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Lam B, Velasquez M, Ogiyama T, Godines K, Szu FY, Velasquez-Mao AJ, AlGhuraibawi W, Wang J, Messersmith PB, Vandsburger MH. Imaging of adeno-associated viral capsids for purposes of gene editing using CEST NMR/MRI. Magn Reson Med 2024; 92:792-806. [PMID: 38651648 PMCID: PMC11142879 DOI: 10.1002/mrm.30058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 01/19/2024] [Accepted: 02/03/2024] [Indexed: 04/25/2024]
Abstract
PURPOSE Gene therapy using adeno-associated virus (AAV) vector-mediated gene delivery has undergone substantial growth in recent years with promising results in both preclinical and clinical studies, as well as emerging regulatory approval. However, the inability to quantify the efficacy of gene therapy from cellular delivery of gene-editing technology to specific functional outcomes is an obstacle for efficient development of gene therapy treatments. Building on prior works that used the CEST reporter gene lysine rich protein, we hypothesized that AAV viral capsids may generate endogenous CEST contrast from an abundance of surface lysine residues. METHODS NMR experiments were performed on isolated solutions of AAV serotypes 1-9 on a Bruker 800-MHz vertical scanner. In vitro experiments were performed for testing of CEST-NMR contrast of AAV2 capsids under varying pH, density, biological transduction stage, and across multiple serotypes and mixed biological media. Reverse transcriptase-polymerase chain reaction was used to quantify virus concentration. Subsequent experiments at 7 T optimized CEST saturation schemes for AAV contrast detection and detected AAV2 particles encapsulated in a biocompatible hydrogel administered in the hind limb of mice. RESULTS CEST-NMR experiments revealed CEST contrast up to 52% for AAV2 viral capsids between 0.6 and 0.8 ppm. CEST contrast generated by AAV2 demonstrated high levels of CEST contrast across a variety of chemical environments, concentrations, and saturation schemes. AAV2 CEST contrast displayed significant positive correlations with capsid density (R2 > 0.99, p < 0.001), pH (R2 = 0.97, p = 0.01), and viral titer per cell count (R2 = 0.92, p < 0.001). Transition to a preclinical field strength yielded up to 11.8% CEST contrast following optimization of saturation parameters. In vivo detection revealed statistically significant molecular contrast between viral and empty hydrogels using both mean values (4.67 ± 0.75% AAV2 vs. 3.47 ± 0.87% empty hydrogel, p = 0.02) and quantile analysis. CONCLUSION AAV2 viral capsids exhibit strong capacity as an endogenous CEST contrast agent and can potentially be used for monitoring and evaluation of AAV vector-mediated gene therapy protocols.
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Affiliation(s)
- Bonnie Lam
- Department of Bioengineering, UC Berkeley, Berkeley, California, USA
| | - Mark Velasquez
- Department of Bioengineering, UC Berkeley, Berkeley, California, USA
| | - Tomoko Ogiyama
- Department of Bioengineering, UC Berkeley, Berkeley, California, USA
| | - Kevin Godines
- Department of Bioengineering, UC Berkeley, Berkeley, California, USA
| | - Fan-Yun Szu
- Department of Bioengineering, UC Berkeley, Berkeley, California, USA
| | - A J Velasquez-Mao
- Department of Bioengineering, UC Berkeley, Berkeley, California, USA
| | | | - Jingshen Wang
- Division of Biostatistics, UC Berkeley, Berkeley, California, USA
| | - Phillip B Messersmith
- Department of Bioengineering, UC Berkeley, Berkeley, California, USA
- Department of Materials Science and Engineering, UC Berkeley, Berkeley, California, USA
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California, USA
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Kim IC, Starling RC, Khush K, Passano E, Mirocha J, Bernhardt P, Azarbal B, Cheng R, Esmailian F, Mancini D, Patel JK, Sato T, Varnous S, Kobashigawa JA. Ten-year follow-up cohort of the everolimus versus azathioprine multinational prospective study focusing on intravascular ultrasound findings. J Heart Lung Transplant 2024:S1053-2498(24)01779-0. [PMID: 39089607 DOI: 10.1016/j.healun.2024.07.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 06/28/2024] [Accepted: 07/23/2024] [Indexed: 08/04/2024] Open
Abstract
BACKGROUND Long-term clinical outcomes of early intravascular ultrasound (IVUS) findings in a prospective cohort of heart transplantation (HTx) patients have not been evaluated. METHODS This study included patients from 20 centers across Europe and North and South America among the original cohort of the RAD B253 study. Among these patients, 91 had paired IVUS images at baseline and 1-year post-transplant: everolimus 1.5 mg group (n = 25), everolimus 1.5 mg group (n = 33), and azathioprine 3.0 group (n = 33). The primary outcome was a composite of cardiovascular death, retransplantation, myocardial infarction (MI), coronary revascularization, and cardiac allograft vasculopathy (CAV) within a 10-year follow-up period. The secondary outcome was all-cause death, cardiovascular death, retransplantation, MI, coronary revascularization, and CAV. Donor disease was defined as baseline maximal intimal thickness (MIT) >0.66 mm, and rapid progression was defined as a change in MIT > 0.59 mm at 1 year. RESULTS Donor disease (46 patients) was associated with a higher incidence of the primary outcome (hazard ratio (HR) 4.444, 95% confidence interval [CI] 1.946-10.146, p < 0.001). Rapid progression (44 patients) was associated with a significantly higher incidence of the primary outcome (HR 2.942, 95% CI 1.383-6.260, p = 0.005). Higher-risk features on IVUS (positive both donor disease and rapid progression) were independently associated with poor clinical outcomes (HR 4.800, 95% CI 1.816-12.684, p = 0.002). CONCLUSIONS An increase in baseline MIT and a change in first-year MIT in IVUS post HTx was associated with poor outcomes up to 10 years. Early IVUS findings can be considered as surrogate endpoints for evaluating long-term outcomes in HTx clinical trials.
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Affiliation(s)
- In-Cheol Kim
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California; Division of Cardiology, Department of Internal Medicine, Keimyung University Dongsan Hospital, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Randall C Starling
- Department of Cardiovascular Medicine, Heart and Vascular Institute, Kaufman Center for Heart Failure, Cleveland Clinic, Cleveland, Ohio
| | - Kiran Khush
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, California
| | - Elizabeth Passano
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - James Mirocha
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Peter Bernhardt
- Department of Research and Development, Novartis Pharma AG, Basel, Switzerland
| | - Babak Azarbal
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Richard Cheng
- Cardiology Division, University of Washington, Seattle, Washington
| | - Fardad Esmailian
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Donna Mancini
- Cardiology Department, Cardiovascular Institute, Mount Sinai Hospital, New York, New York
| | - Jignesh K Patel
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Takuma Sato
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California
| | - Shaida Varnous
- Department of Thoracic and Cardiovascular Surgery, Groupe Hospitalier Pitié-Salpêtrière, Assistance Publique des Hôpitaux de Paris, Sorbonne Université, Paris, France
| | - Jon A Kobashigawa
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, California.
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Ji X, Zhang J, Xie Y, Wang W, Zhang Y, Xie M, Zhang L. Speckle-Tracking Echocardiography in Right Ventricular Function of Clinically Well Patients with Heart Transplantation. Diagnostics (Basel) 2024; 14:1305. [PMID: 38928720 PMCID: PMC11203351 DOI: 10.3390/diagnostics14121305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 05/31/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024] Open
Abstract
Heart transplantation (HT) is the mainstream therapy for end-stage heart disease. However, the cardiac graft function can be affected by several factors. It is important to monitor HT patients for signs of graft dysfunction. Transthoracic echocardiography is a simple, first-line, and non-invasive method for the assessment of cardiac function. The emerging speckle-tracking echocardiography (STE) could quickly and easily provide additive information over traditional echocardiography. STE longitudinal deformation parameters are markers of early impairment of ventricular function. Although once called the "forgotten ventricle", right ventricular (RV) assessment has gained attention in recent years. This review highlights the potentially favorable role of STE in assessing RV systolic function in clinically well HT patients.
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Affiliation(s)
- Xiang Ji
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.J.); (J.Z.)
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Junmin Zhang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.J.); (J.Z.)
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Yuji Xie
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.J.); (J.Z.)
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Wenyuan Wang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.J.); (J.Z.)
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Yiwei Zhang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.J.); (J.Z.)
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Mingxing Xie
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.J.); (J.Z.)
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Li Zhang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; (X.J.); (J.Z.)
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan 430022, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
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von Scheidt W, Reichart B, Meiser B, von Scheidt M, Sen P, Schwarz F, Harmel E, Bengel FM, Dick A, Ueberfuhr P, Reichenspurner H, Jaeckel E, Schwinzer R, Hagl C. Unique 40-year survival after heart transplantation with normal graft function and spontaneous operational tolerance. Clin Res Cardiol 2024; 113:661-671. [PMID: 37982861 PMCID: PMC11026283 DOI: 10.1007/s00392-023-02341-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 11/07/2023] [Indexed: 11/21/2023]
Abstract
Unique 40-year survival after heart transplantation with normal graft function and spontaneous operational tolerance.
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Affiliation(s)
- Wolfgang von Scheidt
- I.Medizinische Klinik, University Hospital Augsburg, University of Augsburg, Stenglinstr. 2, 86156, Augsburg, Germany.
- Ludwig-Maximilians-University Munich, Munich, Germany.
| | - Bruno Reichart
- Department of Cardiac Surgery, University Hospital Großhadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Bruno Meiser
- Transplant Center, University Hospital Großhadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Moritz von Scheidt
- Department of Cardiovascular Diseases, German Heart Center Munich, Technical University Munich, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
| | - Partho Sen
- Department of Cardiovascular Diseases, German Heart Center Munich, Technical University Munich, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
| | - Florian Schwarz
- Ludwig-Maximilians-University Munich, Munich, Germany
- Department of Diagnostic and Interventional Radiology, University Hospital Augsburg, University of Augsburg, Augsburg, Germany
| | - Eva Harmel
- I.Medizinische Klinik, University Hospital Augsburg, University of Augsburg, Stenglinstr. 2, 86156, Augsburg, Germany
| | - Frank M Bengel
- Department of Nuclear Medicine, Hannover Medical School, Hannover, Germany
| | - Andrea Dick
- Laboratory for Immunogenetics and Molecular Diagnostics, University Hospital Großhadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Peter Ueberfuhr
- Department of Cardiac Surgery, University Hospital Großhadern, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Hermann Reichenspurner
- Department of Cardiovascular Surgery, University Heart and Vascular Center Hamburg, Hamburg, Germany
| | - Elmar Jaeckel
- Ajmera Transplant Center, UHN, University of Toronto, Toronto, Canada
| | - Reinhard Schwinzer
- Department of General-, Visceral- and Transplantation-Surgery, Hannover Medical School, Hannover, Germany
| | - Christian Hagl
- Department of Cardiac Surgery, University Hospital Großhadern, Ludwig-Maximilians-University Munich, Munich, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany
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Sun Z, Cai Y, Yang Y, Huang L, Xie Y, Zhu S, Wu C, Sun W, Zhang Z, Li Y, Wang J, Fang L, Yang Y, Lv Q, Dong N, Zhang L, Gu H, Xie M. Early left ventricular systolic function is a more sensitive predictor of adverse events after heart transplant. Int J Cardiol 2024; 398:131620. [PMID: 38036269 DOI: 10.1016/j.ijcard.2023.131620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 10/30/2023] [Accepted: 11/26/2023] [Indexed: 12/02/2023]
Abstract
BACKGROUND First-phase ejection fraction (EF1) is a novel measure of early changes in left ventricular systolic function. This study was to investigate the prognostic value of EF1 in heart transplant recipients. METHODS Heart transplant recipients were prospectively recruited at the Union Hospital, Wuhan, China between January 2015 and December 2019. All patients underwent clinical examination, biochemistry measures [brain natriuretic peptide (BNP) and creatinine] and transthoracic echocardiography. The primary endpoint was a combined event of all-cause mortality and graft rejection. RESULTS In 277 patients (aged 48.6 ± 12.5 years) followed for a median of 38.7 [26.8-45.0] months, there were 35 (12.6%) patients had adverse events including 20 deaths and 15 rejections. EF1 was negatively associated with BNP (β = -0.220, p < 0.001) and was significantly lower in patients with events compared to those without. EF1 had the largest area under the curve in ROC analysis compared to other measures. An optimal cut-off value of 25.8% for EF1 had a sensitivity of 96.3% and a specificity of 97.1% for prediction of events. EF1 was the most powerful predictor of events with hazard ratio per 1% change in EF1: 0.628 (95%CI: 0.555-0.710, p < 0.001) after adjustment for left ventricular ejection fraction and global longitudinal strain. CONCLUSIONS Early left ventricular systolic function as measured by EF1 is a powerful predictor of adverse outcomes after heart transplant. EF1 may be useful in risk stratification and management of heart transplant recipients.
