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Coronary artery bypass

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https://www.readbyqxmd.com/read/28529807/a-novel-modified-reverse-controlled-antegrade-and-retrograde-subintimal-tracking-technique-for-bypassing-the-calcified-proximal-cap-of-coronary-total-occlusions
#1
Tsuyoshi Isawa, Masahiko Ochiai, Masato Munehisa, Tatsushi Ootomo
Antegrade crossing is the most common approach to chronic total occlusions (CTOs). However, it is sometimes difficult to penetrate the proximal hard cap with guidewires, especially in the case of CTOs of anomalous coronary arteries because of a lack of support. Herein, we describe a novel, modified reverse controlled antegrade and retrograde subintimal tracking (CART) technique in which the dissection reentry was intentionally created in the proximal segment of the vessel, not within the occluded segment, using retrograde guidewire and the aid of an antegrade balloon...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28529306/normalization-of-diffuse-st-depression-with-avr-elevation-after-rehydration-in-a-patient-with-severe-aortic-stenosis
#2
Sachin R Patel, Vikas J Patel, Brittany Clark, George Rust
BACKGROUND Isolated ST elevation in lead aVR in combination with global ST depression with normalization after rehydration is a unique electrocardiographic pattern that is associated with a broad range of diagnoses. Its association with left main coronary artery disease and other acute coronary syndromes suggest the need for early and aggressive cardiac evaluation. CASE REPORT A 53-year-old man presented with altered mental status and loss of consciousness. He was unresponsive, hypotensive, tachycardiac, and diaphoretic...
May 22, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28528054/surgical-management-of-simultaneous-left-coronary-atresia-and-anomalous-right-coronary-artery-origin
#3
Shyam Sathanandam, T K Susheel Kumar, Umar Boston, Christopher J Knott-Craig
A 9-year-old child presented with syncope during exercise. He received a diagnosis of congenital atresia of the left main coronary artery by angiography. He underwent successful coronary artery bypass grafting. On the third postoperative day, he experienced acute, precordial chest pain. An urgent computed tomographic scan showed an unrecognized anomalous origin of the right coronary artery (RCA) with a 1.5-cm intramural course. He was taken back to the operating room to undergo unroofing of the RCA. This case highlights the difficulty involved in making two rare diagnoses that can cause the same exact symptoms in a patient and the surgical challenges associated with it...
June 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28528047/sclerosing-aortic-and-coronary-arteritis-due-to-igg4-related-disease
#4
Mikael Barbu, Ulf Lindström, Claes Nordborg, Andreas Martinsson, Christian Dworeck, Anders Jeppsson
We present the case of a 55-year-old woman admitted for a coronary artery bypass operation because of three-vessel coronary artery disease based on angiographic findings and clinical symptoms. Unexpected intraoperative findings with diffuse tissue thickening of the ascending aorta and coronary arteries indicated an alternate pathogenesis rather than coronary artery atherosclerosis. Histopathologic findings and clinical evaluation could confirm IgG4-related disease (IgG4-RD). IgG4-RD is a newly recognized fibroinflammatory condition that can present in a variety of organs and is characterized by common histopathologic features...
June 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28527195/changes-in-sternal-perfusion-following-internal-mammary-artery-bypass-surgery
#5
Christian D Taeger, Konstantin Klein, Raymund E Horch, Michael Weyand, Justus P Beier
BACKROUND: Coronary bypass surgery using the internal mammary artery (IMA) is among the most commonly performed procedures in treatment of advanced coronary vessel disease. Further, bilateral harvesting of the IMA is associated with increased rates of sternal wound infections. OBJECTIVE: This study aimed to explore changes in sternal perfusion, following left internal mammary artery (LIMA) harvesting. METHODS: 60 patients were divided equally into intervention- and control cohorts and underwent assessment of oxygen saturation (sO2) and relative blood flow (RBF) by laser doppler flowmetry remission spectroscopy preoperatively, 24 h and 72 h postoperatively...
May 18, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28524833/promoting-vasa-vasorum-neovascularization-of-vein-grafts-extenuates-hypoxia-of-the-wall-and-its-subsequent-influence-on-intimal-hyperplasia
#6
Rong-Jiang Zou, Zheng-Hua Wang, Chen-Xi Wang, Song Xue
BACKGROUND: The autologous saphenous vein is the most common conduit for coronary artery bypass grafting, but the vein graft disease will occur. This study used Matrigel basement membrane matrix with many different growth factors to promote vasa vasorum neovascularization and extenuate the hypoxia to improve remodeling. METHODS: This study observed the hypoxia and thickness of the vein grafts at different times. Normal veins and vein grafts with 15 min of ischemia one day postoperatively were harvested in the neck of rabbits...
June 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28523165/plasma-levels-of-matrix-metalloproteinase-9-in-patients-undergoing-off-pump-coronary-artery-bypass-grafting
#7
Haiqing Li, Zhize Yuan, Sen Li, Quan Qi, Jun Liu, Mi Zhou, Junfeng Cai, Anqing Chen, Zhe Wang, Xiaofeng Ye, Qiang Zhao
BACKGROUND: Matrix metalloproteinase 9 (MMP9) has recently emerged as a risk predictor in patients with cardiovascular diseases. However, little is known about the significance of increased plasma MMP9 in patients with perioperative myocardial injury. We aimed to investigate the role of MMP9 in the occurrence of myocardial injury during off-pump coronary artery bypass grafting (OPCAB). METHODS: A total of 34 consecutive patients with coronary artery diseases (CAD) were recruited in this prospective, observational study...
