the presence of low attenuation plaque with a length >4.7 mm (p < 0.001, 95% CI = 0.447-0.778) were significant independent predictors of NR(-) no-reflow phenomenon. Low attenuation plaque with lesion length of >4.7 mm on coronary CTA and ACS were the significant predictors for the no-reflow phenomenon during PCI. Coronary CTA assessment before PCI would be useful to predict coronary events during PCI in advance.
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Affiliation(s)
- Hiroto Harigaya
- Department of Cardiology, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
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20
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Lin CP, Honye J, Saito S. New modality for evaluating plaque characteristics of the culprit lesion in a patient with acute coronary syndrome and no reflow phenomenon. Int Heart J 2010; 51:207-10. [PMID: 20558912 DOI: 10.1536/ihj.51.207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
No reflow phenomenon during percutaneous coronary intervention (PCI) for acute coronary syndrome (ACS) has an unfavorable outcome. Previously, some investigators have tried to determine the predictors of this phenomenon, but there are still controversies as to whether it is possible to make predictions beforehand. Here we report the first clinical case by intravascular ultrasound (IVUS) with a newly designed pattern recognition algorithm to evaluate the tissue characteristics of the culprit lesion in a 64-year-old patient with ACS who suffered from no reflow phenomenon during PCI. We also reveal the plaque composition of the culprit lesion of another ACS patient without no reflow as well as a stable angina pectoris patient. The percentage of necrotic tissue was higher in the culprit lesion in a patient with no reflow than in the others. In conclusion, a new spectral similarity concept of IVUS is promising in differentiating ambiguous tissue characterization results.
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Affiliation(s)
- Chia-pin Lin
- First Division of the Department of Cardiology, Chang Gung Memorial Hospital, Linkou, Taiwan
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21
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Hong YJ, Jeong MH, Kim SW, Choi YH, Ma EH, Ko JS, Lee MG, Park KH, Sim DS, Yoon NS, Yoon HJ, Kim KH, Park HW, Kim JH, Ahn Y, Cho JG, Park JC, Kang JC. Relation between plaque components and plaque prolapse after drug-eluting stent implantation--virtual histology-intravascular ultrasound. Circ J 2010; 74:1142-51. [PMID: 20453386 DOI: 10.1253/circj.cj-09-0781] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND It is not well known which plaque components are associated with the development of plaque prolapse (PP) and what are the major components in prolapsed plaque. The relationship between pre-stenting plaque components and post-stenting PP was assessed and the plaque components of prolapsed plaque were evaluated in patients who underwent drug-eluting stent (DES) implantation using virtual histology-intravascular ultrasound (VH-IVUS). METHODS AND RESULTS The study group consisted of 132 patients who underwent DES implantation and pre- and post-stenting VH-IVUS. Of these patients, 68 patients had 76 PP lesions and 64 patients had 76 non-PP lesions. Intra-stent PP volume was 3.6+/-1.5 mm(3). Plaque volume was significantly greater and absolute fibrotic (FT) and necrotic core (NC) volumes were significantly greater in PP lesions compared with non-PP lesions. On multivariate analysis, absolute NC (odds ratios [OR]=1.14, P<0.001) and FT volume (OR =1.09, P<0.001) were independently associated with the development of PP. In intra-stent prolapsed plaque the FT component was greatest, but the NC component was also large, and %NC volume correlated positively with Deltacreatine kinase-MB (r=0.489, P<0.001) and Deltatroponin-I (r=0.679, P<0.001), and %FT volume correlated negatively with DeltaCK-MB (r=-0.539, P<0.001) and Deltatroponin-I. CONCLUSIONS NC and FT components were associated with development of PP; and NC and FT components in prolapsed plaque were associated with cardiac enzyme elevation after DES implantation.