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Affiliation(s)
- Zhenxing Sun
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Yu Cai
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Yujia Yang
- British Heart Foundation Centre of Research Excellence, King's College London, UK
| | - Lei Huang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Yuji Xie
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Shuangshuang Zhu
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Chun Wu
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Wei Sun
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Ziming Zhang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Yuman Li
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Jing Wang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Lingyun Fang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Yali Yang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Qing Lv
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China
| | - Nianguo Dong
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Li Zhang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China.
| | - Haotian Gu
- British Heart Foundation Centre of Research Excellence, King's College London, UK.
| | - Mingxing Xie
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, Wuhan 430022, China.
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6
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Schramm J, Cronin I, McCarter R, Mandell JG, Downing T, Kanter J, Cross R, Olivieri L. Cardiac magnetic resonance haemodynamics in paediatric heart transplant patients: fick oximetry versus cardiac magnetic resonance phase contrast. Cardiol Young 2024; 34:262-267. [PMID: 37317547 PMCID: PMC10721722 DOI: 10.1017/s1047951123001440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
BACKGROUND Lifetime radiation exposure for paediatric orthotopic heart transplant (OHT) patients is significant with cardiac catheterisation as the dominant source. Interventional cardiac magnetic resonance is utilised to obtain simultaneous, radiation-free haemodynamics and flow/function measurements. We sought to compare invasive haemodynamic measurements and radiation exposure in traditional cardiac catheterisation, to comprehensive interventional cardiac magnetic resonance. METHODS Twenty-eight OHT patients who underwent 67 interventional cardiac magnetic resonance procedures at Children's National Hospital were identified. Both invasive oximetry with peripheral oxygen saturation (Fick) and cardiac magnetic resonance phase contrast measurements of pulmonary and systemic blood flow were performed. Systemic and pulmonary blood flow from the two modalities was compared using Bland-Altman, concordance analysis, and inter-reader correlation. A mixed model was implemented to account for confounding variables and repeat encounters. Radiation dosage data were collected for a contemporaneous cohort of orthotopic heart transplant patients undergoing standard, X-ray-guided catheterisation. RESULTS Simultaneous cardiac magnetic resonance and Fick have poor agreement in our study based on Lin's correlation coefficient of 0.68 and 0.73 for pulmonary and systemic blood flow, respectively. Bland-Altman analysis demonstrated a consistent over estimation of cardiac magnetic resonance cardiac output by Fick. The average indexed dose area product for patients undergoing haemodynamics with endomyocardial biopsy was 0.73 (SD ±0.6) Gy*m2/kg. With coronary angiography added, the indexed dose area product was 14.6 (SD ± 7.8) Gy*m2/kg. CONCLUSIONS Cardiac magnetic resonancemeasurements of cardiac output/index in paediatric orthotopic heart transplant patients have poor concordance with Fick estimates; however, cardiac magnetic resonance has good internal validity and inter-reader reliability. Radiation doses are small for haemodynamics with biopsy and increase exponentially with angiography, identifying a new target for cardiac magnetic resonance imaging.
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Affiliation(s)
- Jennifer Schramm
- Department of Anesthesia and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Ileen Cronin
- Department of Pediatric Cardiology, Seattle Children's Hospital, Seattle, WA, USA
| | | | - Jason G Mandell
- Division of Pediatric Cardiology, University of Rochester Medical Center, Rochester, NY, USA
| | - Tacy Downing
- Department of Pediatric Cardiology, Children's National Medical Center, Washington, DC, USA
| | - Joshua Kanter
- Department of Pediatric Cardiology, Children's National Medical Center, Washington, DC, USA
| | - Russell Cross
- Department of Pediatric Cardiology, Children's National Medical Center, Washington, DC, USA
| | - Laura Olivieri
- Department of Pediatric Cardiology, Children's Hospital of Pittsburgh, One Children's Hospital DrivePittsburgh, PA, USA
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7
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Shah H, Lee I, Rao S, Suddath W, Rodrigo M, Mohammed S, Molina E, García-Garcia HM, Kenigsberg BB. Quantitative flow ratio computed from invasive coronary angiography as a predictor for cardiac allograft vasculopathy after cardiac transplant. THE INTERNATIONAL JOURNAL OF CARDIOVASCULAR IMAGING 2024; 40:451-458. [PMID: 38117378 DOI: 10.1007/s10554-023-03012-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 11/16/2023] [Indexed: 12/21/2023]
Abstract
Cardiac allograft vasculopathy (CAV) is a significant determinant of long-term survival in heart transplant recipients. Standard CAV screening typically utilizes invasive coronary angiography (ICA). Quantitative flow ratio (QFR) is a computational method for functional testing of coronary stenosis, and may add diagnostic value to ICA in assessing CAV. Consecutive subjects who received heart transplantation and underwent two separate routine coronary angiograms between January 2013 and April 2016 were enrolled. Coronary angiograms and IVUS were performed per local protocol at 1, 2, 3 and 5 years post-transplant. QFR was calculated offline. CAV was assessed semi-quantitively based on coronary angiogram results. Twenty-two patients were enrolled. Mean time from transplant to first included ICA was 2.1 years. QFR in at least 1 coronary vessel was interpretable in 19/22 (86%) of initial ICA (QFR1). QFR1 correlated well with the CAV score derived from the second ICA (CAV2) with a clustering of CAV at lower QFR values. In a receiver-operating characteristic (ROC) analysis, an optimal QFR threshold of 0.88 yielded 0.94 sensitivity and 0.67 specificity (AUC of 0.79) for at least non-obstructive subsequent CAV. Initial angiographically and intravascular ultrasound derived CAV severity poorly predicted subsequent CAV severity. QFR derived from invasive coronary angiography predicts subsequent development of CAV more accurately than angiography and intravascular ultrasound. This novel method of coronary flow assessment in recipients of heart transplantation may be useful to diagnose and predict subsequent CAV development.
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Affiliation(s)
- Harsh Shah
- Department of Cardiology, Jefferson Einstein Hospital, Philadelphia, PA, USA
| | - Injoon Lee
- Department of Medicine, MedStar Georgetown University Hospital, Washington, DC, USA
| | - Sriram Rao
- Department of Cardiology, MedStar Washington Hospital Center, Washington, DC, USA
| | - William Suddath
- Department of Cardiology, MedStar Washington Hospital Center, Washington, DC, USA
| | - Maria Rodrigo
- Department of Cardiology, MedStar Washington Hospital Center, Washington, DC, USA
| | - Selma Mohammed
- Department of Cardiology, Creighton University School of Medicine, Omaha, NE, USA
| | - Ezequiel Molina
- Department of Cardiac Surgery, Piedmont Heart Institute, Atlanta, GA, USA
| | - Hector M García-Garcia
- MedStar Cardiovascular Research Network, MedStar Washington Hospital Center, Washington, DC, USA
| | - Benjamin B Kenigsberg
- Department of Cardiology, MedStar Washington Hospital Center, Washington, DC, USA.
- Department of Critical Care, MedStar Washington Hospital Center, 110 Irving St., NW, Rm A121, Washington, DC, 20010, USA.
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Mehlman Y, Valledor AF, Moeller C, Rubinstein G, Lotan D, Rahman S, Oh KT, Bae D, DeFilippis EM, Lin EF, Lee SH, Raikhelkar JK, Fried J, Theodoropoulos K, Colombo PC, Yuzefpolskaya M, Latif F, Clerkin KJ, Sayer GT, Uriel N. The utilization of molecular microscope in management of heart transplant recipients in the era of noninvasive monitoring. Clin Transplant 2023; 37:e15131. [PMID: 37897211 DOI: 10.1111/ctr.15131] [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] [Received: 06/01/2023] [Revised: 09/03/2023] [Accepted: 09/06/2023] [Indexed: 10/29/2023]
Abstract
INTRODUCTION Monitoring for graft rejection is a fundamental tenet of post-transplant follow-up. In heart transplantation (HT) in particular, rejection has been traditionally assessed with endomyocardial biopsy (EMB). EMB has potential complications and noted limitations, including interobserver variability in interpretation. Additional tests, such as basic cardiac biomarkers, cardiac imaging, gene expression profiling (GEP) scores, donor-derived cell-free DNA (dd-cfDNA) and the novel molecular microscope diagnostic system (MMDx) have become critical tools in rejection surveillance beyond standard EMB. METHODS This paper describes an illustrative case followed by a review of MMDx within the context of other noninvasive screening modalities for rejection. CONCLUSIONS We suggest MMDx be used to assist with early detection of rejection in cases of discordance between EMB and other noninvasive studies.
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Affiliation(s)
- Yonatan Mehlman
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Andrea Fernendez Valledor
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Cathrine Moeller
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Gal Rubinstein
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Dor Lotan
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Salwa Rahman
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Kyung T Oh
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - David Bae
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Ersilia M DeFilippis
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Edward F Lin
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Sun Hi Lee
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Jayant K Raikhelkar
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Justin Fried
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Kleanthis Theodoropoulos
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Paolo C Colombo
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Melana Yuzefpolskaya
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Farhana Latif
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Kevin J Clerkin
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Gabriel T Sayer
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
| | - Nir Uriel
- Division of Cardiology, Center for Advanced Cardiac Care, Columbia University Irving Medical Center, New York, New York, USA
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9
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Sciaccaluga C, Natali BM, Righini FM, Sorini Dini C, Landra F, Mandoli GE, Sisti N, Menci D, D'Errico A, D'Ascenzi F, Focardi M, Bernazzali S, Maccherini M, Valente S, Cameli M. Heart transplantation and anti-HLA antibodY: myocardial dysfunction and prognosis - HeartLAy study. ESC Heart Fail 2023; 10:2853-2864. [PMID: 37415291 PMCID: PMC10567642 DOI: 10.1002/ehf2.14442] [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] [Received: 04/29/2023] [Accepted: 06/08/2023] [Indexed: 07/08/2023] Open
Abstract
AIMS The presence of anti-human leucocyte antigen (HLA) antibodies has been implicated in a higher incidence of complications as well as mortality rate in heart transplantation. The aim of the study was to identify through non-invasive parameters early signs of myocardial dysfunction in the presence of anti-HLA antibodies but without evidence of antibody-mediated rejection (AMR) and its possible prognostic impact. METHODS AND RESULTS A total of 113 heart-transplanted patients without acute cellular rejection (ACR) and AMR or cardiac allograft vasculopathy (CAV) were prospectively enrolled and divided into two groups ['HLA+' (50 patients) and 'HLA-' (63 patients)], based on the presence of anti-HLA antibodies. Each patient was followed for 2 years after the enrolment, recording episodes of AMR, ACR, CAV, and mortality. Clinical characteristics were similar between the two groups. Among laboratory data, N-terminal pro-B-type natriuretic peptide and high-sensitivity cardiac troponin values were significantly higher in the presence of anti-HLA antibodies (P < 0.001 and P = 0.003, respectively). The echocardiographic parameters that showed a statistically significant difference between the two groups were deceleration time of E wave (DecT E, P < 0.001), left ventricular global longitudinal strain (P < 0.001), tricuspid annular plane systolic excursion (P = 0.011), tricuspid S' wave (P = 0.002), and free wall right ventricular longitudinal strain (fwRVLS, P = 0.027), whereas left atrial strain did not differ significantly (P = 0.408). Univariate analysis showed that anti-HLA antibodies were associated with the development of CAV at both 1 and 2 year follow-up [odds ratio (OR) 11.90, 95% confidence interval (CI) 1.43-90.79, P = 0.022 and OR 3.37, 95% CI 1.78-9.67, P = 0.024, respectively]. Bivariate analysis demonstrated that both fwRVLS and DecT E were predictors of CAV development independently from HLA status. CONCLUSIONS The presence of circulating anti-HLA antibodies is correlated with a mild cardiac dysfunction, even in the absence of AMR, and CAV development. Interestingly, reduced values of DecT E and fwRVLS were predictors of future development of CAV, independently from anti-HLA antibody.
