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Tan SZCP, Mohammed I, Bashir M. Frozen Elephant Trunk Sizing: A 30,000-Feet Perspective with Thoraflex Hybrid Stent Graft. AORTA (STAMFORD, CONN.) 2022; 10:182-190. [PMID: 36521811 PMCID: PMC9754870 DOI: 10.1055/s-0042-1756667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
There is currently no standard, evidence-based approach for sizing the Thoraflex Hybrid prosthesis in frozen elephant trunk surgery. We present regional data on 906 Thoraflex grafts implanted in the United Kingdom between December 2012 and August 2021 to emphasize the heterogeneity in sizing practices and evaluate the impact this may have on clinical outcomes. Highlighting this heterogeneity will help develop an evidence-based approach to prosthesis sizing, thereby aiding decision-making for arch repair.
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Affiliation(s)
- Sven Z. C. P. Tan
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Idhrees Mohammed
- Institute of Cardiac and Aortic Disorders, SRM Institutes for Medical Science (SIMS Hospital), Chennai, Tamil Nadu, India
| | - Mohamad Bashir
- Institute of Cardiac and Aortic Disorders, SRM Institutes for Medical Science (SIMS Hospital), Chennai, Tamil Nadu, India,Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran,Department of Vascular and Endovascular Surgery, Velindre University National Health Service Trust, Health and Education Improvement Wales, Wales, United Kingdom,Address for correspondence Mohamad Bashir, MD, PhD, MRCS Department of Vascular and Endovascular Surgery, Velindre University NHS Trust, Health and Education Improvement WalesWales CF15 7QQUnited Kingdom
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Mohammed I, Tan SZ, Jubouri M, Shaw M, Bashir M. Institutional practice in sizing of the hybrid prosthesis in frozen elephant trunk surgery. THE JOURNAL OF CARDIOVASCULAR SURGERY 2022; 63:406-414. [PMID: 35343661 DOI: 10.23736/s0021-9509.22.12303-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
BACKGROUND The frozen elephant trunk (FET) technique for total arch replacement (TAR) is widely used for repair of aortic arch dissections and aneurysms. Despite its widespread adoption, there are no international or regional guidelines for the sizing of FET prostheses in TAR. We seek to highlight the heterogeneity thereof and pave the way for evidence-based guidelines to advise FET prosthesis sizing in TAR. METHODS An online questionnaire was sent to 22 specialist aortic surgeons from 13 different countries across North America, Europe, Asia, and Australia, inquiring about each surgeon's approach to FET prosthesis sizing. The results were then pooled for frequency analysis. RESULTS All 22 surgeons responded to the questionnaire. Zone 2 is preferred implantation zone for AAD, CAD, and TAA (selected by 72.7%, 72.7%, and 68.2% respectively). The maximal diameter of the true lumen in the DTA is the most common index measurement for AAD and CAD (40.9% and 59.1%, respectively). Stent-graft diameters equal to the index measurement is the most common approach for AAD and CAD (77.3% and 45.5%, respectively) while 59.1% of surgeons oversize the index diameter by 10% for TAA; 100 mm is the preferred length for 50.0%, 27.3%, and 40.9% of surgeons in AAD, CAD, and TAA respectively. CONCLUSIONS There is considerable heterogeneity in sizing practices for FET prostheses internationally, with variable evidence for its impact on clinical outcomes. This issue would be aided by the development of evidence-based guidelines to inform clinical decision making.
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Affiliation(s)
- Idhrees Mohammed
- Institute of Cardiac and Aortic Disorders (ICAD), SRM Institutes for Medical Sciences, SIMS Hospital, Chennai, India
| | - Sven Z Tan
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Matti Jubouri
- Hull-York Medical School, University of York, York, UK
| | - Matthew Shaw
- Research Unit, Liverpool Heart and Chest Hospital NHS Foundation Trust, Liverpool, UK
| | - Mohamad Bashir
- Institute of Cardiac and Aortic Disorders (ICAD), SRM Institutes for Medical Sciences, SIMS Hospital, Chennai, India -
- Vascular and Endovascular Surgery, Velindre University NHS Trust, Health Education and Improvement Wales, Cardiff, UK
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Tan SZCP, Jubouri M, Mohammed I, Bashir M. What Is the Long-Term Clinical Efficacy of the Thoraflex™ Hybrid Prosthesis for Aortic Arch Repair? Front Cardiovasc Med 2022; 9:842165. [PMID: 35282343 PMCID: PMC8905287 DOI: 10.3389/fcvm.2022.842165] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 01/03/2022] [Indexed: 01/02/2023] Open
Abstract
Background The widespread adoption of the frozen elephant trunk (FET) technique for total arch reconstruction (TAR) in aortic arch aneurysm and dissection has led to the development of numerous commercial single-piece FET devices, each with its own unique design features. One such device, Thoraflex™ Hybrid (Terumo Aortic, Glasgow, Scotland), has enjoyed widespread use since its introduction. We present and appraisal of its long-term clinical efficacy, based on international data. Materials and Methods Pre-, intra-, and postoperative data associated with Thoraflex™ Hybrid implantations for aortic arch dissection, aneurysm, and penetrating atherosclerotic ulcer (PAU) up to April 2019 was gathered and is presented herein. Follow-up data at discharge, 3-, 6-, 12-, 24-, 36-, 48-, 60-, 72-, and 84- months post-implantation are included. Results Data associated with 931 cases of Thoraflex™ Hybrid implantation are included. Mean age at implantation was 63 ± 12 years. 55% of patients included were male. Aortic dissection accounted for 48% (n = 464) of cases. Mean cardiopulmonary bypass and circulatory arrest durations were 202 +72 and 69 ± 50 min, respectively. 30-day mortality was 0.6% (n = 6), while overall mortality was 14 (1.5%). Freedom from adverse events at 84 months was 95% (n = 869). Postoperative complications included neurological deficit, multi-organ failure, cardiorespiratory compromise, and infection. Discussion Thoraflex™ Hybrid's unique design is advantageous in comparison to market alternatives. Our data is consistent with that reported in literature and suggests Thoraflex™ Hybrid is associated with favourable rates of mortality and morbidity. Conclusion Thoraflex™ Hybrid remains a central player in the aortic arch prosthesis market. Its use it widespread and is associated with favourable design features and clinical outcomes relative to market alternatives.