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Affiliation(s)
- Young Joon Hong
- Heart Research Center of Chonnam National University Hospital, Gwangju, Korea
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22
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Kimura S, Kakuta T, Yonetsu T, Suzuki A, Iesaka Y, Fujiwara H, Isobe M. Clinical significance of echo signal attenuation on intravascular ultrasound in patients with coronary artery disease. Circ Cardiovasc Interv 2009; 2:444-54. [PMID: 20031755 DOI: 10.1161/circinterventions.108.821124] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
BACKGROUND Atherosclerotic plaque that shows echo signal attenuation (EA) without associated bright echoes is sometimes observed by intravascular ultrasound but its clinical significance remains unclear. We investigated the impact of EA on coronary perfusion and evaluated the pathological features of plaque with EA. METHODS AND RESULTS We studied 687 native coronary lesions in 687 consecutive patients (336 with acute coronary syndrome and 351 with stable angina pectoris) who underwent intravascular ultrasound before percutaneous coronary intervention. By subgroup analysis, 60 lesions (30 lesions with EA) treated with directional coronary atherectomy underwent pathological examination. The Thrombolysis in Myocardial Infarction (TIMI) flow grade and myocardial blush grade after percutaneous coronary intervention were compared between lesions with and without EA in 627 lesions except directional coronary atherectomy subgroup. EA was observed in 245 lesions (35.7%), and coronary flow after percutaneous coronary intervention was worse for lesions with EA than without (final TIMI grade of 0 to 2: 15.4% versus 2.4%, P<0.001; final myocardial blush grade of 0 to 2: 45.6% versus 21.4%, P<0.001). Multivariate analysis revealed a significant association between no reflow (TIMI grade 0 to 2) and EA (odds ratio, 5.59; 95% CI, 2.64 to 11.85; P<0.001), a baseline TIMI grade of 0 to 2 (odds ratio, 5.91; 95% CI, 2.79 to 12.5; P<0.001), and a large reference area (odds ratio, 3.08; 95% CI, 1.40 to 6.76; P=0.005) after controlling for other associated factors. Pathological examination revealed a significantly higher frequency of lipid-rich plaque with microcalcification in lesions with EA. CONCLUSIONS Atherosclerotic plaque with EA showed a significant association with no reflow after percutaneous coronary intervention, suggesting the existence of fragile components susceptible to distal embolization.
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Affiliation(s)
- Shigeki Kimura
- Department of Cardiovascular Medicine, Tokyo Medical and Dental University, Tokyo, Japan
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23
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Predictors and short-term prognosis of angiographically detected distal embolization after emergency percutaneous coronary intervention for ST-elevation acute myocardial infarction. Clin Res Cardiol 2009; 98:773-9. [DOI: 10.1007/s00392-009-0066-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2009] [Accepted: 08/07/2009] [Indexed: 10/20/2022]
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24
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Rezkalla SH, Kloner RA. Coronary no-reflow phenomenon: from the experimental laboratory to the cardiac catheterization laboratory. Catheter Cardiovasc Interv 2009; 72:950-7. [PMID: 19021281 DOI: 10.1002/ccd.21715] [Citation(s) in RCA: 153] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Coronary no-reflow occurs commonly during acute percutaneous coronary intervention, particularly in patients with acute myocardial infarction and those with degenerated vein grafts. It is associated with a guarded prognosis, and thus needs to be recognized and treated promptly. The pathophysiology originates during the ischemic phase and is characterized by localized and diffuse capillary swelling and arteriolar endothelial dysfunction. In addition, leukocytes become activated and are attracted to the lumen of the capillaries, exhibit diapedesis and may contribute to cellular and intracellular edema and clogging of vessels. At the moment of perfusion, the sudden rush of leukocytes and distal atheroemboli further contributes to impaired tissue perfusion. Shortening the door-to-balloon time, use of glycoprotein IIb/IIIa platelet receptor inhibitors and distal protection devices are predicted to limit the development of no-reflow during percutaneous interventions. Distal intracoronary injection of verapamil, nicardipine, adenosine, and nitroprusside may improve coronary flow in the majority of patients. Hemodynamic support of the patient may be needed in some cases until coronary flow improves.
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Affiliation(s)
- Shereif H Rezkalla
- Department of Cardiology, Marshfield Clinic, Marshfield, Wisconsin 54449, USA.
