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Carlestål E, Franco-Cereceda A, Olsson C. Aortic events and relative survival in patients with moderately dilated proximal thoracic aorta. SCAND CARDIOVASC J 2024; 58:2330345. [PMID: 38533578 DOI: 10.1080/14017431.2024.2330345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 03/09/2024] [Indexed: 03/28/2024]
Abstract
Objectives. This study describes growth, local and remote aortic events, and survival in patients with proximal (root, ascending) aortic diameters just below threshold for operation. Methods. Patients with proximal aortic diameter of 4.5 to 5.4 cm at baseline, were followed with serial computed tomography studies and data collected retrospectively. Aortic growth rate was estimated using mixed effects modelling. Clinical and radiological features associated with outcomes (all-cause death, aortic death, local or remote aortic events (dissection, rupture, intramural hematoma, or intervention)) were assessed with Cox analysis. Survival and freedom from events were estimated using Kaplan-Meier methods. Results. 80 patients underwent 274 CT scans during 265 patient-years. Median proximal aortic growth was 0.2 cm in 3 years. 32 events occurred in 28 patients (35%). Eleven events were local, all elective proximal aortic surgery. Nine events were remote: 5 type B aortic dissections, 3 descending aneurysms undergoing elective repair, and one infrarenal aortic rupture. Twelve patients died, half of type B aortic dissection. Relative survival compared to a matched normal population was 82% (95% confidence limits 55-98%) at 10 years. In Cox analysis, increased descending aortic diameter was an independent predictor of all-cause death (hazard ratio [HR], 1.39) and aortic death (HR 1.96). Conclusions. Descending, but not proximal, aortic growth was predictive of lethal events. The decreased relative survival, the substantial number of remote aortic events and aortic deaths strongly suggest continuous serial CT surveillance of the entire aorta. Other indicators than proximal aortic diameter appear needed to improve management of this patient group.
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Affiliation(s)
- Emelie Carlestål
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Cardiothoracic Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Anders Franco-Cereceda
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Cardiothoracic Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Christian Olsson
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Cardiothoracic Surgery, Karolinska University Hospital, Stockholm, Sweden
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Mazzolai L, Teixido-Tura G, Lanzi S, Boc V, Bossone E, Brodmann M, Bura-Rivière A, De Backer J, Deglise S, Della Corte A, Heiss C, Kałużna-Oleksy M, Kurpas D, McEniery CM, Mirault T, Pasquet AA, Pitcher A, Schaubroeck HAI, Schlager O, Sirnes PA, Sprynger MG, Stabile E, Steinbach F, Thielmann M, van Kimmenade RRJ, Venermo M, Rodriguez-Palomares JF. 2024 ESC Guidelines for the management of peripheral arterial and aortic diseases. Eur Heart J 2024:ehae179. [PMID: 39210722 DOI: 10.1093/eurheartj/ehae179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/04/2024] Open
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3
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Zamirpour S, Gulati A, Xuan Y, Leach JR, Saloner DA, Guccione JM, Boskovski MT, Ge L, Tseng EE. Temporal evolution of ascending aortic aneurysm wall stress predicts all-cause mortality. INTERDISCIPLINARY CARDIOVASCULAR AND THORACIC SURGERY 2024; 39:ivae116. [PMID: 38913870 PMCID: PMC11229433 DOI: 10.1093/icvts/ivae116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 05/29/2024] [Accepted: 06/18/2024] [Indexed: 06/26/2024]
Abstract
OBJECTIVES Diameter-based risk stratification for elective repair of ascending aortic aneurysm fails to prevent type A dissection in many patients. Aneurysm wall stresses may contribute to risk prediction; however, rates of wall stress change over time are poorly understood. Our objective was to examine aneurysm wall stress changes over 3-5 years and subsequent all-cause mortality. METHODS Male veterans with <5.5 cm ascending aortic aneurysms and computed tomography at baseline and 3- to 5-year follow-up underwent three-dimensional aneurysm model construction. Peak circumferential and longitudinal wall stresses at systole were calculated using finite element analysis. Temporal trends were assessed by mixed-effects modelling. Changes in aortic wall stresses, diameter and length over time were evaluated as predictors of subsequent 3-year all-cause mortality by Cox proportional hazards modelling. RESULTS Sixty-two male veterans were included in the study. Yearly changes in geometric and biomechanical measures were 0.12 mm/year (95% confidence interval, 0.04-0.20) for aortic diameter, 0.41 mm/year (0.12-0.71) for aortic length, 1.19 kPa/year -5.94 to 8.33) for peak circumferential stress, and 0.48 kPa/year (-3.89 to 4.84) for peak longitudinal stress. Yearly change in peak circumferential stress was significantly associated with hazard of death-hazard ratio for peak circumferential stress growth per 10 kPa/year, 1.27 (95% CI, 1.02-1.60; P = 0.037); hazard ratio for peak circumferential stress growth ≥ 32 kPa/year, 8.47 (95% CI, 2.42-30; P < 0.001). CONCLUSIONS In this population of nonsurgical aneurysm patients, large temporal changes in peak circumferential stress, but not aortic diameter or length, was associated with all-cause mortality. Biomechanical stress and stress changes over time may be beneficial as additional risk factors for elective surgery in small aneurysms.
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Affiliation(s)
- Siavash Zamirpour
- Department of Surgery, University of California San Francisco and San Francisco VA Healthcare System, San Francisco, CA, USA
| | - Arushi Gulati
- Department of Surgery, University of California San Francisco and San Francisco VA Healthcare System, San Francisco, CA, USA
| | - Yue Xuan
- Department of Surgery, University of California San Francisco and San Francisco VA Healthcare System, San Francisco, CA, USA
| | - Joseph R Leach
- Department of Radiology, University of California San Francisco and San Francisco VA Healthcare System, San Francisco, CA, USA
| | - David A Saloner
- Department of Radiology, University of California San Francisco and San Francisco VA Healthcare System, San Francisco, CA, USA
| | - Julius M Guccione
- Department of Surgery, University of California San Francisco and San Francisco VA Healthcare System, San Francisco, CA, USA
| | - Marko T Boskovski
- Department of Surgery, University of California San Francisco and San Francisco VA Healthcare System, San Francisco, CA, USA
| | - Liang Ge
- Department of Surgery, University of California San Francisco and San Francisco VA Healthcare System, San Francisco, CA, USA
| | - Elaine E Tseng
- Department of Surgery, University of California San Francisco and San Francisco VA Healthcare System, San Francisco, CA, USA
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Ganizada BH, J A Veltrop R, Akbulut AC, Koenen RR, Accord R, Lorusso R, Maessen JG, Reesink K, Bidar E, Schurgers LJ. Unveiling cellular and molecular aspects of ascending thoracic aortic aneurysms and dissections. Basic Res Cardiol 2024; 119:371-395. [PMID: 38700707 PMCID: PMC11143007 DOI: 10.1007/s00395-024-01053-1] [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: 02/05/2024] [Revised: 04/03/2024] [Accepted: 04/26/2024] [Indexed: 06/01/2024]
Abstract
Ascending thoracic aortic aneurysm (ATAA) remains a significant medical concern, with its asymptomatic nature posing diagnostic and monitoring challenges, thereby increasing the risk of aortic wall dissection and rupture. Current management of aortic repair relies on an aortic diameter threshold. However, this approach underestimates the complexity of aortic wall disease due to important knowledge gaps in understanding its underlying pathologic mechanisms.Since traditional risk factors cannot explain the initiation and progression of ATAA leading to dissection, local vascular factors such as extracellular matrix (ECM) and vascular smooth muscle cells (VSMCs) might harbor targets for early diagnosis and intervention. Derived from diverse embryonic lineages, VSMCs exhibit varied responses to genetic abnormalities that regulate their contractility. The transition of VSMCs into different phenotypes is an adaptive response to stress stimuli such as hemodynamic changes resulting from cardiovascular disease, aging, lifestyle, and genetic predisposition. Upon longer exposure to stress stimuli, VSMC phenotypic switching can instigate pathologic remodeling that contributes to the pathogenesis of ATAA.This review aims to illuminate the current understanding of cellular and molecular characteristics associated with ATAA and dissection, emphasizing the need for a more nuanced comprehension of the impaired ECM-VSMC network.
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MESH Headings
- Humans
- Aortic Aneurysm, Thoracic/pathology
- Aortic Aneurysm, Thoracic/genetics
- Aortic Aneurysm, Thoracic/metabolism
- Aortic Aneurysm, Thoracic/physiopathology
- Aortic Dissection/pathology
- Aortic Dissection/genetics
- Aortic Dissection/metabolism
- Animals
- Muscle, Smooth, Vascular/pathology
- Muscle, Smooth, Vascular/metabolism
- Myocytes, Smooth Muscle/pathology
- Myocytes, Smooth Muscle/metabolism
- Aorta, Thoracic/pathology
- Aorta, Thoracic/physiopathology
- Vascular Remodeling
- Extracellular Matrix/pathology
- Extracellular Matrix/metabolism
- Phenotype
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Affiliation(s)
- Berta H Ganizada
- Department of Cardiothoracic Surgery, Heart and Vascular Centre, Maastricht University Medical Centre, Maastricht, The Netherlands
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Universiteitssingel 50, 6229 ER, Maastricht, The Netherlands
- CARIM, Cardiovascular Research Institute Maastricht, 6200 MD, Maastricht, The Netherlands
| | - Rogier J A Veltrop
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Universiteitssingel 50, 6229 ER, Maastricht, The Netherlands
- CARIM, Cardiovascular Research Institute Maastricht, 6200 MD, Maastricht, The Netherlands
| | - Asim C Akbulut
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Universiteitssingel 50, 6229 ER, Maastricht, The Netherlands
- CARIM, Cardiovascular Research Institute Maastricht, 6200 MD, Maastricht, The Netherlands
| | - Rory R Koenen
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Universiteitssingel 50, 6229 ER, Maastricht, The Netherlands
- CARIM, Cardiovascular Research Institute Maastricht, 6200 MD, Maastricht, The Netherlands
| | - Ryan Accord
- Department of Cardiothoracic Surgery, Center for Congenital Heart Disease, University Medical Center Groningen, Groningen, The Netherlands
| | - Roberto Lorusso
- Department of Cardiothoracic Surgery, Heart and Vascular Centre, Maastricht University Medical Centre, Maastricht, The Netherlands
- CARIM, Cardiovascular Research Institute Maastricht, 6200 MD, Maastricht, The Netherlands
| | - Jos G Maessen
- Department of Cardiothoracic Surgery, Heart and Vascular Centre, Maastricht University Medical Centre, Maastricht, The Netherlands
- CARIM, Cardiovascular Research Institute Maastricht, 6200 MD, Maastricht, The Netherlands
| | - Koen Reesink
- Department of Biomedical Engineering, Heart and Vascular Centre, Maastricht University Medical Centre, Maastricht, The Netherlands
- CARIM, Cardiovascular Research Institute Maastricht, 6200 MD, Maastricht, The Netherlands
| | - Elham Bidar
- Department of Cardiothoracic Surgery, Heart and Vascular Centre, Maastricht University Medical Centre, Maastricht, The Netherlands
- CARIM, Cardiovascular Research Institute Maastricht, 6200 MD, Maastricht, The Netherlands
| | - Leon J Schurgers
- Department of Biochemistry, Cardiovascular Research Institute Maastricht, Maastricht University, Universiteitssingel 50, 6229 ER, Maastricht, The Netherlands.
- CARIM, Cardiovascular Research Institute Maastricht, 6200 MD, Maastricht, The Netherlands.
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Vianna E, Kramer B, Tarraf S, Gillespie C, Colbrunn R, Bellini C, Roselli EE. Aortic diameter is a poor predictor of aortic tissue failure metrics in patients with ascending aneurysms. J Thorac Cardiovasc Surg 2024; 167:2049-2059.e2. [PMID: 36528437 DOI: 10.1016/j.jtcvs.2022.10.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 09/19/2022] [Accepted: 10/13/2022] [Indexed: 11/09/2022]
Abstract
OBJECTIVES There is growing consensus that aortic diameter is a flawed predictor of aortic dissection risk. We hypothesized that aortic tissue metrics would be better predicted by clinical metrics other than aortic diameter. Our objectives were to (1) characterize circumferential aortic failure stress and stretch as a result of aortic size and patient demographics, and (2) identify the influence of bicuspid aortic valve on failure metrics. METHODS From February 2018 to January 2021, 136 aortic tissue samples were obtained from 86 adults undergoing elective ascending aorta repair. Uniaxial biomechanical testing to failure, defined as a full-thickness central tear, was performed to obtain tissue failure stress and failure stretch and compared with clinical data and preoperative computed tomography imaging. The relationships among aortic diameter, patient demographics, and failure metrics were assessed using random forest regression models. RESULTS Median failure stress was 1.46 (1.02-1.94) megapascals, and failure stretch was 1.36 (1.27-1.54). Regression models correlated moderately with failure stress (R2 = 0.557) and highly with failure stretch (R2 = 0.806). Failure stress decreased with increasing age, lower body mass index, thicker tissue, and tricuspid aortic valves, whereas failure stretch was most highly correlated with age. Aortic area-to-height index outperformed aortic diameter in all models. CONCLUSIONS Aneurysmal ascending aortic tissue failure metrics correlated with available clinical metrics. Greater tissue thickness, older age, and tricuspid aortic valve morphology outperformed aortic diameter, warranting further investigation into the role of a patient-specific multifactorial dissection risk assessment over aortic diameter as a sole marker of aortic tissue integrity.
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Affiliation(s)
- Emily Vianna
- Department of Thoracic and Cardiovascular Surgery, Aorta Center, Heart, Vascular & Thoracic Institute, Cleveland Clinic, Cleveland, Ohio
| | - Benjamin Kramer
- Department of Thoracic and Cardiovascular Surgery, Aorta Center, Heart, Vascular & Thoracic Institute, Cleveland Clinic, Cleveland, Ohio
| | - Samar Tarraf
- Department of Bioengineering, College of Engineering, Northeastern University, Boston, Mass
| | - Callan Gillespie
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Robb Colbrunn
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Chiara Bellini
- Department of Bioengineering, College of Engineering, Northeastern University, Boston, Mass
| | - Eric E Roselli
- Department of Thoracic and Cardiovascular Surgery, Aorta Center, Heart, Vascular & Thoracic Institute, Cleveland Clinic, Cleveland, Ohio; Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio.
