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https://www.readbyqxmd.com/read/28636165/a-feasibility-and-safety-study-of-intracoronary-hemodilution-during-primary-coronary-angioplasty-in-order-to-reduce-reperfusion-injury-in-myocardial-infarction
#1
Michael McGarvey, Omar Ali, M Bilal Iqbal, Charles Ilsley, Joyce Wong, Carlo Di Mario, Simon Redwood, Tiffany Patterson, Dudley J Pennell, Paula Rogers, Miles Dalby
OBJECTIVES: We designed a pilot study to evaluate safety and feasibility of an inexpensive and simple approach to intracoronary hemodilution during primary angioplasty (PPCI) to reduce reperfusion injury. INTRODUCTION: Early revascularization in acute myocardial infarction decreases infarct size and improves outcomes. However, abrupt restoration of coronary flow results in myocardial reperfusion injury and increased final infarct size. Dilution of coronary blood during revascularization may help reduce this damage...
June 21, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28628621/time-course-of-vcam-1-expression-in-reperfused-myocardial-infarction-in-swine-and-its-relation-to-retention-of-intracoronary-administered-bone-marrow-derived-mononuclear-cells
#2
André Uitterdijk, Bianca C W Groenendijk, Charlotte Gorsse-Bakker, Anna Panasewicz, Stefan Sneep, Dennie Tempel, Esther H van de Kamp, Daphne Merkus, Willem J van der Giessen, Dirk J Duncker
BACKGROUND: Intracoronary infusion of autologous bone marrow-derived mononuclear cells (BMMNC), after acute myocardial infarction (AMI), has been shown to improve myocardial function. However, therapeutic efficacy is limited, possibly because cell retention rates are low, suggesting that optimization of cell retention might increase therapeutic efficacy. Since retention of injected BMMNC is observed only within infarcted, but not remote, myocardium, we hypothesized that adhesion molecules on activated endothelium following reperfusion are essential...
2017: PloS One
https://www.readbyqxmd.com/read/28626545/case-of-acute-st-segment-elevation-myocardial-infarction-in-infective-endocarditis-management-with-intra-coronary-stenting
#3
Ghulam Murtaza, Zia Ur Rahman, Puja Sitwala, Vatsal Ladia, Bhavesh Barad, Kais Albalbissi, Timir K Paul, Vijay Ramu
Embolic events from infective endocarditis can cause acute coronary syndrome. Mortality rate is high and optimal management might be different from those chosen in setting of classic atherosclerotic coronary artery disease. We present a case of 56-year-old male who had received 5 weeks of antibiotics for aortic valve endocarditis and developed acute ST segment elevation myocardial infarction in hospital settings. Interestingly, patient had recent left heart catheterization that was normal. This was recognized as embolic event from sterile vegetation...
June 7, 2017: Clinics and Practice
https://www.readbyqxmd.com/read/28622945/safety-of-intracoronary-provocative-testing-for-the-diagnosis-of-coronary-artery-spasm
#4
Giuseppe Ciliberti, Sreenivasa Rao Kondapally Seshasai, Giuseppe Ambrosio, Juan Carlos Kaski
AIMS: Systematic review of literature to evaluate safety of intracoronary (i.c.) pharmacologic testing with acetylcholine (ACh), or ergonovine (ERGO), to induce coronary artery spasm. METHODS AND RESULTS: Review of all relevant publications using MEDLINE and EMBASE databases yielded 10 publications, totalling 9,444 patients. Prevalence of provoked spasm varied from 2.3% to 54.7% of patients tested in the selected studies. The wide variability in prevalence was due to heterogeneity of study populations and provocation protocols...
June 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28616567/cyp2c19-variants-and-epoxyeicosatrienoic-acids-in-patients-with-microvascular-angina
#5
Tomonori Akasaka, Daisuke Sueta, Yuichiro Arima, Noriaki Tabata, Seiji Takashio, Yasuhiro Izumiya, Eiichiro Yamamoto, Kenichi Tsujita, Sunao Kojima, Koichi Kaikita, Ayami Kajiwara, Kazunori Morita, Kentaro Oniki, Junji Saruwatari, Kazuko Nakagawa, Seiji Hokimoto
BACKGROUND: Categorization as a cytochrome P450 (CYP) 2C19 poor metabolizer (PM) is reported to be an independent risk factor for cardiovascular disease. Epoxyeicosatrienoic acids (EETs) are metabolites of arachidonic acid by CYP2C19 epoxygenases and anti-inflammatory properties, especially in microvascular tissues. We examined the impact of CYP2C19 polymorphisms and EETs on the patients with microvascular angina (MVA) caused by coronary microvascular dysfunction. METHODS AND RESULTS: We examined CYP2C19 genotypes in patients with MVA (n = 81)...
