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https://www.readbyqxmd.com/read/29164559/effects-of-carvedilol-on-vascular-reactivity-in-human-left-internal-mammary-artery
#1
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/29164158/development-of-multiple-aortic-mycotic-aneurysms-after-cardiac-catheterization
#2
Desiree A Steimer, John J Squiers, J Michael DiMaio, Katherine B Harrington
A 71-year-old male with a past medical history of coronary artery bypass surgery developed multiple, infected pseudoaneurysms of the ascending aorta and aortic root 1 year after cardiac catheterization. He underwent aortic root replacement with a 24-mm homograft. Tissue culture from operative specimens revealed invasive Aspergillus fumigatus infection. He was treated with voriconazole for 3 months. After 1 year, he had no recurrence of symptoms, pseudoaneurysm, or fungal infection.
October 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/29163951/coronary-artery-anomalies-unusually-high-incidence-of-anomalies-with-a-malignant-course-in-an-asian-population
#3
Abdulaziz M Alkhulaifi, Nidheesh Chooriyil, Maryam Alkuwari, Abdelnasser N Ghareep, Cornelia Carr
Objectives: Coronary artery anomalies are uncommon, but important cardiac malformations, representing the second commonest cause of death in young athletes. Methods: We utilized computerized tomographic angiography to screen and precisely delineate coronary artery anomalies in patients with minimal cardiac symptoms. Results: During 3.5-year period, we performed 2888 computerized tomographic angiographies. A total of 33 (1.1%; 95% confidence interval = 0...
2017: SAGE Open Medicine
https://www.readbyqxmd.com/read/29162507/biomechanical-property-and-modelling-of-venous-wall
#4
REVIEW
Wenguang Li
Human saphenous vein has long been used as coronary artery bypass grafts to survive a heart arrested by blocked coronary arteries. Biomechanical properties of the saphenous vein can be critical because mismatch in the biomechanical property between a coronary artery and a graft will reduce graft patency and speed up disease development in the graft. In this paper hence the active and passive biomechanical behaviours of the human saphenous vein and other venous walls were reviewed extensively and comprehensively...
November 18, 2017: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/29156022/anaortic-off-pump-versus-clampless-off-pump-using-the-pas-port-device-versus-conventional-coronary-artery-bypass-grafting-mid-term-results-from-a-matched-propensity-score-analysis-of-5422-unselected-patients
#5
Nobuyuki Furukawa, Oliver Kuss, Konstantin Preindl, André Renner, Anas Aboud, Kavous Hakim-Meibodi, Michael Benzinger, Thomas Pühler, Stephan Ensminger, Buntaro Fujita, Tobias Becker, Jan F Gummert, Jochen Börgermann
OBJECTIVES: Meta-analyses from observational and randomized studies have demonstrated benefits of off-pump surgery for hard and surrogate endpoints. In some of them, increased re-revascularization was noted in the off-pump groups, which could impact their long-term survival. Therefore, we analyzed the course of all patients undergoing isolated coronary surgery regarding the major cardiac and cerebrovascular event (MACCE) criteria. METHODS: A prospective register was taken from a high-volume off-pump center recording all anaortic off-pump (ANA), clampless off-pump (PAS-Port) and conventional (CONV) coronary artery bypass operations between July 2009 and June 2015...
October 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29155387/the-impact-of-chronic-kidney-disease-on-outcomes-following-percutaneous-coronary-interventions-versus-coronary-artery-bypass-grafting-in-patients-with-complex-coronary-artery-disease-5-year-follow-up-of-the-syntax-trial
#6
Milan Milojevic, Stuart J Head, Michael J Mack, Friedrich W Mohr, Marie-Claude Morice, Keith D Dawkins, David R Holmes, Patrick W Serruys, A Pieter Kappetein
AIMS: To investigate short-term and 5-year follow-up results from patients randomized to coronary artery bypass grafting (CABG) or percutaneous coronary intervention (PCI) with paclitaxel-eluting stents in the SYNTAX trial, focusing on patients with chronic kidney disease (CKD). METHODS AND RESULTS: Baseline glomerular filtration rate estimates (eGFR) were available in 1638 patients (PCI=852 and CABG=786). The Kidney Disease Improving Global Outcomes threshold was used to define staging of CKD...
