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Yuki H, Sundt TM, Niida T, Suzuki K, Kinoshita D, Fujimoto D, Dey D, Lee H, McNulty I, Naganuma T, Nakamura S, Usui E, Kakuta T, Jang I. Level of Perivascular Inflammation Is Significantly Lower Around the Left Internal Mammary Artery Than Around Native Coronary Arteries. J Am Heart Assoc 2024; 13:e033224. [PMID: 38879462 PMCID: PMC11255748 DOI: 10.1161/jaha.123.033224] [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: 10/21/2023] [Accepted: 05/16/2024] [Indexed: 06/19/2024]
Abstract
BACKGROUND The left internal mammary artery (LIMA) is protected from developing atherosclerosis. Perivascular inflammation, which is closely associated with atherosclerosis, can be measured by perivascular adipose tissue attenuation on computed tomography angiography. Whether the absence of atherosclerosis in LIMA is related to the lower level of perivascular inflammation is unknown. This study was performed to compare the level of perivascular inflammation between LIMA in situ and native coronary arteries in patients with coronary artery disease. METHODS AND RESULTS A total of 573 patients who underwent both computed tomography angiography and optical coherence tomography imaging were included. The level of perivascular adipose tissue attenuation between LIMA in situ and coronary arteries was compared. Perivascular adipose tissue attenuation around LIMA in situ was significantly lower around the 3 coronary arteries (-82.9 [-87.3 to -78.0] versus -70.8 [-75.9 to -65.9]; P<0.001), irrespective of the level of pericoronary inflammation or the number of vulnerable features on optical coherence tomography. When patients were divided into high and low pericoronary inflammation groups, those in the high inflammation group had more target vessel failure (hazard ratio, 2.97 [95% CI, 1.16-7.59]; P=0.017). CONCLUSIONS The current study demonstrated that perivascular adipose tissue attenuation was significantly lower around LIMA in situ than around native coronary arteries. The lower level of perivascular inflammation may be related to the low prevalence of atherosclerosis in LIMA. REGISTRATION URL: https://www.clinicaltrials.gov; Unique Identifier: NCT04523194.
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Affiliation(s)
- Haruhito Yuki
- Cardiology DivisionMassachusetts General Hospital, Harvard Medical SchoolBostonMA
| | - Thoralf M. Sundt
- Cardiac Surgery Division, Department of SurgeryMassachusetts General Hospital, Harvard Medical SchoolBostonMA
| | - Takayuki Niida
- Cardiology DivisionMassachusetts General Hospital, Harvard Medical SchoolBostonMA
| | - Keishi Suzuki
- Cardiology DivisionMassachusetts General Hospital, Harvard Medical SchoolBostonMA
| | - Daisuke Kinoshita
- Cardiology DivisionMassachusetts General Hospital, Harvard Medical SchoolBostonMA
| | - Daichi Fujimoto
- Cardiology DivisionMassachusetts General Hospital, Harvard Medical SchoolBostonMA
| | - Damini Dey
- Biomedical Imaging Research Institute, Cedars‐Sinai Medical CenterLos AngelesCA
| | - Hang Lee
- Biostatistics CenterMassachusetts General Hospital, Harvard Medical SchoolBostonMA
| | - Iris McNulty
- Cardiology DivisionMassachusetts General Hospital, Harvard Medical SchoolBostonMA
| | - Toru Naganuma
- Interventional Cardiology UnitNew Tokyo HospitalChibaJapan
| | - Sunao Nakamura
- Interventional Cardiology UnitNew Tokyo HospitalChibaJapan
| | - Eisuke Usui
- Department of CardiologyTsuchiura Kyodo General HospitalTsuchiuraJapan
| | - Tsunekazu Kakuta
- Department of CardiologyTsuchiura Kyodo General HospitalTsuchiuraJapan
| | - Ik‐Kyung Jang
- Cardiology DivisionMassachusetts General Hospital, Harvard Medical SchoolBostonMA
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West-Livingston L, Lim JW, Lee SJ. Translational tissue-engineered vascular grafts: From bench to bedside. Biomaterials 2023; 302:122322. [PMID: 37713761 DOI: 10.1016/j.biomaterials.2023.122322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 09/01/2023] [Accepted: 09/09/2023] [Indexed: 09/17/2023]
Abstract
Cardiovascular disease is a primary cause of mortality worldwide, and patients often require bypass surgery that utilizes autologous vessels as conduits. However, the limited availability of suitable vessels and the risk of failure and complications have driven the need for alternative solutions. Tissue-engineered vascular grafts (TEVGs) offer a promising solution to these challenges. TEVGs are artificial vascular grafts made of biomaterials and/or vascular cells that can mimic the structure and function of natural blood vessels. The ideal TEVG should possess biocompatibility, biomechanical mechanical properties, and durability for long-term success in vivo. Achieving these characteristics requires a multi-disciplinary approach involving material science, engineering, biology, and clinical translation. Recent advancements in scaffold fabrication have led to the development of TEVGs with improved functional and biomechanical properties. Innovative techniques such as electrospinning, 3D bioprinting, and multi-part microfluidic channel systems have allowed the creation of intricate and customized tubular scaffolds. Nevertheless, multiple obstacles must be overcome to apply these innovations effectively in clinical practice, including the need for standardized preclinical models and cost-effective and scalable manufacturing methods. This review highlights the fundamental approaches required to successfully fabricate functional vascular grafts and the necessary translational methodologies to advance their use in clinical practice.