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25
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Attenuated Plaque Detected by Intravascular Ultrasound. JACC Cardiovasc Interv 2009; 2:65-72. [DOI: 10.1016/j.jcin.2008.08.022] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2008] [Accepted: 08/30/2008] [Indexed: 12/13/2022]
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26
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Kirma C, Izgi A, Dundar C, Tanalp AC, Oduncu V, Aung SM, Sonmez K, Mutlu B, Ozdemir N, Erentug V. Clinical and procedural predictors of no-reflow phenomenon after primary percutaneous coronary interventions: experience at a single center. Circ J 2008; 72:716-21. [PMID: 18441449 DOI: 10.1253/circj.72.716] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND The aim of the study was to identify clinical factors, angiographic findings, and procedural features that predict no-reflow phenomenon (Thrombolysis In Myocardial Infarction (TIMI) flow grade < or =2) in patients with acute myocardial infarction (AMI) who undergo primary percutaneous coronary intervention (PCI). METHODS AND RESULTS A series of 382 consecutive patients with AMI underwent primary PCI within 12 h of symptom onset. Patients with ischemic symptoms continuing for more than 12 h were also included. Clinical, angiographic and procedural data were collected for each subject. Ninety-three (24.3%) of the patients developed no-reflow phenomenon, and their findings were compared with those of the reflow group. Univariate analysis showed that advanced age (>60 years), delayed reperfusion (> or =4 h), low (< or =1) TIMI flow prior to PCI, cut-off type total occlusion, high thrombus burden on baseline angiography, long target lesion (>13.5 mm) and large vessel diameter all correlated with no-reflow (p<0.05 for all). Multiple logistic regression analysis identified that advanced age (odds ratio (OR) 1.04, p=0.001), delayed reperfusion (OR 1.4, p=0.0004), low TIMI flow before primary PCI (OR 1.1, p=0.0002), target lesion length (OR 5.1, p=0.0003) and high thrombus burden (OR 1.6, p=0.03) on angiography as independent predictors of no-reflow phenomenon. CONCLUSION The occurrence of no-reflow phenomenon after primary PCI can be predicted using simple clinical, angiographic and procedural features. In this selected group of patients, adjunctive pharmacotherapy and/or distal protection device may be of value.
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Affiliation(s)
- Cevat Kirma
- Cardiology, Kartal Kosuyolu Yuksek Ihtisas Education and Research Hospital, Istanbul, Turkey.
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Nakazawa G, Tanabe K, Onuma Y, Yachi S, Aoki J, Yamamoto H, Higashikuni Y, Yagishita A, Nakajima H, Hara K. Efficacy of culprit plaque assessment by 64-slice multidetector computed tomography to predict transient no-reflow phenomenon during percutaneous coronary intervention. Am Heart J 2008; 155:1150-7. [PMID: 18513532 DOI: 10.1016/j.ahj.2008.01.006] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2007] [Accepted: 01/16/2008] [Indexed: 01/23/2023]
Abstract
BACKGROUND It has been reported that multidetector spiral computed tomography (MDCT) allows the classification of coronary plaques by measuring computed tomography (CT) density values. However, the impact of CT density values in culprit lesions on the occurrence of transient no-reflow during percutaneous coronary intervention (PCI) has not been investigated. METHODS The study population consisted of 51 consecutive patients who were diagnosed as having coronary artery disease by 64-slice MDCT before PCI. The CT density values were measured in multiple cross-sectional images along the plaque by 5-pixel regions of interest at multiple sites in the culprit plaque. The measurements were performed by 2 physicians who were unaware of the outcome of PCI. In addition, we describe a new observation noted on MDCT: from the formal resemblance to a ring, we dubbed these images as showing a "signet ring-like appearance." RESULTS Of the total 51 patients, 9 had transient no-reflow during the procedure. There was a significant difference in CT density of the culprit plaque between patients with transient no-reflow and those without (67.0 +/- 10.1 vs 97.8 +/- 37.2 Hounsfield units, P = .018). In addition, a signet ring-like appearance was observed more frequently in patients with transient no-reflow (55.6% vs 16.7%, P = .013). By multivariate analysis, low CT density value and ejection fraction were identified as independent predictors of transient no-reflow. CONCLUSIONS The assessment of plaque characteristics by MDCT might be useful for the prediction of transient no-reflow during PCI.
