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Left internal mammary artery

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https://www.readbyqxmd.com/read/29336392/transesophageal-echocardiography-evaluation-of-the-aortic-arch-branches
#1
REVIEW
Thimmangouda A Patil, Santosh Kumar Ambli
Visualization of aortic arch branches by transesophageal echocardiography has been technically challenging. Visualizing these vessels helps in identifying the extent of dissection of the aorta, assessing the severity of carotid artery stenosis, presence of atheromatous plaques, patency of the left internal mammary artery graft, confirmation of subclavian artery cannulation, confirming holodiastolic flow reversal in the left subclavian artery by spectral Doppler imaging in case of severe aortic regurgitation, and confirming the optimal position of the intraaortic balloon perioperatively...
January 2018: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/29331180/oh-father-where-art-we-left-internal-mammary-artery-with-greater-saphenous-vein-grafts-still-rules-surgical-coronary-revascularization-after-30%C3%A2-years
#2
EDITORIAL
Chadwick W Stouffer, Michael E Halkos
No abstract text is available yet for this article.
December 26, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29325034/ghrelin-preserves-ischemia-induced-vasodilation-of-male-rat-coronary-vessels-following-beta-adrenergic-receptor-blockade
#3
James T Pearson, Nicola Collie, Regis R Lamberts, Tadakatsu Inagaki, Misa Yoshimoto, Keiji Umetani, Philip Davis, Gerard Wilkins, Pete P Jones, Mikiyasu Shirai, Daryl O Schwenke
Acute myocardial infarction (MI) triggers an adverse increase in cardiac sympathetic nerve activity (SNA). While β-adrenergic receptor (β-AR)-blockers are routinely used for the management of MI, they may also counter β-AR-mediated vasodilation of coronary vessels. We have reported that ghrelin prevents sympathetic activation following MI. Whether ghrelin modulates coronary vascular tone following MI, either through the modulation of SNA, or directly as a vasoactive mediator, has never been addressed.We utilized synchrotron microangiography to image coronary perfusion and vessel internal diameter (ID) in anesthetized Sprague Dawley rats before, and then again 30 mins after induction of an MI (left coronary artery ligation)...
January 9, 2018: Endocrinology
https://www.readbyqxmd.com/read/29300070/skeletonized-internal-mammary-artery-harvest-with-diathermy-and-cold-dissection
#4
Andras Durko, Edris Mahtab, Jamie Romeo, Ad Bogers
This surgical tutorial demonstrates the technique of skeletonized internal mammary artery harvesting for coronary artery bypass grafting, using diathermy and cold dissection [1]. The procedure is performed on the left internal mammary artery, but is also applicable for harvesting the right internal mammary artery.
December 12, 2017: Multimedia Manual of Cardiothoracic Surgery: MMCTS
https://www.readbyqxmd.com/read/29279526/in-situ-skeletonized-right-internal-mammary-artery-bypass-grafting-to-left-anterior-descending-artery
#5
Qiang Ji, LiMin Xia, YunQing Shi, RunHua Ma, JinQiang Shen, Hao Lai, WenJun Ding, ChunSheng Wang
This study aimed to evaluate the feasibility and the mid-term efficacy of an in situ skeletonized right internal mammary artery (IMA) bypass grafting to a left anterior descending artery (LAD), and to determine risk factors for IMA graft failure in a single-center study.From January 2012 to December 2015, 189 patients (173 males, 50.6 ± 6.0 years old) undergoing first isolated coronary artery bypass grafting surgery with the in situ skeletonized right IMA grafting to the LAD were included in this study. Baseline characteristics, peroperative data, and follow-up outcomes were investigated and analyzed...