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Affiliation(s)
- Lauren West-Livingston
- Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA; Department of Vascular and Endovascular Surgery, Duke University, Durham, NC, 27712, USA
| | - Jae Woong Lim
- Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA; Department of Thoracic and Cardiovascular Surgery, Soonchunhyang University Hospital, Bucheon-Si, Gyeonggi-do, 420-767, Republic of Korea
| | - Sang Jin Lee
- Wake Forest Institute for Regenerative Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA.
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Scicchitano P, De Palo M, Parisi G, Gioia MI, Ciccone MM. Doppler Ultrasound Selection and Follow-Up of the Internal Mammary Artery as Coronary Graft. Biomedicines 2022; 11:biomedicines11010066. [PMID: 36672574 PMCID: PMC9856174 DOI: 10.3390/biomedicines11010066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 12/17/2022] [Accepted: 12/23/2022] [Indexed: 12/29/2022] Open
Abstract
The impact of coronary artery disease (CAD) on all-cause mortality and overall disabilities is well-established. Percutaneous and/or surgical coronary revascularization procedures dramatically reduced the occurrence of adverse cardiovascular events in patients suffering from atherosclerosis. Specifically, guidelines from the European Society of Cardiology on the management of myocardial revascularization promoted coronary artery by-pass graft (CABG) intervention in patients with specific alterations in the coronary tree due to the higher beneficial effects of this procedure as compared to the percutaneous one. The left internal mammary artery (LIMA) is one of the best-performing vessels in CABG procedures due to its location and its own structural characteristics. Nevertheless, the non-invasive assessment of its patency is challenging. Doppler ultrasonography (DU) might perform as a reliable technique for the non-invasive evaluation of the patency of LIMA. Data from the literature revealed that DU may detect severe (>70%) stenosis of the LIMA graft. In this case, pulsed-wave Doppler might show peak diastolic velocity/peak systolic velocity < 0.5 and diastolic fraction < 50%. A stress test might also be adopted for the evaluation of patency of LIMA through DU. The aim of this narrative review is to evaluate the impact of DU on the evaluation of the patency of LIMA graft in patients who undergo follow-up after CABG intervention.
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Affiliation(s)
- Pietro Scicchitano
- Department of Cardiology, Hospital ‘F. Perinei’ Altamura, 70022 Altamura, Italy
- Correspondence:
| | - Micaela De Palo
- Department of Cardiac Surgery, University ‘A. Moro’ Bari, 70124 Bari, Italy
| | - Giuseppe Parisi
- Department of Cardiology, Hospital ‘S. Paolo’ Bari, 70124 Bari, Italy
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Pedraz Prieto Á. Revascularización arterial con doble mamaria. Riesgos y beneficios. CIRUGIA CARDIOVASCULAR 2022. [DOI: 10.1016/j.circv.2022.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
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Rams D, Batko J, Bartuś K, Filip G, Kowalewski M, Litwinowicz R. Left Internal Mammary Artery Operative Topography for MIDCAB and TECAB Procedures. INNOVATIONS-TECHNOLOGY AND TECHNIQUES IN CARDIOTHORACIC AND VASCULAR SURGERY 2022; 17:499-505. [PMID: 36539946 DOI: 10.1177/15569845221137578] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE The left internal mammary artery (LIMA) is a common arterial graft in minimally invasive coronary surgery (MICS), such as minimally invasive coronary artery bypass grafting (MIDCAB) or totally endoscopic coronary artery bypass (TECAB). The aim of this study was to perform an analysis of the LIMA operative topography during MICS. METHODS A total of 104 computed tomography angiographies were analyzed retrospectively using 3-dimensional reconstruction and visualization software. Measurements were developed in relation to the anatomical midpoint of the sternal body (SBMP). Parameters were evaluated as lengths, distances, diagonals, or categorical descriptions. RESULTS A total of 208 internal mammary arteries of each side were analyzed with the following results: (1) LIMA width = 2.7 mm, (2) SBMP-LIMA bifurcation length = 6.2 cm, (3) SBMP-LIMA distance = 3.2 ± 0.5 cm, (4) xiphoid midpoint-LIMA distance = 3.5 ± 0.7 cm, (5) sternal line-LIMA distance = 1.7 ± 0.3 cm, (6) xiphoid end projection-LIMA bifurcation length = 2.2 ± 1.0 cm, (7) midsternal line-LIMA bifurcation distance = 3.3 ± 0.8 cm, (8) xiphoid end-LIMA bifurcation diagonal = 4.1 ± 0.9 cm, (9) LIMA-left coronary artery distance = 7.0 ± 1.4 cm at the proximal and 7.1 ± 1.3 cm at the distal segment, and (10) LIMA-left anterior descending artery distance = 5.5 ± 1.1 cm at proximal, 4.3 cm at middle, and 4.2 ± 1.5 cm at distal segment. The extent of LIMA bifurcation ranged from the level of 5 (1%) to 7 (6%) rib cartilages. CONCLUSIONS Based on the detailed surgical anatomy of LIMA, it was concluded that the fourth intercostal space should be considered as an appropriate approach for MIDCAB or TECAB in the studied region.