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Affiliation(s)
- Carlotta Sciaccaluga
- Division of Cardiology, Department of Medical BiotechnologiesUniversity of SienaSienaItaly
| | - Benedetta Maria Natali
- Division of Cardiology, Department of Medical BiotechnologiesUniversity of SienaSienaItaly
| | | | - Carlotta Sorini Dini
- Division of Cardiology, Department of Medical BiotechnologiesUniversity of SienaSienaItaly
| | - Federico Landra
- Division of Cardiology, Department of Medical BiotechnologiesUniversity of SienaSienaItaly
| | - Giulia Elena Mandoli
- Division of Cardiology, Department of Medical BiotechnologiesUniversity of SienaSienaItaly
| | - Nicolò Sisti
- Division of Cardiology, Department of Medical BiotechnologiesUniversity of SienaSienaItaly
| | - Daniele Menci
- Division of Cardiology, Department of Medical BiotechnologiesUniversity of SienaSienaItaly
| | | | - Flavio D'Ascenzi
- Division of Cardiology, Department of Medical BiotechnologiesUniversity of SienaSienaItaly
| | - Marta Focardi
- Division of Cardiology, Department of Medical BiotechnologiesUniversity of SienaSienaItaly
| | | | | | - Serafina Valente
- Division of Cardiology, Department of Medical BiotechnologiesUniversity of SienaSienaItaly
| | - Matteo Cameli
- Division of Cardiology, Department of Medical BiotechnologiesUniversity of SienaSienaItaly
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10
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Wu MY, Ali Khawaja RD, Vargas D. Heart Transplantation: Indications, Surgical Techniques, and Complications. Radiol Clin North Am 2023; 61:847-859. [PMID: 37495292 DOI: 10.1016/j.rcl.2023.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
Heart transplantation has been increasingly performed for patients with end-stage heart failure most commonly related to ischemic and non-ischemic cardiomyopathies. The major complications are procedure-related complications, infection, acute rejection, cardiac allograft vasculopathy, and malignancy. Radiologists have an important role in the evaluation of transplant candidates and early detection of postoperative complications.
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Affiliation(s)
- Markus Y Wu
- Department of Radiology, University of Colorado, 12401 East 17th Avenue, Aurora, CO 80045, USA.
| | - Ranish Deedar Ali Khawaja
- Department of Radiology, University of Colorado, 12401 East 17th Avenue, Aurora, CO 80045, USA. https://twitter.com/RanishKhawaja
| | - Daniel Vargas
- Department of Radiology, University of Colorado, 12401 East 17th Avenue, Aurora, CO 80045, USA. https://twitter.com/DanielVargasMD
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11
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Shahandeh N, Parikh RV. Invasive Intracoronary Imaging of Cardiac Allograft Vasculopathy: Established Modalities and Emerging Technologies. Interv Cardiol Clin 2023; 12:269-280. [PMID: 36922067 DOI: 10.1016/j.iccl.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Despite advances in the care of heart transplant recipients during the past 5 decades, cardiac allograft vasculopathy (CAV) continues to be a major barrier to long-term survival. The early diagnosis and treatment of CAV is crucial for improving long-term outcomes. Coronary angiography, the current gold standard for CAV screening, has low sensitivity for detecting early CAV. Increasingly, invasive intracoronary imaging modalities that provide a more detailed analysis of vessel anatomy and allow for plaque characterization are being used to detect CAV earlier after transplant and uncover mechanistic insights. Studies validating these emerging imaging platforms are needed before their widespread adoption.
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Affiliation(s)
- Negeen Shahandeh
- Division of Cardiology, University of California, 100 Medical Plaza, Suite 630 East, Los Angeles, CA 90095, USA
| | - Rushi V Parikh
- Division of Cardiology, University of California, Los Angeles, 100 Medical Plaza, Suite 630 West, Los Angeles, CA 90095, USA.
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12
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Seguchi O, Azarbal B, Mirocha J, Youn JC, Passano E, Patel J, Kobashigawa J. Change in First-year Intravascular Ultrasound Results Predicts Adverse Events in Heart Transplant Recipients: Implications for Clinical Trial Endpoints. Transplantation 2023; 107:737-747. [PMID: 36358011 DOI: 10.1097/tp.0000000000004395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Heart transplantation (HTx) is an established therapeutic option for patients with advanced heart failure who are refractory to conventional guideline-directed treatments. This study aimed to reassess whether intravascular ultrasound variables could predict adverse events after HTx in the modern era. METHODS One hundred primary HTx recipients with available serial intravascular ultrasound examination results of the left anterior descending artery 4-8 wk and 1 y after HTx were enrolled, with an average follow-up duration of 5.7 y. The primary endpoint was a composite of all-cause death, nonfatal major adverse cardiac events, and angiographic cardiac allograft vasculopathy. RESULTS Forty-three patients developed primary endpoints. The baseline maximal intimal thickness was independently associated with the primary endpoint (hazard ratio, 8.24; 95% confidential interval [CI], 3.21-21.21; P < 0.001), and the optimal cutoff value was 0.64 mm. A change in the plaque atheroma volume in a proximal 20-mm segment from the left anterior descending artery bifurcation >1.05 mm 3 /mm (hazard ratio, 2.75; 95% CI, 1.28-5.89; P = 0.009) and a change in the first-year maximal intimal thickness >0.27 mm (hazard ratio, 2.63; 95% CI, 1.05-6.56; P = 0.04) were independent predictors of the primary endpoint 1 y after intravascular ultrasonography. CONCLUSIONS The aforementioned important clinical implications of intravascular ultrasound parameters are useful predictors of outcomes, which may be considered endpoints in modern clinical HTx trials.
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Affiliation(s)
- Osamu Seguchi
- Department of Cardiology, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA
- Department of Transplant Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Babak Azarbal
- Department of Cardiology, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA
| | - James Mirocha
- Biostatistics and Bioinformatics Research Center, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Jong-Chan Youn
- Department of Cardiology, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA
- Division of Cardiology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Elizabeth Passano
- Department of Cardiology, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA
| | - Jignesh Patel
- Department of Cardiology, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA
| | - Jon Kobashigawa
- Department of Cardiology, Cedars-Sinai Smidt Heart Institute, Los Angeles, CA
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13
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Planinc I, Ilic I, Dejea H, Garcia-Canadilla P, Gasparovic H, Jurin H, Milicic D, Skoric B, Stampanoni M, Bijnens B, Bonnin A, Cikes M. A Novel Three-Dimensional Approach Towards Evaluating Endomyocardial Biopsies for Follow-Up After Heart Transplantation: X-Ray Phase Contrast Imaging and Its Agreement With Classical Histopathology. Transpl Int 2023; 36:11046. [PMID: 36762268 PMCID: PMC9904361 DOI: 10.3389/ti.2023.11046] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 01/09/2023] [Indexed: 01/26/2023]
Abstract
Endomyocardial biopsies are the gold standard for surveillance of graft rejection following heart transplantation, and are assessed by classical histopathology using a limited number of previously stained slices from several biopsies. Synchrotron propagation-based X-ray phase contrast imaging is a non-destructive method to image biological samples without tissue preparation, enabling virtual 2D and 3D histopathology. We aimed to show the feasibility of this method to assess acute cellular rejection and its agreement to classical histopathology. Right ventricular biopsies were sampled from 23 heart transplantation recipients (20 males, mean age 54±14 years) as part of standard follow-up. The clinical diagnosis of potential rejection was made using classical histopathology. One additional study sample was harvested and imaged by X-ray phase contrast imaging, producing 3D datasets with 0.65 μm pixel size, and up to 4,320 images per sample. An experienced pathologist graded both histopathological and X-ray phase contrast images in a blinded fashion. The agreement between methods was assessed by weighted kappa, showing substantial agreement (kappa up to 0.80, p < 0.01) between X-ray phase contrast imaging and classical histopathology. X-ray phase contrast imaging does not require tissue processing, allows thorough analysis of a full myocardial sample and allows identification of acute cellular rejection.
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Affiliation(s)
- Ivo Planinc
- Department of Cardiovascular Diseases, University Hospital Centre Zagreb, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Ivana Ilic
- Department of Pathology and Cytology, University Hospital Centre Zagreb, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Hector Dejea
- Paul Scherrer Institute (PSI), Villigen, Switzerland,Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
| | - Patricia Garcia-Canadilla
- Institut de Recerca Biomèdica August Pi i Sunyer (IDIBAPS), Barcelona, Spain,BCNatal-Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Sant Joan de Déu and Hospital Clínic, University of Barcelona, Barcelona, Spain,Cardiovascular Diseases and Child Development, Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Spain
| | - Hrvoje Gasparovic
- Department of Cardiac Surgery, University Hospital Centre Zagreb, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Hrvoje Jurin
- Department of Cardiovascular Diseases, University Hospital Centre Zagreb, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Davor Milicic
- Department of Cardiovascular Diseases, University Hospital Centre Zagreb, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Bosko Skoric
- Department of Cardiovascular Diseases, University Hospital Centre Zagreb, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Marco Stampanoni
- Paul Scherrer Institute (PSI), Villigen, Switzerland,Institute for Biomedical Engineering, University and ETH Zurich, Zurich, Switzerland
| | - Bart Bijnens
- Institut de Recerca Biomèdica August Pi i Sunyer (IDIBAPS), Barcelona, Spain,Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain
| | - Anne Bonnin
- Paul Scherrer Institute (PSI), Villigen, Switzerland
| | - Maja Cikes
- Department of Cardiovascular Diseases, University Hospital Centre Zagreb, University of Zagreb School of Medicine, Zagreb, Croatia,*Correspondence: Maja Cikes,
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14
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Velleca A, Shullo MA, Dhital K, Azeka E, Colvin M, DePasquale E, Farrero M, García-Guereta L, Jamero G, Khush K, Lavee J, Pouch S, Patel J, Michaud CJ, Shullo M, Schubert S, Angelini A, Carlos L, Mirabet S, Patel J, Pham M, Urschel S, Kim KH, Miyamoto S, Chih S, Daly K, Grossi P, Jennings D, Kim IC, Lim HS, Miller T, Potena L, Velleca A, Eisen H, Bellumkonda L, Danziger-Isakov L, Dobbels F, Harkess M, Kim D, Lyster H, Peled Y, Reinhardt Z. The International Society for Heart and Lung Transplantation (ISHLT) Guidelines for the Care of Heart Transplant Recipients. J Heart Lung Transplant 2022; 42:e1-e141. [PMID: 37080658 DOI: 10.1016/j.healun.2022.10.015] [Citation(s) in RCA: 109] [Impact Index Per Article: 54.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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15
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Velleca A, Shullo MA, Dhital K, Azeka E, Colvin M, DePasquale E, Farrero M, García-Guereta L, Jamero G, Khush K, Lavee J, Pouch S, Patel J, Michaud CJ, Shullo M, Schubert S, Angelini A, Carlos L, Mirabet S, Patel J, Pham M, Urschel S, Kim KH, Miyamoto S, Chih S, Daly K, Grossi P, Jennings D, Kim IC, Lim HS, Miller T, Potena L, Velleca A, Eisen H, Bellumkonda L, Danziger-Isakov L, Dobbels F, Harkess M, Kim D, Lyster H, Peled Y, Reinhardt Z. The International Society for Heart and Lung Transplantation (ISHLT) Guidelines for the Care of Heart Transplant Recipients. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.09.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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16
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Sciaccaluga C, Fusi C, Landra F, Barilli M, Lisi M, Mandoli GE, D’Ascenzi F, Focardi M, Valente S, Cameli M. Diastolic function in heart transplant: From physiology to echocardiographic assessment and prognosis. Front Cardiovasc Med 2022; 9:969270. [DOI: 10.3389/fcvm.2022.969270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 10/10/2022] [Indexed: 11/13/2022] Open
Abstract
Heart transplant (HTx) still represents the most effective therapy for end-stage heart failure, with a median survival time of 10 years. The transplanted heart shows peculiar physiology due to the profound alterations induced by the operation, which inevitably influences several echocardiographic parameters assessed during these patients’ follow-ups. With these premises, the diastolic function is one of the main aspects to take into consideration. The left atrium (LA) plays a key role in this matter, and that same chamber is significantly impaired with the transplant, with different degrees of altered function based on the surgical technique. Therefore, the traditional echocardiographic evaluation of diastolic function applied to the general population might not properly reflect the physiology of the graft. This review attempts to provide current evidence on diastolic function in HTx starting from defining its different physiology and how the standard echocardiographic parameters might be affected to its prognostic role. Furthermore, based on the experience of our center and the available evidence, we proposed an algorithm that might help clinicians distinguish from actual diastolic dysfunction from a normal diastolic pattern in HTx population.