December 27, 2017: International Heart Journal
https://www.readbyqxmd.com/read/29277506/high-output-cardiac-failure-and-coronary-steal-with-an-arteriovenous-fistula
#6
Amtul Aala, Sairah Sharif, Leslie Parikh, Paul C Gordon, Susie L Hu
Creation of an arteriovenous access for hemodialysis can provoke a sequence of events that significantly affects cardiovascular hemodynamics. We present a 78-year-old man with end-stage renal disease and concomitant coronary artery disease previously requiring coronary artery bypass grafting including a left internal mammary graft to the left anterior descending artery, ischemic cardiomyopathy with left ventricular systolic dysfunction, and severe aortic stenosis who developed hypotension unresponsive to medical therapy after recent angioplasty of his ipsilateral arteriovenous fistula for high-grade outflow stenosis...
December 22, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/29258527/case-report-osteogenesis-imperfecta-internal-mammary-artery-graft-nitinol-clips
#7
Ludovic Melly, Anne-Sophie Dincq, Claude Hanet, Benoît Rondelet
BACKGROUND: Osteogenesis imperfecta is a genetic disorder of connective tissue causing mostly left-sided heart valves and aortic root pathologies, but a coronary artery involvement reflecting an increased sensitivity to cardiovascular risk factors is also suspected in this patient population. CASE PRESENTATION: We report a 38-year-old patient with an osteogenesis imperfecta and a typical presentation of an acute myocardial infarction. The coronary angiogram showed a coronary 3-vessel disease...
December 19, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/29232299/the-axillary-intra-aortic-balloon-pump-as-a-bridge-to-recovery-allows-early-ambulation-in-long-term-use-case-series-and-literature-review
#8
Nnamdi Nwaejike, Andre Y Son, Chetan B Patel, Jacob N Schroder, Carmelo A Milano, Mani A Daneshmand
We evaluated the feasibility, tolerability, and efficacy of a strategy for transaxillary artery intra-aortic balloon pump placement for extended mechanical circulatory support of patients with postcardiotomy shock as a bridge to recovery. Patients requiring prolonged intra-aortic balloon pump support for postcardiotomy heart failure were identified. Intra-aortic balloon pump was tunneled through a 6-mm Dacron graft anastomosed to the right axillary artery. The intra-aortic balloon pump catheter is advanced under fluoroscopic guidance into the descending thoracic aorta...
November 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29221333/successful-treatment-of-a-ruptured-left-internal-mammary-artery-aneurysm-with-a-delayed-diagnosis-of-type-i-neurofibromatosis
#9
Do Wan Kim, In Seok Jeong, Kook Joo Na, Bong Suk Oh, Byung Hee Ahn, Sang Yun Song
Neurofibromatosis type I (NF-1) induced vasculopathy is rare but catastrophic complication after aneurysmal rupture. We present the case of a 55-year-old female who developed hypovolemic shock because of left internal mammary artery (IMA) pseudoaneurysm rupture associated with NF-1. Even she was not detected NF-1 at the time of arrival in emergency room. We decided to perform percutaneous embolization instead of surgical approach. In this case, after intervention, the ruptured left IMA aneurysm was well treated...
September 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29210019/pathology-of-stent-implantation-in-internal-mammary-artery
#10
Hiroyoshi Mori, Ryan Braumann, Sho Torii, Hiroyuki Jinnouchi, Emanuel Harari, Robert Kutys, Maria Romero, Renu Virmani, Aloke Finn
The internal mammary artery (IMA) is the most durable conduit for bypassing the left anterior descending (LAD) coronary artery in patients undergoing coronary artery bypass graft surgery (CABG). However, little is known about how the IMA reacts histologically to stent implantation. From CVPath stent registry (1048 lesions, 614 cases), we obtained 4 stent lesions (2 bare metal stents, 2 drug-eluting stents) involving IMA grafts. The mean age of our patients was 63 years and the duration of stent implantation in the IMA ranged from 5 days to 5 years...