November 21, 2017: EuroIntervention
https://www.readbyqxmd.com/read/29153808/redo-robotic-endoscopic-beating-heart-coronary-bypass-tecab-after-previous-tecab
#7
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/29153509/transcatheter-embolization-of-a-giant-coronary-artery-pseudoaneurysm
#8
Pratik Dalal, Divyashree Varma, Ripa Chakravorty, Salil Sethi, Steven Bailey, Anand Prasad
A 53-year-old diabetic male with sternal dehiscence presented with recurrent staphylococcus bacteremia 2years after coronary artery bypass grafting (CABG). He was found to have a giant right coronary artery (RCA) pseudoaneurysm and a coronary cameral fistula on imaging. Due to excessive surgical risk, the patient underwent percutaneous treatment with a 5mm Amplatzer vascular plug 4 (St. Jude Medical, St.Paul, MN). Post-procedure imaging showed successful cessation of flow into the pseudoaneurysm and follow-up CT scan demonstrated significant improvement in the size of the pseudoaneurysm...
November 16, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29153000/coronary-bypass-in-left-ventricular-dysfunction-and-differential-cardiac-recovery
#9
Lucian Lozonschi, Takushi Kohmoto, Satoru Osaki, Nilto C De Oliveira, Ravi Dhingra, Shahab A Akhter, Paul C Tang
Background We aimed to examine the efficacy of surgical revascularization with respect to improvement in ventricular function and survival in patients with ischemic cardiomyopathy and poor left ventricular function. Methods We retrospectively analyzed the data of 429 patients (median age 64.6 years, 81.1% male) with ejection fractions <40% undergoing isolated primary coronary artery bypass grafting from 2000 to 2016. Techniques included on-pump cardioplegic arrest ( n = 312), off-pump ( n = 75), and on-pump beating heart ( n = 42)...
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/29151401/evaluation-of-a-primary-care-paramedic-stemi-bypass-guideline
#10
Jonathan L Kwong, Garry Ross, Linda Turner, Chris Olynyk, Sheldon Cheskes, Adam Thurston, P Richard Verbeek
OBJECTIVE: Limited evidence supports primary care paramedic (PCP) direct transport of ST-segment elevation myocardial infarction (STEMI) patients for percutaneous coronary intervention (PCI). The goal of this study was to evaluate an urban-based PCP STEMI bypass guideline. METHODS: We reviewed consecutive Toronto Paramedic Services call reports between April 7, 2015, and May 31, 2016, regarding STEMI patients identified by PCPs. The primary outcome was patient assignment (stable versus unstable) according to guideline criteria...
November 20, 2017: CJEM
https://www.readbyqxmd.com/read/29151335/comparison-of-tidal-volume-and-deep-breath-preoxygenation-techniquesundergoing-coronary-artery-bypass-graft-surgery-effects-of-hemodynamicresponse-and-arterial-oxygenation
#11
Zafer Taş, Tülay Hoşten, Alparslan Kuş, Sevim Cesur, Neşe Türkyılmaz, Ahmet Arıkan, Zeynep Mine Solak
Background/aim: Different techniques exist for the preoxygenation of patients that will be operated on under general anesthesia. Preoxygenation with the deep breath (DB) method may affect cardiovascular stability, which is crucial for coronary artery bypass graft (CABG) patients. In this study, we aimed to compare the effects of the 3 min TVB preoxygenation technique and 1 min 8DBs technique on hemodynamic response and arterial oxygenation in patients with normal ejection fraction that were scheduled for elective CABG surgery...
