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Cortés C, Fernández-Corredoira PM, Liu L, López-Palop R, Rivero F, Jiménez O, Freites A, Goncalves-Ramirez LR, Minguito C, Concepción R, Pérez A, Del Val D, Leithod G, Oberhuber-Kurth J, Amat-Santos IJ, Diarte JA, San Román JA, Ortas Nadal MR, Gutiérrez-Chico JL. Long-term prognostic value of quantitative-flow-ratio-concordant revascularization in stable coronary artery disease. Int J Cardiol 2023; 389:131176. [PMID: 37442350 DOI: 10.1016/j.ijcard.2023.131176] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/28/2023] [Accepted: 07/10/2023] [Indexed: 07/15/2023]
Abstract
OBJECTIVES Confirming the prognostic value of global QFR and evaluating the long-term prognosis of QFR-concordant therapy in stable coronary artery disease. BACKGROUND Wire-based functional evaluation of coronary disease is linked to patient's prognosis. Quantitative Flow Ratio (QFR) is a newer index of computational physiology, linked to clinical outcomes and prognosis at 1 year follow-up. Long-term prognosis of QFR-concordant revascularization in stable coronary artery disease is however unknown hitherto. METHODS Consecutive patients with stable coronary disease undergoing coronary angiography were included. Centralized and blinded QFR analysis of three coronary territories was performed. Three vessel QFR (3vQFR) was defined as the sum of the basal QFR of each coronary territory. QFR-concordant revascularization was met if all significant lesions (QFR ≤ 0.80) were revascularized and all non-significant lesions (QFR > 0.80) were not; otherwise, the case was defined as QFR-discordant revascularization. Patient-oriented composite end-point (POCE) of cardiac death, myocardial infarction and unscheduled revascularization was the primary endpoint. RESULTS A total of 803 patients from six high-volume centers were included. Canadian Cardiovascular Society (CCS) class II angina was the most frequent (48.9%) clinical presentation. Median of follow-up was 68.8 months. 3vQFR was an independent predictor of POCE (HR 1.79 CI95% 1.01-3.18), with 2.75 as optimal cut-off value, irrespective of the therapy received. QFR-discordant revascularization (QFR+/Revascularization- or QFR-/Revascularization+) was an independent predictor of POCE in multivariate analysis (HR 1.65, CI 95% 1.03-2.64). CONCLUSION Global burden of epicardial coronary atherosclerosis, as evaluated by 3vQFR, as well as QFR-discordant therapy are independent predictors of adverse clinical outcome at long-term follow-up in stable coronary artery disease.
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Affiliation(s)
- Carlos Cortés
- Hospital Clínico Universitario de Valladolid, Valladolid, CIBERCV, Spain; Hospital Universitario Miguel Servet, Zaragoza, Spain.
