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Madsen S, Dias AH, Lauritsen KM, Bouchelouche K, Tolbod LP, Gormsen LC. Myocardial Viability Testing by Positron Emission Tomography: Basic Concepts, Mini-Review of the Literature and Experience From a Tertiary PET Center. Semin Nucl Med 2020; 50:248-259. [PMID: 32284111 DOI: 10.1053/j.semnuclmed.2020.02.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Ischemic heart disease ranges in severity from slightly reduced myocardial perfusion with preserved contractile function to chronic occlusion of coronary arteries with myocardial cells replaced by acontractile scar tissue-ischemic heart failure (iHF). Progression towards scar tissue is thought to involve a period in which the myocardial cells are acontractile but still viable despite severely reduced perfusion. This state of reduced myocardial function that can be reversed by revascularization is termed "hibernation." The concept of hibernating myocardium in iHF has prompted an increasing amount of requests for preoperative patient workup, but while the concept of viability is widely agreed upon, no consensus on clinical testing of hibernation has been established. Therefore, a variety of imaging methods have been used to assess hibernation including morphology based (MRI and ultrasound), perfusion based (MRI, SPECT, or PET) and/or methods to assess myocardial metabolism (PET). Regrettably, the heterogeneous body of literature on the subject has resulted in few robust prospective clinical trials designed to assess the impact of preoperative viability testing prior to revascularization. However, the PARR-2 trial and sub-studies has indicated that >5% hibernating myocardium favors revascularization over optimized medical therapy. In this paper, we review the basic concepts and current evidence for using PET to assess myocardial hibernation and discuss the various methodologies used to process the perfusion/metabolism PET images. Finally, we present our experience in conducting PET viability testing in a tertiary referral center.
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Affiliation(s)
- Simon Madsen
- Department of Nuclear Medicine & PET Centre, Aarhus University Hospital, Aarhus, Denmark
| | - André H Dias
- Department of Nuclear Medicine & PET Centre, Aarhus University Hospital, Aarhus, Denmark
| | | | - Kirsten Bouchelouche
- Department of Nuclear Medicine & PET Centre, Aarhus University Hospital, Aarhus, Denmark
| | - Lars Poulsen Tolbod
- Department of Nuclear Medicine & PET Centre, Aarhus University Hospital, Aarhus, Denmark
| | - Lars C Gormsen
- Department of Nuclear Medicine & PET Centre, Aarhus University Hospital, Aarhus, Denmark.
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Kandolin RM, Wiefels CC, Mesquita CT, Chong A, Boland P, Glineur D, Sun L, Beanlands RS, Mielniczuk LM. The Current Role of Viability Imaging to Guide Revascularization and Therapy Decisions in Patients With Heart Failure and Reduced Left Ventricular Function. Can J Cardiol 2019; 35:1015-29. [DOI: 10.1016/j.cjca.2019.04.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 04/25/2019] [Accepted: 04/28/2019] [Indexed: 12/20/2022] Open
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Zelt JGE, Liu PP, Erthal F, deKemp RA, Wells G, O'Meara E, Garrard L, Beanlands RSB, Mielniczuk LM. N-Terminal Pro B-Type Natriuretic Peptide and High-Sensitivity Cardiac Troponin T Levels Are Related to the Extent of Hibernating Myocardium in Patients With Ischemic Heart Failure. Can J Cardiol 2017; 33:1478-1488. [PMID: 28966019 DOI: 10.1016/j.cjca.2017.06.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 06/07/2017] [Accepted: 06/20/2017] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Increased N-terminal pro b-type natriuretic peptide (NT-proBNP) and high-sensitivity cardiac troponin T (hs-cTnT) can identify patients with heart failure (HF) who are at increased risk of cardiac events. The relationship of these biomarkers to the extent of hibernating myocardium and scar has not been previously characterized in patients with ischemic left ventricular dysfunction and HF. METHODS Patients with ischemic HF meeting recruitment criteria and undergoing perfusion and fluorodeoxyglucose-positron emission tomography to define myocardial hibernation and scar were included in the study. A total of 39 patients (mean age 67 ± 8 years) with New York Heart Association class II-IV HF and ischemic cardiomyopathy (ejection fraction [EF], 27.9% ± 8.5%) were enrolled in the study. RESULTS Serum NT-proBNP and hs-cTnT levels were elevated in patients with ≥ 10% hibernating myocardium compared with those with < 10% (NT-pro-BNP, 7419.10 ± 7169.5 pg/mL vs 2894.6 ± 2967.4 pg/mL; hs-cTnT, 789.3 ± 1835.3 pg/mL vs 44.8 ± 78.9 pg/mL; P < 0.05). The overall receiver operating characteristic under the curve value for NT-proBNP and hs-cTnT to predict hibernating myocardium was 0.76 and 0.78, respectively (P < 0.05). The NT-proBNP (P = 0.02) and hs-cTnT (P < 0.0001) levels also correlated with hibernation, particularly in patients with ≥ 10% scar, independent of EF, age, and estimated glomerular filtration rate. No differences were noted in biomarker levels for patients with vs those without ≥ 10% scar. CONCLUSIONS NT-proBNP and hs-cTnT levels are elevated in patients with ischemic HF hibernation and are correlated with the degree of hibernation but not with the presence or extent of scar. Taken together, these data support the novel concept that NT-proBNP and hs-cTnT release in patients with ischemic HF reflects the presence and extent of hibernating myocardium.