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Affiliation(s)
- Gaku Nakazawa
- Division of Cardiology, Mitsui Memorial Hospital, Tokyo, Japan
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28
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Hassani SE. Arterial remodeling after acute myocardial infarction. Am J Cardiol 2008; 101:1521-2. [PMID: 18471476 DOI: 10.1016/j.amjcard.2008.02.073] [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] [Received: 02/11/2008] [Revised: 02/21/2008] [Accepted: 02/26/2008] [Indexed: 11/18/2022]
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Higashikuni Y, Tanabe K, Tanimoto S, Aoki J, Yamamoto H, Nakazawa G, Chihara R, Onuma Y, Ohtsuki S, Yagishita A, Yachi S, Nakajima H, Hara K. Impact of Culprit Plaque Composition on the No-Reflow Phenomenon in Patients With Acute Coronary Syndrome An Intravascular Ultrasound Radiofrequency Analysis. Circ J 2008; 72:1235-41. [DOI: 10.1253/circj.72.1235] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Kengo Tanabe
- Division of Cardiology, Mitsui Memorial Hospital
| | | | - Jiro Aoki
- Division of Cardiology, Mitsui Memorial Hospital
| | | | | | - Ruri Chihara
- Division of Cardiology, Mitsui Memorial Hospital
| | | | | | | | - Sen Yachi
- Division of Cardiology, Mitsui Memorial Hospital
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Yao GH, Zhang C, Sun FR, Zhang M, Zhao YX, Zhang PF, Zhong L, Ding SF, Chen WQ, Li XN, Zhang Y. Quantification of transmural gradient of blood flow in myocardial ischemia with real-time myocardial contrast echocardiography and dipyridamole stress test. ULTRASOUND IN MEDICINE & BIOLOGY 2008; 34:22-30. [PMID: 17854984 DOI: 10.1016/j.ultrasmedbio.2007.06.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2007] [Revised: 06/08/2007] [Accepted: 06/20/2007] [Indexed: 05/17/2023]
Abstract
Transmural redistribution of myocardial blood flow (MBF) is the earliest sign of myocardial ischemia. We aimed to evaluate the ability of real-time myocardial contrast echocardiography (MCE) combined with dipyridamole stress to quantify the transmural gradient of MBF during graded coronary stenosis. Real-time MCE was performed in 14 open-chest dogs at seven experimental stages: baseline; hyperemia induced by 6-min infusion of dipyridamole; 50%, 75% and 90% reduction of hyperemic flow after constriction in each stage for 10 min; reperfusion for 10 min; and subtotal occlusion of the left anterior descending coronary artery (LAD) for 90 min. We obtained MCE perfusion parameters from subendocardial (A-endo, beta-endo and A x beta-endo) and subepicardial (A-epi, beta-epi and A x beta-epi) layers of the ventricular septum and calculated their transmural gradients (A-EER, beta-EER and A x beta-EER) and systolic wall thickening (SWT). The sensitivity and specificity of each parameter for predicting 75% reduction of hyperemic flow, which was defined as mild myocardial ischemia, were derived by receiver operating characteristic (ROC) curve analysis. No transmural gradients were found at baseline; during maximal hyperemia and 50% reduction of hyperemic flow. beta-endo, A x beta-endo, beta-EER and A x beta-EER decreased significantly when the hyperemic flow was reduced by 75% or more. In contrast, SWT remained unchanged until the hyperemic flow was reduced by 90%. Among all parameters measured, beta-EER and A x beta-EER had the highest and SWT the lowest sensitivity and specificity in predicting mild myocardial ischemia. In conclusion, real-time MCE combined with dipyridamole stress allows for quantification of the transmural gradient of MBF. beta-EER and A x beta-EER are more sensitive than SWT and other MCE parameters in detecting mild myocardial ischemia.
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Affiliation(s)
- Gui-Hua Yao
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Shandong University Qilu Hospital, Jinan, Shandong, China
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31
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Stoel MG, Marques KM, de Cock CC, Bronzwaer JG, Birgelen CV, Zijlstra F. High dose adenosine for suboptimal myocardial reperfusion after primary PCI: A randomized placebo-controlled pilot study. Catheter Cardiovasc Interv 2007; 71:283-9. [DOI: 10.1002/ccd.21334] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
No-reflow during percutaneous coronary intervention (PCI) is observed most commonly during saphenous vein graft intervention, rotational atherectomy and primary PCI for acute ST-elevation myocardial infarction. The contributions of distal embolization and ischemia/reperfusion injury to the pathogenesis of no-reflow vary in these settings, as does prevention and management. Prevention of no-reflow in these high-risk groups is the best treatment strategy, employing antiplatelet agents, vasodilators and/or mechanical devices to prevent distal embolization. Once mechanical factors are excluded as a cause for reduced epicardial flow, the treatment of established no-reflow is mainly pharmacologic, since the obstruction occurs at the level of the microvasculature. Compared with patients in whom no-reflow is transient, refractory no-reflow is associated with a markedly increased risk of 30-day mortality.