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Roselli EE. Author Reply to Commentary: Don't miss the forest for the trees. J Thorac Cardiovasc Surg 2024; 167:2062. [PMID: 36610882 DOI: 10.1016/j.jtcvs.2022.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Affiliation(s)
- Eric E Roselli
- Department of Thoracic and Cardiovascular Surgery, Aorta Center, Heart Vascular and Thoracic Institute, Cleveland, Ohio; Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio.
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Kalogerakos PD, Zafar MA, Li Y, Ellauzi H, Mukherjee SK, Ziganshin BA, Rizzo JA, Elefteriades JA. Patient-specific ascending aortic intervention criteria. Eur J Cardiothorac Surg 2024; 65:ezae162. [PMID: 38632077 DOI: 10.1093/ejcts/ezae162] [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: 09/12/2023] [Revised: 03/26/2024] [Accepted: 04/16/2024] [Indexed: 04/19/2024] Open
Abstract
OBJECTIVES Ascending aortic aneurysms pose a different risk to each patient. We aim to provide personalized risk stratification for such patients based on sex, age, body surface area and aneurysm location (root versus ascending). METHODS Root and ascending diameters, and adverse aortic events (dissection, rupture, death) of ascending thoracic aortic aneurysm patients were analysed. Aortic diameter was placed in context vis-a-vis the normal distribution in the general population with similar sex, age and body surface area, by conversion to z scores. These were correlated of major adverse aortic events, producing risk curves with 'hinge points' of steep risk, constructed separately for the aortic root and mid-ascending aorta. RESULTS A total of 1162 patients were included. Risk curves unveiled generalized thresholds of z = 4 for the aortic root and z = 5 for the mid-ascending aorta. These correspond to individualized thresholds of less than the standard criterion of 5.5 cm in the vast majority of patients. Indicative results include a 75-year-old typical male with 2.1 m2 body surface area, who was found to be at increased risk of adverse events if root diameter exceeds 5.15 cm, or mid ascending exceeds 5.27 cm. An automated calculator is presented, which identifies patients at high risk of adverse events based on sex, age, height, weight, and root and ascending size. CONCLUSIONS This analysis exploits a large sample of aneurysmal patients, demographic features of the general population, pre-dissection diameter, discrimination of root and supracoronary segments, and statistical tools to extract thresholds of increased risk tailor-made for each patient.
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Affiliation(s)
- Paris D Kalogerakos
- Department of Surgery, Division of Cardiac Surgery, Aortic Institute at Yale-New Haven Hospital, Yale University School of Medicine, New Haven, CT, USA
| | - Mohammad A Zafar
- Department of Surgery, Division of Cardiac Surgery, Aortic Institute at Yale-New Haven Hospital, Yale University School of Medicine, New Haven, CT, USA
| | - Yupeng Li
- Department of Political Science and Economics, Rowan University, Glassboro, NJ, USA
| | - Hesham Ellauzi
- Department of Surgery, Division of Cardiac Surgery, Aortic Institute at Yale-New Haven Hospital, Yale University School of Medicine, New Haven, CT, USA
| | - Sandip K Mukherjee
- Department of Surgery, Division of Cardiac Surgery, Aortic Institute at Yale-New Haven Hospital, Yale University School of Medicine, New Haven, CT, USA
| | - Bulat A Ziganshin
- Department of Surgery, Division of Cardiac Surgery, Aortic Institute at Yale-New Haven Hospital, Yale University School of Medicine, New Haven, CT, USA
| | - John A Rizzo
- Department of Economics, Stony Brook University, Stony Brook, NY, USA
- Department of Preventive Medicine, Stony Brook University, Stony Brook, NY, USA
| | - John A Elefteriades
- Department of Surgery, Division of Cardiac Surgery, Aortic Institute at Yale-New Haven Hospital, Yale University School of Medicine, New Haven, CT, USA
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Lee H, Zhou Q, Zhang H, Jin M, Tang X, Li K, Tuoerxun T. Computed Tomography Scan of the Aorta to Predict Type B Aortic Dissection. Thorac Cardiovasc Surg 2024; 72:126-133. [PMID: 37137329 PMCID: PMC10914493 DOI: 10.1055/s-0043-57026] [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: 11/20/2022] [Accepted: 03/13/2023] [Indexed: 05/05/2023]
Abstract
BACKGROUND The purpose of this study is to find the high-risk morphological features in type B aortic dissection (TBAD) population and to establish an early detection model. METHODS From June 2018 to February 2022, 234 patients came to our hospital because of chest pain. After examination and definite diagnosis, we excluded people with previous cardiovascular surgery history, connective tissue disease, aortic arch variation, valve malformation, and traumatic dissection. Finally, we included 49 patients in the TBAD group and 57 in the control group. The imaging data were retrospectively analyzed by Endosize (Therevna 3.1.40) software. The aortic morphological parameters mainly include diameter, length, direct distance, and tortuosity index. Multivariable logistic regression models were performed and systolic blood pressure (SBP), aortic diameter at the left common carotid artery (D3), and length of ascending aorta (L1) were chosen to build a model. The predictive capacity of the models was evaluated through the receiver operating characteristic (ROC) curve analysis. RESULTS The diameters in the ascending aorta and aortic arch are larger in the TBAD group (33.9 ± 5.9 vs. 37.8 ± 4.9 mm, p < 0.001; 28.2 ± 3.9 vs. 31.7 ± 3.0 mm, p < 0.001). The ascending aorta was significantly longer in the TBAD group (80.3 ± 11.7 vs. 92.3 ± 10.6 mm, p < 0.001). Besides, the direct distance and tortuosity index of the ascending aorta in the TBAD group increased significantly (69.8 ± 9.0 vs. 78.7 ± 8.8 mm, p < 0.001; 1.15 ± 0.05 vs. 1.17 ± 0.06, p < 0.05). Multivariable models demonstrated that SBP, aortic diameter at the left common carotid artery (D3), and length of ascending aorta (L1) were independent predictors of TBAD occurrence. Based on the ROC analysis, area under the ROC curve of the risk prediction models was 0.831. CONCLUSION Morphological characteristic including diameter of total aorta, length of ascending aorta, direct distance of ascending aorta, and tortuosity index of ascending aorta are valuable geometric risk factors. Our model shows a good performance in predicting the incidence of TBAD.
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Affiliation(s)
- Han Lee
- Department of Cardiothoracic Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu, China
- Institute of Cardiothoracic Vascular Disease, Nanjing University, Nanjing, Jiangsu, China
| | - Qing Zhou
- Department of Cardiothoracic Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu, China
- Institute of Cardiothoracic Vascular Disease, Nanjing University, Nanjing, Jiangsu, China
| | - Haitao Zhang
- Department of Cardiothoracic Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Min Jin
- Department of Cardiothoracic Surgery, Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - XinLong Tang
- Department of Cardiothoracic Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Kai Li
- Department of Cardiothoracic Surgery, Nanjing Drum Tower Hospital, Nanjing, Jiangsu, China
| | - Tayierjiang Tuoerxun
- Department of Cardiothoracic Surgery, Nanjing University, Nanjing, Jiangsu, China
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Aranda-Michel E, Sultan I. Commentary: Can we crack the black box of machine learning for aortic aneurysms? J Thorac Cardiovasc Surg 2023; 166:1021-1022. [PMID: 35000686 DOI: 10.1016/j.jtcvs.2021.12.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 10/19/2022]
Affiliation(s)
- Edgar Aranda-Michel
- Division of Cardiac Surgery, Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, Pa
| | - Ibrahim Sultan
- Division of Cardiac Surgery, Department of Cardiothoracic Surgery, University of Pittsburgh, Pittsburgh, Pa; UPMC Center for Thoracic Aortic Disease, Heart and Vascular Institute, University of Pittsburgh Medical Center, Pittsburgh, Pa.
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Debeij GP, Parikh S, Delhaas T, Bidar E, Reesink KD. Evidence in Clinical Studies for the Role of Wall Thickness in Ascending Thoracic Aortic Aneurysms: A Scoping Review. Bioengineering (Basel) 2023; 10:882. [PMID: 37627767 PMCID: PMC10451294 DOI: 10.3390/bioengineering10080882] [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: 05/14/2023] [Revised: 07/17/2023] [Accepted: 07/20/2023] [Indexed: 08/27/2023] Open
Abstract
BACKGROUND Ascending thoracic aortic aneurysm is a chronic degenerative pathology characterized by dilatation of this segment of the aorta. Clinical guidelines use aortic diameter and growth rate as predictors of rupture and dissection. However, these guidelines neglect the effects of tissue remodeling, which may affect wall thickness. The present study aims to systematically review observational studies to examine to what extent wall thickness is considered and measured in clinical practice. METHODS Using PubMed and Web of Science, studies were identified with data on ascending aortic wall thickness, morphology, aortic diameter, and measurement techniques. RESULTS 15 included studies report several methods by which wall thickness is measured. No association was observed between wall thickness and aortic diameter across included studies. Wall thickness values appear not materially different between aneurysmatic aortas and non-aneurysmal aortas. CONCLUSIONS The effects on and consequences of wall thickness changes during ATAA formation are ill-defined. Wall thickness values for aneurysmatic aortas can be similar to aortas with normal diameters. Given the existing notion that wall thickness is a determinant of mechanical stress homeostasis, our review exposes a clear need for consistent as well as clinically applicable methods and studies to quantify wall thickness in ascending aortic aneurysm research.
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Affiliation(s)
- Gijs P. Debeij
- Department of Cardiothoracic Surgery, Heart & Vascular Centre, Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands
| | - Shaiv Parikh
- Department of Biomedical Engineering, CARIM School for Cardiovascular Diseases, Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Tammo Delhaas
- Department of Biomedical Engineering, CARIM School for Cardiovascular Diseases, Maastricht University, 6229 ER Maastricht, The Netherlands
| | - Elham Bidar
- Department of Cardiothoracic Surgery, Heart & Vascular Centre, Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands
| | - Koen D. Reesink
- Department of Biomedical Engineering, CARIM School for Cardiovascular Diseases, Maastricht University, 6229 ER Maastricht, The Netherlands
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11
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Xiao M, Wu J, Chen D, Wang C, Wu Y, Sun T, Chen J. Ascending Aortic Volume: A Feasible Indicator for Ascending Aortic Aneurysm Elective Surgery? Acta Biomater 2023:S1742-7061(23)00353-7. [PMID: 37356784 DOI: 10.1016/j.actbio.2023.06.026] [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: 03/01/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023]
Abstract
Diameter-based criterion have been widely adopted for preventive surgery of ascending thoracic aortic aneurysm (ATAA). However, recent and growing evidence has shown that diameter-based methods may not be sufficient for identifying patients who are at risk of an ATAA. In this study, fluid-structure interaction (FSI) analysis was performed on one-hundred ATAA geometries reconstructed from clinical data to examine the relationship between hemodynamic conditions, ascending aortic volume (AAV), ascending aortic curvature, and aortic ratios measured from the reconstructed 3D models. The simulated hemodynamic and biomechanical parameters were compared among different groups of ATAA geometries classified based on AAV. The ATAAs with enlarged AAV showed significantly compromised hemodynamic conditions and higher mechanical wall stress. The maximum oscillatory shear index (OSI), particle residence time (PRT) and wall stress (WS) were significantly higher in enlarged ATAAs compared with controls (0.498 [0.497, 0.499] vs 0.499 [0.498, 0.499], p = 0.002, 312.847 [207.445, 519.391] vs 996.047 [640.644, 1573.140], p < 0.001, 769.680 [668.745, 879.795] vs 1072.000 [873.060, 1280.000] kPa, p < 0.001, respectively). Values were reported as median with interquartile range (IQR). AAV was also found to be more strongly correlated with these parameters compared to maximum diameter. The correlation coefficient between AAV and average WS was as high as 0.92 (p < 0.004), suggesting that AAV might be a feasible risk identifier for ATAAs. STATEMENT OF SIGNIFICANCE: Ascending thoracic aortic aneurysm is associated with the risk of dissection or rupture, creating life-threatening conditions. Current surgical intervention guidelines are purely diameter based. Recently, many studies proposed to incorporate other morphological parameters into the current clinical guidelines to better prevent severe adverse aortic events like rupture or dissection. The purpose of this study is to gain a better understanding of the relationship between morphological parameters and hemodynamic parameters in ascending aortic aneurysms using fluid-solid-interaction analysis on patient-specific geometries. Our results suggest that ascending aortic volume may be a better indicator for surgical intervention as it shows a stronger association with pathogenic hemodynamic conditions.
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Affiliation(s)
- Meng Xiao
- Department of Cardiac Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan 2nd Road, Guangzhou, China, 510000.; Department of Electrical and Computer Engineering, University of Alberta, 116 St & 85 Ave, Edmonton, AB, Canada, T6G 2R3..
| | - Jinlin Wu
- Department of Cardiac Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan 2nd Road, Guangzhou, China, 510000..
| | - Duanduan Chen
- Department of Biomedical Engineering, Beijing Institute of Technology, No. 5, South Street, Zhongguancun, Beijing, China..
| | - Chenghu Wang
- Department of Cardiac Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan 2nd Road, Guangzhou, China, 510000..
| | - Yanfen Wu
- Department of Cardiac Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan 2nd Road, Guangzhou, China, 510000..
| | - Tucheng Sun
- Department of Cardiac Surgery, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, No. 106, Zhongshan 2nd Road, Guangzhou, China, 510000..
| | - Jie Chen
- Department of Electrical and Computer Engineering, University of Alberta, 116 St & 85 Ave, Edmonton, AB, Canada, T6G 2R3..