June 2017: IJC Heart & Vasculature
https://www.readbyqxmd.com/read/28611782/long-term-percutaneous-coronary-intervention-outcomes-of-patients-with-chronic-kidney-disease-in-the-era-of-second-generation-drug-eluting-stents
#6
Wojciech Wańha, Damian Kawecki, Tomasz Roleder, Aleksandra Pluta, Kamil Marcinkiewicz, Beata Morawiec, Janusz Dola, Sylwia Gładysz, Tomasz Pawłowski, Grzegorz Smolka, Andrzej Ochała, Ewa Nowalany-Kozielska, Wojciech Wojakowski
BACKGROUND: The following registry (Katowice-Zabrze retrospective registry) aimed to assess the influence of a chronic kidney disease (CKD) on long-term clinical outcomes in patients undergoing percutaneous coronary intervention (PCI) using either first-generation (DES-I) or second-generation (DES-II) drug-eluting stents. METHODS: The study group consisted of 1,908 consecutive patients, of whom 331 (17.3%) had CKD. CKD was defined as an estimated glomerular filtration rate of <60 mL/min/m(2)...
February 2017: Cardiorenal Medicine
https://www.readbyqxmd.com/read/28606887/comparison-of-the-prognostic-value-of-non-ischemic-fractional-flow-reserve-using-intracoronary-versus-intravenous-adenosine
#7
Naga Venkata Pothineni, Mohan M Edupuganti, Ahmed Almomani, Jason Payne, Sameer Raina, Shailesh Fnu, Amjad Abualsuod, Joseph Wong, Barry F Uretsky, Abdul Hakeem
AIMS: Intracoronary adenosine (ICA) yields similar fractional flow reserve (FFR) results as the "gold standard" of intravenous adenosine (IVA). Whether they have similar prognostic significance is unknown. METHODS AND RESULTS: 576 patients with 787 lesions in whom PCI was deferred based on FFR >0.75 were studied. Primary outcome was the first major adverse cardiovascular event [MACE defined as death, myocardial infarction (MI), or target vessel revascularization (TVR)] and secondary outcome was a composite of MI and target vessel failure (TVF)...
June 13, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28592751/effect-of-ezetimibe-on-stabilization-and-regression-of-intracoronary-plaque%C3%A3-the-zipangu-study
#8
Yasunori Ueda, Takafumi Hiro, Atsushi Hirayama, Sei Komatsu, Hiroshi Matsuoka, Tadateru Takayama, Masaharu Ishihara, Takatoshi Hayashi, Satoshi Saito, Kazuhisa Kodama
BACKGROUND: Diminishing yellow color is associated with plaque stabilization. We assessed the hypothesis that a combination of ezetimibe and statin provides more effective plaque stabilization and regression than statin alone as assessed by plaque color.Methods and Results:Stable coronary artery disease patients (n=131) who underwent elective percutaneous coronary intervention and had yellow plaques were randomized to combination therapy (atorvastatin 10-20 mg and ezetimibe 10 mg/day; Group C) or statin monotherapy (atorvastatin 10-20 mg; Group M)...
June 8, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28592384/gender-differences-in-long-term-clinical-outcomes-and-prognostic-factors-in-patients-with-vasospastic-angina
#9
Da Hyon Lee, Taek Kyu Park, Choong Sil Seong, Hye Bin Gwag, A Young Lim, Min Seok Oh, Sung Woo Cho, Jeong Hoon Yang, Young Bin Song, Joo-Yong Hahn, Jin-Ho Choi, Sang Hoon Lee, Hyeon-Cheol Gwon, Seung-Hyuk Choi
BACKGROUND: Men are more likely to suffer from vasospastic angina (VSA) than women; however, gender differences in the long-term prognosis of VSA patients have not been fully elucidated. We sought to investigate clinical outcomes and predictive factors of VSA patients according to gender. METHODS: A total of 986 patients (838 men and 148 women) with a positive result on intracoronary ergonovine provocation test between January 2003 and December 2014 were analyzed...