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Affiliation(s)
- Sven Z C P Tan
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Matti Jubouri
- Hull York Medical School, University of York, York, United Kingdom
| | - Idhrees Mohammed
- Cardiovascular Department, SRM Institute of Medical Science, Institute of Cardiac & Aortic Disorders, SIMS Hospital, Chennai, India
| | - Mohamad Bashir
- Cardiovascular Department, SRM Institute of Medical Science, Institute of Cardiac & Aortic Disorders, SIMS Hospital, Chennai, India.,Vascular and Endovascular Surgery, Velindre University NHS Trust, Health Education and Improvement Wales, Cardiff, United Kingdom
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NEO E-vita—NEO era! Indian J Thorac Cardiovasc Surg 2022; 38:83-90. [PMID: 35463705 PMCID: PMC8980984 DOI: 10.1007/s12055-021-01303-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 11/11/2021] [Accepted: 11/14/2021] [Indexed: 10/31/2022] Open
Abstract
AbstractIn this review article, the history of the first commercially available thoracic aortic hybrid graft, the E-vita Open, later modified to the blood-impermeable E-vita Open Plus, is reported from its beginning in 2005 until its newest variation, the E-vita Open NEO, European conformity (CE) marked in 2020. Besides the background of its design and clinical experience in Essen, concomitant evolutionary steps in surgery as well as in strategic approaches like the hybrid operating room concept are displayed, finally leading to a well-rounded surgical package with a device that can be applied in all elective as well as emergency situations with complex arch involving aortic pathologies. With the E-vita Open NEO, now, surgery has been facilitated to convenient anastomosing in any of the arch zones, with the opportunity to use the island technique with a straight graft variation as well as individual head vessel anastomosing with either a trifurcated graft for zone 0 or the branched graft for zone 2 or 3 implantation. With its proven long-term stability, the surgical armamentarium to cope with complex multisegmental thoracic aortic pathologies has been significantly improved.
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Rychla M, Dueppers P, Meuli L, Rancic Z, Menges AL, Kopp R, Zimmermann A, Reutersberg B. Influence of measurement and sizing techniques in thoracic endovascular aortic repair on outcome in acute complicated type B aortic dissections. Interact Cardiovasc Thorac Surg 2021; 34:628-636. [PMID: 34788425 PMCID: PMC8972260 DOI: 10.1093/icvts/ivab300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/16/2021] [Accepted: 09/26/2021] [Indexed: 01/16/2023] Open
Abstract
OBJECTIVES Thoracic endovascular aortic repair (TEVAR) is the first-line therapy in acute complicated type B aortic dissections (cTBAD). Nevertheless, no evidence-based consensus on the optimal measurement technique and sizing for TEVAR in cTBAD exists. The aim was to evaluate how different measurement and sizing techniques for TEVAR affect long-term outcomes. METHODS Retrospective analysis investigating the association between sizing and postoperative results after TEVAR in patients with cTBAD, treated between January 2003 and December 2020. Diameter measurements were performed perpendicular to a centreline in pre-interventional Computed tomography angiographies. Oversizing was determined by measuring aortic diameter in zone 2 of the aortic arch in relation to the implanted stent graft, and categorized into 2 sizing groups (≤10% and >10%). The primary outcome was freedom from aortic-related events. Secondary outcomes included mortality and a comparison of 3 alternative measurement techniques considering the estimated pre-dissection diameter. RESULTS Fifty-seven patients (median age 69, interquartile range 59.6-78.2 years) were included. Stent graft oversizing by ≤10% showed a trend towards fewer aortic-related events hazard ratio 0.455 (95% confidence interval 0.128-1.624, P = 0.225).The 3 measurement techniques using the pre-dissection aortic diameter differed by a mean of 1.7-4.0 mm with a variability of up to 8.4 mm. In none of the 57 patients, the same stent graft would have been chosen based on the different measurement techniques using an oversizing ≤10%. CONCLUSIONS TEVAR oversizing of ≤10% in patients with cTBAD might reduce aortic-related events up to 50%. Consensus on measurement techniques of the pre-dissection aortic diameter and stent graft sizing is of paramount importance.