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Affiliation(s)
- Jason G E Zelt
- Molecular Function and Imaging Program, The National Cardiac PET Centre, and the Advanced Heart Disease Program, Division of Cardiology, Department of Medicine, and the Cardiac Research Methods Centre, University of Ottawa Heart Institute and University of Ottawa, Ottawa, Ontario, Canada; Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Peter P Liu
- Molecular Function and Imaging Program, The National Cardiac PET Centre, and the Advanced Heart Disease Program, Division of Cardiology, Department of Medicine, and the Cardiac Research Methods Centre, University of Ottawa Heart Institute and University of Ottawa, Ottawa, Ontario, Canada; Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada; Departments of Medicine and Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Fernanda Erthal
- Molecular Function and Imaging Program, The National Cardiac PET Centre, and the Advanced Heart Disease Program, Division of Cardiology, Department of Medicine, and the Cardiac Research Methods Centre, University of Ottawa Heart Institute and University of Ottawa, Ottawa, Ontario, Canada
| | - Robert A deKemp
- Molecular Function and Imaging Program, The National Cardiac PET Centre, and the Advanced Heart Disease Program, Division of Cardiology, Department of Medicine, and the Cardiac Research Methods Centre, University of Ottawa Heart Institute and University of Ottawa, Ottawa, Ontario, Canada
| | - George Wells
- Molecular Function and Imaging Program, The National Cardiac PET Centre, and the Advanced Heart Disease Program, Division of Cardiology, Department of Medicine, and the Cardiac Research Methods Centre, University of Ottawa Heart Institute and University of Ottawa, Ottawa, Ontario, Canada
| | - Eileen O'Meara
- Division of Cardiology, Montréal Heart Institute, Montréal, Québec, Canada
| | - Linda Garrard
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Rob S B Beanlands
- Molecular Function and Imaging Program, The National Cardiac PET Centre, and the Advanced Heart Disease Program, Division of Cardiology, Department of Medicine, and the Cardiac Research Methods Centre, University of Ottawa Heart Institute and University of Ottawa, Ottawa, Ontario, Canada; Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Lisa M Mielniczuk
- Molecular Function and Imaging Program, The National Cardiac PET Centre, and the Advanced Heart Disease Program, Division of Cardiology, Department of Medicine, and the Cardiac Research Methods Centre, University of Ottawa Heart Institute and University of Ottawa, Ottawa, Ontario, Canada; Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.
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Daniels LB, Lee NS, Hsu JC. Natriuretic Peptides for Predicting Left Atrial Reverse Remodeling After Atrial Fibrillation Ablation: Too Much of a Stretch? JACC Clin Electrophysiol 2016; 2:159-161. [PMID: 29766865 DOI: 10.1016/j.jacep.2016.02.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 02/19/2016] [Indexed: 11/28/2022]
Affiliation(s)
- Lori B Daniels
- UC San Diego Health, University of California-San Diego, La Jolla, California, USA.
| | - Noel S Lee
- UC San Diego Health, University of California-San Diego, La Jolla, California, USA
| | - Jonathan C Hsu
- UC San Diego Health, University of California-San Diego, La Jolla, California, USA
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Palazzuoli A, Beltrami M, Pellegrini M, Nuti R. Natriuretic peptides and NGAL in heart failure: does a link exist? Clin Chim Acta 2012; 413:1832-8. [PMID: 22820397 DOI: 10.1016/j.cca.2012.07.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Revised: 07/10/2012] [Accepted: 07/10/2012] [Indexed: 11/30/2022]
Abstract
In recent years there has been growing interest in the development of new diagnostic tools and particularly in laboratory tests for the identification of heart failure (HF) patients. Because of the rise in HF occurrence, it is necessary to use simple and reliable method to recognize those patients at risk before the onset of the clinical symptoms. To date HF diagnosis remains difficult: its symptoms and signs are often non specific as well as being poor sensitive indicators for HF severity. Throughout the last 10 years published literature has highlighted a boom in the use of biomarkers for HF. Both B-type and N-terminal pro-B-type natriuretic peptides have demonstrated specific role in heart failure diagnosis, as well as risk assessment. A single determination of BNP at any time during the development of chronic heart failure (CHF) provides a clinically useful tool to establish the outcome. Renal dysfunction is often associated with heart failure and predicts adverse clinical outcomes. Many studies have recently suggested the clinical use of serum neutrophil gelatinase-associated lipocalin (NGAL) levels in patients admitted to the hospital for acute HF can be used to estimate the risk of early worsening renal function. This could be potentially applied in clinical practice for early identification of renal dysfunction development in patients with HF. NGAL levels appear also to predict renal dysfunction in patients with chronic HF and preserved renal function. For all these reasons, BNP and NGAL are two emerging tools useful for diagnosis and prognosis in HF. The combination of two laboratory biomarkers could potentially identify patients with more elevated risks of both cardiac hemodynamic impairment and kidney dysfunction.