May 26, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28592134/circulating-annexin-a5-levels-are-associated-with-carotid-intima-media-thickness-but-not-coronary-plaque-composition
#10
Mathias Burgmaier, Sebastian Reith, Leon Schurgers, Florian Kahles, Nikolaus Marx, Chris Reutelingsperger
BACKGROUND: Annexin A5 (anxA5) is involved in processes which are crucial in atherogenesis. However, anxA5's relationship with atherosclerotic lesion extension and plaque composition in high-risk patients with type 2 diabetes remains unclear. Thus, we characterized the association between circulating anxA5 levels with atherosclerotic burden and coronary plaque composition in diabetes mellitus patients. METHODS: Intima-media thickness was determined in 96 diabetes mellitus patients with stable coronary artery disease...
June 1, 2017: Diabetes & Vascular Disease Research
https://www.readbyqxmd.com/read/28583681/usefulness-of-intracoronary-brachytherapy-for-patients-with-resistant-drug-eluting-stent-restenosis
#11
Fernanda M Mangione, Tannas Jatene, Roza Badr Eslam, Brian A Bergmark, Jacob R Gallagher, Pinak B Shah, Laura Mauri, Jane A Leopold, Piotr S Sobieszczyk, David P Faxon, Kevin J Croce, Deepak L Bhatt, Phillip M Devlin
In-stent restenosis (ISR) remains a concern even in the drug-eluting stent (DES) era and carries a high risk of recurrence. Brachytherapy is being used as an alternative treatment for resistant ISR, yet the safety and efficacy of this approach has not been well studied. We analyzed the outcomes of 101 patients who underwent coronary brachytherapy for resistant DES ISR. Baseline demographic, clinical, procedural, and outcome data were collected by phone and from electronic records. Comorbidities and overt cardiovascular disease were highly prevalent...
May 10, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28577038/a-swine-model-of-percutaneous-intracoronary-ethanol-induced-acute-myocardial-infarction-and-ischemic-mitral-regurgitation
#12
Weiwei Shi, Bryant V McIver, Kanika Kalra, Eric L Sarin, Susan Schmarkey, Michael Duggan, Vinod H Thourani, Robert A Guyton, Muralidhar Padala
Ischemic mitral regurgitation (IMR) is a frequent complication after a myocardial infarction (MI), which doubles mortality. Transcatheter mitral repairs are emerging as alternative treatment options to open heart surgery for IMR, but animal models to test them are lacking. We report a percutaneous swine model of IMR. Seventeen swine were randomized to (group 1, n = 12) MI causing IMR, and (group 2, n = 5) controls. In group 1, MI was induced via percutaneous ethanol injection into the obtuse marginal branches of the left circumflex artery, resulting in ST elevating myocardial infarction...
June 2, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28570239/spontaneous-coronary-artery-dissection-after-pregnancy-as-first-manifestation-of-a-vascular-ehlers-danlos-syndrome
#13
Alberto F Cereda, Paolo A Canova, Francesco S Soriano
We report the case of a myocardial infarction in the post-partum period due to a spontaneous coronary artery dissection. The role of intracoronary imaging was critical: OCT imaging led us to formulate the right diagnosis.OCT imaging revealed a multiple coronary artery dissection in the left main non-detectable on angiography and in the circumflex, with evidence of coronary hematoma in the circumflex and left anterior descending. Beside dissection, OCT showed evidence of a thrombus near the coronary tear in the left main...
June 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28566292/effect-of-permanent-right-internal-mammary-artery-closure-on-coronary-collateral-function-and-myocardial-ischemia
#14
Michael Stoller, Christian Seiler
BACKGROUND: The objective of this study is to test the effect of permanent right internal mammary artery device closure on coronary collateral function and myocardial ischemia. METHODS AND RESULTS: This was a prospective, open-label clinical trial in 50 patients with coronary artery disease. The primary study end point was coronary collateral flow index as obtained during a 1-minute proximal right coronary artery (RCA) and left coronary artery balloon occlusion at baseline before and at follow-up examination 6 weeks after distal right internal mammary artery device closure...
June 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28565779/expression-of-integrin-linked-kinase-improves-cardiac-function-in-a-swine-model-of-myocardial-infarction
#15
Wen Lu, Jun Xie, Rong Gu, Biao Xu
Previous studies have described the beneficial effects of overexpressing integrin-linked kinase (ILK) after myocardial infarction (MI) in small animal models. However, the effects of ILK in pre-clinical large animals are not known. To move closer to clinical translation, we examined the effects of ILK gene transfer in a swine model of ischemic heart disease. Swine received percutaneous intracoronary injections of adenoviral vector expressing ILK (n=10) or empty ad-null (n=10) in the left anterior descending coronary artery (LAD) following LAD occlusion...