| | | | - Lili Liu
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | | | - Fernando Rivero
- Department of Cardiology, Hospital Universitario de La Princesa, IIS-IP. Madrid, Spain
| | | | - Alfonso Freites
- Hospital General Universitario de Ciudad Real, Ciudad Real, Spain
| | | | | | | | - Ainhoa Pérez
- Hospital Clínico Universitario Lozano Blesa, Zaragoza, Spain
| | - David Del Val
- Department of Cardiology, Hospital Universitario de La Princesa, IIS-IP. Madrid, Spain
| | - Gunnar Leithod
- Hospital Universitario Virgen de la Arrixaca, Murcia, Spain
| | | | | | - José A Diarte
- Hospital Universitario Miguel Servet, Zaragoza, Spain
| | | | | | - Juan Luis Gutiérrez-Chico
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Bundeswehrzentralkrankenhaus, Koblenz, Germany
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Zampella E, Mannarino T, D'Antonio A, Assante R, Gaudieri V, Buongiorno P, Panico M, Cantoni V, Green R, Nappi C, Arumugam P, Petretta M, Cuocolo A, Acampa W. Prediction of outcome by 82Rb PET/CT in patients with ischemia and nonobstructive coronary arteries. J Nucl Cardiol 2023; 30:1110-1117. [PMID: 36352083 DOI: 10.1007/s12350-022-03144-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/11/2022] [Indexed: 11/11/2022]
Abstract
BACKGROUND The purpose of this study was to assess the prognostic value of cardiac 82Rb positron emission tomography (PET)/computed tomography (CT) imaging in patients with myocardial ischemia of nonobstructive coronary arteries (INOCA). METHODS We retrospectively evaluated 311 INOCA patients who underwent rest stress 82Rb PET/CT. Cardiac end points were cardiac death, myocardial infarction, or late coronary revascularization. A parametric survival model was also used to identify how the variables influenced time to event. RESULTS During a median follow-up of 37 months (range 6-108), 23 (7%) cardiac events occurred. In patients with events total perfusion defect (TPD) was higher and myocardial flow reserve (MFR) lower compared to those without events (both P < .001). At multivariable Cox analysis, increased TPD (i.e., ≥ 5%) and reduced MFR (i.e., < 2) were predictors of events (both P < .001). At Weibull survival analysis, the highest probability of cardiac events and risk acceleration were observed in patients with both increased TPD and reduced MFR. Annualized event rate was higher in patients with reduced MFR compared to those with preserved MFR (P < .001). CONCLUSION In patients with INOCA, the combined evaluation of myocardial perfusion and coronary vascular function by 82Rb PET/CT is able to identify those at higher risk of cardiac events.
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Affiliation(s)
- Emilia Zampella
- Department of Advanced Biomedical Sciences, University Federico II, Via Pansini 5, 80131, Naples, Italy
| | - Teresa Mannarino
- Department of Advanced Biomedical Sciences, University Federico II, Via Pansini 5, 80131, Naples, Italy
| | - Adriana D'Antonio
- Department of Advanced Biomedical Sciences, University Federico II, Via Pansini 5, 80131, Naples, Italy
| | - Roberta Assante
- Department of Advanced Biomedical Sciences, University Federico II, Via Pansini 5, 80131, Naples, Italy
| | - Valeria Gaudieri
- Department of Advanced Biomedical Sciences, University Federico II, Via Pansini 5, 80131, Naples, Italy
| | - Pietro Buongiorno
- Department of Advanced Biomedical Sciences, University Federico II, Via Pansini 5, 80131, Naples, Italy
| | | | - Valeria Cantoni
- Department of Advanced Biomedical Sciences, University Federico II, Via Pansini 5, 80131, Naples, Italy
| | - Roberta Green
- Department of Advanced Biomedical Sciences, University Federico II, Via Pansini 5, 80131, Naples, Italy
| | - Carmela Nappi
- Department of Advanced Biomedical Sciences, University Federico II, Via Pansini 5, 80131, Naples, Italy
| | - Parthiban Arumugam
- Department of Nuclear Medicine, Central Manchester Foundation Trust, Manchester, UK
| | | | - Alberto Cuocolo
- Department of Advanced Biomedical Sciences, University Federico II, Via Pansini 5, 80131, Naples, Italy
| | - Wanda Acampa
- Department of Advanced Biomedical Sciences, University Federico II, Via Pansini 5, 80131, Naples, Italy.
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Sharir T, Brodkin B. Can myocardial perfusion imaging predict outcome in patients with angina and ischemia but no obstructive coronary artery disease (INOCA)? J Nucl Cardiol 2021; 28:3038-3043. [PMID: 33000404 DOI: 10.1007/s12350-020-02338-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 08/11/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Tali Sharir
- Department of Nuclear Cardiology, Assuta Medical Center, 96 Igal Alon, C Building, 67891, Tel Aviv, Israel.