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17
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Nelson LM, Christensen TE, Rossing K, Hasbak P, Gustafsson F. Prognostic value of myocardial flow reserve obtained by 82-rubidium positron emission tomography in long-term follow-up after heart transplantation. J Nucl Cardiol 2022; 29:2555-2567. [PMID: 34414554 DOI: 10.1007/s12350-021-02742-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 06/25/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Cardiac allograft vasculopathy (CAV) is a leading cause of death following heart transplantation (HTx) and non-invasive prognostic methods in long-term CAV surveillance are needed. We evaluated the prognostic value of myocardial flow reserve (MFR) obtained by 82-rubidium (82Rb) positron emission tomography (PET). METHODS Recipients undergoing dynamic rest-stress 82Rb PET between April 2013 and June 2017 were retrospectively evaluated in a single-center study. Evaluation by PET included quantitative myocardial blood flow and semiquantitative myocardial perfusion imaging. Patients were grouped by MFR (MFR ≤ 2.0 vs MFR > 2.0) and the primary outcome was all-cause mortality. RESULTS A total of 50 patients (68% men, median age 57 [IQR: 43 to 68]) were included. Median time from HTx to PET was 10.0 (6.7 to 16.0) years. In 58% of patients CAV was documented prior to PET. During a median follow-up of 3.6 (2.3 to 4.3) years 12 events occurred. Survival probability by Kaplan-Meier method was significantly higher in the high-MFR group (log-rank P = .02). Revascularization (n = 1), new CAV diagnosis (n = 1), and graft failure (n = 4) were more frequent in low-MFR patients. No retransplantation occurred. CONCLUSIONS Myocardial flow reserve appears to offer prognostic value in selected long-term HTx recipients and holds promise as a non-invasive method for CAV surveillance possibly guiding management strategy.
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Affiliation(s)
- Lærke Marie Nelson
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark.
| | - Thomas Emil Christensen
- Department of Clinical Physiology, Nuclear Medicine and PET, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Department of Medicine, Holbæk Hospital, Holbæk, Region Zealand, Denmark
| | - Kasper Rossing
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark
| | - Philip Hasbak
- Department of Clinical Physiology, Nuclear Medicine and PET, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Finn Gustafsson
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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18
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Zhu S, Zhang Y, Qiao W, Wang Y, Xie Y, Zhang X, Wu C, Wang G, Li Y, Dong N, Xie M, Zhang L. Incremental value of preoperative right ventricular function in predicting moderate to severe acute kidney injury after heart transplantation. Front Cardiovasc Med 2022; 9:931517. [PMID: 36017097 PMCID: PMC9398196 DOI: 10.3389/fcvm.2022.931517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/18/2022] [Indexed: 11/21/2022] Open
Abstract
Background Acute kidney injury (AKI) commonly occurs after heart transplantation (HTx), but its association with preoperative right ventricular (RV) function remains unknown. Consequently, we aimed to determine the predictive value of preoperative RV function for moderate to severe AKI after HTx. Materials and methods From 1 January 2016 to 31 December 2019, all the consecutive HTx recipients in our center were enrolled and analyzed for the occurrence of postoperative AKI staged by the Kidney Disease: Improving Global Outcomes (KDIGO) criteria. Conventional RV function parameters, including RV fractional area change (RVFAC) and tricuspid annular plane systolic excursion (TAPSE), were obtained. The primary endpoint was moderate to severe AKI (the KDIGO stage 2 or 3). The secondary endpoints included the impact of AKI on intensive care unit (ICU) mortality, in-hospital mortality, and 1-year mortality. Results A total of 273 HTx recipients were included in the study. Postoperative AKI occurred in 209 (77%) patients, including 122 (45%) patients in stage 1 AKI, 49 (18%) patients in stage 2 AKI, and 38 (14%) patients in stage 3 AKI. Patients with higher AKI stage had lower baseline estimated glomerular filtration rate (eGFR), more frequent diabetes, higher right atrial pressure (RAP), longer cardiopulmonary bypass (CPB) duration, more perioperative red blood cell (RBC) transfusions, and worse preoperative RV function. A multivariate logistic regression model incorporating previous diabetes mellitus [odds ratio (OR): 2.21; 95% CI: 1.06–4.61; P = 0.035], baseline eGFR (OR: 0.99; 95% CI: 0.97–0.10; P = 0.037), RAP (OR: 1.05; 95% CI: 1.00–1.10; P = 0.041), perioperative RBC (OR: 1.18; 95% CI: 1.08–1.28; P < 0.001), and TAPSE (OR: 0.84; 95% CI: 0.79–0.91; P < 0.001) was established to diagnose moderate to severe AKI more accurately [the area under the curve (AUC) = 79.8%; Akaike information criterion: 274]. Conclusion Preoperative RV function parameters provide additional predicting value over clinical and hemodynamic parameters, which are imperative for risk stratification in patients with HTx at higher risk of AKI.
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Affiliation(s)
- Shuangshuang Zhu
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Yanting Zhang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Weihua Qiao
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yixuan Wang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuji Xie
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Xin Zhang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Chun Wu
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Guohua Wang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuman Li
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Nianguo Dong
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Nianguo Dong,
| | - Mingxing Xie
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
- Mingxing Xie,
| | - Li Zhang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Clinical Research Center for Medical Imaging in Hubei Province, Wuhan, China
- Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
- Li Zhang,
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19
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Shahandeh N, Kashiyama K, Honda Y, Nsair A, Ali ZA, Tobis JM, Fearon WF, Parikh RV. Invasive Coronary Imaging Assessment for Cardiac Allograft Vasculopathy: State-of-the-Art Review. JOURNAL OF THE SOCIETY FOR CARDIOVASCULAR ANGIOGRAPHY & INTERVENTIONS 2022; 1:100344. [PMID: 39131933 PMCID: PMC11307976 DOI: 10.1016/j.jscai.2022.100344] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/07/2022] [Accepted: 04/17/2022] [Indexed: 08/13/2024]
Abstract
Heart transplantation is the standard of care treatment for end-stage heart failure. Therapeutic advances including enhanced immunosuppression and aggressive infectious prophylaxis have led to increased life-expectancy following transplantation; however, cardiac allograft vasculopathy (CAV) remains a leading cause of morbidity and mortality. Although coronary angiography is the current guideline-recommended diagnostic modality for invasive CAV screening, it is limited in its ability to detect early and/or diffuse disease. Efforts to improve outcomes for heart transplant recipients with CAV have focused on developing diagnostic tools with greater sensitivity to capture early CAV in order to better understand the pathobiology and implement treatment to slow disease progression sooner after transplant. The contemporary invasive imaging armamentarium for CAV surveillance includes coronary angiography, intravascular ultrasound, and newer technologies including optical coherence tomography and near-infrared spectroscopy. The present review outlines the use of and data in support of these imaging platforms in the CAV arena and highlights the potential advantages and limitations of each of these modalities.
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Affiliation(s)
- Negeen Shahandeh
- Division of Cardiology, University of California Los Angeles, Los Angeles, California
| | - Kuninobu Kashiyama
- Division of Cardiovascular Medicine, Stanford University, Stanford, California
| | - Yasuhiro Honda
- Division of Cardiovascular Medicine, Stanford University, Stanford, California
| | - Ali Nsair
- Division of Cardiology, University of California Los Angeles, Los Angeles, California
| | - Ziad A. Ali
- DeMatteis Cardiovascular Institute, St Francis Hospital & Heart Center, Roslyn, New York
- Cardiovascular Research Foundation, New York, New York
| | - Jonathan M. Tobis
- Division of Cardiology, University of California Los Angeles, Los Angeles, California
| | - William F. Fearon
- Division of Cardiovascular Medicine, Stanford University and VA Palo Alto Health Care Systems, Stanford, California
| | - Rushi V. Parikh
- Division of Cardiology, University of California Los Angeles, Los Angeles, California
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20
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Ojha V, Ganga KP, Mani A, Jagia P, Gulati G, Seth S, Nakra T, Arava S, Kumar S, Ray R, Sharma S. Detection of cardiac allograft vasculopathy on dual source computed tomography in heart transplant recipients: comparison with invasive coronary angiography. Br J Radiol 2022; 95:20211237. [PMID: 35230144 PMCID: PMC10996423 DOI: 10.1259/bjr.20211237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 02/10/2022] [Accepted: 02/17/2022] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE We aimed to evaluate the diagnostic accuracy (DA) of dual-source CT coronary angiography (DSCTCA) against invasive coronary angiography (ICA) in assessing stenotic cardiac allograft vasculopathy (CAV) in heart transplant (HTX) recipients. METHODS Consecutive HTX recipients(n = 38) on annual surveillance, underwent DSCTCA prior to ICA on a 192-detector 384-slice DSCT scanner. Cases were classified as no CAV (no stenosis), any CAV (any degree of stenosis) or significant CAV (>50% stenosis). RESULTS Mean age was 33.66 ± 11.45 years (M:F = 27:11, median time from HTX-23.5 months). Prevalence of any CAV on DSCTCA and ICA was 44.7%(n = 17) and 39.5%(n = 15), respectively and that of significant CAV was 21.1%(n = 8) and 15.8%(n = 6), respectively. 557 (96.7%) segments were interpretable on DSCTCA. Mean radiation dose was 4.24 ± 2.15 mSv. At patient-level, the sensitivity, specificity, positive-predictive value, negative-predictive value (NPV), and DA of DSCTCA for detection of any CAV and significant CAV were 100%, 91.3%, 88.2%, 100%, 94.73% and 100%, 94%, 75%, 100%, 95% respectively. The same on segment-based analysis were 96%, 97.6%, 80%, 99.6%, 97.5% and 100%, 99.6%,86.7%,100%, 99.6%, respectively. There was excellent agreement between the two modalities for detection of any CAV and significant CAV [κ = 0.892 and 0.826 (patient-level), 0.859 and 0.927 (segment-level)]. CAC score correlated significantly with the presence of any CAV on both modalities. A diagnosis of rejection on biopsy did not correlate with any/significant CAV on DSCTCA or ICA. CONCLUSION High sensitivity and NPV of DSCTCA in the evaluation of stenotic CAV suggests that it can be an accurate and non-invasive alternative to ICA for routine surveillance of HTX recipients. ADVANCES IN KNOWLEDGE DSCTCA detects the stenotic CAV non-invasively in transplant recipients with high sensitivity, specificity and NPV when compared with catheter coronary angiography, at lower radiation doses. There is excellent agreement between CT angiography and catheter coronary angiography for detection of any CAV and significant CAV. A diagnosis of rejection on biopsy does not correlate with any/significant CAV on CT angiography or catheter angiography.