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Affiliation(s)
- Daniel Rams
- Jagiellonian University Medical College, Krakow, Poland.,CAROL - Cardiothoracic Anatomy Research Operative Lab, Department of Cardiovascular Surgery and Transplantology, Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland
| | - Jakub Batko
- Jagiellonian University Medical College, Krakow, Poland.,CAROL - Cardiothoracic Anatomy Research Operative Lab, Department of Cardiovascular Surgery and Transplantology, Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland
| | - Krzysztof Bartuś
- Department of Cardiovascular Surgery and Transplantology, Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland.,John Paul II Hospital in Krakow, Poland
| | - Grzegorz Filip
- Department of Cardiovascular Surgery and Transplantology, Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland.,John Paul II Hospital in Krakow, Poland
| | - Mariusz Kowalewski
- Department of Cardiac Surgery, Central Clinical Hospital of the Ministry of Interior, Centre of Postgraduate Medical Education, Warsaw, Poland.,Thoracic Research Centre, Innovative Medical Forum, Collegium Medicum Nicolaus Copernicus University, Bydgoszcz, Poland
| | - Radosław Litwinowicz
- CAROL - Cardiothoracic Anatomy Research Operative Lab, Department of Cardiovascular Surgery and Transplantology, Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland.,Department of Cardiovascular Surgery and Transplantology, Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland.,John Paul II Hospital in Krakow, Poland.,Thoracic Research Centre, Innovative Medical Forum, Collegium Medicum Nicolaus Copernicus University, Bydgoszcz, Poland
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Gao J, Li W, Zhu J, Liu Y, Tian H. Ultrasound Evaluation of Subclavian Artery and Internal Thoracic Artery Before Coronary Artery Bypass Grafting as Part of Preoperative Vascular Assessment. Acad Radiol 2022; 30:911-918. [PMID: 35820976 DOI: 10.1016/j.acra.2022.06.008] [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: 04/28/2022] [Revised: 06/04/2022] [Accepted: 06/13/2022] [Indexed: 11/01/2022]
Abstract
RATIONALE AND OBJECTIVES Noninvasive diagnostic imaging of subclavian artery (SCA) and internal thoracic artery (ITA) is crucial to the patients planning to use ITA for coronary artery bypass grafting (CABG). The guidelines have not yet provided guidance on screening high-risk groups. The present study aimed to evaluate the contribution of ultrasonography in the assessment of SCA and ITA, especially for the patients referred for CABG who planned to use ITA graft. MATERIALS AND METHODS Patients diagnosed with multivessel coronary heart disease were enrolled and some of them planned CABG. Bilateral SCAs and ITAs were routinely evaluated by color Doppler ultrasound (CDUS) before operation. The luminal diameter and the peak systolic velocity of the proximal and distal parts of SCA and ITA were measured. Depending on the Doppler waveform, the lumen narrowing rate was calculated. RESULTS The final analysis was carried out in 572 patients. Thirty-five patients had moderate (50%-69%), severe (70%-99%) stenosis or occlusion in the SCA (left-sided in 21 and right-sided in 14). One patient had severe proximal stenosis in left ITA and one patient had no flow in left ITA due to the occlusion in left SCA. One patient had anatomic variation of isolated right aortic arch with aberrant left SCA. All of those cases were confirmed with multidetector computed tomography angiography. CONCLUSION CDUS could be used for the evaluation of SCA and ITA before CABG as part of presurgical vascular assessment and provide an import basis for the imaging diagnosis and surgical plan.
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Affiliation(s)
- Junxue Gao
- Department of Ultrasound, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing 100044, China
| | - Wenxue Li
- Department of Ultrasound, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing 100044, China
| | - Jiaan Zhu
- Department of Ultrasound, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing 100044, China.