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12
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Vervoort D, Chia-Ying Chung J, Fremes SE. The Aortic Wall Conundrum: Predicting Thoracic Aortic Disease Behaviour. Can J Cardiol 2022; 38:1673-1675. [PMID: 35995283 DOI: 10.1016/j.cjca.2022.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/08/2022] [Accepted: 08/14/2022] [Indexed: 12/24/2022] Open
Affiliation(s)
- Dominique Vervoort
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada; Division of Cardiac Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Jennifer Chia-Ying Chung
- Division of Cardiac Surgery, University of Toronto, Toronto, Ontario, Canada; Division of Cardiovascular Surgery, Department of Surgery, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Stephen E Fremes
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada; Division of Cardiac Surgery, University of Toronto, Toronto, Ontario, Canada; Schulich Heart Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada.
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13
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Eliathamby D, Keshishi M, Ouzounian M, Forbes TL, Tan K, Simmons CA, Chung J. Ascending aortic geometry and its relationship to the biomechanical properties of aortic tissue. JTCVS OPEN 2022; 13:32-44. [PMID: 37063150 PMCID: PMC10091216 DOI: 10.1016/j.xjon.2022.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/30/2022] [Accepted: 08/15/2022] [Indexed: 11/11/2022]
Abstract
Objective The objective of this study was to evaluate the relationship between ascending aortic geometry and biomechanical properties. Methods Preoperative computed tomography scans from ascending aortic aneurysm patients were analyzed using a center line technique (n = 68). Aortic length was measured from annulus to innominate artery, and maximal diameter from this segment was recorded. Biaxial tensile testing of excised tissue was performed to derive biomechanical parameters energy loss (efficiency in performing the Windkessel function) and modulus of elasticity (stiffness). Delamination testing (simulation of dissection) was performed to derive delamination strength (strength between tissue layers). Results Aortic diameter weakly correlated with energy loss (r 2 = 0.10; P < .01), but not with modulus of elasticity (P = .13) or delamination strength (P = .36). Aortic length was not associated with energy loss (P = .87), modulus of elasticity (P = .13) or delamination strength (P = .90). Using current diameter guidelines, aortas >55 mm (n = 33) demonstrated higher energy loss than those <55 mm (n = 35; P = .05), but no difference in modulus of elasticity (P = .25) or delamination strength (P = .89). A length cutoff of 110 mm was proposed as an indication for repair. Aortas >110 mm (n = 37) did not exhibit a difference in energy loss (P = .40), modulus of elasticity (P = .69), or delamination strength (P = .68) compared with aortas <110 mm (n = 31). Aortas above diameter and length thresholds (n = 21) showed no difference in energy loss (P = .35), modulus of elasticity (P = .55), or delamination strength (P = .61) compared with smaller aortas (n = 47). Conclusions Aortic geometry poorly reflects the mechanical properties of aortic tissue. Weak association between energy loss and diameter supports intervention at larger diameters. Further research into markers that better capture aortic biomechanics is needed.
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14
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Schena S. Ascending Aortic Aneurysms: Is it Time for a Radical Change of the Current Surveillance and Treatment Guidelines? Eur J Cardiothorac Surg 2022; 62:6655728. [PMID: 35925008 DOI: 10.1093/ejcts/ezac406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 08/02/2022] [Indexed: 11/12/2022] Open
Affiliation(s)
- Stefano Schena
- Division of Cardiothoracic Surgery, Medical College of Wisconsin, 8701 Watertown Plank Rd, HUB-5 Fl, Milwaukee, WI, 53226, United States
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15
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Tijmes FS, Karur GR. Imaging of Heritable Thoracic Aortic Disease. Semin Roentgenol 2022; 57:364-379. [DOI: 10.1053/j.ro.2022.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 07/11/2022] [Accepted: 07/13/2022] [Indexed: 11/11/2022]
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16
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Salmasi MY, Sasidharan S, Frattolin J, Edgar L, Stock U, Athanasiou T, Moore Jr J. Regional variation in biomechanical properties of ascending thoracic aortic aneurysms. Eur J Cardiothorac Surg 2022; 62:6650693. [PMID: 35894942 PMCID: PMC9731372 DOI: 10.1093/ejcts/ezac392] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 06/30/2022] [Accepted: 07/22/2022] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES This study aims to characterize the material properties of ascending thoracic aortic aneurysmal tissue, using regional biomechanical assessment of both tensile and dissection propagation peel strength. METHODS Thirty-four aneurysm specimens (proximal thoracic aorta) were harvested en-bloc from patients undergoing surgery for aneurysm replacement. Specimens were processed into regional samples of similar shapes covering the whole aneurysm isosurface, according to a structured protocol, in both orientations (longitudinal and circumferential). Thickness mapping, uniaxial tensile and peel tests were conducted, enabling calculation of the following parameters: true stress/strain, tangential modulus, tensile strength, peeling force and dissection energy. Two constitutive material models were used (hyperelastic models of Delfino and Ogden) to fit the data. A circumferential strip of tissue was also obtained for computational histology [regional quantification of (i) elastin, (ii) collagen and (iii) smooth muscle cells]. RESULTS The aortic wall was thinner on the outer curve (2.21, standard deviation (SD) 0.4 mm vs inner curve 2.50, SD 0.12 mm). Advanced patient age and higher pulse wave velocity (externally measured) were predictors of increased aortic wall thickness. Tensile strength was higher in the circumferential versus longitudinal direction when analysed according to anatomical regions. Both peel force (35.5, 22 N/m) and dissection energy (88.5, 69 J/m2) were on average lowest at the outer curve of the aneurysm in the longitudinal orientation. Delfino and Ogden model constants varied throughout anatomical regions, with the outer curve being associated a higher ɑ constant (Delfino) and lower µ1 constant (Ogden) (P < 0.05) indicating increased stiffness. Histologically, collagen abundance was significantly related to circumferential and longitudinal strength (P= 0.010), whilst smooth muscle cell count had no relation with any mechanical property (P > 0.05). CONCLUSIONS Our results suggest that the outer aortic curve is more prone to dissection propagation and perhaps less prone to rupture than the inner aortic curve. This strengthens the notion of disease heterogeneity in ascending thoracic aortic aneurysms and has implications for the pathogenesis of aortic dissection.
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Affiliation(s)
- M Yousuf Salmasi
- Corresponding author. Imperial College London, 10th Floor, QEQM Building, St Mary’s Campus, South Wharf Road, London W2 1NY, UK. e-mail: (M.Y. Salmasi)
| | | | - Jennifer Frattolin
- Department of Bioengineering, Faculty of Engineering, Imperial College London, London, UK
| | - Lowell Edgar
- Department of Bioengineering, Faculty of Engineering, Imperial College London, London, UK
| | - Ulrich Stock
- Department of Cardiac Surgery and Transplantation, Royal Brompton and Harefield Foundation Trust, London, UK
| | - Thanos Athanasiou
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - James Moore Jr
- Department of Bioengineering, Faculty of Engineering, Imperial College London, London, UK
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17
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Gomez A, Wang Z, Xuan Y, Hope MD, Saloner DA, Guccione JM, Ge L, Tseng EE. Regional wall stress differences on tricuspid aortic valve-associated ascending aortic aneurysms. Interact Cardiovasc Thorac Surg 2022; 34:1115-1123. [PMID: 34718581 PMCID: PMC10634398 DOI: 10.1093/icvts/ivab269] [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: 02/15/2021] [Revised: 07/15/2021] [Accepted: 08/27/2021] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Ascending thoracic aortic aneurysms (aTAAs) carry a risk of acute type A dissection. Elective repair guidelines are based on diameter, but complications often occur below diameter threshold. Biomechanically, dissection can occur when wall stress exceeds wall strength. Aneurysm wall stresses may better capture dissection risk. Our aim was to investigate patient-specific aTAA wall stresses associated with a tricuspid aortic valve (TAV) by anatomic region. METHODS Patients with aneurysm diameter ≥4.0 cm underwent computed tomography angiography. Aneurysm geometries were reconstructed and loaded to systemic pressure while taking prestress into account. Finite element analyses were conducted to obtain wall stress distributions. The 99th percentile longitudinal and circumferential stresses were determined at systole. Wall stresses between regions were compared using one-way analysis of variance with post hoc Tukey HSD for pairwise comparisons. RESULTS Peak longitudinal wall stresses on aneurysms (n = 204) were 326 [standard deviation (SD): 61.7], 246 (SD: 63.4) and 195 (SD: 38.7) kPa in sinuses of Valsalva, sinotubular junction (STJ) and ascending aorta (AscAo), respectively, with significant differences between AscAo and both sinuses (P < 0.001) and STJ (P < 0.001). Peak circumferential wall stresses were 416 (SD: 85.1), 501 (SD: 119) and 340 (SD: 57.6) kPa for sinuses, STJ and AscAo, respectively, with significant differences between AscAo and both sinuses (P < 0.001) and STJ (P < 0.001). CONCLUSIONS Circumferential and longitudinal wall stresses were greater in the aortic root than AscAo on aneurysm patients with a TAV. Aneurysm wall stress magnitudes and distribution relative to respective regional wall strength could improve understanding of aortic regions at greater risk of dissection in a particular patient.
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Affiliation(s)
- Axel Gomez
- Division of Adult Cardiothoracic Surgery, Department of Surgery, University of California San Francisco and San Francisco VA Medical Center, San Francisco, CA, USA
| | - Zhongjie Wang
- Division of Adult Cardiothoracic Surgery, Department of Surgery, University of California San Francisco and San Francisco VA Medical Center, San Francisco, CA, USA
| | - Yue Xuan
- Division of Adult Cardiothoracic Surgery, Department of Surgery, University of California San Francisco and San Francisco VA Medical Center, San Francisco, CA, USA
| | - Michael D Hope
- Department of Radiology, University of California San Francisco and San Francisco VA Medical Center, San Francisco, CA, USA
| | - David A Saloner
- Department of Radiology, University of California San Francisco and San Francisco VA Medical Center, San Francisco, CA, USA
| | - Julius M Guccione
- Division of Adult Cardiothoracic Surgery, Department of Surgery, University of California San Francisco and San Francisco VA Medical Center, San Francisco, CA, USA
| | - Liang Ge
- Division of Adult Cardiothoracic Surgery, Department of Surgery, University of California San Francisco and San Francisco VA Medical Center, San Francisco, CA, USA
| | - Elaine E Tseng
- Division of Adult Cardiothoracic Surgery, Department of Surgery, University of California San Francisco and San Francisco VA Medical Center, San Francisco, CA, USA
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18
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Can We Better Differentiate Type A Dissections: Evaluating the Role of Aortic Ratios. Heart Lung Circ 2022; 31:1126-1133. [PMID: 35597706 DOI: 10.1016/j.hlc.2022.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/22/2022] [Accepted: 03/24/2022] [Indexed: 11/20/2022]
Abstract
OBJECTIVES Type A aortic dissection (ATAAD) is hypothesised as a progression of aneurysmal dilation, but 60% of patients in the International Registry of Acute Aortic Dissection (iRAD) registry had a maximum aortic diameter (MAD)<55 mm. We aim to demonstrate that size ratios and aortic wall stress, assessed using a simplified markers, are unique to aortic patients who have had adverse events (ATAAD) compared to those who have not (thoracic aortic aneurysm [TAA]). METHODS A retrospective cohort analysis of patients who underwent aortic intervention at Waikato Hospital, New Zealand between 2015-2020, comparing dissection (ATAAD) to TAA patients. MAD; ratio of MAD to standardised-points within the aorta; and MAD-to-height collected from computed tomography (CT)-scans of all patients was undertaken. Receiver operating characteristic (ROC)-analysis to determine cut-off point for each marker was undertaken together with multivariable logistic regression comparing both cohorts, cross-validated by propensity-score matched analysis. RESULTS Cohort of 215 patients, 78 (36.3%) ATAAD and 137 (63.7%) TAA; median age at intervention 63.3 years, 52 (24.2%) females, both cohorts matched for size. Using the entire cohort, the MAD: sinus of Valsalva (SoV) ratio>1.06 (cut-off value) had 4.5-times greater association with ATAAD (95%CI 1.46-13.8) and a 0.1-unit increased conferred 1.45-times greater association with ATAAD (95%CI 1.00-2.08). MAD>55 mm only seen in 33.3% of ATAAD (n=26/78), and not associated with ATAAD (OR 1.88, 95%CI 0.64-5.51). Compared to MAD, MAD:SoV ratio had greater sensitivity (33% vs 73%), lower number-needed-to-treat (17.9 vs 2.7) and superior discrimination (area under the curve [AUC] 0.54 vs 0.71). Findings were consistent with propensity score matched analysis. CONCLUSIONS MAD:SoV ratio significantly correlates with ATAAD (4.5 times), with superior sensitivity, discrimination, and attributable-risk-percentage compared to MAD alone.
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Jahangiri M, Mani K, Acharya M, Bilkhu R, Quinton P, Schroeder F, Morgan R, Edsell M. Early and long-term outcomes of conventional and valve-sparing aortic root replacement. Heart 2022; 108:1858-1863. [PMID: 35580978 DOI: 10.1136/heartjnl-2022-320870] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 04/19/2022] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVE To determine the early and long-term outcomes of conventional aortic root (ARR) and valve-sparing root replacement (VSRR) using a standard perioperative and operative approach. METHODS We present prospectively collected data of 609 consecutive patients undergoing elective and urgent aortic root surgery (470 ARR, 139 VSRR) between 2006 and 2020. Primary outcomes were operative mortality and incidence of postoperative complications. Secondary outcomes were long-term survival and requirement for reintervention. Median follow-up was 7.6 years (range 0.5-14.5). RESULTS 189 patients (31%) had bicuspid aortic valves and 17 (6.9%) underwent redo procedures. Median cross-clamp time was 88 (range 54-208) min with cardiopulmonary bypass of 108 (range 75-296) min. In-hospital mortality was 10 (1.6%), with transient ischaemic attacks/strokes occurring in 1.1%. In-hospital mortality for VSRR was 0.7%. 12 patients (2.0%) required a resternotomy for bleeding and 14 (2.3%) received haemofiltration. Intensive care unit and hospital stay were 1.7 and 7.0 days, respectively. During follow-up, redo surgery for native aortic valve replacement was required in 1.4% of the VSRR group. Overall survival was 95.1% at 3 years, 93.1% at 5 years, 91.2% at 7 years and 88.6% at 10 years. CONCLUSIONS ARR and VSRR can be performed with low mortality and morbidity as well as a low rate of reintervention during the period of long-term follow-up, if performed by an experienced team with a consistent perioperative approach. This series provides contemporary evidence to balance the risks of aortic aneurysms and their rupture at diameters of <5.5 cm against the risks and benefits of surgery.
