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Werner RA, Rowe SP, Higuchi T. No major impact of prescribed CAD drugs on myocardial perfusion uptake derived by [ 82]rubidium PET. J Nucl Cardiol 2022; 29:2863-2865. [PMID: 34611851 PMCID: PMC9834351 DOI: 10.1007/s12350-021-02786-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 08/11/2021] [Indexed: 01/22/2023]
Affiliation(s)
- Rudolf A Werner
- Department of Nuclear Medicine, University Hospital Würzburg, Oberdürrbacherstr. 6, 97080, Würzburg, Germany.
| | - Steven P Rowe
- The Russell H Morgan Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, USA
| | - Takahiro Higuchi
- Department of Nuclear Medicine, University Hospital Würzburg, Oberdürrbacherstr. 6, 97080, Würzburg, Germany
- Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Kristensen AMD, Pareek M, Kragholm KH, Sehested TSG, Olsen MH, Prescott EB. Unstable Angina as a Component of Primary Composite Endpoints in Clinical Cardiovascular Trials: Pros and Cons. Cardiology 2022; 147:235-247. [PMID: 35537418 PMCID: PMC9393841 DOI: 10.1159/000524948] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 04/29/2022] [Indexed: 11/19/2022]
Abstract
Background Unstable angina (UA) is a component of acute coronary syndrome that is only occasionally included in primary composite endpoints in clinical cardiovascular trials. The aim of this paper is to elucidate the potential benefits and disadvantages of including UA in such contexts. Summary UA comprises <10% of patients with acute coronary syndromes in contemporary settings. Based on the pathophysiological similarities, it is ideal as a part of a composite endpoint along with myocardial infarction (MI). By adding UA as a component of a primary composite endpoint, the number of events and feasibility of the trial should increase, thus decreasing size and costs of trials. Furthermore, UA has both economic and quality of life implications on a societal and an individual level. However, there are important challenges associated with the use of UA as an endpoint. With the introduction of high-sensitivity troponins, the number of individuals diagnosed with UA has decreased to rather low levels, with a reciprocal increase in the number of MI. In addition, UA is particularly challenging to define given the subjective assessment of the index symptoms, rendering a high risk of bias. To minimize bias, strict criteria are warranted, and events should be adjudicated by a blinded endpoint adjudication committee. Key messages UA should only be chosen as a component of a primary composite endpoint in cardiovascular trials after thoroughly evaluating the pros and cons. If it is chosen to include UA, appropriate precautions should be taken to minimize possible bias.
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Affiliation(s)
- Anna Meta Dyrvig Kristensen
- Department of Cardiology, Copenhagen University Hospital − Bispebjerg and Frederiksberg, Copenhagen, Denmark
- *Anna Meta Dyrvig Kristensen,
| | - Manan Pareek
- Department of Cardiology, Copenhagen University Hospital − Herlev and Gentofte, Copenhagen, Denmark
| | | | - Thomas Steen Gyldenstierne Sehested
- Department of Cardiology, Copenhagen University Hospital − Bispebjerg and Frederiksberg, Copenhagen, Denmark
- Department of Cardiology, Zealand University Hospital Roskilde, Roskilde, Denmark
| | - Michael Hecht Olsen
- Division of Cardiology, Department of Internal Medicine, Holbæk Hospital, Holbæk, Denmark
- Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Eva Bossano Prescott
- Department of Cardiology, Copenhagen University Hospital − Bispebjerg and Frederiksberg, Copenhagen, Denmark
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Lossnitzer D, Klenantz S, Andre F, Goerich J, Schoepf UJ, Pazzo KL, Sommer A, Brado M, Gückel F, Sokiranski R, Becher T, Akin I, Buss SJ, Baumann S. Stable patients with suspected myocardial ischemia: comparison of machine-learning computed tomography-based fractional flow reserve and stress perfusion cardiovascular magnetic resonance imaging to detect myocardial ischemia. BMC Cardiovasc Disord 2022; 22:34. [PMID: 35120459 PMCID: PMC8817462 DOI: 10.1186/s12872-022-02467-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 01/22/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Machine-Learning Computed Tomography-Based Fractional Flow Reserve (CT-FFRML) is a novel tool for the assessment of hemodynamic relevance of coronary artery stenoses. We examined the diagnostic performance of CT-FFRML compared to stress perfusion cardiovascular magnetic resonance (CMR) and tested if there is an additional value of CT-FFRML over coronary computed tomography angiography (cCTA). METHODS Our retrospective analysis included 269 vessels in 141 patients (mean age 67 ± 9 years, 78% males) who underwent clinically indicated cCTA and subsequent stress perfusion CMR within a period of 2 months. CT-FFRML values were calculated from standard cCTA. RESULTS CT-FFRML revealed no hemodynamic significance in 79% of the patients having ≥ 50% stenosis in cCTA. Chi2 values for the statistical relationship between CT-FFRML and stress perfusion CMR was significant (p < 0.0001). CT-FFRML and cCTA (≥ 70% stenosis) provided a per patient sensitivity of 88% (95%CI 64-99%) and 59% (95%CI 33-82%); specificity of 90% (95%CI 84-95%) and 85% (95%CI 78-91%); positive predictive value of 56% (95%CI 42-69%) and 36% (95%CI 24-50%); negative predictive value of 98% (95%CI 94-100%) and 94% (95%CI 90-96%); accuracy of 90% (95%CI 84-94%) and 82% (95%CI 75-88%) when compared to stress perfusion CMR. The accuracy of cCTA (≥ 50% stenosis) was 19% (95%CI 13-27%). The AUCs were 0.89 for CT-FFRML and 0.74 for cCTA (≥ 70% stenosis) and therefore significantly different (p < 0.05). CONCLUSION CT-FFRML compared to stress perfusion CMR as the reference standard shows high diagnostic power in the identification of patients with hemodynamically significant coronary artery stenosis. This could support the role of cCTA as gatekeeper for further downstream testing and may reduce the number of patients undergoing unnecessary invasive workup.