| | - Yuejie Liu
- Department of Ultrasound, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing 100044, China
| | - Hui Tian
- Department of Ultrasound, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing 100044, China
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López-de la Cruz Y, Quintero-Fleites YF, Nafeh-Abi-Rezk MS, Chávez-González E. Fisiología y anatomía quirúrgica de la arteria mamaria interna: ¿qué debe saberse durante su disección esqueletizada? CIRUGIA CARDIOVASCULAR 2021. [DOI: 10.1016/j.circv.2021.02.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Gao J, Zhao Z, Zhu J, Tian H, Liu Y. The Role of Color Doppler Ultrasonography in the Perioperative Period of Coronary Artery Bypass Grafting: Comparison with Transit-Time Flow Measurement. Cardiology 2021; 146:583-590. [PMID: 34192706 DOI: 10.1159/000512430] [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: 02/19/2020] [Accepted: 10/16/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The value of color Doppler ultrasonography (CDUS) with the supraclavicular approach for preoperative evaluation of the native left internal mammary artery (LIMA) as well as for the postoperative detection of LIMA graft patency was recently suggested. However, the parameters such as the flow volume and pulsatile index (PI) have not been studied in detail. OBJECTIVES The objectives of this study were to analyze the LIMA data in the perioperative period and explore the relationships between the intraoperative graft flow with transit-time flow measurement (TTFM) and the postoperatively measured parameters with CDUS. METHODS Fifty-eight patients with significant stenosis (≥70%) or occlusions in left anterior descending artery (LAD) who were referred for isolated coronary artery bypass grafting (CABG) were enrolled in this study and examined by CDUS prior to CABG from April to July 2016. The perioperative measurements of proximal LIMA by CDUS were compared. In addition, the correlation between the intraoperative graft flow, such as the mean graft flow (MGF) and PI, and the immediate postoperative measurements of CDUS in LIMA bypassed grafts was statistically analyzed. RESULTS Six patients were excluded due to screening failure, or insufficient visualization of CDUS images for analysis. Fifty-two patients with in situ LIMA-LAD graft, with or without additional arterial grafts or saphenous vein grafts, were included in the final analysis. The postoperative diameters of proximal LIMA were not significantly different from preoperative diameters (2.21 ± 0.18 vs. 2.27 ± 0.22 mm, p = 0.070). The flow volume on the early postoperative CDUS significantly increased (39.77 ± 21.59 vs. 25.96 ± 13.17 mL/min, p < 0.001) and the PI significantly decreased (1.43 ± 0.46 vs. 4.20 ± 1.49, p < 0.001) versus those of preoperative measurements. The MGF had a moderate correlation with the flow volume on the early postoperative CDUS (r = 0.414, p = 0.002), and the PI by TTFM had a weak correlation with that by CDUS (r = 0.353, p = 0.010) as well. CONCLUSIONS The MGF and PI by TTFM in CABG were associated with in situ LIMA graft parameters measured by CDUS studies. CDUS is a useful functional noninvasive tool for the preoperative screening and postoperative follow-up of patients with in situ LIMA bypass.
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Affiliation(s)
- Junxue Gao
- Department of Ultrasound, Peking University People's Hospital, Beijing, China
| | - Zhou Zhao
- Department of Cardiac Surgery, Peking University People's Hospital, Beijing, China
| | - Jiaan Zhu
- Department of Ultrasound, Peking University People's Hospital, Beijing, China
| | - Hui Tian
- Department of Ultrasound, Peking University People's Hospital, Beijing, China
| | - Yuejie Liu
- Department of Ultrasound, Peking University People's Hospital, Beijing, China
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Cruz YLDL, Quintero-Fleites YF, Abi-Rezk MN. A Simplest Method to Enhance the Benefits of Internal Thoracic Artery Distal Occlusion. Braz J Cardiovasc Surg 2021; 36:416-419. [PMID: 33355807 PMCID: PMC8357378 DOI: 10.21470/1678-9741-2020-0308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
A common element of internal thoracic artery harvesting techniques is a distal vascular clamp placement at the end of the procedure, not only to avoid bleeding, but also to increase the internal hydrostatic pressure, diameter and flow. The logic indicates that the placement of this clamp at the beginning of the dissection will allow the artery to benefit earlier from these advantages. After more than five years of experience, we present a modification in the classical technique of skeletonized harvesting of the internal thoracic artery, consisting of artery distal occlusion at the beginning of the procedure. Some of its advantages are discussed.
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Affiliation(s)
- Yoandy López-de la Cruz
- Department of Cardiovascular Surgery, Santa Clara Cardiac Center, Santa Clara, Villa Clara, Cuba
| | | | - Manuel Nafeh Abi-Rezk
- Department of Cardiovascular Surgery, Hermanos Ameijeiras Hospital, Havana Center, Havana, Cuba
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Spadaccio C, Antoniades C, Nenna A, Chung C, Will R, Chello M, Gaudino MFL. Preventing treatment failures in coronary artery disease: what can we learn from the biology of in-stent restenosis, vein graft failure, and internal thoracic arteries? Cardiovasc Res 2020; 116:505-519. [PMID: 31397850 DOI: 10.1093/cvr/cvz214] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 06/01/2019] [Accepted: 08/08/2019] [Indexed: 12/18/2022] Open
Abstract
Coronary artery disease (CAD) remains one of the most important causes of morbidity and mortality worldwide, and the availability of percutaneous or surgical revascularization procedures significantly improves survival. However, both strategies are daunted by complications which limit long-term effectiveness. In-stent restenosis (ISR) is a major drawback for intracoronary stenting, while graft failure is the limiting factor for coronary artery bypass graft surgery (CABG), especially using veins. Conversely, internal thoracic artery (ITA) is known to maintain long-term patency in CABG. Understanding the biology and pathophysiology of ISR and vein graft failure (VGF) and mechanisms behind ITA resistance to failure is crucial to combat these complications in CAD treatment. This review intends to provide an overview of the biological mechanisms underlying stent and VGF and of the potential therapeutic strategy to prevent these complications. Interestingly, despite being different modalities of revascularization, mechanisms of failure of stent and saphenous vein grafts are very similar from the biological standpoint.