May 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28562383/treatment-options-for-stent-restenosis-insights-from-intracoronary-imaging-clinical-trials-and-registries
#16
Fernando Rivero, Javier Cuesta, Teresa Bastante, Marcos García-Guimaraes, Fernando Alfonso
Although drug-eluting stents (DES) have markedly reduced the incidence of stent restenosis (SR), the increased number and complexity of percutaneous coronary interventions performed worldwide explain the sustained prevalence of SR. Intracoronary imaging techniques remain essential tools to unravel the underlying mechanical causes potentially leading to SR. Current clinical trial data suggest that DES are the most effective therapy for the management of both bare-metal stents SR and DES-SR. In this setting, however, drug-eluting balloons represent a valid therapeutic alternative with the attractive advantage of not requiring the implantation of an additional metallic layer...
May 30, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28559656/local-intracoronary-infusion-of-glycoprotein-iib-iiia-inhibitors-via-a-perfusion-catheter-versus-intracoronary-guiding-catheter-injection-during-primary-percutaneous-coronary-intervention-a-pilot-observational-study
#17
Tarek Zaki, Salwa Labib, Maged El-Abbady, Wael El-Kilany, Ayman Mortada, Tarek Rashid, Hany Ragy, Adel El-Itreby, Wail Nammas
BACKGROUND: Glycoprotein IIb IIIa inhibitors improved short- and long-term outcome when added to primary percutaneous coronary intervention (PPCI) in patients with ST-segment-elevation myocardial infarction (STEMI). We hypothesized that intracoronary eptifibatide infusion via a perfusion catheter improves angiographic and clinical outcome of patients with STEMI undergoing PPCI, versus conventional intracoronary bolus injection. METHODS: Prospectively, we enrolled 80 patients with acute STEMI and thrombolysis in myocardial infarction (TIMI) thrombus grade ≥ 2...
May 2017: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/28544741/diagnostic-accuracy-of-a-hybrid-approach-of-instantaneous-wave-free-ratio-and-fractional-flow-reserve-using-high-dose-intracoronary-adenosine-to-characterize-intermediate-coronary-lesions-results-of-the-pals-practical-assessment-of-lesion-severity-prospective
#18
Fernando Rivero, Javier Cuesta, Teresa Bastante, Amparo Benedicto, Marcos García-Guimaraes, Manuel Fuentes-Ferrer, Teresa Alvarado, Fernando Alfonso
OBJECTIVES: We sought to investigate the diagnostic accuracy of instantaneous wave-free ratio (iFR) and high-dose intracoronary adenosine fractional flow reserve (IC-FFR) compared with classical intravenous adenosine fractional flow reserve (IV-FFR) to assess coronary stenosis severity. The usefulness of two hybrid strategies combining iFR and high-dose IC-FFR was also evaluated. BACKGROUND: Physiological assessment of intermediate coronary stenoses to guide revascularization is currently recommended...
May 22, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28540216/impact-of-plaque-characteristics-on-the-degree-of-functional-stenosis
#19
REVIEW
Pedro de Araújo Gonçalves, Alexandre Hideo-Kajita, Hector Manuel Garcia-Garcia
Coronary CT angiography (CCTA) is mainly regarded as a gatekeeper for invasive coronary angiography, in face of its widely recognized value to noninvasively rule out significant coronary stenosis. Nevertheless, it is also increasingly recognized that this noninvasive modality can depict several atherosclerotic plaque features and quantify total coronary plaque burden. This opens a new field for cardiac CT, since these atherosclerotic features beyond stenosis severity have been correlated with the degree of functional significance, and are the focus of the present manuscript...
April 2017: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/28539564/improvement-of-local-cell-delivery-using-helix-transendocardial-delivery-catheter-in-a-porcine-heart
#20
Yoshiaki Mitsutake, Wook Bum Pyun, Didier Rouy, Cheryl Wong Po Foo, Simon H Stertzer, Peter Altman, Fumiaki Ikeno
Cardiac regeneration strategies using stem cells have shown variable and inconsistent results with respect to patient cardiac function and clinical outcomes. There has been increasing consensus that improving the efficiency of delivery may improve results. The Helix transendocardial delivery system (BioCardia Inc.) has been developed to enable percutaneous transendocardial biotherapeutic delivery. Therefore, we evaluated cell retention using this unique system compared with direct transepicardial injection and intracoronary infusion in an animal model...
May 23, 2017: International Heart Journal
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