December 5, 2017: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/29164559/effects-of-carvedilol-on-vascular-reactivity-in-human-left-internal-mammary-artery
#11
M Guzeloglu, E Ertuna, M Z Arun, B Reel
OBJECTIVE: Surgical treatment choice for coronary artery disease is coronary artery bypass grafting (CABG) surgery. Left internal mammary artery (LIMA) is frequently used as an arterial graft in CABG operations. Perioperative spasm of LIMA can result in increased morbidity and mortality. Pharmacological interventions are routinely used for prevention and treatment of LIMA spasm. In this study, we aimed to investigate the effects of carvedilol, an alpha- and beta-adrenergic receptor blocker, on responses to endogenous vasoconstrictors which play a role in graft spasm and the possible interaction between carvedilol and diltiazem/papaverine which are vasodilators commonly used in CABG surgery...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29153808/redo-robotic-endoscopic-beating-heart-coronary-bypass-tecab-after-previous-tecab
#12
Sarah Nisivaco, Mackenzie McCrorey, Dorothy Krienbring, Brooke Patel, Sudhir Srivastava, Husam H Balkhy
Redo-totally endoscopic coronary artery bypass (TECAB) after previous TECAB to our knowledge has never been reported in the literature. We present a case report of a 65-year-old gentleman who underwent a second beating-heart TECAB with the right internal mammary artery (IMA) to the obtuse marginal branch, following previous TECAB (left IMA-diagonal/left anterior descending). An extensive experience in robotic coronary operation and anastomotic devices contributed to the successful outcome in this patient. We conclude that prior TECAB is not a contraindication to redo-TECAB as long as an IMA conduit is available and left lung adhesions are not prohibitive...
December 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29138364/retrograde-cto-pci-of-native-coronary-arteries-via-left-internal-mammary-artery-grafts-insights-from-a-multicenter-u-s-registry
#13
Peter Tajti, Aris Karatasakis, Dimitri Karmpaliotis, Khaldoon Alaswad, Farouc A Jaffer, Robert W Yeh, Mitul Patel, Ehtisham Mahmud, James W Choi, Anthony H Doing, Catalin Toma, Barry Uretsky, Santiago Garcia, Jeffrey W Moses, Manish Parikh, Ajay Kirtane, Ziad A Ali, Raja Hatem, Judit Karacsonyi, Barbara A Danek, Bavana V Rangan, Subhash Banerjee, Imre Ungi, Emmanouil S Brilakis
BACKGROUND: Retrograde percutaneous coronary intervention (PCI) of native coronary artery chronic total occlusion (CTO) via left internal mammary artery (LIMA) graft has received limited study. METHODS AND RESULTS: We compared the clinical and procedural characteristics and outcomes of retrograde CTO-PCI through LIMA grafts vs other conduits in a contemporary multicenter CTO registry. The LIMA was used as the collateral channel in 20 of 990 retrograde CTO-PCIs (2...
November 15, 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29126818/composite-y-grafts-from-the-left-internal-mammary-artery-current-considerations
#14
EDITORIAL
Hugh S Paterson, Paul G Bannon
The use of composite coronary artery bypass grafts from the left internal mammary artery (LIMA) has increased over the last 20 years. Total arterial revascularisation can be achieved with two arterial conduits and is associated with a reduced risk of stroke. However, the traditional coronary bypass graft configurations of the in situ LIMA and aorto-coronary saphenous vein grafts remain as the mainstay of coronary bypass surgery in most centres. Concerns regarding composite Y grafts relate to (1) the adequacy of a single inflow for all coronary bypass grafts; (2) the risk of compromising the LIMA flow to the left anterior descending coronary artery; (3) the effects of competitive flow on graft patency; and (4) the use of sequential coronary anastomoses...