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28523031/myocardial-protection-with-glucose-insulin-potassium-infusion-during-adult-cardiac-surgery
#8
Suhail Ahmad, Rana Altaf Ahmad, Bilal Ahsan Qureshi, Mirza Ahmad Raza Baig
BACKGROUND & OBJECTIVE: Recent meta-analysis reports have called for more randomized trials to evaluate the effectiveness of GIK solution in patients of cardiac surgery. So this study was conducted to evaluate the effectiveness of Glucose-insulin-potassium (GIK) solutions in non-diabetic patients undergoing coronary artery bypass grafting. METHODS: A total number of one hundred and sixty (160) patients were randomized into two equal groups; GIK Group and non-GIK group...
March 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28520861/influence-of-practice-patterns-on-outcome-among-countries-enrolled-in-the-syntax-trial-5-year-results-between-percutaneous-coronary-intervention-and-coronary-artery-bypass-grafting%C3%A2
#9
Milan Milojevic, Stuart J Head, Michael J Mack, Friedrich W Mohr, Marie-Claude Morice, Keith D Dawkins, David R Holmes, Patrick W Serruys, Arie Pieter Kappetein
OBJECTIVES: To examine differences among participating countries in baseline characteristics, clinical practice, medication strategies and outcomes of patients randomized to coronary artery bypass grafting and percutaneous coronary intervention in the SYNTAX trial. METHODS: In SYNTAX, centres in 18 different countries enrolled 1800 patients, of which 8 countries enrolled ≥80 patients, what was projected to be a large enough sample size to be included in the analysis...
May 16, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28515825/late-presentation-of-aortic-aneurysm-and-dissection-following-cardiac-catheterization
#10
Abimbola Shofu, G Mustafa Awan, Bassam Omar, Ghazanfar Qureshi
We report a 63-year-old female with hypertension, hyperlipidemia, and prior pacemaker insertion for atrial fibrillation with symptomatic bradycardia, who was admitted with substernal chest pressure and diaphoresis. Her electrocardiogram revealed atrial fibrillation with demand ventricular pacing and her cardiac biomarkers were negative for acute coronary syndrome. Echocardiogram revealed normal left ventricular systolic function and normal aortic root diameter. Coronary angiography revealed 60-70% obtuse marginal lesion, otherwise mild disease...
April 2017: Cardiology Research
https://www.readbyqxmd.com/read/28515747/revascularization-in-ischemic-heart-failure-with-reduced-left-ventricular-ejection-fraction-the-impact-of-complete-revascularization
#11
Łukasz Pyka, Michał Hawranek, Mariusz Gąsior
Heart failure is a growing problem worldwide, with coronary artery disease being the underlying cause of over two-thirds of cases. Revascularization in this group of patients may potentially inhibit the progressive damage to the myocardium and lead to improved outcomes, but data in this area are scarce. This article emphasizes the role of qualification for revascularization and selection of method (percutaneous coronary intervention vs. coronary artery bypass grafting) and subsequently focuses on the issue of completeness of revascularization in this group of patients...
March 2017: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28515743/acute-phase-proteins-and-oxidative-stress-in-patients-undergoing-coronary-artery-bypass-graft-comparison-of-cardioplegia-strategy
#12
Dariusz Plicner, Jarosław Stoliński, Anna Rzucidło-Hymczak, Bogusław Kapelak, Anetta Undas
INTRODUCTION: Several strategies are still being introduced to cardiac surgery techniques to reduce the signs of the inflammatory response and oxidative stress. Many efforts have been made to develop the best possible method for myocardial protection. AIM: To assess the effect of the cardioplegia strategy on the systemic inflammatory response and oxidative stress. MATERIAL AND METHODS: A group of 238 consecutive, elective on-pump coronary artery bypass graft patients (CABG; 183 men, aged 64...
March 2017: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28515742/the-use-of-intraoperative-epiaortic-ultrasonography-in-monitoring-patients-over-75-years-old-treated-with-aortic-valve-replacement
#13
Tomasz Niklewski, Michał Zembala, Dariusz Puszczewicz, Paweł Nadziakiewicz, Wojciech Karolak, Marian Zembala
INTRODUCTION: Epiaortic ultrasound scanning (EAS) extended the use of ultrasound to the intraoperative diagnosis of aortic pathology. Surgical palpation of the ascending aorta underestimates the presence and severity of atherosclerotic plaques. Epiaortic ultrasound scanning has been used as an adjunct to transesophageal echocardiography (TEE) or as a primary direct diagnostic tool for imaging the ascending aorta as well as the aortic arch, which gained prominence as part of a multipronged intraoperative strategy to reduce atherosclerotic emboli...