November 13, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29151310/comparison-of-the-cardioprotective-effects-of-dexmedetomidineand-remifentanil-in-cardiac-surgery
#12
Mediha Türktan, Yasemin Güneş, Hafize Yalınız, Selçuk Matyar, Zehra Hatipoğlu, Ersel Güleç, Uğur Göçen, Atakan Atalay
Background/aim: Myocardial protection is an important factor of open heart surgery and biological biomarkers (lactate, CKMB, cardiac troponin I, and pyruvate) are used to assess myocardial damage. This study compares the effects of dexmedetomidine and remifentanil on myocardial protection during coronary artery bypass grafting (CABG) surgery. Materials and methods: Patients scheduled for elective CABG surgery (n = 60) were included in this study. Anesthesia induction was introduced with propofol, fentanyl, and vecuronium bromide...
November 13, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29149707/over-expression-of-cyclooxygenase-2-in-increased-reticulated-platelets-leads-to-aspirin-resistance-after-elective-off-pump-coronary-artery-bypass-surgery
#13
Xiaoxuan Gong, Xuezhong Wang, Zhuowen Xu, Tiantian Zhu, Qiu Zhang, Jinying Zhang, Xiaowei Wang, Chunjian Li
INTRODUCTION: Aspirin resistance (AR) has been reported to present after coronary artery bypass graft causing saphenous vein graft failure. We aimed to investigate the factors that affect the anti-platelet effect of aspirin after off-pump coronary artery bypass surgery (OPCAB). MATERIALS AND METHODS: Thirty OPCAB candidates were successively recruited. Platelet count, platelet aggregation, reticulated platelet (RP), platelets' cyclooxygenase (COX)-1 and COX-2 expressions were determined during the peri-operative period...
November 9, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/29148628/clinical-significance-of-st-depression-at-exercise-stress-testing-in-competitive-athletes-usefulness-of-coronary-ct-during-screening
#14
Fabio Sperandii, Emanuele Guerra, Eliana Tranchita, Carlo Minganti, Chiara Lanzillo, Antonia Nigro, Federico Quaranta, Attilio Parisi, Mauro DI Roma, Luciano Maresca, Federica Fagnani, Leonardo Calò
BACKGROUND: Congenital coronary anomalies (CCAs) and coronary artery disease (CAD) arouse intense scientific and clinical interest in sports medicine and sports cardiology medical communities because of their potential to trigger sudden cardiac death (SCD) in athletes. Exercise stress testing represent the first instrumental assessment to evaluate electrocardiographic changes during effort. Coronary computed tomography angiography (CCTA) is an advanced accurate noninvasive imaging modality for excluding CAD and abnormalities of origin and course of coronary vessels...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29148142/outcomes-of-primary-percutaneous-coronary-intervention-in-acute-myocardial-infarction-due-to-unprotected-left-main-thrombosis-the-asia-pacific-left-main-st-elevation-registry-aster
#15
Jonathan Yap, Gagan D Singh, Jung-Sun Kim, Krishan Soni, Kelvin Chua, Alvin Neo, Choong Hou Koh, Ehrin J Armstrong, Stephen W Waldo, Kendrick A Shunk, Reginald I Low, Myeong-Ki Hong, Yangsoo Jang, Khung Keong Yeo
INTRODUCTION: Prior studies of ULM STEMI have been confined to small cohorts. Recent registry data with larger patient cohorts have shown contrasting results. We aim to study the outcomes of patients with unprotected left main (ULM) ST-elevation myocardial infarction (STEMI) who underwent primary percutaneous coronary intervention (PCI). METHODS: The Asia-pacific left main ST-Elevation Registry (ASTER) is a multicenter retrospective registry involving 4 sites in Singapore, South Korea, and the United States...