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Affiliation(s)
| | - Krishna Mani
- Cardiac Surgery, St George's Hospital, London, UK
| | | | | | - Paul Quinton
- Cardiac Anaesthesia, St George's Hospital, London, UK
| | | | | | - Mark Edsell
- Cardiac Anaesthesia, St George's Hospital, London, UK
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20
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Ganapathi AM, Ranney DN, Peterson MD, Lindsay ME, Patel HJ, Pyeritz RE, Trimarchi S, Hutchison S, Harris KM, Greason KL, Ota T, Montgomery DG, Nienaber CA, Eagle KA, Isselbacher EM, Hughes GC. Location of Aortic Enlargement and Risk of Type A Dissection at Smaller Diameters. J Am Coll Cardiol 2022; 79:1890-1897. [PMID: 35550685 DOI: 10.1016/j.jacc.2022.02.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 02/16/2022] [Accepted: 02/28/2022] [Indexed: 12/17/2022]
Abstract
BACKGROUND Previous work has demonstrated that more than one-half of acute type A aortic dissections (ATADs) occur at a maximal aortic diameter (MAD) of <5.5 cm. However, no analysis has investigated whether ATAD risk at smaller MADs is more common with modest dilation of the aortic root (AR) or supracoronary ascending aorta (AA) in patients without genetically triggered aortopathy. OBJECTIVES This study sought to determine if the segment of modest aortic dilation affects risk of ATAD. METHODS Using the International Registry of Acute Aortic Dissection (IRAD) database from May 1996 to October 2016, we identified 667 ATAD patients with MAD <5.5 cm. Patients were stratified by location of the largest proximal aortic segment (AR or AA). Patients with known genetically triggered aortopathy were excluded. MADs at time of dissection were compared between AR and AA groups. Secondary outcomes included operation, postoperative outcomes, and long-term survival. RESULTS Of patients with ATAD at an MAD <5.5 cm, 79.5% (n = 530) were in the AA group and 20.5% (n = 137) in the AR group. Modestly dilated ARs (median MAD 4.6 cm [IQR: 4.1-5.0 cm]) dissected at a significantly smaller diameter than modestly dilated AAs (median MAD 4.8 cm [IQR: 4.4-5.1 cm]) (P < 0.01). AR patients were significantly younger than AA patients (58.5 ± 13.0 years vs 63.2 ± 13.3 years; P < 0.01) and more commonly male (78% vs 65%; P < 0.01). Postoperative and long-term outcomes did not differ between groups. CONCLUSIONS ATAD appears to occur at smaller diameters in patients with modest dilation in the AR vs the AA (4.6 vs 4.8 cm). These findings may have implications for future consensus guidelines regarding the management of patients with aortic disease.
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Affiliation(s)
- Asvin M Ganapathi
- Department of Surgery, Division of Cardiac Surgery, Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - David N Ranney
- Department of Surgery, Division of Cardiovascular and Thoracic Surgery, Duke University Medical Center, Durham, North Carolina, USA
| | - Mark D Peterson
- Division of Cardiac Surgery, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Mark E Lindsay
- Thoracic Aortic Center, Massachusetts General Hospital, Boson, Massachusetts, USA
| | - Himanshu J Patel
- Department of Cardiac Surgery, University of Michigan, Ann Arbor, Michigan, USA
| | - Reed E Pyeritz
- Departments of Medicine and Genetics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA
| | - Santi Trimarchi
- Department of Scienze Cliniche e di Comunita, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico-University of Milan, Milan, Italy
| | - Stuart Hutchison
- Departments of Cardiac Sciences, Medicine, and Radiology, University of Calgary Medical Centre, Calgary, Alberta, Canada
| | - Kevin M Harris
- Cardiovascular Division, Minneapolis Heart Institute, Minneapolis, Minnesota, USA
| | - Kevin L Greason
- Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Takeyoshi Ota
- Department of Surgery, University of Chicago Medical Center, Chicago, Illinois, USA
| | | | - Christoph A Nienaber
- Cardiology and Aortic Centre, The Royal Brompton & Harefield NHS Trust, London, United Kingdom
| | - Kim A Eagle
- Cardiovascular Center, University of Michigan, Ann Arbor, Michigan, USA
| | - Eric M Isselbacher
- Thoracic Aortic Center, Massachusetts General Hospital, Boson, Massachusetts, USA
| | - G Chad Hughes
- Department of Surgery, Division of Cardiovascular and Thoracic Surgery, Duke University Medical Center, Durham, North Carolina, USA.
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21
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Samanidis G, Kanakis M, Georgiou C, Perreas K. Association of dissected ascending aorta diameter with preoperative adverse events in patients with acute type A aortic dissection. World J Cardiol 2022; 14:231-238. [PMID: 35582464 PMCID: PMC9048272 DOI: 10.4330/wjc.v14.i4.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 02/02/2022] [Accepted: 04/04/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Acute type A aortic dissection (ATAAD) is a life-threatening disease associated with high morbidity and mortality.
AIM To evaluate the diameter of dissected ascending aorta in patients diagnosed with ATAAD and whether the aortic diameter is associated with preoperative adverse events.
METHODS A total of 108 patients diagnosed with ATAAD who underwent emergency operation under hypothermic circulatory arrest were enrolled in this study. Demographic characteristics and perioperative data were recorded. In all patients, preoperative chest and abdomen computed tomography (CT) scans were performed.
RESULTS Median age of the patients was 61.5 (52.5-70.5) years and median body mass index (BMI) was 28.2 (25.1-32.6) cm2. The number of female patients was 37 (25%). Median diameter of the ascending aorta was 5.0 (4.5-6) cm and 53.8% of the patients had an aortic diameter < 5.0 cm, while 32.3% of the patients had an aortic diameter of 4.5cm and 72.0% had an ascending aorta diameter < 5.5 cm. The diameter of the ascending aorta did not differ in patients with vs without preoperative adverse events: Preoperative neurological dysfunction (P = 0.53) and hemodynamic instability (P = 0.43). Median age of patients with preoperative hemodynamic instability was 65 (57.5-74) years, while it was 60 (51-68) years in patients without (P = 0.04)
CONCLUSION Although current guidelines suggest replacing the ascending aorta with a diameter > 5.5 cm, most of the patients with ATAAD had an aortic diameter of less than 5.5 cm. The diameter of the ascending aorta in patients diagnose with ATAAD is not associated with preoperative adverse events.
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Affiliation(s)
- George Samanidis
- Department of Adult Cardiac Surgery, Onassis Cardiac Surgery Center, Athens 17674, Greece
| | - Meletios Kanakis
- Department of Pediatric and Congenital Heart Surgery, Onassis Cardiac Surgery Center, Athens 17674, Greece
| | - Charalampos Georgiou
- Department of Adult Cardiac Surgery, Onassis Cardiac Surgery Center, Athens 17674, Greece
| | - Konstantinos Perreas
- Department of Adult Cardiac Surgery, Onassis Cardiac Surgery Center, Athens 17674, Greece
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22
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Einfluss der bikuspiden und trikuspiden Aortenklappe bei Typ-A-Aortendissektion. ZEITSCHRIFT FUR HERZ THORAX UND GEFASSCHIRURGIE 2021. [DOI: 10.1007/s00398-021-00468-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Burris NS, Bian Z, Dominic J, Zhong J, Houben IB, van Bakel TMJ, Patel HJ, Ross BD, Christensen GE, Hatt CR. Vascular Deformation Mapping for CT Surveillance of Thoracic Aortic Aneurysm Growth. Radiology 2021; 302:218-225. [PMID: 34665030 PMCID: PMC8717815 DOI: 10.1148/radiol.2021210658] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Background Aortic diameter measurements in patients with a thoracic aortic aneurysm (TAA) show wide variation. There is no technique to quantify aortic growth in a three-dimensional (3D) manner. Purpose To validate a CT-based technique for quantification of 3D growth based on deformable registration in patients with TAA. Materials and Methods Patients with ascending and descending TAA with two or more CT angiography studies between 2006 and 2020 were retrospectively identified. The 3D aortic growth was quantified using vascular deformation mapping (VDM), a technique that uses deformable registration to warp a mesh constructed from baseline aortic anatomy. Growth assessments between VDM and clinical CT diameter measurements were compared. Aortic growth was quantified as the ratio of change in surface area at each mesh element (area ratio). Manual segmentations were performed by independent raters to assess interrater reproducibility. Registration error was assessed using manually placed landmarks. Agreement between VDM and clinical diameter measurements was assessed using Pearson correlation and Cohen κ coefficients. Results A total of 38 patients (68 surveillance intervals) were evaluated (mean age, 69 years ± 9 [standard deviation]; 21 women), with TAA involving the ascending aorta (n = 26), descending aorta (n = 10), or both (n = 2). VDM was technically successful in 35 of 38 (92%) patients and 58 of 68 intervals (85%). Median registration error was 0.77 mm (interquartile range, 0.54-1.10 mm). Interrater agreement was high for aortic segmentation (Dice similarity coefficient = 0.97 ± 0.02) and VDM-derived area ratio (bias = 0.0, limits of agreement: -0.03 to 0.03). There was strong agreement (r = 0.85, P < .001) between peak area ratio values and diameter change. VDM detected growth in 14 of 58 (24%) intervals. VDM revealed growth outside the maximally dilated segment in six of 14 (36%) growth intervals, none of which were detected with diameter measurements. Conclusion Vascular deformation mapping provided reliable and comprehensive quantitative assessment of three-dimensional aortic growth and growth patterns in patients with thoracic aortic aneurysms undergoing CT surveillance. Published under a CC BY 4.0 license Online supplemental material is available for this article. See also the editorial by Wieben in this issue.
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Vessel structural stress mediates aortic media degeneration in bicuspid aortopathy: New insights based on patient-specific fluid-structure interaction analysis. J Biomech 2021; 129:110805. [PMID: 34678623 DOI: 10.1016/j.jbiomech.2021.110805] [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: 03/16/2021] [Revised: 10/06/2021] [Accepted: 10/06/2021] [Indexed: 11/22/2022]
Abstract
This study aimed to assess the relationship between local mechanical stimuli and regional aortic tissue degeneration using fluid-structure interaction (FSI) analysis in patients with bicuspid aortic valve (BAV) disease. Nine patients underwent ascending aortic replacement were recruited. Tissues were collected to evaluate the pathology features in four regions, greater curvature (GC-region), posterior (P-region), anterior (A-region), and lesser curvature (LC-region). FSI analysis was performed to quantify vessel structural stress (VSS) and flow-induced parameters, including wall shear stress (WSS), oscillatory shear index (OSI), and particle relative residence time (RRT). The correlation between these biomechanical metrics and tissue degeneration was analyzed. Elastin in the medial layer and media thickness were thinnest and the gap between fibers was biggest in the GC-region, followed by the P-region and A-region, while the elastin and media thickness were thickest and the gap smallest in the LC-region. The collagen deposition followed a pattern with the biggest in the GC-region and least in the LC-region. There is a strong negative correlation between mean or peak VSS and elastin thickness in the arterial wall in the GC-region (r = -0.917; p = 0.001 and r = -0.899; p = 0.001), A-region (r = -0.748; p = 0.020 and r = -0.700; p = 0.036) and P-region (r = -0.773; p = 0.014 and r = -0.769; p = 0.015), and between mean VSS and fiber distance in the A-region (r = -0.702, p = 0.035). Moreover, strong negative correlation between mean or peak VSS and media thickness was also observed. No correlation was found between WSS, OSI, and RRT and aortic tissue degeneration in these four regions. These findings indicate that increased VSS correlated with local elastin degradation and aortic media degeneration, implying that it could be a potential biomechanical parameter for a refined risk stratification for patients with BAV.
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Berger T, Kreibich M. Computational fluid dynamics: a promising diagnostic tool. Eur J Cardiothorac Surg 2021; 60:392. [PMID: 34008003 DOI: 10.1093/ejcts/ezab247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Tim Berger
- Department of Cardiovascular Surgery, University Heart Centre Freiburg, Freiburg, Germany.,University of Freiburg, Faculty of Medicine, Freiburg, Germany
| | - Maximilian Kreibich
- Department of Cardiovascular Surgery, University Heart Centre Freiburg, Freiburg, Germany.,University of Freiburg, Faculty of Medicine, Freiburg, Germany
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Carlestål E, Ezer MS, Franco-Cereceda A, Olsson C. Proximal aortic repair in asymptomatic patients. JTCVS OPEN 2021; 7:1-9. [PMID: 36003695 PMCID: PMC9390525 DOI: 10.1016/j.xjon.2021.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 05/03/2021] [Indexed: 12/02/2022]
Abstract
Objective Current guidelines for elective proximal aortic repair are applicable to elective first-time procedures in asymptomatic patients without other primary indications or connective tissue disorders and with specified aortic diameter or growth rate. The objective was to characterize the surgical outcomes in this narrowly defined patient-population. Methods Guideline-compliant patients were identified from a recent (2014-2019) single unit consecutive surgical cohort (n = 935) by excluding total arch replacements, redos, acute and symptomatic patients, and genetic syndromes. Remaining patients were included regardless of surgical procedure performed. Early (30-day or in-hospital) and 1-year mortality were primary outcome measures. Major complications (stroke, severe renal or respiratory insufficiency, postcardiotomy shock, deep sternal wound infection, permanent pacemaker, and re-exploration) up to 1 year postoperatively were secondary outcome measures. Results In the resulting study population (n = 262), median age was 63 (interquartile range, 52-71) years, and median surgical risk (European System for Cardiac Operative Risk Evaluation II) was 3.2% (2.0%-4.4%). Early mortality was 2 of 262 (0.76%) without additional deaths up to 1-year postoperatively. The occurrence of major complications was low: stroke, 2 (0.76%); renal insufficiency, 2 (0.76%); respiratory insufficiency, 1 (0.38%); postcardiotomy shock, 1 (0.38%); deep sternal wound infection, 0; permanent pacemaker, 3 (1.1%); and re-exploration, 20 (7.6%), all occurring in the immediate (30-day) postoperative period and without additional events up to 1 year postoperatively. Conclusions In this recent cohort including the target population referred to by and managed in accordance with current guidelines, mortality and major complications were exceptionally infrequent. Guidelines should adequately weigh risks of conservative management against current surgical outcomes.