- Faculty of Health Sciences, Ben Gurion University of the Negev, Beersheba, Israel.
| | - Boris Brodkin
- Department of Nuclear Cardiology, Assuta Medical Center, 96 Igal Alon, C Building, 67891, Tel Aviv, Israel
- Department of Cardiology, Barzilai Medical Center, Ashkelon, Israel
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梁 鸿, 郭 谦, 张 新, 刘 雪, 唐 永, 陈 维, 侯 玉, 修 建. [Clinical outcomes of intravascular ultrasound in guiding the treatment of non-left main intermediate coronary lesions for patients with acute coronary syndrome]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2017; 37:707-711. [PMID: 28539300 PMCID: PMC6780465 DOI: 10.3969/j.issn.1673-4254.2017.05.25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE To evaluate the long-term clinical outcomes of intravascular ultrasound(IVUS) in guiding the treatment of non-left main intermediate coronary lesions for patients of acute coronary syndrome (ACS). METHODS A total of 25 patients with intermediate coronary lesions(stenosis of 40%-70%) confirmed by coronary angiography were performed with IVUS. When MLA≥4 mm2, we deferred the PCI treatment and performed optimal medical treatment (OMT). The patient were followed up for 12 month. The primary outcome was target vessel revascularization (TVR) and secondary outcome was major adverse cardiac events (MACEs). RESULTS A total of 25 lesions of 25 patients were examined by IVUS. 19(76%) lesions were attenuated plaque, 4(16%)were echo-lucent plaque, 2(8%) were calcified plaque. Most of the plaque (18/25, 72%) were eccentric. Positive remodeling was found in 20(80%) lesions and negative remodeling in 5(20%) lesions with meanremodeling index of 1.17=0.15. Thrombus was found in 1 case, accounting for 4%. The diameter stenosis, area stenosis, minimal lumen area and the reference diameter mea-sured by IVUS were larger than those measured by quantitative coronary angiography (all P<0.05). One patient with non-ST segment elevated myocardiac infarction was performed revascularization because MI attacked again, and 2 patients with Unstable angina were treated with OMT but they were still rehospitalization because of angina occurred repeatedly. The incidence of TVR was 4.00%, so as 16.00% of MACE. CONCLUSION IVUS can be used to guide the treatment of non-left main intermediate coronary lesions for patients of acute coronary syndrome.
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Affiliation(s)
- 鸿彬 梁
- 南方医科大学南方医院心血管内科,广东 广州 510515Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515
| | - 谦 郭
- 南方医科大学南方医院科研处,广东 广州 510515Department of Scientific Research, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - 新禄 张
- 解放军广州疗养院,广东 广州 510515Guangzhou Sanatorium of PLA, Guangzhou 510515, China
| | - 雪薇 刘
- 南方医科大学南方医院心血管内科,广东 广州 510515Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515
| | - 永祯 唐
- 南方医科大学南方医院心血管内科,广东 广州 510515Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515
| | - 维玉 陈
- 南方医科大学南方医院心血管内科,广东 广州 510515Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515
| | - 玉清 侯
- 南方医科大学南方医院心血管内科,广东 广州 510515Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515
| | - 建成 修
- 南方医科大学南方医院心血管内科,广东 广州 510515Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515
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Qamruddin S. False-Positive Stress Echocardiograms: A Continuing Challenge. Ochsner J 2016; 16:277-279. [PMID: 27660577 PMCID: PMC5024810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023] Open
Abstract
BACKGROUND Stress echocardiography is an integral test in the cardiac diagnostic laboratory and has high sensitivity and specificity. Despite the excellent specificity of stress echocardiography, we continue to see a subset of patients with false-positive tests (defined as <50% diameter stenosis on subsequent coronary angiography). These false-positive findings present a management challenge because it remains unclear if and how to treat these patients. METHODS This article reviews relevant clinical studies and their outcomes. RESULTS Studies suggest that a group of patients develops a hypertensive response to exercise and therefore may have false-positive stress echocardiography. Hence, superior blood pressure control prior to stress echocardiography may prevent some false-positive tests. In addition, a subset of patients has microvascular abnormalities, vasomotor changes, endothelial dysfunction, and/or small vessel coronary disease that can lead to false-positive stress echocardiography. CONCLUSION The evidence is insufficient to state that a false-positive stress echocardiography in the absence of obstructive coronary artery disease portends a poor outcome, but considerable evidence shows that some of these patients have microvascular abnormalities and endothelial dysfunction and consequently may benefit from aggressive medical management and further testing.