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Affiliation(s)
- Cristiano Spadaccio
- Department of Cardiac Surgery, Golden Jubilee National Hospital, Agamemnon St, Clydebank, G81 4DY Glasgow, UK
| | | | - Antonio Nenna
- Department of Cardiovascular Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Calvin Chung
- Department of Cardiac Surgery, Golden Jubilee National Hospital, Agamemnon St, Clydebank, G81 4DY Glasgow, UK
| | - Ricardo Will
- Department of Cardiac Surgery, Golden Jubilee National Hospital, Agamemnon St, Clydebank, G81 4DY Glasgow, UK
| | - Massimo Chello
- Department of Cardiovascular Surgery, Università Campus Bio-Medico di Roma, Rome, Italy
| | - Mario F L Gaudino
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, NY, USA
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Picichè M. Neo-angiogenesis and arteriogenesis of collaterals from the internal mammary arteries to native coronary arteries. Minerva Cardioangiol 2020; 68:285-287. [DOI: 10.23736/s0026-4725.20.05163-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
Internal mammary artery, by far, is the gold standard and first conduit for surgical revascularization especially when it comes to bypassing a lesion in the left anterior descending coronary artery. Several factors behind using this artery have been established, including but not limited to, the anatomical location, the course and flow, the elastic nature of the artery as well as the physiological characteristics that make this conduit to yield excellent long-term patency rates. This review aims to thoroughly examine current literature and establish the facts behind using this conduit in our daily surgical revascularization practice.
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Schmitt PJ, Altafulla JJ, Kikuta S, Dupont G, Iwanaga J, Monteith S, Litvack Z, Dumont AS, Tubbs RS. Internal Thoracic Artery to Vertebral Artery Bypass Surgery: A Cadaveric Feasibility Study. World Neurosurg 2019; 130:e722-e725. [PMID: 31284060 DOI: 10.1016/j.wneu.2019.06.203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Posterior circulation strokes account for over one quarter of all ischemic strokes. The frequency of vertebral artery origin stenosis (VAOS) in patients with vertebrobasilar insufficiency (VBI) has been estimated to be as high 26%-32%, and VAOS is the direct cause of posterior circulation strokes in 9% of patients. This association could have a significant genetic component. This study examines the feasibility of the internal thoracic artery (ITA) as a donor vessel for revascularization in patients with VAOS. METHODS Ten sides from 5 fresh-frozen white cadaveric necks derived from 3 women and 2 men were used in this study. The mean age of the cadavers at death was 77.2 years (range, 68-88 years). The subclavian artery, vertebral artery, and ITA were dissected. The length and diameter (proximal and distal) of the V1 segment and the length and diameter of the ITA were recorded. Finally, the ITA was transposed to the V1 segment of the vertebral artery (VA1). RESULTS The mean length of the VA1 and its diameter at the proximal and distal parts were 35.51 and 3.69 mm, respectively. The mean length and diameter of the ITA were 26.53 and 3.27 mm, respectively. Rerouting the ITA to the VA1 was feasible without tension on all sides. CONCLUSIONS This study indicates that the ITA is anatomically and hemodynamically an excellent option for bypass surgery in a VAOS scenario. We present convincing and reproducible data to aid neurosurgeons in choosing the procedure best suited to their patients.
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Affiliation(s)
- Paul J Schmitt
- Swedish Neuroscience Institute, Swedish Medical Center, Seattle, Washington, USA
| | - Juan J Altafulla
- Swedish Neuroscience Institute, Swedish Medical Center, Seattle, Washington, USA; Seattle Science Foundation, Seattle, Washington, USA; Department of Anatomical Sciences, St. George's University, St. George's, Grenada
| | - Shogo Kikuta
- Seattle Science Foundation, Seattle, Washington, USA
| | - Graham Dupont
- Seattle Science Foundation, Seattle, Washington, USA
| | - Joe Iwanaga
- Seattle Science Foundation, Seattle, Washington, USA; Department of Neurosurgery, Tulane University, New Orleans, Louisiana, USA.
| | - Stephen Monteith
- Swedish Neuroscience Institute, Swedish Medical Center, Seattle, Washington, USA
| | - Zachary Litvack
- Swedish Neuroscience Institute, Swedish Medical Center, Seattle, Washington, USA
| | - Aaron S Dumont
- Division of Gross and Clinical Anatomy, Department of Anatomy, Kurume University School of Medicine, Kurume, Japan
| | - R Shane Tubbs
- Seattle Science Foundation, Seattle, Washington, USA; Neurosurgery Department, Hospital Santo Tomas, Panama
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Full realization of internal mammary artery injury after blunt chest trauma. TURK GOGUS KALP DAMAR CERRAHISI DERGISI-TURKISH JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY 2018; 26:504-510. [PMID: 32082790 DOI: 10.5606/tgkdc.dergisi.2018.15302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 01/31/2018] [Indexed: 11/21/2022]
Abstract
Due to the substantial and continual increase in the number of motorized vehicles globally, clinicians are faced with an enormous population at risk for suffering internal mammary artery injuries after blunt chest trauma. Nevertheless, very little attention has been paid to this issue by relevant health practitioners. In addition, there is a scarcity of extant research data, as well as societal guidelines, regarding internal mammary artery injury. In cases with undetected internal mammary artery injury, however, the outcome may be catastrophic or fatal. Thus, investigating and reviewing the anatomy, etiology, diagnostic approaches, and treatment strategies for patients with internal mammary artery injury are urgently needed.