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Affiliation(s)
- Miriam Rychla
- Department of Vascular Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Philip Dueppers
- Department of Vascular Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Lorenz Meuli
- Department of Vascular Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Zoran Rancic
- Department of Vascular Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Anna-Leonie Menges
- Department of Vascular Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Reinhard Kopp
- Department of Vascular Surgery, University Hospital Zurich, Zurich, Switzerland
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Bashir M, Abo Aljadayel H, Mousavizadeh M, Daliri M, Rezaei Y, Tan SZ, Mohammed I, Hosseini S. Correlation of coagulopathy and frozen elephant trunk use in aortic arch surgery: A systematic review and meta-analysis. J Card Surg 2021; 36:4699-4714. [PMID: 34550616 DOI: 10.1111/jocs.16001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 09/14/2021] [Indexed: 12/20/2022]
Abstract
BACKGROUND The advent of frozen elephant trunk (FET) for reconstruction of elective and nonelective aortic arch surgery has augmented the treatment of complex aortic pathologies in a single-stage operation. To date, no studies have been focused on the prevalence and predictors of coagulopathy potentiated by FET procedure. METHODS In a systematic review, we searched databases up to June 2020 to find studies reporting coagulopathy complications after FET procedure. A proportional meta-analysis was carried out using STATA software (StataCorp). RESULTS A total of 46 studies consisting of 6313 patients were eligible. The pooled estimation of reoperation for postoperative bleeding was 7% (95% confidence interval [CI:] 5-8; I2 = 84.73%; reported by 39 studies including 4796 patients). The mean volume of transfused packed blood cells and fresh frozen plasma was 1677 ml (95% CI: 1066.4-2287.6) and 1016.5 ml (95% CI: 450.7-1582.3). The subgroup by the stent type showed a decrease in the heterogeneity (I2 = 0.01%, I2 = 53.95%, I2 = 0.01%, and I2 = 54.41% for Thoraflex® Hybrid, E-vita®, Frozenix®, and Cronus®, respectively). The subgroup by the chronicity of operation resulted in less heterogeneity among patients undergoing elective compared with nonelective operation (I2 = 29.22% vs. I2 = 80.56% in nonelective). Meta-regression analysis showed that age and male gender significantly impacted on the reoperation for postoperative bleeding. CONCLUSIONS The FET procedure for arch replacement is associated with coagulopathy complications and the transfusion of blood products. Male, age, and selective choice of FET use were found to be the heterogeneity sources of reoperation for postoperative bleeding.
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Affiliation(s)
- Mohamad Bashir
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran.,Institute of Cardiac and Aortic Disorders (ICAD), SRM Institutes for Medical Science (SIMS Hospital), Chennai, Tamil Nadu, India.,Vascular and Endovascular Surgery, Velindre University NHS Trust, Health & Education Improvement Wales (HEIW), Wales, UK
| | - Hadi Abo Aljadayel
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mostafa Mousavizadeh
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Daliri
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Yousef Rezaei
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Sven Zcp Tan
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Idhrees Mohammed
- Institute of Cardiac and Aortic Disorders (ICAD), SRM Institutes for Medical Science (SIMS Hospital), Chennai, Tamil Nadu, India
| | - Saeid Hosseini
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
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Idhrees M, Bashir M. Controversy handled well, ends in veracity. Asian Cardiovasc Thorac Ann 2021; 29:589-591. [PMID: 34409881 DOI: 10.1177/02184923211040006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Mohammed Idhrees
- Institute of Cardiac and Aortic Disorders, SRM Institutes for Medical Science (SIMS Hospitals), Chennai, India
| | - Mohamad Bashir
- Clinical Research, SRM Institutes for Medical Science (SIMS Hospital), Chennai, Tamil Nadu, India
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Idhrees M, Bashir M. Longer stent graft in frozen elephant trunk procedure: A fear or truth? J Card Surg 2021; 36:3269-3270. [PMID: 34148255 DOI: 10.1111/jocs.15761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 06/14/2021] [Indexed: 11/28/2022]
Affiliation(s)
- Mohammed Idhrees
- Institute of Cardiac and Aortic Disorders, SRM Institutes for Medical Science (SIMS Hospital), Chennai, India
| | - Mohamad Bashir
- Cardiovascular Surgery, SRM Institutes for Medical Science (SIMS Hospital), Chennai, India
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