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Affiliation(s)
- Salima Qamruddin
- Department of Cardiology, Ochsner Clinic Foundation, New Orleans, LA
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D'Ascenzo F, Barbero U, Cerrato E, Lipinski MJ, Omedè P, Montefusco A, Taha S, Naganuma T, Reith S, Voros S, Latib A, Gonzalo N, Quadri G, Colombo A, Biondi-Zoccai G, Escaned J, Moretti C, Gaita F. Accuracy of intravascular ultrasound and optical coherence tomography in identifying functionally significant coronary stenosis according to vessel diameter: A meta-analysis of 2,581 patients and 2,807 lesions. Am Heart J 2015; 169:663-73. [PMID: 25965714 DOI: 10.1016/j.ahj.2015.01.013] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 01/17/2015] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Accuracy of intracoronary imaging to discriminate functionally significant coronary stenosis according to vessel diameter remains to be defined. METHODS PubMed, Scopus, and Google Scholar were systematically searched for studies assessing diagnostic accuracy (area under the receiver operating characteristic curve [AUC], the primary end point) and sensitivity and specificity (the secondary end points) of minimal luminal area (MLA) or of minimal luminal diameter (MLD) derived from intravascular ultrasound (IVUS) or optical coherence tomography (OCT) to detect functionally significant stenosis as determined with fractional flow reserve (FFR). RESULTS Fifteen studies were included, 2 with 110 patients analyzing only left main (LM), 5 with 224 patients and 306 lesions using OCT, and 9 with 1532 patients and 1681 lesions with IVUS. Median MLA for the OCT studies was 1.96 mm(2) (1.85-1.98 mm(2)), 2.9 mm(2) (2.7-3.1 mm(2)) for MLA of all lesions assessed with IVUS, 2.8 mm(2) (2.7-2.9 mm(2)) for lesions with an angiographic diameter >3 mm, 2.4 mm(2) (2.4-2.5 mm(2)) for lesions <3 mm, and 5.4 mm(2) (5.1-5.6 mm(2)) for LM lesions. For OCT-MLA, AUC was 0.80 (0.74-0.86), with a sensitivity of 0.81 (0.74-0.87) and specificity of 0.77 (0.71-0.83), whereas OCT-MLD had an AUC of 0.85 (0.79-0.91), sensitivity of 0.74 (0.69-0.78), and specificity of 0.70 (0.68-0.73). For IVUS-MLA, AUC was 0.78 (0.75-0.81) for all lesions, 0.78 (0.73-0.84) for vessels with a diameter >3 mm, and 0.79 (0.70-0.89) for those with a diameter <3 mm. Left main AUC was 0.97 (0.93-1). CONCLUSION Intravascular ultrasound and OCT had modest diagnostic accuracy for identification hemodynamically significant lesions, also with specific cutoff for different diameters. Invasive imaging for assessment of LM severity demonstrated excellent correlation with FFR. What is already known about this subject? Fractional flow reserve represents the criterion standard to evaluate the prognostic value of coronary stenosis, whereas its relationship with IVUS and OCT remains to be assessed. What does this study add? Despite improvement, IVUS and OCT do not predict functional stenosis, even with dedicated cutoff, apart from LM disease. How might this impact on clinical practice? The recent guidelines of myocardial revascularization have stressed the crucial role of FFR before performing percutaneous coronary intervention on LM, whereas intravascular imaging is often exploited to drive revascularization. The present analysis stresses the point that LM percutaneous coronary intervention may be driven only by intravascular imaging, given the high accuracy for significant ischemic lesions, whereas for other vessels, these 2 techniques mirror 2 different aspects.