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Affiliation(s)
- Dirk Lossnitzer
- Department of Cardiology, Angiology and Pneumology, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany.
| | - Selina Klenantz
- First Department of Medicine-Cardiology, University Medical Centre Mannheim, Mannheim, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Mannheim, Germany
| | - Florian Andre
- Department of Cardiology, Angiology and Pneumology, University of Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany
| | - Johannes Goerich
- The Radiology Center, Sinsheim-Eberbach-Erbach-Walldorf-Heidelberg, Heidelberg, Germany
| | - U Joseph Schoepf
- Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC, USA
| | - Kyle L Pazzo
- Division of Cardiovascular Imaging, Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC, USA
| | - Andre Sommer
- The Radiology Center, Sinsheim-Eberbach-Erbach-Walldorf-Heidelberg, Heidelberg, Germany
| | - Matthias Brado
- The Radiology Center, Sinsheim-Eberbach-Erbach-Walldorf-Heidelberg, Heidelberg, Germany
| | - Friedemann Gückel
- The Radiology Center, Sinsheim-Eberbach-Erbach-Walldorf-Heidelberg, Heidelberg, Germany
| | - Roman Sokiranski
- The Radiology Center, Sinsheim-Eberbach-Erbach-Walldorf-Heidelberg, Heidelberg, Germany
| | - Tobias Becher
- First Department of Medicine-Cardiology, University Medical Centre Mannheim, Mannheim, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Mannheim, Germany
| | - Ibrahim Akin
- First Department of Medicine-Cardiology, University Medical Centre Mannheim, Mannheim, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Mannheim, Germany
| | - Sebastian J Buss
- The Radiology Center, Sinsheim-Eberbach-Erbach-Walldorf-Heidelberg, Heidelberg, Germany
| | - Stefan Baumann
- First Department of Medicine-Cardiology, University Medical Centre Mannheim, Mannheim, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Heidelberg/Mannheim, Mannheim, Germany
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Lesion Geometry as Assessed by Optical Coherence Tomography Is Related to Myocardial Ischemia as Determined by Cardiac Magnetic Resonance Imaging. J Clin Med 2021; 10:jcm10153342. [PMID: 34362126 PMCID: PMC8348708 DOI: 10.3390/jcm10153342] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 07/11/2021] [Accepted: 07/16/2021] [Indexed: 01/04/2023] Open
Abstract
INTRODUCTION Although the relationship between the geometry of coronary stenosis and the presence of myocardial ischemia is well known, the association between stenosis geometry and severity and/or extent of ischemia is still unexplored. Thus, we investigated this relationship using optical coherence tomography (OCT) to assess stenosis parameters and cardiac magnetic resonance imaging (CMR) to determine both extent and severity of ischemia. METHODS We analyzed 55 lesions from 51 patients with stable angina. Pre-interventionally, all patients underwent OCT-analysis of stenosis morphology as well as CMR to determine both the extent and severity of myocardial ischemia. RESULTS Percent area stenosis (%AS) was significantly associated with ischemic burden (r = 0.416, p = 0.003). Similar results could be obtained for other stenosis parameters as well as for several other parameters assessing the extent of ischemia. Furthermore, OCT-derived stenosis parameters were associated with the product of ischemic burden and severity of ischemia (%AS: r = 0.435, p = 0.002; similar results for other parameters). A Poiseuille's-law-modelled combination of stenosis length and minimal lumen diameter yielded a good diagnostic efficiency (AUC 0.787) in predicting an ischemic burden >10%. CONCLUSIONS Our data highlight the key role of the geometry of coronary lesions in determining myocardial ischemia.
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Alfakih K, Fyyaz S, Wragg A. ISCHEMIA trial: do the new stable chest pain guidelines need updating? THE BRITISH JOURNAL OF CARDIOLOGY 2021; 28:4. [PMID: 35747480 PMCID: PMC8822517 DOI: 10.5837/bjc.2021.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- Khaled Alfakih
- Consultant Cardiologist Lewisham and Greenwich NHS Trust, Lewisham University Hospital, Lewisham High Street, London, SE13 6LH
| | - Saad Fyyaz
- Specialist Registrar in Cardiology Guys and St. Thomas' NHS Trust, London, SE1 7EH
| | - Andrew Wragg
- Consultant Cardiologist Barts Health NHS Trust, London, EC1A 7BE
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