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Affiliation(s)
- William J van Gaal
- Department of Cardiology, Level 2, John Radcliffe Hospital, Oxford, OX3 9DU, UK.
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Okura H, Taguchi H, Kubo T, Toda I, Yoshida K, Yoshiyama M, Yoshikawa J. Atherosclerotic Plaque With Ultrasonic Attenuation Affects Coronary Reflow and Infarct Size in Patients With Acute Coronary Syndrome An Intravascular Ultrasound Study. Circ J 2007; 71:648-53. [PMID: 17456986 DOI: 10.1253/circj.71.648] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND No reflow following percutaneous coronary intervention (PCI) is a major concern in patients with acute coronary syndrome (ACS) and it may be influenced by the preexisting plaque type. METHODS AND RESULTS To evaluate the impact of plaque characteristics on coronary reflow following PCI in patients with ACS, a total of 110 patients (89 acute myocardial infarction, 21 unstable angina) were assessed by intravascular ultrasound. Plaque type was categorized as either atherosclerotic plaque without ultrasonic attenuation (group 1) or atherosclerotic plaque with attenuation (group 2). External elastic membrane, plaque plus media, and lumen area were measured. Coronary flow was assessed by Thrombolysis in Myocardial Infarction (TIMI) grade and TIMI frame count. Although the final TIMI frame count was similar between the 2 groups, TIMI frame count immediately after the first balloon inflation was significantly higher in group 2 (p=0.03). Despite the similar final TIMI grade and TIMI frame count, peak creatine kinase level was significantly higher (3,035+/-2,553 vs 1,950+/-1,958 IU/L, p=0.04) and fatal arrhythmia more frequently observed (16.4% vs 2.7%, p=0.04) in group 2 than in group 1. CONCLUSIONS Atherosclerotic plaque with ultrasonic attenuation may be related to a transient deterioration in coronary flow and as a result larger infarct size and higher incidence of fatal arrhythmia following PCI in patients with ACS. These results may help in selecting lesions suitable for distal protection devices.
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Affiliation(s)
- Hiroyuki Okura
- Division of Cardiology, Bell Land General Hospital, Sakai, Japan.
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Hassani SE, Mintz GS, Fong HS, Kim SW, Xue Z, Pichard AD, Satler LF, Kent KM, Suddath WO, Waksman R, Weissman NJ. Negative Remodeling and Calcified Plaque in Octogenarians With Acute Myocardial Infarction. J Am Coll Cardiol 2006; 47:2413-9. [PMID: 16781368 DOI: 10.1016/j.jacc.2005.11.091] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2005] [Revised: 11/22/2005] [Accepted: 11/28/2005] [Indexed: 11/24/2022]
Abstract
OBJECTIVES The goal of this study was to use intravascular ultrasound (IVUS) to compare octogenarians versus patients <65 years of age with regard to culprit lesion morphology in acute myocardial infarction (MI). BACKGROUND Although octogenarians represent the fastest-growing segment of our population and have a higher risk profile, they are underrepresented in therapeutic trials. METHODS Between 2002 and 2005, 42 octogenarians and 52 patients <65 years of age underwent pre-intervention IVUS within 2 days from onset of an MI. Qualitative and quantitative measurements were performed at the lesion site and at the proximal and distal references. Positive remodeling was defined as a remodeling index (lesion/mean reference arterial area) > or =1. RESULTS Elderly patients mostly (71%) presented with non-ST-segment elevation myocardial infarction (NSTEMI), whereas patients <65 years of age presented almost equally with ST-segment elevation myocardial infarction (STEMI) and NSTEMI (56% vs. 44%). The frequency of rupture/dissection was greater in the <65-year-old group (32% vs. 9%, p = 0.009), and culprit lesions contained more thrombus in this group (14% vs. 2%, p = 0.04). Conversely, in octogenarians, lesions were predominantly calcified (57% vs. 10%, p < 0.001) and longer (20.9 +/- 7.8 mm vs. 16.6 +/- 6.1 mm, p = 0.004) with less positive remodeling (19% vs. 56%, p < 0.001). On multivariant logistic regression analysis, age was the only independent predictor of calcified plaque (p = 0.02) and remodeling (p = 0.005). CONCLUSIONS Negative remodeling and calcified plaque with rare plaque ruptured were common in elderly people with acute MI. These findings may contribute to the difference in clinical presentation and may suggest a different pathophysiologic mechanism of MI in octogenarians.