October 28, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29122958/a-comparison-of-postoperative-morphometric-and-hemodynamic-changes-between-saphenous-vein-and-left-internal-mammary-artery-grafts
#15
Tingting Fan, Yundi Feng, Feng Feng, Zhongjie Yin, Dayou Luo, Yuan Lu, Yingjin Xu, Wenchang Tan, Yunlong Huo
There is higher long-term failure of the saphenous vein graft (SVG) compared with the left internal mammary artery (LIMA) graft, which is affected by the hemodynamic environment. A comprehensive analysis of postoperative structure-function changes is important to study the atherogenesis in the SVG A comparison of morphometric and hemodynamic parameters was carried out between LIMA grafts and SVGs and between different time points postoperatively. Various parameters were obtained from the image reconstruction and flow simulation in patients, who underwent CT exams for ~1 year, 5 and 10 years after revascularization...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29062616/association-of-internal-mammary-artery-flow-with-different-comorbidities-and-post-coronary-artery-bypass-graft-complications
#16
Mudassir Iqbal Dar, Asim Hassan Dar, Muhammad Bilal, Mansoor Ahmad, Abdul Haseeb
Objective The internal mammary artery (IMA) is commonly used arterial graft for coronary artery bypass surgery (CABG). The IMA has a better patency and survival. This study considers different comorbidities and conditions where IMA flow may be low. Therefore, the main objective is to determine the flow of IMA in different diseases, its relation to gender, age, and in different blood groups in order to prevent possible complications. Methods A prospective study was conducted at the Cardiac Surgery Unit, Civil Hospital Karachi from January 2013 to December 2015...
August 20, 2017: Curēus
https://www.readbyqxmd.com/read/29061389/mid-term-graft-patency-of-right-versus-left-internal-mammary-artery-as-arterial-conduit-usage-for-left-anterior-descending-artery-revascularisation-insights-from-a-single-centre-study-of-propensity-matched-data
#17
Qiang Ji, LiMin Xia, YunQing Shi, RunHua Ma, JinQiang Shen, Hao Lai, WenJun Ding, ChunSheng Wang
BACKGROUND: Previous studies reported the strategy of in situ skeletonised right internal mammary artery (RIMA) grafting to the left anterior descending artery (LAD). However, few reports have focused on assessing RIMA graft patency rate after grafting to the LAD. This study aimed to assess mid-term graft patency of in situ skeletonised RIMA grafting to the LAD versus in situ skeletonised left internal mammary artery (LIMA) grafting to the LAD in a single-centre propensity-matched study...
October 20, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/29058975/true-congenital-atresia-of-the-left-main-coronary-ostium-delayed-presentation
#18
Varadaraju Raju, Ramesh Chandrashekar Hebbale, Chandra Sena Muniswamy, Umesh Sivanna, Sunil Kumar Kondethimmanahally Rangaiah
Congenital atresia of the left main coronary ostium is a rare coronary anomaly presenting in adulthood. A 48-year-old man presented with unstable angina. Coronary angiography showed an absent left coronary ostium with a super-dominant right coronary artery retrogradely filling the left system. Computed tomography-angiography with 3-dimensional reconstruction confirmed the absence of the left main coronary artery. In view of ongoing chest pain, the patient was offered coronary artery bypass surgery. Total arterial revascularization was performed with a left internal mammary artery-left radial artery Y-graft...
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/29022414/iatrogenic-breast-infarct-following-coronary-artery-bypass-graft-surgery-with-harvesting-of-left-internal-mammary-artery
#19
Jacob Sweeney, Matthew Skovgard, Syed Hoda
No abstract text is available yet for this article.
October 1, 2017: International Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28988450/feasibility-of-coronary-angiography-and-percutaneous-coronary-intervention-after-transcatheter-aortic-valve-replacement-using-a-medtronic%C3%A2-self-expandable-bioprosthetic-valve
#20
Wah Wah Htun, Cindy Grines, Theodore Schreiber
BACKGROUND AND OBJECTIVE: With aging, the progression of atherosclerosis in the coronary arteries is expected. The Medtronic™ self-expandable aortic bioprosthetic valve is deployed in the supra-annular position, and it has been challenging to selectively engage coronary arteries post-transcatheter aortic valve replacement (TAVR) even though there are diamond-shaped spaces in the mesh frame within the valve. Given the scarcity of data, we analyzed angiographic and clinical data from all patients requiring coronary angiography (CA) or intervention post-TAVR...
October 8, 2017: Catheterization and Cardiovascular Interventions
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