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Affiliation(s)
- Vineeta Ojha
- Department of Cardiovascular Radiology and Endovascular
Interventions, All India Institute of Medical Sciences,
New Delhi, India
| | - Kartik P Ganga
- Department of Cardiovascular Radiology and Endovascular
Interventions, All India Institute of Medical Sciences,
New Delhi, India
| | - Avinash Mani
- Department of Cardiology, , Sri Chitra Tirunal Institute of
Medical Science and Technology, Trivandrum,
Kerala, India
| | - Priya Jagia
- Department of Cardiovascular Radiology and Endovascular
Interventions, All India Institute of Medical Sciences,
New Delhi, India
| | - Gurpreet Gulati
- Department of Cardiovascular Radiology and Endovascular
Interventions, All India Institute of Medical Sciences,
New Delhi, India
| | - Sandeep Seth
- Department of Cardiology, All India Institute of Medical
Sciences, New Delhi,
India
| | - Tripti Nakra
- Department of Pathology, All India Institute of Medical
Sciences, New Delhi,
India
| | - Sudheer Arava
- Department of Pathology, All India Institute of Medical
Sciences, New Delhi,
India
| | - Sanjeev Kumar
- Department of Cardiovascular Radiology and Endovascular
Interventions, All India Institute of Medical Sciences,
New Delhi, India
| | - Ruma Ray
- Department of Pathology, All India Institute of Medical
Sciences, New Delhi,
India
| | - Sanjiv Sharma
- Department of Cardiovascular Radiology and Endovascular
Interventions, All India Institute of Medical Sciences,
New Delhi, India
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21
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Clinical Utility of SPECT in the Heart Transplant Population: Analysis From a Single Large-volume Center. Transplantation 2022; 106:623-632. [PMID: 33901107 PMCID: PMC8528902 DOI: 10.1097/tp.0000000000003791] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Survival after heart transplant has greatly improved, with median survival now over 12 years. Cardiac allograft vasculopathy (CAV) has become a major source of long-term morbidity and mortality. Single-photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI) is used for CAV surveillance, but there is limited data on its prognostic utility. METHODS We retrospectively identified patients undergoing SPECT MPI for CAV surveillance at a single, large-volume center. Images were assessed with semiquantitative visual scoring (summed stress score [SSS] and summed rest score) and quantitatively with total perfusion defect (TPD). RESULTS We studied 503 patients (mean age 62.5, 69.3% male) at a median of 9.0 years post-transplant. During mean follow-up of 5.1 ± 2.5 years, 114 (22.6%) patients died. The diagnostic accuracy for significant CAV (ISHLT grade 2 or 3) was highest for SSS with an area under the curve of 0.650 and stress TPD (area under the curve, 0.648), with no significant difference between SSS and stress TPD (P = 0.061). Stress TPD (adjusted hazard ratio, 1.07; P = 0.018) was independently associated with all-cause mortality, while SSS was not (P = 0.064). The prognostic accuracy of quantitative assessment of perfusion tended to be higher compared with semiquantitative assessment, with the highest accuracy for stress TPD (area under the receiver operating curve 0.584). CONCLUSIONS While SPECT MPI identified a cohort of higher risk patients, with quantitative analysis of perfusion demonstrating higher prognostic accuracy. However, the overall prognostic accuracy was modest and alternative noninvasive modalities may be more suitable for CAV surveillance.
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22
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Sharma D, Subramaniam G, Sharma N, Sharma P, Sharma P. Insight into Noninvasive Radiological Modalities to Detect Heart Transplant Rejection. Indian J Radiol Imaging 2022; 31:946-955. [PMID: 35136508 PMCID: PMC8817810 DOI: 10.1055/s-0041-1741098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Abstract
Purpose Patients with end-stage heart failure who remain symptomatic even with exemplary medical and device therapy are treated with heart transplantation. Multitudes of endeavor have been contrived during the last decennium in the field of noninvasive tests to rule out heart transplant rejection (HTR). In spite of having supportive literature, noninvasive imaging techniques lack acceptable documentation of clinical robustness, and endomyocardial biopsy (EMB) still remains the gold standard. The aim of this review is to shed light on the existing noninvasive radiological modalities to detect rejection among heart transplant recipients.
Methods A comprehensive search was conducted for this review article on the basis of literature available including scientific databases of PubMed, Embase, and Google Scholar, using keywords of “Heart transplantation,” “Acute allograft rejection,” “Arrhythmias,” “Echocardiography,” “Speckle tracking echocardiography,” and “Cardiac magnetic resonance imaging” from inception until September 2020.
Results After preliminary screening of the databases, details regarding existent noninvasive radiological modalities to detect HTR were gathered and compiled in this review article. Currently, deformation imaging using speckle tracking and T2 time using cardiac magnetic resonance imaging can serve as screening tools based on which further invasive investigations can be planned. Standardization of blood-based and imaging modalities as screening and possible diagnostic tools for rejection would have obvious clinical and financial benefits in the care of growing number of post heart transplant recipients in our country.
Conclusion Diagnosis of allograft rejection in heart transplant recipients through noninvasive techniques is demanding. To unravel the potential of noninvasive radiological modalities that can serve as a standard-of-care test, a prospective multicentric study randomizing noninvasive modality as first strategy versus current EMB-based gold standard of care is the need of the hour.
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Affiliation(s)
- Dhruva Sharma
- Department of Cardiothoracic and Vascular Surgery, SMS Medical College and Attached Hospitals, Jaipur, Rajasthan, India
| | - Ganapathy Subramaniam
- Department of Cardiothoracic Surgery, Institute of Heart and Lung Transplant and Mechanical Circulatory Support, MGM Healthcare, Chennai, Tamil Nadu, India
| | - Neha Sharma
- Department of Pharmacology, SMS Medical College and Attached Hospitals, Jaipur, Rajasthan, India
| | - Preksha Sharma
- Department of Anatomy, SMS Medical College and Attached Hospitals, Jaipur, Rajasthan, India
| | - Pooja Sharma
- Department of Cardiology, Eternal Heart Care Centre, Jaipur, Rajasthan, India
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23
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Non-Invasive Imaging in the Evaluation of Cardiac Allograft Vasculopathy in Heart Transplantation: A Systematic Review. Curr Probl Cardiol 2022; 47:101103. [PMID: 35016989 DOI: 10.1016/j.cpcardiol.2022.101103] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 01/03/2022] [Indexed: 11/22/2022]
Abstract
Cardiac allograft vasculopathy (CAV) is the leading cause of long-term graft dysfunction in patients with heart transplantation and is linked with significant morbidity and mortality. Currently, the gold standard for diagnosing CAV is coronary imaging with intravascular ultrasound (IVUS) during traditional invasive coronary angiography (ICA). Invasive imaging, however, carries increased procedural risk and expense to patients in addition to requiring an experienced interventionalist. With the improvements in non-invasive cardiac imaging modalities such as transthoracic echocardiography (TTE), computed tomography (CT), magnetic resonance imaging (MRI) and positron emission tomography (PET), an alternative non-invasive imaging approach for the early detection of CAV may be feasible. In this systematic review, we explored the literature to investigate the utility of non-invasive imaging in diagnosis of CAV in >3000 patients across 49 studies. We also discuss the strengths and weaknesses for each imaging modality. Overall, all four imaging modalities show good to excellent accuracy for identifying CAV with significant variations across studies. Majority of the studies compared non-invasive imaging with ICA without intravascular imaging. In summary, non-invasive imaging modalities offer an alternative approach to invasive coronary imaging for CAV. Future studies should investigate longitudinal non-invasive protocols in low-risk patients after heart transplantation.
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24
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Masarone D, Kittleson M, Gravino R, Valente F, Petraio A, Pacileo G. The Role of Echocardiography in the Management of Heart Transplant Recipients. Diagnostics (Basel) 2021; 11:2338. [PMID: 34943575 PMCID: PMC8699946 DOI: 10.3390/diagnostics11122338] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 11/29/2021] [Accepted: 12/09/2021] [Indexed: 01/30/2023] Open
Abstract
Transthoracic echocardiography is the primary non-invasive modality for the investigation of heart transplant recipients. It is a versatile tool that provides comprehensive information on cardiac structure and function. Echocardiography is also helpful in diagnosing primary graft dysfunction and evaluating the effectiveness of therapeutic approaches for this condition. In acute rejection, echocardiography is useful with suspected cellular or antibody-mediated rejection, with findings confirmed and quantified by endomyocardial biopsy. For identifying chronic rejection, ultrasound has a more significant role and, in some specific patients (e.g., patients with renal failure), it may offer a role comparable to coronary angiography to identify cardiac allograft vasculopathy. This review highlights the usefulness of echocardiography in evaluating normal graft function and its role in the management of heart transplant recipients.
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Affiliation(s)
- Daniele Masarone
- Heart Failure Unit, Department of Cardiology, AORN dei Colli-Monaldi Hospital, 80131 Naples, Italy; (R.G.); (F.V.); (G.P.)
| | - Michelle Kittleson
- Department of Cardiology, Smidt Heart Institute, Cedars-Sinai, Los Angeles, CA 90048, USA;
| | - Rita Gravino
- Heart Failure Unit, Department of Cardiology, AORN dei Colli-Monaldi Hospital, 80131 Naples, Italy; (R.G.); (F.V.); (G.P.)
| | - Fabio Valente
- Heart Failure Unit, Department of Cardiology, AORN dei Colli-Monaldi Hospital, 80131 Naples, Italy; (R.G.); (F.V.); (G.P.)
| | - Andrea Petraio
- Heart Transplant Unit, Department of Cardiac Surgery and Transplantology, AORN dei Colli-Monaldi Hospital, 80131 Naples, Italy;
| | - Giuseppe Pacileo
- Heart Failure Unit, Department of Cardiology, AORN dei Colli-Monaldi Hospital, 80131 Naples, Italy; (R.G.); (F.V.); (G.P.)
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25
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Reddy SA, Khialani BV, Lambert B, Floré V, Brown AJ, Pettit SJ, West NE, Lewis C, Parameshwar J, Bhagra S, Kydd A, Hoole SP. Coronary imaging of cardiac allograft vasculopathy predicts current and future deterioration of left ventricular function in patients with orthotopic heart transplantation. Clin Transplant 2021; 36:e14523. [PMID: 34724254 DOI: 10.1111/ctr.14523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/19/2021] [Accepted: 10/18/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Intravascular ultrasound (IVUS) and optical coherence tomography (OCT) improve sensitivity of cardiac allograft vasculopathy (CAV) detection compared to invasive coronary angiography (ICA), but their ability to predict clinical events is unknown. We determined whether severe CAV detected with ICA, IVUS, or OCT correlates with graft function. METHODS Comparison of specific vessel parameters between IVUS and OCT on 20 patients attending for angiography 12-24 months post-orthotopic heart transplant. Serial left ventricular ejection fraction (EF) was recorded prospectively. RESULTS Analyzing 55 coronary arteries, OCT and IVUS correlated well for vessel CAV characteristics. A mean intimal thickness (MIT)OCT > .25 mm had a sensitivity of 86.7% and specificity of 74.3% at detecting Stanford grade 4 CAV. Those with angiographically evident CAV had significant reduction in graft EF over 7.3 years follow-up (median ΔEF -2% vs +1.5%, P = .03). Patients with MITOCT > .25 mm in at least one vessel had a lower median EF at time of surveillance (57% vs 62%, P = .014). Two MACEs were noted. CONCLUSION Imaging with OCT correlates well with IVUS for CAV detection. Combined angiography and OCT to screen for CAV within 12-24 months of transplant predicts concurrent and future deterioration in graft function.