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Affiliation(s)
- Salah-Eddine Hassani
- Cardiovascular Research Institute/Medstar Research Institute, Washington Hospital Center, Washington, DC 20010, USA
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von Birgelen C, Hartmann M, Mintz GS, Böse D, Eggebrecht H, Neumann T, Gössl M, Wieneke H, Schmermund A, Stoel MG, Verhorst PMJ, Erbel R. Remodeling Index Compared to Actual Vascular Remodeling in Atherosclerotic Left Main Coronary Arteries as Assessed With Long-Term (≥12 Months) Serial Intravascular Ultrasound. J Am Coll Cardiol 2006; 47:1363-8. [PMID: 16580523 DOI: 10.1016/j.jacc.2005.11.055] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2005] [Revised: 10/26/2005] [Accepted: 11/08/2005] [Indexed: 10/24/2022]
Abstract
OBJECTIVES We present the remodeling index (RI) versus serial intravascular ultrasound (IVUS) data. BACKGROUND The RI, derived by comparing lesion external elastic membrane (EEM) cross-sectional area versus the reference at one time point, is used in various IVUS studies as a substitute of true remodeling (change in EEM over time), assuming that it represents true remodeling. METHODS We studied 46 non-stenotic left main arteries using serial IVUS (follow-up 18 +/- 8 months). Plaques were divided into subgroups according to the follow-up RI: follow-up RI >1 (n = 27) versus follow-up RI < or =1 (n = 19). RESULTS Lesions with a follow-up RI >1 had an increase in lumen despite an increase in plaque because of an increase in EEM. Conversely, lesions with a follow-up RI < or =1 had a reduction in lumen as a result of both a plaque increase and EEM decrease. Overall, the follow-up RI correlated directly with changes in lesion site EEM (baseline-to-follow-up). Although there was no correlation between the follow-up RI and changes in reference EEM area, changes in reference EEM area did correlate directly with changes in lesion EEM area. In nearly 90% of lesions with a follow-up RI >1, there was a previously documented increase in EEM area. Using multivariate linear regression analysis, the follow-up RI was dependent on the baseline RI, the increase in lesion EEM area, and the decrease in reference EEM area. The follow-up RI was not dependent on changes in lesion plaque area. CONCLUSIONS The vast majority of left main lesions with a remodeling index >1 had evidence of a previous increase in lesion-site EEM area.
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Katayama T, Kubo N, Takagi Y, Funayama H, Ikeda N, Ishida T, Hirahara T, Sugawara Y, Yasu T, Kawakami M, Saito M. Relation of atherothrombosis burden and volume detected by intravascular ultrasound to angiographic no-reflow phenomenon during stent implantation in patients with acute myocardial infarction. Am J Cardiol 2006; 97:301-4. [PMID: 16442385 DOI: 10.1016/j.amjcard.2005.08.043] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2005] [Revised: 08/22/2005] [Accepted: 08/22/2005] [Indexed: 11/15/2022]
Abstract
This study investigated the mechanism of occurrence of the no-reflow phenomenon during stent implantation in patients with acute myocardial infarction (AMI) using intravascular ultrasound (IVUS) with volumetric analysis. Of 70 patients with AMI who underwent IVUS-guided stent implantation within 24 hours of symptom onset, 12 developed decreased Thrombolysis In Myocardial Infarction flow grade during stent implantation and without subsequent restoration to Thrombolysis In Myocardial Infarction flow grade before stenting. External elastic membrane cross-sectional area and maximum diameter at the culprit lesion as measured by IVUS before stent implantation were significantly larger in the no-reflow group (n = 12) than in the normal reflow group (n = 58; 20.1 +/- 6.5 vs 16.4 +/- 4.3 mm2, p = 0.015 for cross-sectional area and 5.2 +/- 0.9 vs 4.8 +/- 0.6 mm, p = 0.049 for maximum diameter). Plaque volume, volumetric plaque burden (plaque volume/external elastic membrane volume), and change in plaque volume during stent implantation (plaque volume after vs before) were significantly greater in the no-reflow group than in the normal reflow group (239 +/- 142 vs 178 +/- 72 mm3, p = 0.030; 0.76 +/- 0.07 vs 0.71 +/- 0.06, p = 0.010; and -46 +/- 63 vs -11 +/- 37 mm3, p = 0.013, respectively). In conclusion, high atherothrombotic burden and decreased plaque volume as detected by IVUS may be risk factors for development of the no-reflow phenomenon during stent implantation in patients with AMI.