March 2017: Kardiochirurgia i Torakochirurgia Polska, Polish Journal of Cardio-Thoracic Surgery
https://www.readbyqxmd.com/read/28514396/-long-term-results-of-different-approaches-to-revascularization-in-non-st-segment-elevation-acute-coronary-syndrome-and-multiple-coronary-atherosclerosis
#14
V I Ganyukov, R S Tarasov, Yu N Neverova, N A Kochergin, O L Barbarash, L S Barbarash
AIM: To assess the long-term results of different approaches to treating patients with non-ST-segment elevation acute coronary syndrome (NSTE ACS) and multivessel coronary artery disease (MVCAD). SUBJECTS AND METHODS: A total of 150 patients with NSTE ACS, in whom coronary angiography revealed MVCAD, were examined. The patients were divided into 3 groups according to the selected treatment policy: 1) percutaneous coronary intervention (PCI) (n=91 (60.6%)); 2) coronary artery bypass grafting (CABG) (n=40 (26...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/28514319/prospective-external-validation-of-three-preoperative-risk-scores-for-prediction-of-new-onset-atrial-fibrillation-after-cardiac-surgery
#15
Matthew J Cameron, Diem T T Tran, Jean Abboud, Ethan K Newton, Houman Rashidian, Jean-Yves Dupuis
BACKGROUND: Postoperative atrial fibrillation (POAF) is associated with early and late morbidity and mortality of cardiac surgical patients. Prophylactic treatment of atrial fibrillation (AF) has been recommended to improve outcome in cardiac surgical patients at high risk of developing POAF. Reliable models for prediction of POAF are needed to achieve that goal. This study attempted to externally validate 3 risk models proposed for preoperative prediction of POAF in cardiac surgical patients: the POAF score, the CHA2DS2-VASc score, and the Atrial Fibrillation Risk Index...
May 12, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28512782/aortocoronary-artery-dissection-a-partial-aortic-root-remodelling-aortic-valve-repair-and-coronary-artery-bypass
#16
Andrei M Beliaev, Jeevesh J Thomas, Peter N Ruygrok, Colleen Bergin, Sara J Allen, Sophie E Gormack, Jens Lund
No abstract text is available yet for this article.
May 16, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28512422/acute-onset-ocular-hypotony-after-coronary-artery-bypass-surgery
#17
Sarah Farukhi Ahmed, Audrey Xi Tai, Mason Schmutz, John Combs, Sameh Mosaed
IMPORTANCE: The purpose of this case report is to evaluate risk factors associated with post-coronary artery bypass graft (CABG) ocular hypotony compared to post-CABG ischemic optic neuropathy. OBSERVATIONS: The patient described here is a single case at the University of California, Irvine Medical Center, from July 2016. This case demonstrates the rare incidence of acute post-CABG ocular hypotony and vision loss in a patient with prior history of optic atrophy...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28511656/a-randomized-comparison-of-flow-characteristics-of-semiskeletonized-and-pedicled-internal-thoracic-artery-preparations-in-coronary-artery-bypass
#18
Opas Satdhabudha, Narupa Noppawinyoowong
BACKGROUND: Harvesting the internal thoracic artery (ITA) with semiskeletonization is an alternative technique between conventional wide pedicle and skeletonization. It is almost as simple as pedicle harvesting; however, it is supposed to provide the advantage of graft flow and length. Since the heart is unique being the only organ which is perfused during diastole, for comparing the intraoperative graft flow characteristics of semiskeletonization and pedicle technique, we used diastolic filling (DF) using transit-time flow measurement as a primary result...
May 16, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28511435/agreement-and-correlation-between-arterial-and-central-venous-blood-gas-following-coronary-artery-bypass-graft-surgery
#19
Masoumeh Esmaeilivand, Alireza Khatony, Gholamreza Moradi, Farid Najafi, Alireza Abdi
INTRODUCTION: Arterial blood sampling, used to assess patients in acute conditions, may result in complications such as thrombosis and embolism. However, it can be replaced by venous blood sampling, but there is a dearth of information on this. AIM: To assess the correlation and agreement between the arterial and central venous blood gases analyses in patients undergoing elective Coronary Artery Bypass Graft (CABG) surgery. MATERIALS AND METHODS: In this cross-sectional study, 100 ICU patients undergoing elective CABG surgery were recruited...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28507572/transient-dilutional-acidosis-but-no-lactic-acidosis-upon-cardiopulmonary-bypass-in-patients-undergoing-coronary-artery-bypass-grafting
#20
Johanna Katharina Teloh, Daniel-Sebastian Dohle, Serhat Sönmez, Konstantinos Tsagakis, Rabea Verhaegh, Miriam Petersen, Heinz Jakob, Herbert de Groot
INTRODUCTION: Dilutional acidosis may result from the introduction of a large fluid volume into the patients' systemic circulation, resulting in a considerable dilution of endogenous bicarbonate in the presence of a constant carbon dioxide partial pressure. Its significance or even existence, however, has been strongly questioned. Blood gas samples of patients operated on with standard cardiopulmonary bypass (CPB) were analyzed in order to provide further evidence for the existence of dilutional acidosis...
April 1, 2017: Archives of Medical Science: AMS
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