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Rathore KS. Distal Aortic Remodeling after Type A Dissection Repair: An Ongoing Mirage. J Chest Surg 2021; 54:439-448. [PMID: 34376627 PMCID: PMC8646062 DOI: 10.5090/jcs.21.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/29/2021] [Accepted: 06/03/2021] [Indexed: 11/24/2022] Open
Abstract
Remodeling is a commonly encountered term in the field of cardiothoracic surgery that is often used to describe various pathophysiological changes in the dimension, structure, and function of various cardiac chambers, including the aorta. Stanford type A or DeBakey type 1 aortic dissection (TAAD) is a perplexing pathologic condition that can present surgical teams with the need to navigate a maze of complex decision-making. Ascending or hemi-arch replacement leaves behind a significant amount of distal diseased aortic tissue, which might have a persistent false lumen or primary or secondary intimal tears (or communications between lumina), which can lead to dilatation of the aortic arch. Unfavorable aortic remodeling is a major cause of distal aortic deterioration after the index surgery. Cardiac surgeons are aware of post-surgical cardiac chamber remodeling, but the concept of distal aortic remodeling is still idealized. The contemporary literature from established aortic centers supports aggressive management of the residual aortic pathology during the index surgery, and with continuing technical advancements, endovascular stenting options are readily available for patients with TAAD or for complicated type B aortic dissection cases. This review discusses the pathophysiology and treatment options for favorable distal aortic remodeling, as well as its impact on mid- to long-term outcomes following TAAD repair.
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Sokolis DP, Angouras DC. Failure properties of ascending thoracic aortic aneurysms with dysfunctional tricuspid aortic valves. Interact Cardiovasc Thorac Surg 2021; 33:949-958. [PMID: 34333633 DOI: 10.1093/icvts/ivab184] [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: 02/04/2021] [Revised: 04/28/2021] [Accepted: 06/03/2021] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES Ascending thoracic aortic aneurysms (ATAAs) often coexist with dysfunctional tricuspid aortic valves (TAVs). How valvular pathology relates to the aortic wall mechanical properties requires detailed examination. METHODS Intact-wall and layer-specific mechanical properties from 40 and 21 patients with TAV-ATAAs, respectively, were studied using uniaxial tensile testing, longitudinally and circumferentially. Failure stress (tensile strength), failure stretch (extensibility) and peak elastic modulus (stiffness) measurements, along with histological assays of thickness and elastin/collagen contents, were compared among patients with no valvular pathology (NVP), aortic stenosis (AS) or aortic insufficiency (AI). RESULTS Intact-wall stiffness longitudinally and medial strength and stiffness, in either direction, were significantly lower in AI patients than in AS and NVP patients. Intact-wall/medial thickness and extensibility in either direction were significantly lower in AS patients than in AI and NVP patients. In contrast, intact-wall/medial stiffness circumferentially was significantly higher in AS patients than in NVP patients, consistent with the significantly increased medial collagen in AS patients. Failure properties and medial thickness and elastin/collagen contents were significantly lower (more impaired) in females. The left lateral was the thickest quadrant in NVP patients, but the 4 quadrants were equally thick in AS and AI patients. There were significant differences in strength and stiffness among quadrants, which varied however in the 3 patient groups. CONCLUSIONS The aortic wall load-bearing capacity was impaired in patients with ATAA in the presence of TAV stenosis or insufficiency. These findings lend biomechanical support to the current guidelines suggesting lower thresholds for elective ascending aorta replacement in cases of aortic valve surgery.
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Affiliation(s)
- Dimitrios P Sokolis
- Laboratory of Biomechanics, Center of Clinical, Experimental Surgery, and Translational Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Dimitrios C Angouras
- Department of Cardiac Surgery, Attikon University Hospital, School of Medicine, National and Kapodistrian University of Athens, 12462 Athens, Greece
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Kalogerakos PD, Zafar MA, Li Y, Mukherjee SK, Ziganshin BA, Rizzo JA, Elefteriades JA. Root Dilatation Is More Malignant Than Ascending Aortic Dilation. J Am Heart Assoc 2021; 10:e020645. [PMID: 34238012 PMCID: PMC8483477 DOI: 10.1161/jaha.120.020645] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 05/19/2021] [Indexed: 01/16/2023]
Abstract
Background Data from the International Registry of Acute Aortic Dissection indicate that the guideline criterion of 5.5 cm for ascending aortic intervention misses many dissections occurring at smaller dimensions. Furthermore, studies of natural behavior have generally treated the aortic root and the ascending aorta as 1 unit despite embryological, anatomical, and functional differences. This study aims to disentangle the natural histories of the aforementioned aortic segments, allowing natural behavior to define specific intervention criteria for root and ascending segments of the aorta. Methods and Results Diameters of the aortic root and mid-ascending segment were measured separately. Long-term complications (dissection, rupture, and death) were analyzed retrospectively for 1162 patients with ascending thoracic aortic aneurysm. Cox regression analysis suggested that aortic root dilatation (P=0.017) is more significant in predicting adverse events than mid-ascending aortic dilatation (P=0.087). Short stature posed as a serious risk factor. The dedicated risk curves for the aortic root and the mid-ascending aorta revealed hinge points at 5.0 and 5.25 cm, respectively. Conclusions The natural histories of the aortic root and mid-ascending aorta are uniquely different. Dilation of the aortic root imparts a significant higher risk of adverse events. A diameter shift for intervention to 5.0 cm for the aortic root and to 5.25 cm for the mid-ascending aorta should be considered at expert centers.
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Affiliation(s)
- Paris D. Kalogerakos
- Aortic Institute at Yale‐New Haven HospitalYale University School of MedicineNew HavenCT
| | - Mohammad A. Zafar
- Aortic Institute at Yale‐New Haven HospitalYale University School of MedicineNew HavenCT
| | - Yupeng Li
- Department of Political Science and EconomicsRowan UniversityGlassboroNJ
| | - Sandip K. Mukherjee
- Aortic Institute at Yale‐New Haven HospitalYale University School of MedicineNew HavenCT
| | - Bulat A. Ziganshin
- Aortic Institute at Yale‐New Haven HospitalYale University School of MedicineNew HavenCT
| | - John A. Rizzo
- Department of Economics and Department of Preventive MedicineStony Brook UniversityStony BrookNY
| | - John A. Elefteriades
- Aortic Institute at Yale‐New Haven HospitalYale University School of MedicineNew HavenCT
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The role of the aortic area in type A aortic dissection. Biomed Signal Process Control 2021. [DOI: 10.1016/j.bspc.2021.102642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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31
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Elbadawi A, Elgendy IY, Jimenez E, Omer MA, Shahin HI, Ogunbayo GO, Paniagua D, Jneid H. Trends and Outcomes of Elective Thoracic Aortic Repair and Acute Thoracic Aortic Syndromes in the United States. Am J Med 2021; 134:902-909.e5. [PMID: 33631161 DOI: 10.1016/j.amjmed.2021.01.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 01/16/2023]
Abstract
BACKGROUND There is a paucity of data on the contemporary outcomes and trends of elective thoracic aortic aneurysm repair and aneurysm-associated acute aortic syndrome. METHODS We queried the National Inpatient Sample (NIS) database years 2012-2016 to identify hospitalizations for elective thoracic aortic aneurysm repair and aneurysm-associated acute aortic syndrome. The main study outcome was in-hospital mortality. RESULTS The analysis yielded 24,295 hospitalizations for elective thoracic aortic aneurysm repair and 8875 hospitalizations for aneurysm-associated acute aortic syndrome. The number of hospitalizations for elective aortic repair significantly increased from 4375 in 2012 to 5450 in 2016 (Ptrend = .01). The number of hospitalizations for acute aortic syndrome numerically increased from 1545 in 2012 to 2340 in 2016 (Ptrend = .10). Overall in-hospital mortality for elective aortic repair was 2.4% with no change over time. In-hospital mortality for acute aortic rupture was 39.4% and for acute aortic dissection was 6.2% with no change over time. Hospitalizations for elective aortic repair had lower incidence of complications compared with those for aneurysm-associated acute aortic syndrome, including cardiogenic shock, cardiac arrest, acute stroke, and shorter length of stay. Factors associated with higher mortality among admissions undergoing elective aortic repair included older age, heart failure, valvular disease, and chronic kidney disease. Older age, coagulopathy, and fluid/ electrolytes disorders were associated with increased mortality among those with acute aortic syndrome. CONCLUSION Contemporary elective thoracic aortic aneurysm repair is associated with lower in-hospital mortality and morbidity when compared with a clinical presentation for an aneurysm-associated acute aortic syndrome. This should be taken into account when deciding the timing of elective aortic aneurysm repair and balancing the risks and benefits.
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Affiliation(s)
- Ayman Elbadawi
- Department of Cardiovascular Medicine, University of Texas Medical Branch, Galveston
| | - Islam Y Elgendy
- Division of Cardiology, Weill Cornell Medicine-Qatar, Doha, Qatar
| | - Ernesto Jimenez
- Division of Cardiothoracic Surgery, Baylor School of Medicine, Houston, Tex
| | - Mohmed A Omer
- Division of Cardiovascular Medicine, Mayo Clinic, Rochester, Minn
| | - Hend I Shahin
- Department of Obstetrics and Gynecology, University of Texas Medical Branch, Galveston
| | | | - David Paniagua
- Division of Cardiology, Baylor School of Medicine, Houston, Tex
| | - Hani Jneid
- Division of Cardiology, Baylor School of Medicine, Houston, Tex.
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Berger T, Kreibich M, Mueller F, Rylski B, Kondov S, Schröfel H, Pingpoh C, Beyersdorf F, Siepe M, Czerny M. The frozen elephant trunk technique for aortic dissection is safe after previous aortic repair. Eur J Cardiothorac Surg 2021; 59:130-136. [PMID: 33038224 DOI: 10.1093/ejcts/ezaa288] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 05/27/2020] [Accepted: 06/27/2020] [Indexed: 01/16/2023] Open
Abstract
OBJECTIVES The goal of this study was to evaluate outcomes of aortic arch replacement using the frozen elephant trunk (FET) technique after previous proximal and/or distal open or endovascular thoracic aortic repair. METHODS Sixty-three patients [median age: 63 (55-74) years; 65% men] were operated on for acute or chronic aortic dissection after previous proximal and/or distal open or endovascular thoracic aortic repair. Intraoperative details, clinical outcome and follow-up results were evaluated. RESULTS The median time between the index and the FET procedure was 81 (40-113) months. Fifty-eight (92%) patients had already undergone proximal aortic surgery; supracoronary ascending aortic replacement was the most frequent index procedure [n = 25 (40%)]. Distal aortic interventions had been done in 8 (13%) patients including endovascular thoracic aortic repair in 6 patients (10%). In-hospital mortality was 3% (n = 2). Postoperative strokes occurred in 5 patients (8%); of those, 1 stroke was dissection-related (2%). Subsequent aortic reinterventions after the FET procedure had to be done in 33% (n = 21). CONCLUSIONS Outcomes of aortic arch replacement using the FET technique after previous proximal and/or distal open or endovascular thoracic aortic repair are associated with low mortality and morbidity. Still, postoperative stroke remains an issue. After the successful accomplishments, the approach serves as an ideal platform for the secondary surgical or endovascular downstream aortic procedures, which are frequently needed.
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Affiliation(s)
- Tim Berger
- Department of Cardiovascular Surgery, University Heart Centre Freiburg University, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Maximilian Kreibich
- Department of Cardiovascular Surgery, University Heart Centre Freiburg University, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Felix Mueller
- Department of Cardiovascular Surgery, University Heart Centre Freiburg University, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Bartosz Rylski
- Department of Cardiovascular Surgery, University Heart Centre Freiburg University, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Stoyan Kondov
- Department of Cardiovascular Surgery, University Heart Centre Freiburg University, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Holger Schröfel
- Department of Cardiovascular Surgery, University Heart Centre Freiburg University, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Clarence Pingpoh
- Department of Cardiovascular Surgery, University Heart Centre Freiburg University, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Friedhelm Beyersdorf
- Department of Cardiovascular Surgery, University Heart Centre Freiburg University, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Matthias Siepe
- Department of Cardiovascular Surgery, University Heart Centre Freiburg University, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Martin Czerny
- Department of Cardiovascular Surgery, University Heart Centre Freiburg University, Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Freiburg, Germany
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Gottardi R, Voetsch A, Krombholz-Reindl P, Winkler A, Steindl J, Dinges C, Kirnbauer M, Neuner M, Berger T, Seitelberger R. Comparison of the conventional frozen elephant trunk implantation technique with a modified implantation technique in zone 1. Eur J Cardiothorac Surg 2021; 57:669-675. [PMID: 31504378 DOI: 10.1093/ejcts/ezz234] [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: 04/07/2019] [Revised: 07/19/2019] [Accepted: 07/23/2019] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES The aim of the study was to compare the conventional frozen elephant trunk implantation technique with a modified implantation technique with an aortic anastomosis in zone 1 and extra-anatomic revascularization of the left subclavian artery during reperfusion. METHODS Between May 2014 and March 2018, 40 patients (26 male; mean age 60.2 ± 11.2 years) underwent complete aortic arch replacement with the Thoraflex Hybrid prosthesis™ (Vascutek, Inchinnan, Scotland) at our institution. Seventeen patients underwent conventional arch replacement (group 1) and 23 patients the modified procedure (group 2). Indication for arch replacement included all types of acute and chronic diseases. RESULTS Cardiopulmonary bypass time (213.1 ± 53.5 vs 243.8 ± 67.0 min, P = 0.13) and aortic cross-clamp time (114.4 ± 40.7 vs 117.3 ± 56.6 min, P = 0.86) did not differ significantly between group 1 and 2. There was a trend towards a shorter circulatory arrest time (50.72 ± 9.6 vs 44.7 ± 15.5 min; P = 0.20) in group 2. Perioperative mortality was 10% (5.9% vs 13%; P = 0.62). Stroke occurred in 10% (5.9% vs 13%; P = 0.62) of patients. Spinal cord injury occurred in 7.5% of patients (11.8% vs 4.3% P = 0.57). Due to the a proximal aortic anastomosis, there was a significantly shorter coverage of the descending aorta with the prosthesis ending at vertebral level Th7.5 (6.75-8) in group 1 versus Th6.0 (5.0-6.0) in group 2 (P-value = 0.004). CONCLUSIONS Implantation of the frozen elephant trunk prosthesis in zone 1 allows for a more proximal aortic anastomosis that could make the procedure more feasible especially in patients with difficult anatomies or in an acute setting.