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Affiliation(s)
- Takuji Katayama
- The Cardiovascular Division, First Department of Integrated Medicine, Omiya Medical Center, Jichi Medical School, Saitama, Japan
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Hara M, Saikawa T, Tsunematsu Y, Sakata T, Yoshimatsu H. Predicting No-reflow Based on Angiographic Features of Lesions in Patients with Acute Myocardial Infarction. J Atheroscler Thromb 2005; 12:315-21. [PMID: 16394615 DOI: 10.5551/jat.12.315] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVES We tried to elucidate angiographical predictors of no-reflow and to determine a preferable recanalization therapy based on the morphology of lesions. METHODS Seventy-six patients were randomly assigned into groups to receive primary angioplasty (n = 41) or intracoronary thrombolysis (n = 35). Based on angiography, occlusive infarct-related lesions were divided into thrombus-rich and hard plaque lesions. The outcome of the two therapies used for each lesion was compared. RESULTS The incidence of no-reflow was higher in the thrombus-rich than hard plaque lesions (38 percent vs. 0 percent, p = 0.006); the left ventricular ejection fraction in the chronic phase was lower (46 +/- 6 percent vs. 55 +/- 5 percent, p < 0.001) for primary angioplasty than thrombolysis. No-reflow was not observed in the hard plaque lesions. However, the incidence of additional reperfusion therapy (88 percent vs. 8 percent, p < 0.001) was higher in the patients who underwent thrombolysis rather than primary angioplasty. CONCLUSIONS We suggest that thrombus-rich lesions in primary angioplasty may predict no-reflow in acute myocardial infarction, and thrombolysis prior to angioplasty may be preferable for these lesions. We also suggest that primary angioplasty may be more effective than thrombolysis for hard plaque lesions.
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Affiliation(s)
- Masahide Hara
- Internal Medicine 1, School of Medicine, Oita University, Oita, Japan.
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Liu J, Tanaka N, Murata K, Ueda K, Wada Y, Oyama R, Hamada Y, Hadano Y, Fujii T, Matsuzaki M. Echocardiographic Predictors of Remote Outcome in Patients With Angiographically Successful Reflow After Acute Myocardial Infarction. Circ J 2004; 68:1004-10. [PMID: 15502380 DOI: 10.1253/circj.68.1004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND The angiographically no-reflow phenomenon after percutaneous coronary intervention (PCI) predicts poor left ventricular (LV) functional recovery and a high risk of cardiac events in patients with their first acute myocardial infarction (AMI). However, risk factors of long-term adverse outcome for patients with angiographically successful reflow (TIMI (Thrombolysis in Myocardial Infarction) flow grade 3) for the AMI remain unknown. METHODS AND RESULTS Of 168 echocardiograms were performed before PCI and at discharge, 113 were suitable for analysis. Clinical, angiographic, and echocardiographic variables were submitted to statistical analysis to detect the risk factors of cardiac events. During the follow-up period of 46+/-20 months, 31 patients had cardiac events, though there were no cardiac deaths. The 2 most important risk factors for congestive heart failure (CHF) or total cardiac events were LV dilation (chi-square: 7.5 and 9.4; both p<0.01) and pseudonormal transmitral flow pattern (PN, chi-square: 4.9, p<0.05 and 6.7, p<0.01, respectively). However, only multivessel disease (chi-square: 9.4, p=0.05) became the predictor for revascularization after PCI. The incidence of CHF or total cardiac events in patients with PN and LV dilation at discharge determined by the Kaplan-Meier method were significantly higher than those with normal or abnormal relaxation transmitral flow pattern (log-rank: 41 and 27, both p<0.001) and no LV dilation (log-rank: 20 and 20, both p<0.001). CONCLUSION Poor LV diastolic function and LV dilation at discharge are predictors of the cardiac events in patients in whom epicardial coronary flow was well-restored after PCI for the first AMI.
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Affiliation(s)
- Jinyao Liu
- Department of Cardiovascular Medicine, Yamaguchi University School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
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