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Uehara M, Funabashi N, Takaoka H, Fujimoto Y, Kuroda N, Kobayashi Y. Detection of luminal stenosis by 320-slice CT in coronary arteries with cross-sectional area less than 4mm2 confirmed by intravascular-ultrasound compared with conventional coronary angiography. Int J Cardiol 2013; 168:5457-60. [DOI: 10.1016/j.ijcard.2013.07.170] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 05/18/2013] [Accepted: 07/20/2013] [Indexed: 10/26/2022]
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Cho SG, Kim JH, Cho JY, Kim HS, Bom HS. Myocardial Blood Flow and Flow Reserve in Proximal and Mid-to-Distal Lesions of Left Anterior Descending Artery Measured By N-13 Ammonia PET/CT. Nucl Med Mol Imaging 2013; 47:158-65. [PMID: 24900102 DOI: 10.1007/s13139-013-0208-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 04/24/2013] [Accepted: 04/29/2013] [Indexed: 11/27/2022] Open
Abstract
PURPOSE The purpose of this study is to compare the myocardial blood flow (MBF) and flow reserve (MFR) between proximal and mid-to-distal lesions of the left anterior descending artery (pLAD and mdLAD, respectively) using N-13 ammonia positron emission tomography/computed tomography (PET/CT). METHODS Subjects were 11 patients (six men and five women, mean age 64.5 years) with known coronary artery disease (CAD) involving LAD studied by N-13 ammonia PET/CT. They were divided into two groups by the location of stenotic lesions, i.e. pLAD versus mdLAD. Global and regional MBF and MFR were measured and compared. Characteristics of perfusion defects including the number of involved segments, basal area involvement, location, size, and shape were also compared between the two groups. RESULTS The regional MFR in mid-anterior segment was significantly lower in pLAD group (1.80 ± 0.35 vs 2.76 ± 1.13 for pLAD and mdLAD groups, respectively, p = 0.034), while global MFR was not different (2.10 ± 1.10 vs 2.34 ± 0.84). Both stress and rest MBF in LAD territories were not different in both groups. The size of the perfusion defects were significantly larger in pLAD group (44.0 ± 11.5 % vs 21.1 ± 15.8 %, p = 0.041). Other characteristics such as location, basal area involvement, and shape were not significantly different between two groups. CONCLUSIONS The proximal lesion makes lower MFR in the mid-anterior segment and larger perfusion defect in the LAD territory but comparable MBF compared with mdLAD lesion.
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Affiliation(s)
- Sang-Geon Cho
- Department of Nuclear Medicine, Chonnam National University Hospital, Gwangju, South Korea
| | - Ju Han Kim
- Department of Cardiology, Chonnam National University Hospital, Gwangju, South Korea
| | - Jae Young Cho
- Department of Cardiology, Chonnam National University Hospital, Gwangju, South Korea
| | - Hyeon Sik Kim
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam Korea 519-763
| | - Hee-Seung Bom
- Department of Nuclear Medicine, Chonnam National University Hwasun Hospital, 322 Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam Korea 519-763
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Kakouros N, Rybicki FJ, Mitsouras D, Miller JM. Coronary pressure-derived fractional flow reserve in the assessment of coronary artery stenoses. Eur Radiol 2012. [PMID: 23179519 DOI: 10.1007/s00330-012-2670-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVES Catheter-based angiography is the reference-standard to establish coronary anatomy. While routinely employed clinically, lumen assessment correlates poorly with physiological measures of ischaemia. Moreover, functional studies to identify and localise ischaemia before elective angiography are often not available. This article reviews fractional flow reserve (FFR) and its role in guiding patient management for patients with a potentially haemodynamic significant coronary lesion. METHODS This review discusses the theory, evidence, indications, and limitations of FFR. Also included are emerging non-invasive imaging FFR surrogates currently under evaluation for accuracy with respect to standard FFR. RESULTS Coronary pressure-derived fractional flow reserve (FFR) rapidly assesses the haemodynamic significance of individual coronary artery lesions and can readily be performed in the catheterisation laboratory. The use of FFR has been shown to effectively guide coronary revascularization procedures leading to improved patient outcomes. CONCLUSIONS FFR is an invaluable modality in guiding coronary disease treatment decisions. It is safe, cost-effective and leads to improved patient outcomes. Non-invasive imaging modalities to assess the physiologic significance of CAD are currently being developed and evaluated.