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Affiliation(s)
- S Ashwin Reddy
- Department of Interventional Cardiology, Cambridge Biomedical Campus, Royal Papworth Hospital, Cambridge, UK
| | - Bharat V Khialani
- Department of Interventional Cardiology, Cambridge Biomedical Campus, Royal Papworth Hospital, Cambridge, UK
| | - Ben Lambert
- Department of Interventional Cardiology, Cambridge Biomedical Campus, Royal Papworth Hospital, Cambridge, UK
| | - Vintcent Floré
- Department of Interventional Cardiology, Cambridge Biomedical Campus, Royal Papworth Hospital, Cambridge, UK
| | - Adam J Brown
- Department of Interventional Cardiology, Cambridge Biomedical Campus, Royal Papworth Hospital, Cambridge, UK
| | - Steve J Pettit
- Transplant Unit, Cambridge Biomedical Campus, Royal Papworth Hospital, Cambridge, UK
| | - Nick Ej West
- Department of Interventional Cardiology, Cambridge Biomedical Campus, Royal Papworth Hospital, Cambridge, UK
| | - Clive Lewis
- Transplant Unit, Cambridge Biomedical Campus, Royal Papworth Hospital, Cambridge, UK
| | - Jayan Parameshwar
- Transplant Unit, Cambridge Biomedical Campus, Royal Papworth Hospital, Cambridge, UK
| | - Sai Bhagra
- Transplant Unit, Cambridge Biomedical Campus, Royal Papworth Hospital, Cambridge, UK
| | - Anna Kydd
- Transplant Unit, Cambridge Biomedical Campus, Royal Papworth Hospital, Cambridge, UK
| | - Stephen P Hoole
- Department of Interventional Cardiology, Cambridge Biomedical Campus, Royal Papworth Hospital, Cambridge, UK
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26
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Chih S, Chong AY, Bernick J, Wells GA, deKemp RA, Davies RA, Stadnick E, So DY, Overgaard C, Mielniczuk LM, Beanlands RSB. Validation of multiparametric rubidium-82 PET myocardial blood flow quantification for cardiac allograft vasculopathy surveillance. J Nucl Cardiol 2021; 28:2286-2298. [PMID: 31993956 DOI: 10.1007/s12350-020-02038-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 12/27/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND We previously demonstrated high diagnostic accuracy of Rubidium-82 positron emission tomography (PET) myocardial blood flow (MBF) quantification for CAV. The purpose of this study was to validate multiparametric PET detection of CAV by combined rate-pressure-product-corrected myocardial flow reserve (cMFR), stress MBF, and coronary vascular resistance (CVR) assessment. METHODS AND RESULTS Diagnostic CAV cut-offs of cMFR < 2.9, stress MBF < 2.3, CVR > 55 determined in a previous study (derivation) were assessed in heart transplant recipients referred for coronary angiography and intravascular ultrasound (IVUS) (validation). CAV was defined as International Society of Heart and Lung Transplantation CAV1-3 on angiography; and maximal intimal thickness ≥ 0.5 mm on IVUS. Eighty patients (derivation n = 40, validation n = 40) were included: 80% male, mean age 54±14 years, 4.5±5.6 years post transplant. The prevalence of CAV was 44% on angiography and 78% on IVUS. Combined PET cMFR < 2.9, stress MBF < 2.3, CVR > 55 CAV assessment yielded high 88% (specificity 75%) and 83% (specificity 40%) sensitivity for ≥ 1 abnormal parameter and high 88% (sensitivity 59%) and 90% (sensitivity 43%) specificity for 3 abnormal parameters, in the derivation and validation cohorts, respectively. CONCLUSION We validate the diagnostic accuracy of multiparametric PET flow quantification by cMFR, stress MBF, and CVR for CAV.
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Affiliation(s)
- Sharon Chih
- Division of Cardiology, Heart Failure and Transplantation, University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada.
| | - Aun Yeong Chong
- Division of Cardiology, Interventional Cardiology, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Jordan Bernick
- Division of Cardiology, Cardiovascular Research Methods Centre, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - George A Wells
- Division of Cardiology, Cardiovascular Research Methods Centre, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Robert A deKemp
- Division of Cardiology, Cardiovascular Research Methods Centre, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Ross A Davies
- Division of Cardiology, Heart Failure and Transplantation, University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
| | - Ellamae Stadnick
- Division of Cardiology, Heart Failure and Transplantation, University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
| | - Derek Y So
- Division of Cardiology, Interventional Cardiology, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Christopher Overgaard
- Division of Cardiology, Toronto General Hospital-University Health Network, Toronto, Canada
| | - Lisa M Mielniczuk
- Division of Cardiology, Heart Failure and Transplantation, University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
| | - Rob S B Beanlands
- Cardiac Imaging, Division of Cardiology, University of Ottawa Heart Institute, Ottawa, ON, Canada
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27
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CT-derived fractional flow reserve (FFRct) for functional coronary artery evaluation in the follow-up of patients after heart transplantation. Eur Radiol 2021; 32:1843-1852. [PMID: 34523009 PMCID: PMC8831350 DOI: 10.1007/s00330-021-08246-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/23/2021] [Accepted: 08/05/2021] [Indexed: 10/25/2022]
Abstract
OBJECTIVES Invasively measured fractional flow reserve (FFR) is associated with outcome in heart transplant (HTx) patients. Coronary computed tomography angiography (CCTA)-derived FFR (FFRct) provides additional functional information from anatomical CT images. We describe the first use of FFRct in HTx patients. METHODS HTx patients underwent CCTA with FFRct to screen for cardiac allograft vasculopathy. FFRct was measured distal to each coronary stenosis > 30% and FFRct ≤ 0.8 indicated hemodynamically significant stenosis. FFRct was also measured at the most distal location of each vessel. Overall distal FFRct was calculated as the mean of the distal values in the left, right, and circumflex coronary artery in each patient. RESULTS Seventy-three patients (age 56 (42-65) years, 63% males) at 11 (8-16) years after HTx were included. Eighteen (25%) patients had a focal hemodynamically significant stenosis (stenosis > 30% with FFRct ≤ 0.8). In the 55 patients without a hemodynamically significant focal FFRct stenosis (FFRct > 0.80), the distal left anterior descending artery FFRct was < 0.90 in 74% of the patients and 10 (18%) patients had ≥ 1 coronary artery with a distal FFRct ≤ 0.8, including 1 with a distal FFRct ≤ 0.8 in all coronaries. Overall distal FFRct in patients without focal stenosis was 0.88 (0.86-0.91), 0.87 (0.86-0.90), and 0.88 (0.86-0.91) (median with 25th-75th percentile) at 5-9, 10-14, or ≥ 15 years post-transplantation, respectively (p = 0.93). CONCLUSIONS FFRct performed on CCTA scans of HTx patients demonstrated that 25% of patients had a focal coronary stenosis with FFRct ≤ 0.8. Even without a focal stenosis, FFRct values are often abnormal in HTx patients. KEY POINTS • This is the first report describing the use of FFRct in in heart transplant patients. • FFRct identifies patients after heart transplantation with hemodynamically significant coronary stenosis. • Even without a focal stenosis, FFRct values are often abnormal in heart transplant patients.
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28
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Deng C, Jin Q, Wu Y, Li H, Yi L, Chen Y, Gao T, Wang W, Wang J, Lv Q, Yang Y, Xu J, Fu W, Zhang L, Xie M. Immunosuppressive effect of PLGA-FK506-NPs in treatment of acute cardiac rejection via topical subcutaneous injection. Drug Deliv 2021; 28:1759-1768. [PMID: 34463172 PMCID: PMC8409942 DOI: 10.1080/10717544.2021.1968978] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
FK506, a first-line immunosuppressant, is routinely administered orally and intravenously to inhibit activation and proliferation of T cells after heart transplantation (HT). Current administration route is not conducive enough to exert its efficacy in lymphatic system. Herein, we proposed that subcutaneous (SC) administration of FK506-loaded nanoparticles (PLGA-FK506-NPs) would be valuable for treating acute rejection after HT. The biodistribution and pharmacokinetic study revealed that it could effectively deliver FK506 to the lymph nodes (LNs) due to their suitable particle size, especially in inguinal LNs. Subsequently, the therapeutic efficacy of PLGA-FK506-NPs on the HT model was evaluated using intravenous (IV), intragastric (IG), or SC injection. Histopathological analysis revealed that 80% of allografts exhibited only grade 1R rejection with negligible lymphocyte infiltration in the SC group. The IV group exhibited 40% 1R rejection with mild lymphocyte infiltration and 20% grade 3R that require further intervention, and the IG group exhibited grades 40% 3R rejection with more lymphocyte infiltration. Moreover, the infiltration of T cells and the secretion of IL-2 and IFN-γ were significantly reduced in the SC group compared with the IG or IV group. The mean survival time (MST) further revealed that 50% of grafts treated with PLGA-FK506-NPs via SC injection survived longer than IG and IV groups. Moreover, the MST of single-dose SC injection of PLGA-FK506-NPs demonstrated that it would effectively reduce the required dose for a similar therapeutic effect. Overall, these results indicate that SC administration of PLGA-FK506-NPs is a more effective route for chronic FK506 treatment.
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Affiliation(s)
- Cheng Deng
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Qiaofeng Jin
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Ya Wu
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Huiling Li
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Luyang Yi
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Yihan Chen
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Tang Gao
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Wenyuan Wang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Jing Wang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Qing Lv
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Yali Yang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Jia Xu
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Wenpei Fu
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Li Zhang
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
| | - Mingxing Xie
- Department of Ultrasound Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Hubei Province Key Laboratory of Molecular Imaging, Wuhan, China
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29
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Sciaccaluga C, Ghionzoli N, Mandoli GE, Sisti N, D'Ascenzi F, Focardi M, Bernazzali S, Vergaro G, Emdin M, Valente S, Cameli M. The role of non-invasive imaging modalities in cardiac allograft vasculopathy: an updated focus on current evidences. Heart Fail Rev 2021; 27:1235-1246. [PMID: 34383194 PMCID: PMC9197817 DOI: 10.1007/s10741-021-10155-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/27/2021] [Indexed: 11/24/2022]
Abstract
Cardiac allograft vasculopathy (CAV) is an obliterative and diffuse form of vasculopathy affecting almost 50% of patients after 10 years from heart transplant and represents the most common cause of long-term cardiovascular mortality among heart transplant recipients. The gold standard diagnostic technique is still invasive coronary angiography, which however holds potential for complications, especially contrast-related kidney injury and procedure-related vascular lesions. Non-invasive and contrast-sparing imaging techniques have been advocated and investigated over the past decades, in order to identify those that could replace coronary angiography or at least reach comparable accuracy in CAV detection. In addition, they could help the clinician in defining optimal timing for invasive testing. This review attempts to examine the currently available non-invasive imaging techniques that may be used in the follow-up of heart transplant patients, spanning from echocardiography to nuclear imaging, cardiac magnetic resonance and cardiac computed tomography angiography, weighting their advantages and disadvantages.
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Affiliation(s)
- C Sciaccaluga
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy.
| | - N Ghionzoli
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - G E Mandoli
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - N Sisti
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - F D'Ascenzi
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - M Focardi
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - S Bernazzali
- Department of Cardiac Surgery, University Hospital of Siena, Siena, Italy
| | - G Vergaro
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy.,Division of Cardiology and Cardiovascular Medicine, Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | - M Emdin
- Institute of Life Sciences, Scuola Superiore Sant'Anna, Pisa, Italy.,Division of Cardiology and Cardiovascular Medicine, Fondazione Toscana Gabriele Monasterio, Pisa, Italy
| | - S Valente
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - M Cameli
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
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30
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Hu Y, Song B. Commentary on the Article by Kamilla P. Bjerre, MD, et al.: "Coronary Flow Velocity Reserve and Myocardial Deformation Predict Long-Term Outcome in Heart Transplant Recipients". J Am Soc Echocardiogr 2021; 35:136-137. [PMID: 34391885 DOI: 10.1016/j.echo.2021.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 12/01/2022]
Affiliation(s)
- Yan Hu
- The First Affiliated Hospital, Dalian Medical University, Dalian, Liaoning Province, People's Republic of China
| | - Baohui Song
- The Second Affiliated Hospital, Dalian Medical University, Dalian, Liaoning Province, People's Republic of China
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31
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Kerkhof PLM, Heyndrickx GR. Case report on the importance of longitudinal analysis of left ventricular end-systolic volume, rather than ejection fraction, in a heart transplant patient. EUROPEAN HEART JOURNAL-CASE REPORTS 2021; 5:ytab146. [PMID: 34084997 PMCID: PMC8164152 DOI: 10.1093/ehjcr/ytab146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/27/2020] [Accepted: 03/18/2021] [Indexed: 12/12/2022]
Abstract
Background Sequential determinations of left ventricular (LV) volume constitute a cornerstone in the mechanical performance evaluation of any heart transplant (HTX) patient. A comprehensive analysis of volumetric data offers unique insight into adaptation and pathophysiology. Case summary With a focus on eight sequential biplane angiocardiographic LV end-systolic volume (ESV) determinations, we evaluate the clinical course of a male patient following HTX (female donor) at the age of 61 years. This former smoker had a history of chronic obstructive pulmonary disease, hypertension, and hypercholesterolaemia refractory to treatment, and presented with multivessel coronary artery disease. The later course was complicated by pulmonary hypertension, an abdominal aortic aneurysm, and secondary chronic kidney disease. After an additional episode of pulmonary embolism, the patient died at the age of 79. At one point, the ESV was > 700% higher than the starting value, and actually by far exceeded the relative change of any other volume-based metric evaluated, including ejection fraction (EF). Discussion The longitudinal study of LV volumetric data in HTX patients offers a unique window to the pathophysiology of remodelling and sex-specific adaptation processes. The present case documents that proper analysis of serial findings form a rich source of clinically relevant information regarding disease progression. End-systolic volume is the primary indicator, in contrast to the popular metric EF. This finding is supported by population-based studies reported in the literature. We conclude that comprehensive analysis of volumetric data, particularly ESV, contributes to personalized medicine and enhances insight into LV (reverse) remodelling, while also informing about prognosis.