November 16, 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/29147809/application-of-actuator-driven-pulsed-water-jet-for-coronary-artery-bypass-grafting-assessment-in-a-swine-model
#16
Tomoyuki Suzuki, Shunsuke Kawamoto, Atsuhiro Nakagawa, Toshiki Endo, Teiji Tominaga, Masatoshi Akiyama, Osamu Adachi, Kiichiro Kumagai, Yoshikatsu Saiki
Actuator-driven pulsed water-jet (ADPJ) dissection is an emerging surgical method for dissecting tissue without heat and mechanical injury to vessels. We elucidated the mechanical properties of the piezo ADPJ and evaluated its usefulness and safety in coronary artery bypass grafting procedures. The relationship between the input voltage (10-100 V) and peak pressure of the pulsed water jet was evaluated. The tissue strengths of swine internal thoracic and coronary arteries and the surrounding tissues were measured to assure tissue-selective dissection...
November 16, 2017: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/29147480/a-rare-case-of-late-onset-saphenous-vein-graft-spasm
#17
Nirmal Guragai, Upamanyu Rampal, Rahul Vasudev, Hiten Patel, Meherwan B Joshi, Fayez Shamoon
Spasm following coronary artery bypass graft surgery has been well established in arterial grafts, especially in grafts utilizing the internal mammary. Venous graft spasms are uncommon and are only observed in vein grafts during or soon after the coronary artery bypass surgery. It is exceedingly rare to see spasm of venous graft beyond one year of surgery. We report a 72-year-old female who had coronary artery bypass graft three years ago and presented with new onset chest pain for one month. The coronary angiogram revealed severe spasm of the proximal aspect of a patent saphenous venous graft which was relieved by intracoronary nitroglycerine...
2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/29146627/single-session-versus-staged-procedures-for-elective-multivessel-percutaneous-coronary-intervention
#18
Toshiaki Toyota, Takeshi Morimoto, Hiroki Shiomi, Kyohei Yamaji, Kenji Ando, Koh Ono, Satoshi Shizuta, Naritatsu Saito, Takao Kato, Shuichiro Kaji, Yutaka Furukawa, Yoshihisa Nakagawa, Kazushige Kadota, Minoru Horie, Takeshi Kimura
OBJECTIVES: To clarify the effect of single-session multivessel percutaneous coronary intervention (PCI) strategy relative to the staged multivessel strategy on clinical outcomes in patients with stable coronary artery disease (CAD) or non-ST-elevation acute coronary syndrome. METHODS: In the Coronary REvascularisation Demonstrating Outcome Study in Kyoto PCI/coronary artery bypass grafting registry cohort-2, there were 2018 patients who underwent elective multivessel PCI...
November 16, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29146553/impact-of-marital-status-on-outcomes-following-st-segment-elevation-myocardial-infarction
#19
Moo Hyun Kim, Kwang Min Lee, Soo Jin Kim, So Yeon Kim, Jong Seong Park, Young Rak Cho, Kyungil Park, Tae Ho Park, Young Dae Kim, Victor Serebruany
BACKGROUND: Mood disorders, depression, and loneliness are established risk factors for thrombotic occlusions. Social relationships in general, and marital status in particular may play a role in predicting cardiovascular outcomes and survival after ST-segment elevation myocardial infarction (STEMI), but the evidence is inconclusive especially in Asians. METHODS: The Korean patients presented with STEMI (n=980) constituted married (n=780); or widowed, divorced, or single (WDS, n=200) groups...
July 22, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29145723/statin-initiation-and-renal-outcomes-following-isolated-coronary-artery-bypass-grafting-a-meta-analysis
#20
Yushu Wang, Sui Zhu, Rongsheng DU, Juteng Zhou, Yucheng Chen, Qing Zhang
BACKGROUND: The effects of preoperative statin therapy (PST) on renal outcomes in patients with isolated coronary artery bypass grafting (CABG) are in controversial. This study aimed to assess the effects of preoperative statin use on postoperative renal outcomes in patients undergoing isolated CABG. METHODS: PubMed, EMBASE, and Cochrane Library were searched for studies published up to February 2017. Pooled odds ratio (OR) and its corresponding 95% confidence interval (95% CI) were calculated...
November 16, 2017: Journal of Cardiovascular Surgery
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