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Affiliation(s)
- Nikolaos Kakouros
- Division of Cardiology, Johns Hopkins Hospital and Johns Hopkins University, 600 N. Wolfe Street, Blalock 536, Baltimore, MD 21287, USA
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Bourantas CV, Naka KK, Garg S, Thackray S, Papadopoulos D, Alamgir FM, Hoye A, Michalis LK. Clinical indications for intravascular ultrasound imaging. Echocardiography 2011; 27:1282-90. [PMID: 21092059 DOI: 10.1111/j.1540-8175.2010.01259.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Intravascular ultrasound (IVUS) is a catheter-based imaging modality, which provides high resolution cross-sectional images of the coronary arteries. Unlike angiography, which displays only the opacified luminal silhouette, IVUS permits imaging of both the lumen and vessel wall and allows characterization of the type of the plaque. Although IVUS provides accurate quantitative and qualitative information regarding the lumen and outer vessel wall, it is not routinely used during coronary angiography or in angioplasty procedures because the risk to benefit ratio (additional expense, procedural time, certain degree of risk, and complication versus improvement in the outcome) does not justify routine utilization. Nevertheless, there are situations where IVUS is extremely useful tool both for diagnosis and management so the aim of this review is to summarize the indications for IVUS imaging in the contemporary clinical practice.
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Affiliation(s)
- Christos V Bourantas
- Department of Cardiology, Castle Hill Hospital, East Yorkshire NHS Trust, Cottingham, Kingston upon Hull, UK.
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12
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Djaberi R, Roodt JO', Schuijf JD, Rabelink TJ, de Koning EJ, Pereira AM, Stokkel MP, Smit JW, Bax JJ, Jukema JW. Endothelial Dysfunction in Diabetic Patients with Abnormal Myocardial Perfusion in the Absence of Epicardial Obstructive Coronary Artery Disease. J Nucl Med 2009; 50:1980-6. [DOI: 10.2967/jnumed.109.065193] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Mesquita CT, Sousa ALS, Félix RM, Mattos ND, Azevedo JC, Duarte EP, Barbirato GB, Salgado CG, Dohmann HF. Dissociation between myocardial perfusion scintigraphy and angiographic findings explained by intravascular ultrasonography. Eur J Nucl Med Mol Imaging 2009; 36:1019-20. [PMID: 19296107 DOI: 10.1007/s00259-009-1106-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Accepted: 02/24/2009] [Indexed: 12/01/2022]
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Alqaisi F, AlBadarin F, Jaffery Z, Tzogias L, Dawod M, Jacobsen G, Ananthasubramaniam K. Prognostic predictors and outcomes in patients with abnormal myocardial perfusion imaging and angiographically insignificant coronary artery disease. J Nucl Cardiol 2008; 15:754-61. [DOI: 10.1007/bf03007356] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2007] [Accepted: 05/26/2008] [Indexed: 11/30/2022]
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Schuijf JD, van Werkhoven JM, Pundziute G, Jukema JW, Decramer I, Stokkel MP, Dibbets-Schneider P, Schalij MJ, Reiber JH, van der Wall EE, Wijns W, Bax JJ. Invasive Versus Noninvasive Evaluation of Coronary Artery Disease. JACC Cardiovasc Imaging 2008; 1:190-9. [DOI: 10.1016/j.jcmg.2007.12.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2007] [Accepted: 12/16/2007] [Indexed: 11/25/2022]
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A patient with a borderline coronary angiographic finding on the proximal LAD. Practical application of intravascular ultrasound to specify the relevance of stenosis and to identify the optimal therapeutic procedure. COR ET VASA 2007. [DOI: 10.33678/cor.2007.147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Weinsaft JW, Gade CL, Wong FJ, Kim HW, Min JK, Manoushagian SJ, Okin PM, Szulc M. Diagnostic impact of SPECT image display on assessment of obstructive coronary artery disease. J Nucl Cardiol 2007; 14:659-68. [PMID: 17826319 DOI: 10.1016/j.nuclcard.2007.06.115] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2007] [Accepted: 06/05/2007] [Indexed: 11/20/2022]