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Affiliation(s)
- Roman Gottardi
- Department of Cardiovascular and Endovascular Surgery, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Andreas Voetsch
- Department of Cardiovascular and Endovascular Surgery, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Philip Krombholz-Reindl
- Department of Cardiovascular and Endovascular Surgery, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Andreas Winkler
- Department of Cardiovascular and Endovascular Surgery, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Johannes Steindl
- Department of Cardiovascular and Endovascular Surgery, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Christian Dinges
- Department of Cardiovascular and Endovascular Surgery, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Michael Kirnbauer
- Department of Anesthesia and Intensive Care, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Matthias Neuner
- Department of Anesthesia and Intensive Care, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Tim Berger
- Department of Cardiovascular Surgery, Faculty of Medicine, University Heart Centre Freiburg, Albert Ludwigs University Freiburg, Freiburg, Germany
| | - Rainald Seitelberger
- Department of Cardiovascular and Endovascular Surgery, Paracelsus Medical University Salzburg, Salzburg, Austria
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Tozzi P, Gunga Z, Niclauss L, Delay D, Roumy A, Pfister R, Colombier S, Patella F, Qanadli SD, Kirsch M. Type A aortic dissection in aneurysms having modelled pre-dissection maximum diameter below 45 mm: should we implement current guidelines to improve the survival benefit of prophylactic surgery? Eur J Cardiothorac Surg 2021; 59:473-478. [PMID: 33006606 PMCID: PMC7850065 DOI: 10.1093/ejcts/ezaa351] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 08/03/2020] [Accepted: 08/11/2020] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVES Current guidelines recommend prophylactic replacement of the ascending aorta at an aneurysmal diameter of >55 mm to prevent acute Type A aortic dissection (TAAD) in non-Marfan patients. Several publications have challenged this threshold, suggesting that surgery should be performed in smaller aneurysms to prevent this devastating disease. We reviewed our experience with measuring aortic size at the time of TAAD to validate the existing recommendation for prophylactic ascending aorta replacement. METHODS All patients who had been admitted for TAAD to our emergency department from 2014 to 2019 and underwent ascending aorta replacement were included. Marfan patients were excluded. The maximum diameter of the dissected aorta was measured preoperatively using CT scan. We estimated the aortic diameter at the time of dissection to be 7 mm smaller than the measured maximum diameter of the dissected aorta (modelled pre-dissection diameter). RESULTS Overall, 102 patients were included. Of these, 67 were male (65.6%) and 35 were female (34.4%), and the cohort’s mean age was 65 ± 12.1 years. In addition, 66% were treated for arterial hypertension. The mean maximum modelled pre-dissection diameter was 39.6 ± 4.8 mm: 39.1 ± 5.1 mm in men and 40.7 ± 2.8 mm in women (P = 0.1). The cumulative 30-day mortality rate was 19.6% (20/102). CONCLUSIONS TAAD occurred at a modelled aortic diameter below 45 mm in 87.7% of our patients. Therefore, the current aortic diameter threshold of 55 mm excludes ∼99% of patients with TAAD from prophylactic replacement of the ascending aorta. The maximum diameter of the ascending aorta warrants reappraisal and this parameter should be a distinct part of a personalized decision-making process that also takes into account age, gender and body surface area to establish the surgical indication for preventive aorta replacement aimed to improve the survival benefit of this procedure.
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Affiliation(s)
- Piergiorgio Tozzi
- Cardiac Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne University, Lausanne, Switzerland
| | - Ziyad Gunga
- Cardiac Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne University, Lausanne, Switzerland
| | - Lars Niclauss
- Cardiac Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne University, Lausanne, Switzerland
| | - Dominique Delay
- Cardiac Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne University, Lausanne, Switzerland
| | - Aurelian Roumy
- Cardiac Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne University, Lausanne, Switzerland
| | - Raymond Pfister
- Cardiac Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne University, Lausanne, Switzerland
| | - Sebastien Colombier
- Cardiac Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne University, Lausanne, Switzerland
| | | | - Salah Dine Qanadli
- Radiology Department, Centre Hospitalier Universitaire Vaudois, Lausanne University, Lausanne, Switzerland
| | - Matthias Kirsch
- Cardiac Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne University, Lausanne, Switzerland
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Jie C, Shiqi C, Bingxia Z, Junwei L. Correlations between aortic tortuosity, diameter and presence of acute type A aortic dissection. THE JOURNAL OF CARDIOVASCULAR SURGERY 2021; 62:632-638. [PMID: 34142523 DOI: 10.23736/s0021-9509.21.11657-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Currently, only patients with ascending aorta diameter exceeding 55mm will undergo prophylactic surgery. However, diameter alone is insufficient for precise risk stratification. An International Registry of Acute Aortic Dissections study showed that nearly 60% of patients with type A aortic dissection had a diameter<55mm. This study aims to compare the tortuosity of the ascending aorta between ATAAD patients and healthy controls and evaluate correlations between aortic tortuosity/diameter and presence of ATAAD. METHODS A total of 75 cases in the ATAAD group and 83 cases in the Control group were enrolled. Tortuosity was calculated as the ratio of the total curve length (Lc) of the centerline to the linear distance (d) between its two endpoints, as assessed by an electronic caliper. The measurements were made on all patients by just one cardiovascular radiologist using 3-dimensional computerized tomographic imaging. ROC analysis was used to reckon the best cut-off level that prognosis occurrence of ATAAD. Correlation analysis was used to evaluate the correlation between ATAAD and tortuosity.Logistic regression was used to evaluate the relation between ATAAD and tortuosity. The tortuosity of ascending aorta was compared with a healthy control group using propensity score. RESULTS According to the ROC analysis, the best cut-off level that prognosis occurrence of ATAAD was 0.135. In addition, the occurrence of ATAAD showed a strong correlation with maximum diameter of the ascending aorta (r 0.587, p < 0.001), and moderate correlation with ascending aortic Tortuosity (r 0.425, p<0.001). 96 patients were matched based on propensity scores (ATAAD n=48, controls n=48). The ascending aorta was more tortuous and more dilated in ATAAD patients compared with healthy controls (0.15±0.06 vs. 0.11±0.05, p<0.001, 37.96mm±7.31 vs. 31.67mm±2.78, p<0.001, respectively). CONCLUSIONS Our study found that the occurrence of ATAAD showed a strong correlation with maximum diameter of the ascending aorta, and moderate correlation with ascending aortic Tortuosity. Adding tortuosity to the ATAAD prediction system will improve the ability to identify high-risk groups of ATAAD. When the tortuosity is more significant than 0.135, prophylactic surgical intervention should be considered.
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Affiliation(s)
- Chen Jie
- Cardiovascular Surgery, Union Hospital, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Chen Shiqi
- Cardiovascular Surgery, Union Hospital, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Zhang Bingxia
- Cardiovascular Surgery, Union Hospital, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Liu Junwei
- Cardiovascular Surgery, Union Hospital, Huazhong University of Science and Technology, Wuhan, People's Republic of China -
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Eliathamby D, Gutierrez M, Liu A, Ouzounian M, Forbes TL, Tan KT, Chung J. Ascending Aortic Length and Its Association With Type A Aortic Dissection. J Am Heart Assoc 2021; 10:e020140. [PMID: 34121418 PMCID: PMC8403277 DOI: 10.1161/jaha.120.020140] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background The aim of this study was to determine the role of ascending aortic length and diameter in type A aortic dissection. Methods and Results Computed tomography scans from patients with acute type A dissections (n=51), patients with proximal thoracic aortic aneurysms (n=121), and controls with normal aortas (n=200) were analyzed from aortic annulus to the innominate artery using multiplanar reconstruction. In the control group, ascending aortic length correlated with diameter (r2=0.35, P<0.001), age (r2=0.17, P<0.001), and sex (P<0.001). As a result of immediate changes in aortic morphology at the time of acute dissection, predissection lengths and diameters were estimated based on models from published literature. Ascending aortic length was longer in patients immediately following acute dissection (median, 109.7 mm; interquartile range [IQR], 101.0–115.1 mm), patients in the estimated predissection group (median, 104.2 mm; IQR, 96.0–109.3 mm), and patients in the aneurysm group (median, 107.0 mm; IQR, 99.6–118.7 mm) in comparison to controls (median, 83.2 mm; IQR, 74.5–90.7 mm) (P<0.001 all comparisons). The diameter of the ascending aorta was largest in the aneurysm group (median, 52.0 mm; IQR, 45.9–58.0 mm), followed by the dissection group (median, 50.3 mm; IQR, 46.6–57.5 mm), and not significantly different between controls and the estimated predissection group (median, 33.4 mm [IQR, 30.7–36.7 mm] versus 35.2 mm [IQR, 32.6–40.3 mm], P=0.09). After adjustment for diameter, age, and sex, the estimated predissection aortic lengths were 16 mm longer than those in the controls and 12 mm longer than in patients with nondissected thoracic aneurysms. Conclusions The length of the ascending aorta, after adjustment for age, sex, and aortic diameter, may be useful in discriminating patients with type A dissection from normal controls and patients with nondissected thoracic aneurysms.
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Affiliation(s)
| | - Mariana Gutierrez
- Division of Cardiovascular Surgery University Health Network Toronto Canada
| | - Aileen Liu
- Division of Cardiovascular Surgery University Health Network Toronto Canada
| | - Maral Ouzounian
- Division of Cardiovascular Surgery University Health Network Toronto Canada
| | - Thomas L Forbes
- Division of Vascular Surgery University Health Network Toronto Canada
| | - Kong Teng Tan
- Division of Vascular/Interventional Radiology University Health Network Toronto Canada
| | - Jennifer Chung
- Division of Cardiovascular Surgery University Health Network Toronto Canada
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Papakonstantinou NA, Rorris FP. Elective replacement of the ascending aorta: is the 5.5-cm threshold appropriate? The insidious, small aorta. Eur J Cardiothorac Surg 2021; 59:554-561. [PMID: 33226084 DOI: 10.1093/ejcts/ezaa387] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 08/24/2020] [Accepted: 08/29/2020] [Indexed: 01/15/2023] Open
Abstract
OBJECTIVES As thoracic aortic aneurysm disease continues to cause significant morbidity and mortality in the general population, the cardiovascular community continues the search for the golden threshold of elective surgical replacement of the ascending aorta. METHODS Thoracic aortic aneurysm is a common disease, classified within the 20 most common causes of death in patients over 65 years old. Once aortic complications like dissection or rupture occur, they can prove fatal. Prophylactic surgical replacement of the ascending aorta remains the mainstay of treatment to prevent these complications. Current American and European guidelines agree that the threshold for the diameter for elective replacement of the ascending aorta in non-syndromic, asymptomatic aneurysmal disease is 5.5 cm. Overall, aortic dissection is related to poor prognosis, thus making early intervention paramount. RESULTS There is a critical size above which the risk of dissection or rupture becomes extremely high. However, a significant post-dissection increase in diameter is reported, thus rendering the predissection aortic diameter well below the current threshold for elective surgical replacement of the ascending aorta. Moreover, it is widely reported that the majority of acute aortic dissections would not meet the criteria for prophylactic surgery prior to dissection. Additionally, elective surgical ascending aortic replacement in the current era shows a significantly improved risk-benefit ratio, which justifies a more aggressive approach in the management of aortic aneurysmal disease. CONCLUSIONS As a result, there is a lot of discussion in the literature about the requirement of a leftward shifting of the surgical threshold for elective aortic replacement.
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Affiliation(s)
| | - Filippos-Paschalis Rorris
- Cardiovascular and Thoracic Surgery Department, General Hospital of Athens "Evangelismos", Athens, Greece
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38
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Qiu P, Li Y, Liu K, Qin J, Ye K, Chen T, Lu X. Prescreening and treatment of aortic dissection through an analysis of infinite-dimension data. BioData Min 2021; 14:24. [PMID: 33794946 PMCID: PMC8015064 DOI: 10.1186/s13040-021-00249-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 02/14/2021] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Aortic dissection (AD) is one of the most catastrophic aortic diseases associated with a high mortality rate. In contrast to the advances in most cardiovascular diseases, both the incidence and in-hospital mortality rate of AD have experienced deviant increases over the past 20 years, highlighting the need for fresh prospects on the prescreening and in-hospital treatment strategies. METHODS Through two cross-sectional studies, we adopt image recognition techniques to identify pre-disease aortic morphology for prior diagnoses; assuming that AD has occurred, we employ functional data analysis to determine the optimal timing for BP and HR interventions to offer the highest possible survival rate. RESULTS Compared with the healthy control group, the aortic centerline is significantly more slumped for the AD group. Further, controlling patients' blood pressure and heart rate according to the likelihood of adverse events can offer the highest possible survival probability. CONCLUSIONS The degree of slumpness is introduced to depict aortic morphological changes comprehensively. The morphology-based prediction model is associated with an improvement in the predictive accuracy of the prescreening of AD. The dynamic model reveals that blood pressure and heart rate variations have a strong predictive power for adverse events, confirming this model's ability to improve AD management.