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Tohno Y, Tohno S, Quiggins R, Minami T, Mahakkanukrauh P. Scarce Occurrence of Calcification in Human Sinoatrial Nodal Arteries in Old Age. Biol Trace Elem Res 2018; 184:24-32. [PMID: 28986768 DOI: 10.1007/s12011-017-1173-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 09/27/2017] [Indexed: 10/18/2022]
Abstract
To elucidate age-related changes of the sinoatrial (sinuatrial) nodal (SAN) artery, the authors investigated age-related changes of elements in the SAN artery by direct chemical analysis. In addition, the effects of different arterial origins, arterial sizes, and genders on element accumulation were investigated in the SAN artery. Fifty-nine formalin-fixed adult Thai hearts were dissected, and the following three types of the SAN artery were found: The first type was a single SAN artery arising from the right coronary artery (RCA). The second type was a single SAN artery arising from the proximal segment of the left circumflex artery (LCX). The third type was dual SAN artery arising from both the RCA and the LCX. For element analysis, both 41 single SAN arteries arising from the RCA and the LCX and 18 larger branches of dual SAN artery were used. After the arteries were incinerated with nitric acid and perchloric acid, element contents were determined by inductively coupled plasma-atomic emission spectrometry. It was found that seven element contents such as Ca, P, S, Mg, Zn, Fe, and Na did not change significantly in the SAN arteries with aging. Regarding the relationships among seven elements in the SAN arteries, extremely significant direct correlations were found among P, S, Mg, and Fe contents with one exception. However, no significant correlations were found between Ca and either P or Mg contents in the SAN arteries. To examine an effect of the different arterial origins on element accumulation, the SAN arteries were separated into the RCA and the LCX groups by the arterial origin and age-related changes of element contents were compared between two groups. It was found that there were no significant differences between the RCA and the LCX groups in age-related changes of Ca and P contents. No gender differences were found in age-related changes of Ca and P contents in the SAN arteries. To elucidate whether calcification occurred in the SAN arteries in old age, both the mass ratios of Ca/P and Mg/Ca were estimated in the SAN arteries. The mass ratio of Ca/P increased progressively in the SAN arteries with Ca increase, being not constant. The mass ratio of Mg/Ca decreased gradually in the SAN arteries with Ca increase, but the average mass ratio of Mg/Ca was very high, being 49.4 ± 16.5%. These results indicated that calcification scarcely occurred in the SAN arteries in old age, independently of the arterial origin and gender.
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Affiliation(s)
- Yoshiyuki Tohno
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.
| | - Setsuko Tohno
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Ranida Quiggins
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Takeshi Minami
- Laboratory of Environmental Biology, Department of Life Science, Faculty of Science and Technology, Kinki University, Higashi-Osaka, Osaka, 577-8502, Japan
| | - Pasuk Mahakkanukrauh
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
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Internal Thoracic Artery to Middle Cerebral Artery Bypass Surgery: Cadaveric Feasibsility Study. World Neurosurg 2018; 112:e298-e301. [PMID: 29339321 DOI: 10.1016/j.wneu.2018.01.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/03/2018] [Accepted: 01/05/2018] [Indexed: 11/24/2022]
Abstract
BACKGROUND A few options of extracranial donor vessels exist for use in intracranial vascular bypass procedures. To our knowledge, the use of an internal thoracic artery for cerebral revascularization has not been studied previously. Hence, this cadaveric feasibility study was performed. METHODS The internal thoracic artery was dissected in 5 adult cadaveric specimens. The proximal diameter, distal diameter, and length of the vessel were measured and recorded. The artery was then transected distally at the seventh intercostal space and transposed cranially, through a pterional craniotomy opening to reach the middle cerebral artery at the skull base. RESULTS The mean diameter of the internal thoracic artery at its proximal end was 3.5 mm and at its distal end was 2 mm. The average length of the vessel was 31 cm. There was no statistical difference between the measurements recorded from different sides or sexes. In each specimen, an internal thoracic artery was dissected, rotated superiorly, and advanced subcutaneously behind the ear to reach the middle cerebral artery at the skull base without difficulty and remained tensionless at the site of anastomosis. CONCLUSIONS In this cadaveric study, we demonstrated the suitability of the internal thoracic artery in use as a donor vessel for a single site anastomosis in a high-flow cerebral bypass procedure.