Abstract
BACKGROUND Diagnostic assessment of myocardial perfusion impacts the management of patients with suspected coronary artery disease (CAD). Although various image displays are available for single photon emission computed tomography (SPECT) interpretation, the effects of display differences on SPECT interpretation remain undetermined. METHODS AND RESULTS We studied 183 patients undergoing SPECT, including 131 consecutive patients referred for angiography and 52 at low CAD risk. Studies were visually interpreted by use of color and gray images, with readers blinded to the results of the other display. In accordance with established criteria, a summed stress score (SSS) of 4 or greater was considered abnormal. The prevalence of abnormal SPECT findings was higher with gray images than with color images (54% vs 48%, P < .001) based on a uniform criterion (SSS > or =4). However, color images yielded equivalent sensitivity (79% vs 82%, P = .7) and improved specificity for global (50% vs 33%, P = .02) and vessel-specific CAD involving the right coronary artery (P < .01) and left anterior descending artery (P < .05). When the criterion for gray images was adjusted upward (SSS > or =5) to reflect increased mean defect severity (SSS of 5.1 vs 4.4, P = .01), gray and color images provided equivalent sensitivity and specificity for global and vessel-specific CAD. CONCLUSIONS SPECT interpretation can vary according to image display as a result of differences in perfusion defect severity. Adjustment of abnormality criteria for gray images to reflect minor increases in defect severity provides equivalent diagnostic performance of gray and color displays for CAD assessment.
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Affiliation(s)
- Jonathan W Weinsaft
- Division of Cardiology, Department of Medicine, Weill Medical College of Cornell University, New York, NY 10021, USA.
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Ho PC. Spontaneous slow flow in the saphenous vein graft: a relevant distinction of macrovascular endothelial dysfunction. Heart Vessels 2007; 22:274-7. [PMID: 17653523 DOI: 10.1007/s00380-007-0981-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2006] [Accepted: 03/09/2007] [Indexed: 10/23/2022]
Abstract
Spontaneous slow flow without significant obstructive stenosis, as encountered during diagnostic angiography, has mostly been reported in native coronary arteries. This phenomenon has been associated with angina, myocardial ischemia and infarction. Slow flow and "no-reflow" in saphenous vein grafts (SVG) have mostly been observed during percutaneous interventions as a complication from distal embolization. Spontaneous slow SVG flow, however, is rarely reported and correlation with clinical events not as well documented. A case of spontaneous slow flow in a SVG without significant obstructive lesions is presented, which correlated with the patient's anginal symptoms and ischemia on the stress myocardial perfusion scintigraphy. Percutaneous coronary intervention in the bypassed native coronary artery was successful resulting in the restoration of TIMI-3 coronary flow, resolution of the patient's symptoms, and normalization of the myocardial perfusion defects. The restoration of normal flow through the stented native coronary artery suggested endothelial dysfunction of the initial slow flow state was localized at the macrovascular level, specifically at the SVG conduit. Since bypass graft failure, as with native arterial atherosclerosis, has been attributed to impaired endothelial function at both the macrovascular and microvascular levels, localization of macrovascular endothelial dysfunction in the SVG as shown may be an instructive observation.
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Affiliation(s)
- Paul C Ho
- Division of Cardiology, Hawaii Region Kaiser Permanente, Kaiser Foundation Hospital, 3288 Moanalua Road, Honolulu, HI 96819, USA.
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