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Affiliation(s)
- Peng Qiu
- Department of Vascular Surgery, Shanghai Ninth People’s Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Big Data Research Lab, University of Waterloo, Waterloo, Canada
| | - Yixuan Li
- Big Data Research Lab, University of Waterloo, Waterloo, Canada
- Department of Economics, University of Waterloo, Waterloo, Canada
- Stoppingtime (Shanghai) BigData & Technology Co. Ltd., Shanghai, China
| | - Kai Liu
- Big Data Research Lab, University of Waterloo, Waterloo, Canada
- School of Mathematical and Computational Sciences, University of Prince Edward Island, Charlottetown, Canada
| | - Jinbao Qin
- Department of Vascular Surgery, Shanghai Ninth People’s Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kaichuang Ye
- Department of Vascular Surgery, Shanghai Ninth People’s Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tao Chen
- Big Data Research Lab, University of Waterloo, Waterloo, Canada
- Department of Economics, University of Waterloo, Waterloo, Canada
- Senior Research Fellow of Labor and Worklife Program, Harvard University, Cambridge, USA
| | - Xinwu Lu
- Department of Vascular Surgery, Shanghai Ninth People’s Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Rylski B, Schofer F, Beyersdorf F, Kondov S, Kreibich M, Schlett CL, Czerny M. Aortic Arch Anatomy in Candidates for Aortic Arch Repair. Semin Thorac Cardiovasc Surg 2021; 34:19-26. [PMID: 33713827 DOI: 10.1053/j.semtcvs.2021.03.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 03/03/2021] [Indexed: 11/11/2022]
Abstract
Detailed knowledge of aortic anatomy is necessary before new prostheses can be developed. Our aim was to provide a thorough analysis of aortic arch anatomy in patients who are potential candidates for arch repair. Patients' charts were screened between 2001 and 2019 for all those with a dissection or aneurysm involving aortic arch. Aortic diameters, segmental lengths, aortic arch type, tortuosity, diameters and length of supraaortic vessels were analyzed via computed tomography angiography. We included 558 patients who underwent thoracic aortic treatment for type A, B, non-A non-B dissection, or aortic arch aneurysm. Incidence of all three arch types was similar in patients with type A dissection. In type B dissection and arch aneurysm patients, arch type III was most commonly observed (47% and 52%, respectively). The left vertebral artery offspring from aortic arch was observed in 6.6%. The mid-ascending aorta and aortic arch were not dilated in type B and non-A non-B dissection patients. The innominate, left common carotid and left subclavian arteries median diameters were 16 (14; 18), 8 (7; 9) and 11 (10; 12) mm, respectively. The median innominate artery length was 37 (30; 44) mm. The median left subclavian artery length was 40 (34; 46) mm. Arch types are distributed differently among patients with various arch pathologies. Patients with aortic dissection type B and non-A non-B have a non-dilated ascending aorta and aortic arch. Aortic arch tortuosity, innominate and left subclavian artery lengths do not differ among aortic pathologies.
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Affiliation(s)
- Bartosz Rylski
- Department of Cardiovascular Surgery, Heart Center Freiburg University, Freiburg, Germany; Faculty of Medicine, University of Freiburg, Freiburg, Germany.
| | - Florian Schofer
- Department of Cardiovascular Surgery, Heart Center Freiburg University, Freiburg, Germany; Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Friedhelm Beyersdorf
- Department of Cardiovascular Surgery, Heart Center Freiburg University, Freiburg, Germany; Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Stoyan Kondov
- Department of Cardiovascular Surgery, Heart Center Freiburg University, Freiburg, Germany; Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Maximilian Kreibich
- Department of Cardiovascular Surgery, Heart Center Freiburg University, Freiburg, Germany; Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christopher L Schlett
- Faculty of Medicine, University of Freiburg, Freiburg, Germany; Department of Diagnostic and Interventional Radiology, Heart Center Freiburg University, Freiburg, Germany
| | - Martin Czerny
- Department of Cardiovascular Surgery, Heart Center Freiburg University, Freiburg, Germany; Faculty of Medicine, University of Freiburg, Freiburg, Germany
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40
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Jung JC, Sohn B, Chang HW, Lee JH, Kim DJ, Kim JS, Lim C, Park KH. Diameter change in completely remodelled proximal descending aorta after acute type I dissection repair: implications for estimating the pre-dissection size. Eur J Cardiothorac Surg 2021; 60:614-621. [PMID: 33667303 DOI: 10.1093/ejcts/ezab096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 01/17/2020] [Accepted: 01/26/2021] [Indexed: 01/16/2023] Open
Abstract
OBJECTIVES Pre-dissection diameter of the proximal descending thoracic aorta (p-DTA), if available, would be the reference for determining the size of the stent graft or elephant trunk. Acute type B dissection is known to increase p-DTA diameter by 23% (Rylski factor). This study aimed to investigate the accuracy of estimating post-remodelling diameter of the p-DTA based on the Rylski factor and other post-dissection morphological parameters in acute type I dissection, based on the assumption that the post-remodelling diameter is similar to the pre-dissection diameter. METHODS In 60 patients with acute type I dissection showing complete remodelling of the p-DTA false lumen after surgical repair, preoperative and post-remodelling computed tomography scans were reviewed. Parameters, including maximal true lumen diameter (TLDmax) and aortic area-derived diameter divided by the Rylski factor (AoDRylski), were measured at the p-DTA. RESULTS After complete remodelling, p-DTA diameter decreased by 4.1 mm (P < 0.001). The equivalent to the Rylski factor was 15%. Both TLDmax and AoDRylski frequently showed ≥2 mm discrepancy from post-remodelling aortic diameter (36.7% and 48.3%, respectively, P = 0.30). When 2 parameters coincided within 2 mm, two-third of their estimations were accurate. AoDRylski was more accurate than TLDmax in patients with a large extent of circumferential dissection, and vice versa with less circumferential dissection (P = 0.027). CONCLUSIONS Prediction of post-remodelling aortic diameter relying on a single morphologic parameter carries a substantial risk of overestimation and underestimation. Evaluation based on the extent of circumferential dissection together with the 2 parameters may provide a more reliable estimation.
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Affiliation(s)
- Joon Chul Jung
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Bongyeon Sohn
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Hyoung Woo Chang
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Jae Hang Lee
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Dong Jung Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Jun Sung Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Cheong Lim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Kay-Hyun Park
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
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Calafiore AM, Katsavrias K, Di Marco M, Guarracini S, Di Mauro M. Commentary: Vasa vasorum dysfunction and acute aortic syndromes: When guidelines do not follow the evolution of knowledge. JTCVS OPEN 2021; 5:33-34. [PMID: 36003167 PMCID: PMC9390436 DOI: 10.1016/j.xjon.2020.12.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 12/19/2020] [Accepted: 12/22/2020] [Indexed: 01/16/2023]
Affiliation(s)
| | - Kostas Katsavrias
- Department of Cardiac Surgery, Henry Durant Hospital, Athens, Greece
| | - Massimo Di Marco
- Department of Cardiology, “Santo Spirito” Hospital, Pescara, Italy
| | | | - Michele Di Mauro
- Department of Cardiology, “Pierangeli” Hospital, Pescara, Italy
- Cardio-Thoracic Surgery Unit, Heart and Vascular Centre, Maastricht University Medical Center, Cardiovascular Research Institute Maastricht, Maastricht, the Netherlands
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42
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Commentary: Preventing the virulent lethality of ascending aortic aneurysm. J Thorac Cardiovasc Surg 2021; 163:2031-2033. [PMID: 33744012 DOI: 10.1016/j.jtcvs.2021.02.046] [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: 02/08/2021] [Revised: 02/08/2021] [Accepted: 02/09/2021] [Indexed: 11/23/2022]
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43
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Luan J, Mao L, Zhu Z, Fu W, Zhu T. New indicators for systematic assessment of aortic morphology: a narrative review. J Thorac Dis 2021; 13:372-383. [PMID: 33569218 PMCID: PMC7867839 DOI: 10.21037/jtd-20-2728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
In order to prevent the occurrence of aortic adverse events in ascending thoracic aortic aneurysm patients, preventive surgery is the sole option in case of large aneurysm. Identifying high-risk patients timely and accurately requires effective predictive indicators of aortic adverse events and accurate risk stratification thresholds. Absolute diameter measured after a single imaging examination, which has been used as the predictive indicator for decades, has been proved to be ineffective for risk stratification in moderately dilated aorta. Previously, new indicators combining absolute diameters with personalized parameters have been reported to show better predictive power of aortic adverse events than absolute diameters by correcting the effect of these parameters on the diameters. Meanwhile, combining three-dimensional parameters to formulate risk stratification thresholds not only may characterize the aortic risk morphology more precisely, but also predict aortic adverse events more accurately. These new indicators may provide more systematic assessment methods of patients’ risk, formulate more personalized intervention strategies for ascending thoracic aortic aneurysm patients, and also provide a basis for researchers to develop more accurate and effective risk thresholds. We also highlight that the algorithm obtained by combining multiple indicators may be a better choice compared with single indicator, but this still requires the support of more evidence. Due to the particularity of syndromic aortic disease, whether these new indicators can be used for its risk stratification is still uncertain. Therefore, the scope of this manuscript does not include this kind of disease.
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Affiliation(s)
- Jingyang Luan
- Department of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Le Mao
- Department of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Ziqing Zhu
- Department of Psychology, School of Public Health, Southern Medical University, Guangzhou, China
| | - Weiguo Fu
- Department of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Ting Zhu
- Department of Vascular Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
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44
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Elefteriades JA, Ziganshin BA. Commentary: The elusive perfect criterion for aortic intervention. J Thorac Cardiovasc Surg 2020; 161:1198-1201. [PMID: 33160614 DOI: 10.1016/j.jtcvs.2020.07.071] [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: 07/22/2020] [Revised: 07/22/2020] [Accepted: 07/22/2020] [Indexed: 10/23/2022]
Affiliation(s)
- John A Elefteriades
- Aortic Institute at Yale-New Haven Hospital, Yale University School of Medicine, New Haven, Conn.
| | - Bulat A Ziganshin
- Aortic Institute at Yale-New Haven Hospital, Yale University School of Medicine, New Haven, Conn
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45
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Braverman AC, Mittauer E, Harris KM, Evangelista A, Pyeritz RE, Brinster D, Conklin L, Suzuki T, Fanola C, Ouzounian M, Chen E, Myrmel T, Bekeredjian R, Hutchison S, Coselli J, Gilon D, O'Gara P, Davis M, Isselbacher E, Eagle K. Clinical Features and Outcomes of Pregnancy-Related Acute Aortic Dissection. JAMA Cardiol 2020; 6:58-66. [PMID: 33052376 DOI: 10.1001/jamacardio.2020.4876] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Importance Women with aortopathy conditions are at risk for pregnancy-related aortic dissection, and these conditions may not be recognized until after the aortic dissection occurs. Objective To examine the clinical characteristics, imaging features, and outcomes in women with pregnancy-related acute aortic dissection. Design, Setting, and Participants A cohort study, comprising data from the International Registry of Acute Aortic Dissection (IRAD) (February 1, 1998, to February 28, 2018). The multicenter referral center study included 29 women with aortic dissection during pregnancy or less than 12 weeks post partum in IRAD from 1998 to 2018. Main Outcomes and Measures Clinical features of pregnancy-related aortic dissection to be studied included underlying aortopathy, aortic size, type of aortic dissection, timing of dissection, hypertension, and previous aortic surgery. Results A total of 29 women (mean [SD] age, 32 [6] years) had pregnancy-related aortic dissection, representing 0.3% of all aortic dissections and 1% of aortic dissection in women in the IRAD. Among women younger than 35 years, aortic dissection was related to pregnancy in 20 of 105 women (19%). Thirteen women (45%) had type A aortic dissection, and 16 women (55%) had type B. Aortic dissection onset was known in 27 women (93%): 15 during pregnancy, 4 in the first trimester, and 11 in the third trimester; 12 were post partum, occurring a mean (SD) of 12.5 (14) days post partum. At type A aortic dissection diagnosis, the mean (SD) aortic diameters were sinus of Valsalva, 54.5 (5) mm and ascending aorta, 54.7 (6) mm. At type B aortic dissection diagnosis, the mean (SD) descending aortic diameter was 32.5 (5) mm. Twenty women (69%) had an aortopathy condition or a positive family history: 13 women (65%) with Marfan syndrome, 2 women (10%) with Loeys-Dietz syndrome, 2 women (10%) with bicuspid aortic valves, 2 women (10%) with a family history of aortic disease, and 1 woman (5%) with familial thoracic aortic aneurysm. Aortopathy was not recognized until after aortic dissection in 47% of the women. Twenty-eight women (97%) survived aortic dissection hospitalization. Conclusions and Relevance Aortic dissection complicating pregnancy is rare. Most pregnancy-related aortic dissection is due to an aortopathy often not diagnosed until after aortic dissection. In this study, type A aortic dissections were associated with a dilated aorta, and type B aortic dissections often were not. Recognition of underlying conditions and risks for aortic dissection may improve management of pregnancy in women with aortopathy.