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Affiliation(s)
- Alberto Palazzuoli
- Department of Internal Medicine, UOS Cardiology, S. Maria alle Scotte Hospital Siena, University of Siena, Italy.
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Henkel DM, Glockner J, Miller WL. Association of myocardial fibrosis, B-type natriuretic peptide, and cardiac magnetic resonance parameters of remodeling in chronic ischemic cardiomyopathy. Am J Cardiol 2012; 109:390-4. [PMID: 22078219 DOI: 10.1016/j.amjcard.2011.09.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Revised: 09/29/2011] [Accepted: 09/29/2011] [Indexed: 01/19/2023]
Abstract
The left ventricular (LV) scar size detected by cardiac magnetic resonance (CMR) imaging in ischemic cardiomyopathy (IC) has been correlated with mortality. However, the associations among myocardial fibrosis, ventricular geometry, and physiologic measures of myocardial performance remain to be defined. A retrospective analysis of patients with stable chronic IC (LV ejection fraction ≤50%) who underwent CMR imaging from 2004 to 2010 and had plasma B-type natriuretic peptide (BNP) measured within 14 days of the CMR study was undertaken. A total of 38 patients met the criteria (mean age 66 ± 10 years; 31 men [82%]). The duration of IC was 67 ± 69 months. The CMR characteristics included LV dilation (LV end-diastolic dimension 62 ± 8 mm) and severe systolic dysfunction (LV ejection fraction 28 ± 11%). The average quantitated myocardial fibrosis was 20 ± 12% of the LV mass. When stratified by fibrotic mass, increased myocardial scar size was associated with increased LV cavity size (p = 0.007), lower LV ejection fraction (p = 0.04), and higher BNP (p = 0.013). In comparison, when stratified by median BNP (475 pg/ml), an elevated BNP level was associated, not only with LV size, function, and degree of fibrosis, but also with increased meridional wall stress (p = 0.002) and worse New York Heart Association functional class (p = 0.006). In conclusion, in chronic IC, quantitated myocardial fibrosis is associated with CMR structural and functional LV abnormalities. Elevated BNP levels are related to high-risk structural and functional CMR abnormalities and wall stress and functional status. Myocardial fibrosis appears to be related to plasma BNP through the processes of ventricular remodeling.
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Affiliation(s)
- Danielle M Henkel
- Division of Cardiovascular Disease, Mayo Clinic, Rochester, Minnesota, USA
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Miller WL, Burnett JC, Hartman KA, Hodge DO, Giuliani I, Minard F, Larue C, Jaffe AS. Role for precursor Pro-B type natriuretic peptide in assessing response to therapy and prognosis in patients with decompensated heart failure treated with nesiritide. Clin Chim Acta 2009; 406:119-23. [PMID: 19523938 DOI: 10.1016/j.cca.2009.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2009] [Revised: 06/02/2009] [Accepted: 06/03/2009] [Indexed: 01/01/2023]
Abstract
BACKGROUND ProBNP, the precursor peptide to BNP and NT-proBNP (NP), circulates in patients with chronic heart failure (HF) and appears to be the predominant form of NP. This heterogeneity may confound interpretation of NP concentrations. The aim of this study was to evaluate the response to therapy and prognostic influence of proBNP in a cohort of patients admitted to hospital for decompensated HF. METHODS We prospectively evaluated 40 Class III-IV patients who received clinically-indicated nesiritide infusions as part of their care. Blood was drawn before, during, and post-infusion, and assayed for proBNP, BNP, and NT-proBNP. RESULTS All biomarkers were increased at baseline consistent with HF. ProBNP and NT-proBNP demonstrated significant reductions in response to therapy (42% and 18% post-infusion, respectively). In the patients who experienced post-hospital mortality (40% at 6 months), baseline proBNP and BNP concentrations were significantly lower than in survivors. This paradoxical finding may be explained by the end-stage nature of this patient cohort possibly experiencing exhaustion of their NP systems. CONCLUSIONS Circulating concentrations of proBNP are increased in decompensated HF and similar to NT-proBNP are reduced in response to acute therapy. Paradoxically and similar to BNP, baseline proBNP concentrations were lower in post-hospital non-survivors. While hypothesis generating, the results of this study support a role for proBNP in monitoring therapy and predicting short-term outcome. These findings need to be confirmed in a patient cohort without nesiritide therapy and more moderate HF.
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Affiliation(s)
- Wayne L Miller
- Division of Cardiovascular Diseases, Department of Medicine, Mayo Clinic, Rochester, MN 55905, United States.
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