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Differentially expressed genes and canonical pathways in the ascending thoracic aortic aneurysm - The Tampere Vascular Study. Sci Rep 2017; 7:12127. [PMID: 28935963 PMCID: PMC5608723 DOI: 10.1038/s41598-017-12421-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 09/07/2017] [Indexed: 12/14/2022] Open
Abstract
Ascending thoracic aortic aneurysm (ATAA) is a multifactorial disease with a strong inflammatory component. Surgery is often required to prevent aortic rupture and dissection. We performed gene expression analysis (Illumina HumanHT-12 version 3 Expression BeadChip) for 32 samples from ATAA (26 without/6 with dissection), and 28 left internal thoracic arteries (controls) collected in Tampere Vascular study. We compared expression profiles and conducted pathway analysis using Ingenuity Pathway Analysis (IPA) to reveal differences between ATAA and a healthy artery wall. Almost 5000 genes were differentially expressed in ATAA samples compared to controls. The most downregulated gene was homeobox (HOX) A5 (fold change, FC = -25.3) and upregulated cadherin-2 (FC = 12.6). Several other HOX genes were also found downregulated (FCs between -25.3 and -1.5, FDR < 0.05). 43, mostly inflammatory, canonical pathways in ATAA were found to be significantly (p < 0.05, FDR < 0.05) differentially expressed. The results remained essentially the same when the 6 dissected ATAA samples were excluded from the analysis. We show for the first time on genome level that ATAA is an inflammatory process, revealing a more detailed molecular pathway level pathogenesis. We propose HOX genes as potentially important players in maintaining aortic integrity, altered expression of which might be important in the pathobiology of ATAA.
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Ultrastructural and histomorphologic properties of the internal thoracic artery: implications for coronary revascularization. Coron Artery Dis 2017; 28:518-527. [PMID: 28678142 DOI: 10.1097/mca.0000000000000527] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Coronary artery disease represents a major health problem worldwide for which coronary artery bypass surgery remains a standard of care. Among the several grafts that are available, the internal thoracic artery (ITA) has long been considered the best as several advantages have been described compared with other vessels (e.g. saphenous vein or radial artery), namely, an absent to minor atherosclerotic development. In fact, several studies showed the presence of preatherosclerotic lesions, such as intimal and/or medial thickening, medial fibrosis, among others, in the presence of certain cardiovascular risk factors as well as established atherosclerotic lesions (i.e. type II or more lesions). This paper primarily aimed at reviewing the current knowledge on the histomorphological characteristics of ITA as well as the comparative histomorphology of ITA with other vessel grafts currently in use in coronary surgery. As some of the evidence is not clear or consensual, this paper also aimed at reviewing the main histopathological, histomorphometrical, and ultrastructural findings in ITAs from patients with known cardiovascular risk factors (e.g. aging, obesity, hypertension, diabetes, smoking, and others). As the presence of preatherosclerotic and/or atherosclerotic lesions may compromise the success of the myocardial revascularization and lead to graft failure, contributing toward the associated morbidity and/or mortality, it is essential to improve the scientific knowledge on the structural characterization of ITAs and its correlation with the cardiovascular risk profile.
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Differentially expressed genes and canonical pathway expression in human atherosclerotic plaques - Tampere Vascular Study. Sci Rep 2017; 7:41483. [PMID: 28128285 PMCID: PMC5270243 DOI: 10.1038/srep41483] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 12/21/2016] [Indexed: 12/16/2022] Open
Abstract
Cardiovascular diseases due to atherosclerosis are the leading cause of death globally. We aimed to investigate the potentially altered gene and pathway expression in advanced peripheral atherosclerotic plaques in comparison to healthy control arteries. Gene expression analysis was performed (Illumina HumanHT-12 version 3 Expression BeadChip) for 68 advanced atherosclerotic plaques (15 aortic, 29 carotid and 24 femoral plaques) and 28 controls (left internal thoracic artery (LITA)) from Tampere Vascular Study. Dysregulation of individual genes was compared to healthy controls and between plaques from different arterial beds and Ingenuity pathway analysis was conducted on genes with a fold change (FC) > ±1.5 and false discovery rate (FDR) < 0.05. 787 genes were significantly differentially expressed in atherosclerotic plaques. The most up-regulated genes were osteopontin and multiple MMPs, and the most down-regulated were cell death-inducing DFFA-like effector C and A (CIDEC, CIDEA) and apolipoprotein D (FC > 20). 156 pathways were differentially expressed in atherosclerotic plaques, mostly inflammation-related, especially related with leukocyte trafficking and signaling. In artery specific plaque analysis 50.4% of canonical pathways and 41.2% GO terms differentially expressed were in common for all three arterial beds. Our results confirm the inflammatory nature of advanced atherosclerosis and show novel pathway differences between different arterial beds.