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Affiliation(s)
- Peter L M Kerkhof
- Department of Radiology & Nuclear Medicine, Amsterdam University Medical Centers, location VUmc, De Boelelaan 1118, 1081 HZ Amsterdam, Netherlands
| | - Guy R Heyndrickx
- Department of Cardiology, OLV Ziekenhuis, Moorselbaan 164, 9300 Aalst, Belgium
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32
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Novák J, Macháčková T, Krejčí J, Bienertová-Vašků J, Slabý O. MicroRNAs as theranostic markers in cardiac allograft transplantation: from murine models to clinical practice. Theranostics 2021; 11:6058-6073. [PMID: 33897899 PMCID: PMC8058726 DOI: 10.7150/thno.56327] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 03/21/2021] [Indexed: 12/11/2022] Open
Abstract
Congestive heart failure affects about 23 million people worldwide, and cardiac allograft transplantation remains one of the last options for patients with terminal refractory heart failure. Besides the infectious or oncological complications, the prognosis of patients after heart transplantation is affected by acute cellular or antibody-mediated rejection and allograft vasculopathy development. Current monitoring of both conditions requires the performance of invasive procedures (endomyocardial biopsy sampling and coronary angiography or optical coherence tomography, respectively) that are costly, time-demanding, and non-comfortable for the patient. Within this narrative review, we focus on the potential pathophysiological and clinical roles of microRNAs (miRNAs, miRs) in the field of cardiac allograft transplantation. Firstly, we provide a general introduction about the status of cardiac allograft function monitoring and the discovery of miRNAs as post-transcriptional regulators of gene expression and clinically relevant biomarkers found in the extracellular fluid. After this general introduction, information from animal and human studies are summarized to underline the importance of miRNAs both in the pathophysiology of the rejection process, the possibility of its modulation by altering miRNAs levels, and last but not least, about the use of miRNAs in the clinical practice to diagnose or predict the rejection occurrence.
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Affiliation(s)
- Jan Novák
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5-A18, 625 00, Brno, Czech Republic
- Second Department of Internal Medicine, St. Anne's University Hospital and Faculty of Medicine, Masaryk University, Pekařská 53, 65691, Brno, Czech Republic
- Central European Institute of Technology, Masaryk University, Kamenice 5-A35, 625 00, Brno, Czech Republic
| | - Táňa Macháčková
- Central European Institute of Technology, Masaryk University, Kamenice 5-A35, 625 00, Brno, Czech Republic
| | - Jan Krejčí
- Department of Cardiovascular Diseases, St. Anne's University Hospital and Faculty of Medicine, Masaryk University, Pekařská 53, 65691, Brno, Czech Republic
| | - Julie Bienertová-Vašků
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5-A18, 625 00, Brno, Czech Republic
- RECETOX, Faculty of Sciences, Masaryk University, Kamenice 5-A29, 625 00, Brno, Czech Republic
| | - Ondřej Slabý
- Central European Institute of Technology, Masaryk University, Kamenice 5-A35, 625 00, Brno, Czech Republic
- Department of Biology, Faculty of Medicine, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
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33
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Abstract
Heart transplantation (HTx) remains the optimal treatment for selected patients with end-stage advanced heart failure. However, survival is limited early by acute rejection and long term by cardiac allograft vasculopathy (CAV). Even though the diagnosis of rejection is based on histology, cardiac imaging provides a pivotal role for early detection and severity assessment of these hazards. The present review focuses on the use and reliability of different invasive and non-invasive imaging modalities to detect and monitor CAV and rejection after HTx. Coronary angiography remains the corner stone in routine CAV surveillance. However, angiograms are invasive and underestimates the CAV severity especially in the early phase. Intravascular ultrasound and optical coherence tomography are invasive methods for intracoronary imaging that detects early CAV lesions not evident by angiograms. Non-invasive imaging can be divided into myocardial perfusion imaging, anatomical/structural imaging and myocardial functional imaging. The different non-invasive imaging modalities all provide clinical and prognostic information and may have a gatekeeper role for invasive monitoring. Acute rejection and CAV are still significant clinical problems after HTx. No imaging modality provides complete information on graft function, coronary anatomy and myocardial perfusion. However, a combination of invasive and non-invasive modalities at different stages following HTx should be considered for optimal personalized surveillance and risk stratification.
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Affiliation(s)
| | | | - Hans Eiskjær
- Department of Cardiology, Aarhus University Hospital, Denmark
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34
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Sciaccaluga C, Mandoli GE, Sisti N, Natali MB, Ibrahim A, Menci D, D'Errico A, Donati G, Benfari G, Valente S, Bernazzali S, Maccherini M, Mondillo S, Cameli M, Focardi M. Detection of cardiac allograft vasculopathy by multi-layer left ventricular longitudinal strain in heart transplant recipients. Int J Cardiovasc Imaging 2021; 37:1621-1628. [PMID: 33442856 DOI: 10.1007/s10554-020-02147-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 12/24/2020] [Indexed: 11/30/2022]
Abstract
Cardiac allograft vasculopathy (CAV) is an obliterative and diffuse type of coronaropathy that develops in the transplanted human heart, representing a major cause of graft failure and mortality. Nowadays the gold standard for the diagnosis of CAV is coronary angiography (CA). Non-invasive CAV detection, especially in the early stages of the disease, is still challenging. Our study aimed to investigate the role of speckle tracking echocardiography (STE), in particular three-layer STE, in predicting CAV at early stages, and if other traditional echocardiographic, clinical or biochemical parameters could relate to CAV. The study population was composed of a total of 33 heart transplanted patients, divided accordingly to the presence or absence of CAV (12 CAV+ , 22 CAV-). All subjects underwent a complete transthoracic echocardiographic examination on the same day of the CA, and all conventional parameters of myocardial function were obtained, including strain values assessed by STE. Strain values were significantly reduced in presence of CAV, at each myocardial layer but in particular the endocardial-epicardial gradient (- 4.15 ± 1.6 vs - 1.7 ± 0.4% < .0001) that was also highly predictive of CAV (AUC at ROC curve 0.97). Among diastolic parameters, the E wave deceleration time (DT) and the mean E/e' ratio were strongly positively associated with CAV. In our population, left ventricular global longitudinal strain (GLS), layer-specific GLS and the endocardial-epicardial LS gradient, E wave DT and E/e' ratio were the best independent non-invasive predictors of CAV.
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Affiliation(s)
- C Sciaccaluga
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy.
| | - G E Mandoli
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - N Sisti
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - M B Natali
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - A Ibrahim
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - D Menci
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - A D'Errico
- Department of Internal Medicine, University of Siena, Siena, Italy
| | - G Donati
- Department of Internal Medicine, University of Siena, Siena, Italy
| | - G Benfari
- Division of Cardiology, Department of Medicine, University of Verona, Verona, Italy
| | - S Valente
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - S Bernazzali
- Department of Cardiac Surgery, University Hospital of Siena, Siena, Italy
| | - M Maccherini
- Department of Cardiac Surgery, University Hospital of Siena, Siena, Italy
| | - S Mondillo
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - M Cameli
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
| | - M Focardi
- Department of Medical Biotechnologies, Section of Cardiology, University of Siena, Siena, Italy
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35
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Orban M, Ulrich S, Dischl D, von Samson-Himmelstjerna P, Schramm R, Tippmann K, Hein-Rothweiler R, Strüven A, Lehner A, Braun D, Hausleiter J, Jakob A, Fischer M, Hagl C, Haas N, Massberg S, Mehilli J, Robert DP. Cardiac allograft vasculopathy: Differences of absolute and relative intimal hyperplasia in children versus adults in optical coherence tomography. Int J Cardiol 2020; 328:227-234. [PMID: 33316256 DOI: 10.1016/j.ijcard.2020.12.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 12/01/2020] [Accepted: 12/04/2020] [Indexed: 01/06/2023]
Abstract
BACKGROUND Intracoronary imaging enables an early detection of intimal changes. To what extend the development of absolute and relative intimal hyperplasia in intracoronary imaging differs depending on age and post-transplant time is not known. METHODS Aim of our retrospective study was to compare findings between 24 pediatric (cohort P) and 21 adult HTx patients (cohort A) using optical coherence tomography (OCT) at corresponding post-transplant intervals (≤5 years: P1 (n = 11) and A1 (n = 10); >5 and ≤ 10 years: P2 (n = 13) and A2 (n = 11),. Coronary intima thickness (IT), media thickness (MT) and intima to media ratio (I/M) were assessed per quadrant. Maximal IT >0.3 mm was considered absolute, I/M > 1 relative intimal hyperplasia. RESULTS Compared to A1, I/M was significantly higher in P1 (maximal I/M: P1: 5.41 [2.81-13.39] vs. A1: 2.30 [1.55-3.62], p = 0.005), whereas absolute IT values were comparable. In contrast, I/M was comparable between P2 and A2, but absolute IT were significantly higher in A2 (maximal IT: P2: 0.16 mm [0.11-0.25] vs. A2: 0.40 mm [0.30-0.71], p < 0.001). A2 presented with higher absolute IT (maximal: A1: 0.16 mm [0.12-0.44] vs. A2: 0.40 mm [0.30-0.71], p = 0.02) and I/M (maximal I/M A1: 2.30 [1.55-3.62] vs. A2: 3.79 [3.01-5.62], p = 0.04). CONCLUSION Our results suggest an age- and time-dependent difference in the prevalence of absolute and relative intimal hyperplasia in OCT, with an early peak in children and a progressive increase in adults.
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Affiliation(s)
- Madeleine Orban
- Department of Cardiology, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany; Partner Site Munich Heart Alliance, German Centre for Cardiovascular Research (DZHK), Germany.
| | - Sarah Ulrich
- Department of Pediatric Cardiology and Intensive Care Medicine, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany
| | - Dominic Dischl
- Department of Cardiology, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany
| | | | - René Schramm
- Department of Heart Surgery, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany
| | - Katharina Tippmann
- Department of Cardiology, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany
| | - Ralph Hein-Rothweiler
- Department of Cardiology, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany
| | - Anna Strüven
- Department of Cardiology, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany
| | - Anja Lehner
- Department of Pediatric Cardiology and Intensive Care Medicine, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany
| | - Daniel Braun
- Department of Cardiology, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany
| | - Jörg Hausleiter
- Department of Cardiology, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany; Partner Site Munich Heart Alliance, German Centre for Cardiovascular Research (DZHK), Germany
| | - Andre Jakob
- Department of Pediatric Cardiology and Intensive Care Medicine, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany
| | - Marcus Fischer
- Department of Pediatric Cardiology and Intensive Care Medicine, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany
| | - Christian Hagl
- Department of Heart Surgery, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany; Partner Site Munich Heart Alliance, German Centre for Cardiovascular Research (DZHK), Germany
| | - Nikolaus Haas
- Department of Pediatric Cardiology and Intensive Care Medicine, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany
| | - Steffen Massberg
- Department of Cardiology, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany; Partner Site Munich Heart Alliance, German Centre for Cardiovascular Research (DZHK), Germany
| | - Julinda Mehilli
- Department of Cardiology, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany; Partner Site Munich Heart Alliance, German Centre for Cardiovascular Research (DZHK), Germany
| | - Dalla Pozza Robert
- Department of Pediatric Cardiology and Intensive Care Medicine, Ludwig-Maximilians-University, Klinikum Großhadern, Munich, Germany
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36
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Lee SH, Shin D, Lee JM, Lefieux A, Molony D, Choi KH, Hwang D, Lee HJ, Jang HJ, Kim HK, Ha SJ, Kwak JJ, Park TK, Yang JH, Song YB, Hahn JY, Doh JH, Shin ES, Nam CW, Koo BK, Choi SH, Gwon HC. Automated Algorithm Using Pre-Intervention Fractional Flow Reserve Pullback Curve to Predict Post-Intervention Physiological Results. JACC Cardiovasc Interv 2020; 13:2670-2684. [DOI: 10.1016/j.jcin.2020.06.062] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 06/18/2020] [Accepted: 06/25/2020] [Indexed: 12/14/2022]
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37
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Abstract
Cardiac magnetic resonance (CMR) imaging is a unique imaging modality, which provides accurate noninvasive tissue characterization. Various CMR sequences can be utilized to identify and quantify patterns of myocardial edema, fibrosis, and infiltrates, which are important determinants for diagnosis and prognostication of heart failure. This article describes available methods of tissue characterization imaging applied in CMR. The presence and patterns of abnormal tissue characterization are related to common etiologies of heart failure and the techniques employed to demonstrate this. CMR provides the opportunity to identify the etiology of heart failure based on the recognition of different patterns of myocardial abnormalities.