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Affiliation(s)
- Alan C Braverman
- Cardiovascular Division, Department of Medicine, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Eric Mittauer
- Medical student, Washington University School of Medicine in St Louis, St Louis, Missouri
| | - Kevin M Harris
- Minneapolis Heart Institute at Abbott-Northwestern Hospital, Minneapolis, Minnesota
| | | | - Reed E Pyeritz
- Division of Translational Medicine and Human Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - Derek Brinster
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell Health, New York, New York
| | - Lori Conklin
- Department of Anesthesiology, University of Virginia Medical School, Charlottesville
| | - Toru Suzuki
- Department of Cardiovascular Sciences, University of Leicester, Leicester, United Kingdom
| | - Christina Fanola
- Cardiovascular Division, Department of Medicine, University of Minnesota School of Medicine, Minneapolis
| | - Maral Ouzounian
- Department of Surgery University of Toronto, Toronto General Hospital, Toronto, Ontario, Canada
| | - Edward Chen
- Division of Cardiothoracic Surgery, Department of Surgery, Emory University School of Medicine, Atlanta, Georgia
| | - Truls Myrmel
- Department of Clinical Medicine, Tromsø University Hospital, Tromsø, Norway
| | | | - Stuart Hutchison
- Libin Cardiovascular Institute, University of Calgary, Calgary, Alberta, Canada
| | - Joseph Coselli
- Division of Cardiothoracic Surgery, Department of Baylor College of Medicine, Houston, Texas
| | - Dan Gilon
- Department of Cardiology, Hadassah University Medical Center, Jerusalem, Israel
| | - Patrick O'Gara
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts.,Deputy Editor, JAMA Cardiology
| | - Melinda Davis
- Cardiovascular Division, Department of Medicine, University of Michigan School of Medicine, Ann Arbor
| | - Eric Isselbacher
- Cardiovascular Division, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston
| | - Kim Eagle
- Cardiovascular Division, Department of Medicine, University of Michigan School of Medicine, Ann Arbor
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46
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Jiang W, Liu J, Dai L, Liu Y, Wu Z, Zhang H. Are dilated ascending aortas of Chinese patients more likely to dissect? Cardiovasc Diagn Ther 2020; 10:786-795. [PMID: 32968634 DOI: 10.21037/cdt-20-313] [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] [Indexed: 01/15/2023]
Abstract
Background Ascending aortic aneurysm is a disease requiring surgical intervention. However, the timing of operation is still controversial. The purpose of this study is to compare the ascending aortic diameter and postoperative outcomes in hospital between patients with simple ascending aortic dissection and patients with simple ascending aortic dilation in China, and to investigate the accuracy of the timing of operation determined by ascending aortic diameter alone. Methods We reviewed the data from 2,520 hospitalized patients of aortic aneurysm and aortic dissection who underwent surgical treatment from January 2010 to June 2017 in our hospital. A total of 139 simple ascending aortic dissection and simple ascending aortic aneurysm hospitalized patients excluding Marfan syndrome and heart valve diseases etc. (56 in the aortic dilatation group and 83 in the aortic dissection group) were enrolled. The t-test and univariable analysis were used to compare the differences between two groups. Results For the aortic diameter, the group of aneurysm has greater ascending aortic diameter and the index of ascending aortic diameter compared with the group of dissection (P<0.001, P<0.001). For male patients, the result is the same (P<0.001, P<0.001). But for female patients, there was no significant statistical significance between the two groups (P=0.631, P=0.288). For the postoperative outcomes, the dissection group had higher mortality, incidence of tracheotomy and postoperative re-exploration for hemorrhage (P=0.040, P=0.011, P=0.028). Conclusions The majority of patients with simple ascending aortic dissection present with aortic diameters <5.5 cm and this is not consistent with the current operation indications of aortic aneurysm. It is far from enough to predict aortic dissection with aortic diameter alone. More indicators are needed to do this.
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Affiliation(s)
- Wenjian Jiang
- Department of Cardiac Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Beijing Lab for Cardiovascular Precision Medicine, Beijing, China.,Department of Cardiac Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Jihong Liu
- Beijing Lab for Cardiovascular Precision Medicine, Beijing, China.,Department of Cardiac Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.,Affiliated Zhongshan Hospital of Dalian University, Dalian, China
| | - Lu Dai
- Department of Cardiac Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Beijing Lab for Cardiovascular Precision Medicine, Beijing, China
| | - Yang Liu
- Department of Cardiac Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Beijing Lab for Cardiovascular Precision Medicine, Beijing, China
| | - Zining Wu
- Department of Cardiac Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China.,Beijing Lab for Cardiovascular Precision Medicine, Beijing, China
| | - Hongjia Zhang
- Beijing Lab for Cardiovascular Precision Medicine, Beijing, China.,Department of Cardiac Surgery, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
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47
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Mullan CW, Mori M, Bin Mahmood SU, Yousef S, Mangi AA, Elefteriades JA, Geirsson A. Incidence and characteristics of hospitalization for proximal aortic surgery for acute syndromes and for aneurysms in the USA from 2005 to 2014. Eur J Cardiothorac Surg 2020; 58:583-589. [PMID: 32163136 DOI: 10.1093/ejcts/ezaa067] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 01/21/2020] [Accepted: 02/05/2020] [Indexed: 01/16/2023] Open
Abstract
OBJECTIVES The effectiveness of proximal thoracic aortic aneurysm (TAA) surgery in preventing acute aortic syndromes, such as dissection and rupture, is unknown at the populational level. This study evaluated trends in acute aortic syndrome operation incidence relative to proximal aortic surgical volume in the USA. METHODS A retrospective analysis of the National Inpatient Sample in 2005-2014 was performed. Acute aortic syndrome and TAA were identified with International Classification of Diseases, 9th edition diagnosis codes. Proximal aortic surgery was defined as the diagnosis of acute aortic syndrome or TAA with an aortic procedure and either cardioplegia, cardiopulmonary bypass or other cardiac operation. Annual rates of acute aortic syndrome surgery and proximal thoracic aneurysm surgery were adjusted for US population. Trends were evaluated using linear regression. RESULTS We identified 38 442 operations for acute aortic diagnoses and 74 953 operations for TAAs. Case volume for acute aortic syndromes increased from 0.93 to 1.63 per 100 000 (P = 0.001), and aneurysm surgery increased from 1.75 to 3.19 per 100 000 (P < 0.001). Patient and hospital characteristics differed between acute aortic and aneurysm operations, with black patients being most notably underrepresented in the aneurysm population (4.9% vs 17.0%, P < 0.001). CONCLUSIONS Acute aortic syndrome operative volume increased from 2005 to 2014 despite increasing rates of proximal aortic aneurysm surgery. Patient characteristic discrepancies were observed between the 2 groups of hospitalizations, highlighting the need for continued efforts to minimize sociodemographic disparities.
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Affiliation(s)
- Clancy William Mullan
- Division of Cardiac Surgery, Department of Surgery, Yale School of Medicine, New Haven, CT, USA
| | - Makoto Mori
- Division of Cardiac Surgery, Department of Surgery, Yale School of Medicine, New Haven, CT, USA
| | - Syed Usman Bin Mahmood
- Division of Cardiac Surgery, Department of Surgery, Yale School of Medicine, New Haven, CT, USA
| | - Sameh Yousef
- Division of Cardiac Surgery, Department of Surgery, Yale School of Medicine, New Haven, CT, USA
| | - Abeel A Mangi
- Division of Cardiac Surgery, Department of Surgery, Yale School of Medicine, New Haven, CT, USA
| | - John A Elefteriades
- Division of Cardiac Surgery, Department of Surgery, Yale School of Medicine, New Haven, CT, USA
| | - Arnar Geirsson
- Division of Cardiac Surgery, Department of Surgery, Yale School of Medicine, New Haven, CT, USA
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Gomez A, Wang Z, Xuan Y, Wisneski AD, Hope MD, Saloner DA, Guccione JM, Ge L, Tseng EE. Wall Stress Distribution in Bicuspid Aortic Valve-Associated Ascending Thoracic Aortic Aneurysms. Ann Thorac Surg 2020; 110:807-814. [PMID: 32006475 PMCID: PMC8598319 DOI: 10.1016/j.athoracsur.2019.12.035] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 11/09/2019] [Accepted: 12/16/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Bicuspid aortic valve-associated ascending thoracic aortic aneurysms (BAV-aTAAs) carry a risk of acute type A dissection. Biomechanically, dissection may occur when wall stress exceeds wall strength. Our aim was to develop patient-specific computational models of BAV-aTAAs to determine magnitudes of wall stress by anatomic regions. METHODS Patients with BAV-aTAA diameter greater than 4.5 cm (n = 41) underwent electrocardiogram-gated computed tomography angiography. Three-dimensional aneurysm geometries were reconstructed after accounting for prestress and loaded to systemic pressure. Finite element analyses were performed with fiber-embedded hyperelastic material model using LS-DYNA software (LSTC Inc, Livermore, CA) to obtain wall stress distributions. The 99th percentile longitudinal and circumferential stresses were determined at systole. RESULTS The 99th percentile longitudinal wall stresses for BAV-aTAAs at sinuses of Valsalva, sinotubular junction (STJ), and ascending aorta were 361 ± 59.8 kPa, 295 ± 67.2 kPa, and 224 ± 37.6 kPa, respectively, with significant differences in ascending aorta vs sinuses (P< 1 × 10-13) and STJ (P < 1 × 10-6). The 99th percentile circumferential wall stresses were 474 ± 88.2 kPa, 634 ± 181.9 kPa, and 381 ± 54.0 kPa for sinuses, the STJ, and the ascending aorta, respectively, with significant differences in the ascending aorta vs sinuses (P = .002) and STJ (P < 1 × 10-13). CONCLUSIONS Wall stresses, both circumferential and longitudinal, were greater in the aortic root, sinuses, and STJ than in the ascending aorta on BAV-aTAAs. These results fill a fundamental knowledge gap regarding biomechanical stress distribution in BAV-aTAA patients, which when related to wall strength may provide prognostication of aTAA dissection risk by patient-specific modeling.
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Affiliation(s)
- Axel Gomez
- Department of Surgery, University of California, San Francisco and San Francisco VA Medical Center, San Francisco, California
| | - Zhongjie Wang
- Department of Surgery, University of California, San Francisco and San Francisco VA Medical Center, San Francisco, California
| | - Yue Xuan
- Department of Surgery, University of California, San Francisco and San Francisco VA Medical Center, San Francisco, California
| | - Andrew D Wisneski
- Department of Surgery, University of California, San Francisco and San Francisco VA Medical Center, San Francisco, California
| | - Michael D Hope
- Department of Radiology, University of California, San Francisco and San Francisco VA Medical Center, San Francisco, California
| | - David A Saloner
- Department of Radiology, University of California, San Francisco and San Francisco VA Medical Center, San Francisco, California
| | - Julius M Guccione
- Department of Surgery, University of California, San Francisco and San Francisco VA Medical Center, San Francisco, California
| | - Liang Ge
- Department of Surgery, University of California, San Francisco and San Francisco VA Medical Center, San Francisco, California
| | - Elaine E Tseng
- Department of Surgery, University of California, San Francisco and San Francisco VA Medical Center, San Francisco, California.
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49
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Chung JC, Wong E, Tang M, Eliathamby D, Forbes TL, Butany J, Simmons CA, Ouzounian M. Biomechanics of Aortic Dissection: A Comparison of Aortas Associated With Bicuspid and Tricuspid Aortic Valves. J Am Heart Assoc 2020; 9:e016715. [PMID: 32750292 PMCID: PMC7792273 DOI: 10.1161/jaha.120.016715] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Current methods for aortic dissection risk assessment are inadequate for patients with ascending aortic aneurysms associated with either bicuspid aortic valves (BAVs) or tricuspid aortic valves (TAVs). Biomechanical testing of aortic tissue may provide novel insights and biomarkers. Methods and Results From March 2017 to August 2019, aneurysmal ascending aortas (BAV=23, TAV=23) were collected from elective aortic surgery, normal aortas from transplant donors (n=9), and dissected aortas from surgery for aortic dissection (n=7). These aortas underwent delamination testing in simulation of aortic dissection. Biaxial tensile testing was performed to determine modulus of elasticity (aortic stiffness), and energy loss (a measure of efficiency in performing the Windkessel function). Delamination strength (Sd) was lowest in dissected aortas (18±6 mN/mm) and highest in normal aortas (58±16 mN/mm), and aneurysms fell in between, with greater Sd in the BAV group (37±10 mN/mm) than the TAV group (27±10 mN/mm) (P<0.001). Bicuspid aortopathy was associated with greater stiffness (P<0.001), while aneurysms with TAV demonstrated greater energy loss (P<0.001). Sd decreased by 7.8±1.2 mmol/L per mm per decade of life (r2=0.45, P<0.001), and it was significantly lower for patients with hypertension (P=0.001). Sd decreased by 6.1±2.1 mmol/L per mm with each centimeter increase in aortic diameter (r2=0.15, P=0.007). Increased energy loss was associated with decreased Sd (r2=0.41), whereas there was no relationship between Sd and aortic stiffness. Conclusions Aneurysms with BAV had higher Sd than those with TAV, suggesting that BAV was protective. Energy loss was lower in aneurysms with BAV, and inversely associated with Sd, representing a potential novel biomarker.
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Affiliation(s)
| | - Edwin Wong
- Department of Mechanical and Industrial EngineeringUniversity of TorontoTorontoONCanada
- Translational Biology and Engineering ProgramTed Rogers Centre for Heart ResearchTorontoONCanada
| | - Mingyi Tang
- Department of Mechanical and Industrial EngineeringUniversity of TorontoTorontoONCanada
- Translational Biology and Engineering ProgramTed Rogers Centre for Heart ResearchTorontoONCanada
| | | | - Thomas L. Forbes
- Division of Vascular SurgeryUniversity Health NetworkTorontoONCanada
| | - Jagdish Butany
- Department of PathologyUniversity Health NetworkTorontoONCanada
| | - Craig A. Simmons
- Department of Mechanical and Industrial EngineeringUniversity of TorontoTorontoONCanada
- Translational Biology and Engineering ProgramTed Rogers Centre for Heart ResearchTorontoONCanada
- Institute of Biomaterials and Biomedical EngineeringUniversity of TorontoTorontoONCanada
| | - Maral Ouzounian
- Division of Cardiovascular SurgeryUniversity Health NetworkTorontoONCanada
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50
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Elbatarny M, Chung JCY, Ouzounian M. Commentary: Curating the culprits: Moving closer to personalized aortic surgery. J Thorac Cardiovasc Surg 2020; 160:906-907. [PMID: 32475498 DOI: 10.1016/j.jtcvs.2020.04.030] [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: 04/04/2020] [Revised: 04/04/2020] [Accepted: 04/07/2020] [Indexed: 10/24/2022]
Affiliation(s)
- Malak Elbatarny
- Division of Cardiovascular Surgery, Department of Surgery, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Jennifer C Y Chung
- Division of Cardiovascular Surgery, Department of Surgery, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Maral Ouzounian
- Division of Cardiovascular Surgery, Department of Surgery, Toronto General Hospital, University of Toronto, Toronto, Ontario, Canada.
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