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Picichè M. Noncoronary Collateral Myocardial Blood Flow: The Human Heart's Forgotten Blood Supply. Open Cardiovasc Med J 2015; 9:105-13. [PMID: 27006713 PMCID: PMC4768666 DOI: 10.2174/1874192401509010105] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Revised: 03/20/2015] [Accepted: 04/22/2015] [Indexed: 11/22/2022] Open
Abstract
The “noncoronary collateral circulation” (NCCC) or “noncoronary collateral myocardial blood flow”
(NCCMBF), reaches the heart through a micro-vascular network arising from the bronchial, esophageal, pericardial,
diaphragmatic, and aortic arteries. The left and right internal thoracic arteries (ITAs) along with their collateral branches
also serve as a source of NCCMBF-a feature seen in other mammals. Under certain circumstances the ITAs have a high
potential for developing collateral branches. In the case of severe Leriche syndrome or with chronic obstruction of the
abdominal aorta, the ITAs can serve as the main or even sole source of blood supply to the lower limbs. It is also possible
for the ITAs to develop angiographically visible branches that directly connect with the coronary arteries. In ischemic
conditions there is a functional, ischemia-reducing extracardiac coronary artery supply via natural ipsilateral ITA
anastomosis. To date we know little about NCCMBF and its potential benefits in clinical applications, which makes this a
challenging and intriguing field of research. This paper reviews all available data on noncoronary collateral blood supply
to the human heart.
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Affiliation(s)
- Marco Picichè
- Cardiac Surgery Department, San Filippo Neri Hospital, Via Martinotti 20, 00135, Rome, Italy
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Comparison of the Fluid Resuscitation Rate with and without External Pressure Using Two Intraosseous Infusion Systems for Adult Emergencies, the CITRIN (Comparison of InTRaosseous infusion systems in emergency medicINe)-Study. PLoS One 2015; 10:e0143726. [PMID: 26630579 PMCID: PMC4668027 DOI: 10.1371/journal.pone.0143726] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 11/08/2015] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Intraosseous infusion is recommended if peripheral venous access fails for cardiopulmonary resuscitation or other medical emergencies. The aim of this study, using body donors, was to compare a semi-automatic (EZ-IO®) device at two insertion sites and a sternal intraosseous infusion device (FASTR™). METHODS Twenty-seven medical students being inexperienced first-time users were randomized into three groups using EZ-IO and FASTR. The following data were evaluated: attempts required for successful placement, insertion time and flow rates with and without external pressure to the infusion. RESULTS The first-pass insertion success of the EZ-IO tibia, EZ-IO humerus and FASTR was 91%, 77%, and 95%, respectively. Insertion times (MW ± SD) did not show significant differences with 17 ± 7 (EZ-IO tibia) vs. 29 ± 42 (EZ-IO humerus) vs. 33 ± 21 (FASTR), respectively. One-minute flow rates using external pressures between 0 mmHg and 300 mmHg ranged between 27 ± 5 to 69 ± 54 ml/min (EZ-IO tibia), 16 ± 3 to 60 ± 44 ml/min (EZ-IO humerus) and 53 ± 2 to 112 ± 47 ml/min (FASTR), respectively. Concerning pressure-related increases in flow rates, negligible correlations were found for the EZ-IO tibia in all time frames (c = 0.107-0.366; p ≤ 0.013), moderate positive correlations were found for the EZ-IO humerus after 5 minutes (c = 0.489; p = 0.021) and strong positive correlations were found for the FASTR in all time frames (c = 0.63-0.80; p ≤ 0.007). Post-hoc statistical power was 0.62 with the given sample size. CONCLUSIONS The experiments with first-time users applying EZ-IO and FASTR in body donors indicate that both devices may be effective intraosseous infusion devices, likely suitable for fluid resuscitation using a pressure bag. Variations in flow rate may limit their reliability. Larger sample sizes will prospectively be required to substantiate our findings.
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The journey of surgery for coronary artery disease in India: adoption, customization and innovation. Indian J Thorac Cardiovasc Surg 2014. [DOI: 10.1007/s12055-014-0282-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Barner HB. Conduits for coronary bypass: internal thoracic artery. THE KOREAN JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY 2012; 45:351-67. [PMID: 23275918 PMCID: PMC3530720 DOI: 10.5090/kjtcs.2012.45.6.351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Revised: 11/11/2012] [Accepted: 11/12/2012] [Indexed: 11/19/2022]
Abstract
This second report in the series on coronary artery bypass presents the authors experience and personal views on the internal thoracic artery (ITA) which date to 1966. There has been a very gradual evolution in the acceptance of this conduit which was initially compared with the saphenous vein and viewed as an improbable alternative to it. As is common with concepts and techniques which are 'outside the box' there was skepticism and criticism of this new conduit which was more difficult and time consuming to harvest for the surgeon who had to do it all. It was viewed as small, fragile, spastic and its flow capacity was questioned. Only a few surgeons employed it because of these issues and some of them would frequently graft it to the diagonal artery as it was thought not to supply adequate flow for the left anterior descending unless it was small. After a decade, angiographic data revealed superior patency to vein grafts. Even this evidence and survival benefit reported a few years later did not convince many surgeons that their concerns about limitations justified its use. Thus widespread adaption of the ITA as the conduit of choice for the anterior descending required another decade and bilateral use is only now expanding to more than 5% of patients in the US and somewhat faster in other countries.
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Affiliation(s)
- Hendrick B Barner
- Division of Cardiothoracic Surgery, St. Louis University Hospital, USA
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