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38
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Nelson LM, Rossing K, Ihlemann N, Boesgaard S, Engstrøm T, Gustafsson F. Intravascular ultrasound-guided selection for early noninvasive cardiac allograft vasculopathy screening in heart transplant recipients. Clin Transplant 2020; 34:e14124. [PMID: 33068292 DOI: 10.1111/ctr.14124] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/30/2020] [Accepted: 10/10/2020] [Indexed: 01/06/2023]
Abstract
BACKGROUND Noninvasive screening for cardiac allograft vasculopathy (CAV) instead of invasive coronary angiography (ICA) within the first 3 to 5 years after heart transplantation (HTx) is controversial. We evaluated a strategy of intravascular ultrasound (IVUS)-guided conversion to early noninvasive screening post-HTx. METHODS A single-center study of 103 consecutive HTx recipients from 2008 to 2018 undergoing ICA at 1 year post-HTx. Of 88 patients with normal 1-year ICA, sixty-six patients underwent IVUS examination for risk stratification by maximal intimal thickness (MIT) into (i) low-risk group (MIT < 0.5 mm) (n = 41, 62%) followed noninvasively versus (ii) high-risk group (MIT ≥ 0.5 mm) (n = 25, 38%) followed with yearly ICA. Both groups underwent ICA at year 5 post-HTx. We evaluated a combined endpoint of angiographic CAV and death at 5-year follow-up post-HTx. RESULTS Median (IQR) age was 51 (33-60) years, and 62% were male. Follow-up was 1443 (1125-1456) days. Survival free from angiographic CAV (Kaplan-Meier) differed significantly between groups (log-rank p < .0001). A subgroup of 27 patients completed ICA at year 5, and the proportion of angiographic CAV was significantly lower in low-risk patients (p < .0001). CONCLUSION IVUS-guided selection for early noninvasive CAV screening appears to be safe and holds promise as a novel strategy for early risk stratification and CAV surveillance post-HTx.
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Affiliation(s)
- Laerke Marie Nelson
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Kasper Rossing
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Nikolaj Ihlemann
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Søren Boesgaard
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Thomas Engstrøm
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Finn Gustafsson
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
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39
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Jackson AM, Glass C. Rejection in the setting of non-HLA antibody: New tools for navigating bench to bedside. Am J Transplant 2020; 20:2639-2641. [PMID: 32372531 DOI: 10.1111/ajt.15975] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
| | - Carolyn Glass
- Department of Pathology, Duke University, Durham, North Carolina, USA
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40
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Advances and New Insights in Post-Transplant Care: From Sequencing to Imaging. CURRENT TREATMENT OPTIONS IN CARDIOVASCULAR MEDICINE 2020. [DOI: 10.1007/s11936-020-00828-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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41
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Lee F, Nair V, Chih S. Cardiac allograft vasculopathy: Insights on pathogenesis and therapy. Clin Transplant 2020; 34:e13794. [PMID: 31991002 DOI: 10.1111/ctr.13794] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 01/14/2020] [Accepted: 01/23/2020] [Indexed: 12/21/2022]
Abstract
Cardiac allograft vasculopathy (CAV) is a unique accelerated form of coronary vascular disease affecting heart transplant recipients. This complication is a significant contributor to medium- to long-term post-transplant morbidity and mortality. There is a high prevalence of CAV with approximately one in three patients developing CAV by 5 years post-transplant. Morphologically, CAV is characterized by concentric coronary intimal hyperplasia in both the epicardial arteries and intramural microvasculature. Although several immune and non-immune factors have been identified, their precise pathogenic mechanisms, interactions, and relative importance in the development of CAV are not well defined. The advent of improved imaging surveillance modalities has resulted in earlier detection during the disease process. However, overall management of CAV remains challenging due to paucity of treatment. This review aims to discuss key concepts on the pathogenesis of CAV and current management strategies, focusing on the use of mammalian target of rapamycin inhibitors.
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Affiliation(s)
- Felicity Lee
- Heart Failure and Transplantation, Division of Cardiology, Department of Medicine, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Vidhya Nair
- Department of Pathology and Laboratory Medicine, The Ottawa Hospital, Ottawa, ON, Canada
| | - Sharon Chih
- Heart Failure and Transplantation, Division of Cardiology, Department of Medicine, University of Ottawa Heart Institute, Ottawa, ON, Canada
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42
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Deng C, Chen Y, Zhang L, Wu Y, Li H, Wu Y, Wang B, Sun Z, Li Y, Lv Q, Yang Y, Wang J, Jin Q, Xie M. Delivery of FK506-loaded PLGA nanoparticles prolongs cardiac allograft survival. Int J Pharm 2019; 575:118951. [PMID: 31843550 DOI: 10.1016/j.ijpharm.2019.118951] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 12/03/2019] [Accepted: 12/11/2019] [Indexed: 12/13/2022]
Abstract
In this study, FK506-loaded poly(lactide-co-glycolide) nanoparticles (PLGA-FK506-NPs) were developed using an O/W emulsion solvent evaporation method. The PLGA-FK506-NPs were observed to be monodispersed and spherical by transmission and scanning electron microscopy. The mean size and zeta potential measured by dynamic light scattering were 110 ± 1.3 nm and -20.56 ± 3.65 mV, respectively. The FK506 entrapment and loading efficiency were 94.46 ± 1.88% and 5.38 ± 0.24%, respectively. Moreover, a pharmacokinetics study revealed that the PLGA-FK506-NPs behaved significantly different than free FK506 by exhibiting a higher area under curve (1.69-fold), higher mean residence time (1.29-fold), slower clearance and longer elimination half-life. Notably, the concentrations of FK506 in the spleen and mesenteric lymph nodes of the PLGA-FK506-NP group were 3.1-fold and 2.9-fold higher than those of the free FK506 group. Furthermore, the immunosuppressive efficacy was evaluated in a rat heterotopic heart transplantation model, and the results showed that PLGA-FK506-NP treatment could successfully alleviate acute rejection and prolong allograft survival compared with the free FK506 treatment (mean survival time, 17.1 ± 2.0 versus 13.3 ± 1.7 days). In conclusion, PLGA-FK506-NPs are a promising formulation for spleen and lymph node delivery and have potential use in the treatment of cardiac allograft acute rejection.
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Affiliation(s)
- Cheng Deng
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China
| | - Yihan Chen
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China
| | - Li Zhang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China
| | - Ya Wu
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China
| | - Huiling Li
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China
| | - Yu Wu
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China
| | - Bin Wang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China
| | - Zhenxing Sun
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China
| | - Yuman Li
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China
| | - Qing Lv
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China
| | - Yali Yang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China
| | - Jing Wang
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China
| | - Qiaofeng Jin
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China.
| | - Mingxing Xie
- Department of Ultrasound, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Hubei Province Key Laboratory of Molecular Imaging, China.
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43
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Lee SH, Choi KH, Lee JM, Hwang D, Rhee TM, Park J, Kim HK, Cho YK, Yoon HJ, Park J, Song YB, Hahn JY, Doh JH, Nam CW, Shin ES, Hur SH, Koo BK. Physiologic Characteristics and Clinical Outcomes of Patients With Discordance Between FFR and iFR. JACC Cardiovasc Interv 2019; 12:2018-2031. [PMID: 31563683 DOI: 10.1016/j.jcin.2019.06.044] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/12/2019] [Accepted: 06/18/2019] [Indexed: 01/10/2023]
Abstract
OBJECTIVES This study evaluated the physiologic characteristics of discordant lesions between instantaneous wave-free ratio (iFR) and fractional flow reserve (FFR) and the prognosis at 5 years. BACKGROUND FFR or iFR have been standard methods for assessing the functional significance of coronary artery stenosis. However, limited data exist about the physiologic characteristics of discordant lesions and the prognostic implications resulting from these lesions. METHODS A total of 840 vessels from 596 patients were classified according to iFR and FFR; high iFR-high FFR (n = 580), low iFR-high FFR (n = 40), high iFR-low FFR (n = 69), and low iFR-low FFR (n = 128) groups, which were compared with a control group (n = 23). The differences in coronary circulatory indices including the coronary flow reserve (CFR), index of microcirculatory resistance (IMR), and resistance reserve ratio (RRR) (resting distal arterial pressure × mean transit time / hyperemic distal arterial pressure × hyperemic mean transit time), which reflect the vasodilatory capacity of coronary microcirculation, were compared. Patient-oriented composite outcomes (POCO) at 5 years including all-cause death, any myocardial infarction, and any revascularization were compared among patients with deferred lesions. RESULTS In the low iFR-high FFR group, CFR, RRR, and IMR measurements were similar to the low iFR-low FFR group: CFR 2.71 versus 2.43 (p = 0.144), RRR 3.36 versus 3.68 (p = 0.241), and IMR 18.51 versus 17.38 (p = 0.476). In the high iFR-low FFR group, the CFR, RRR, and IMR measurements were similar to the control group: CFR 2.95 versus 3.29 (p = 0.160), RRR 4.28 versus 4.00 (p = 0.414), and IMR 17.44 versus 17.06 (p = 0.818). Among the 4 groups, classified by iFR and FFR, CFR and RRR were all significantly different, except for IMR. However, there were no significant differences in the rates of POCO, regardless of discordance between the iFR and FFR. Only the low iFR-low FFR group had a higher POCO rate compared with the high iFR-high FFR group (adjusted hazard ratio: 2.46; 95% confidence interval: 1.17 to 5.16; p = 0.018). CONCLUSIONS Differences in coronary circulatory function were found, especially in the vasodilatory capacity between the low iFR-high FFR and high iFR-low FFR groups. FFR-iFR discordance was not related to an increased risk of POCO among patients with deferred lesions at 5 years. (Clinical, Physiological and Prognostic Implication of Microvascular Status;NCT02186093; Physiologic Assessment of Microvascular Function in Heart Transplant Patients; NCT02798731).
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Affiliation(s)
- Seung Hun Lee
- Division of Cardiology, Department of Internal Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ki Hong Choi
- Division of Cardiology, Department of Internal Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Joo Myung Lee
- Division of Cardiology, Department of Internal Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Doyeon Hwang
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Tae-Min Rhee
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Jonghanne Park
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea; Department of Internal Medicine, Naju National Hospital, Ministry of Health and Welfare, Naju, Korea
| | - Hyun Kuk Kim
- Department of Internal Medicine and Cardiovascular Center, Chosun University Hospital, University of Chosun College of Medicine, Gwangju, Korea
| | - Yun-Kyeong Cho
- Department of Medicine, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Hyuck-Jun Yoon
- Department of Medicine, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Jinhyoung Park
- Department of Biomedical Engineering, Sungkyunkwan University, Suwon, Korea
| | - Young Bin Song
- Division of Cardiology, Department of Internal Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Joo-Yong Hahn
- Division of Cardiology, Department of Internal Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Joon-Hyung Doh
- Department of Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea
| | - Chang-Wook Nam
- Department of Medicine, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Eun-Seok Shin
- Division of Cardiology, Ulsan Hospital, Ulsan, Korea; Department of Cardiology, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Seung-Ho Hur
- Department of Medicine, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Bon-Kwon Koo
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea; Institute on Aging, Seoul National University, Seoul, Korea
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