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https://www.readbyqxmd.com/read/28207567/relationship-between-r-wave-peak-time-and-no-reflow-in-st-elevation-myocardial-infarction-treated-with-a-primary-percutaneous-coronary-intervention
#1
Metin Çağdaş, Süleyman Karakoyun, İbrahim Rencüzoğullari, Yavuz Karabağ, Mahmut Yesin, Mahmut Uluganyan, Mustafa O Gürsoy, İnanç Artaç, Doğan İliş, Süleyman Ç Efe, Onur Taşar
Coronary no-reflow (NR) is observed in nearly half of ST segment elevation myocardial infarction (STEMI) patients who undergo a primary percutaneous coronary intervention (pPCI) despite epicardial coronary vessel patency. Several methods used to define NR include thrombolysis in myocardial infarction grade, corrected thrombolysis in myocardial infarction frame count, myocardial blush grade, ST-segment resolution, contrast echocardiography, and MRI. The aim of our study was to evaluate the relationship between NR and R-wave peak time (RWPT) measured from infarct-related artery leads METHOD: We enrolled 282 consecutive STEMI patients treated with pPCI in Kafkas University Hospital from January 2014 to January 2015...
February 15, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28192257/anti-thrombotic-and-pro-fibrinolytic-effects-of-levosimendan-in-human-endothelial-cells-in-vitro
#2
Konstantin A Krychtiuk, Christoph Kaun, Philipp J Hohensinner, Stefan Stojkovic, Jacqueline Seigner, Stefan P Kastl, Andreas Zuckermann, Wolfgang Eppel, Sabine Rauscher, Rainer de Martin, Gerald Maurer, Kurt Huber, Johann Wojta, Walter S Speidl
AIMS: Levosimendan is an inodilator for the treatment of acute decompensated heart failure (HF). Data from clinical studies suggest that levosimendan is particularly effective in HF due to myocardial infarction. After acute revascularization, no reflow-phenomenon is a common complication that may lead to pump failure and cardiogenic shock. Our aim was to examine whether levosimendan interferes with the pro-thrombotic phenotype of activated endothelial cells in vitro. METHODS: Human heart microvascular endothelial cells (HHMEC) and human umbilical vein endothelial cells (HUVEC) were treated with interleukin-1β (IL-1β) (200U/mL) or thrombin (5U/mL) and co-treated with or without levosimendan (0...
February 9, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/28183461/management-of-no-reflow-phenomenon-in-the-catheterization-laboratory
#3
REVIEW
Shereif H Rezkalla, Rachel V Stankowski, Jennifer Hanna, Robert A Kloner
At the conclusion of a primary percutaneous coronary intervention for ST-segment elevation myocardial infarction, and after the cardiologist makes certain that there is no residual stenosis following stenting, assessment of coronary flow becomes the top priority. The presence of no-reflow is a serious prognostic sign. No-reflow can result in poor healing of the infarct and adverse left ventricular remodeling, increasing the risk for major adverse cardiac events, including congestive heart failure and death...
February 13, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28180196/serial-transthoracic-coronary-doppler-shows-complete-reversibility-of-microvascular-obstruction-pattern-at-one-month-after-reperfused-acute-myocardial-infarction
#4
Camelia Diana Ober, Mihai Claudiu Ober, Adrian Corneliu Iancu
: "No reflow" phenomenon is a common complication with significant prognostic repercussions after reperfused acute myocardial infarction. Previous studies have shown the feasibility and prognostic significance of coronary microcirculation assessment by transthoracic Doppler of left anterior descending artery (LAD). The aim of the study was to evaluate the time course of the coronary microcirculation status after acute anterior myocardial infarction reperfused by primary angioplasty with stent on LAD...
January 31, 2017: Medical Ultrasonography
https://www.readbyqxmd.com/read/28177528/correlation-of-platelet-to-lymphocyte-ratio-plr-and-neutrophil-to-lymphocyte-ratio-nlr-with-timi-frame-count-in-stemi
#5
Hossein Vakili, Mahin Shirazi, Mahsa Charkhkar, Isa Khaheshi, Mehdi Memaryan, Mohammadreza Naderian
BACKGROUND: Impaired coronary artery reflow after primary percutaneous coronary intervention (PPCI) in patients with ST-segment elevation myocardial infarction has been associated with post-intervention adverse effects. Thus finding an easily achievable index would be of great value to predict no-reflow phenomenon. In this regard, Platelet-to -Lymphocyte Ratio (PLR) and Neutrophil-to-Lymphocyte Ratio (NLR) have been introduced. In the present study, we aimed to investigate correlation of PLR and NLR with Thrombolysis In Myocardial Infarction (TIMI) frame count...
February 8, 2017: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28135002/ischemia-reperfusion
#6
Theodore Kalogeris, Christopher P Baines, Maike Krenz, Ronald J Korthuis
Ischemic disorders, such as myocardial infarction, stroke, and peripheral vascular disease, are the most common causes of debilitating disease and death in westernized cultures. The extent of tissue injury relates directly to the extent of blood flow reduction and to the length of the ischemic period, which influence the levels to which cellular ATP and intracellular pH are reduced. By impairing ATPase-dependent ion transport, ischemia causes intracellular and mitochondrial calcium levels to increase (calcium overload)...
December 6, 2016: Comprehensive Physiology
https://www.readbyqxmd.com/read/28123475/clinical-effect-of-preoperative-high-dose-atorvastatin-against-no-reflow-after-pci
#7
Wenbo Liu, Zhipeng Zou, Haipeng Jiang, Qiang Li, Fangming Guo, Zhen Wang, Hongguang Zhu
The aim of the present study was to evaluate the use of preoperative high-dose atorvastatin to prevent the no-reflow phenomenon after percutaneous coronary intervention (PCI). A total of 138 patients with ST-segment elevation myocardial infarction, admitted from March 2014 to January 2015, were enrolled and randomly divided into 3 groups of 46 individuals each. The groups included a control group in which patients were not treated with atorvastatin before PCI; a conventional-dose atorvastatin treatment group in which patients received a single dose of 20 mg at bedtime one day prior to PCI; and a high-dose atorvastatin treatment group in which patients were treated with 40 mg divided in two doses the day before PCI...
January 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28108128/delayed-therapeutic-hypothermia-protects-against-the-myocardial-no-reflow-phenomenon-independently-of-myocardial-infarct-size-in-a-rat-ischemia-reperfusion-model
#8
Wangde Dai, Sharon Hale, Robert A Kloner
BACKGROUND: Adjunctive therapies, given in addition to reperfusion to reduce myocardial infarct size, have been disappointing based on clinical trials. New therapeutic targets independent of infarct size modification are needed. The no-reflow phenomenon occurs commonly after the infarct-related coronary artery is opened and predicts poor clinical outcome. We investigated the effects of a single application of delayed (post-reperfusion) therapeutic hypothermia (TH) in a rat model of coronary artery occlusion/reperfusion...
January 12, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28104481/identification-of-the-potentially-arrhythmogenic-substrate-in-the-acute-phase-of-st-segment-elevation-myocardial-infarction
#9
Diego Penela, Juan Acosta, David Andreu, Jose T Ortiz, Xavier Bosch, Rosario J Perea, Teresa M de Caralt, Juan Fernández-Armenta, David Soto, Susana Prat, Roger Borràs, Lluis Mont, Vanessa Hervas, Manuel Morales, Wladimiro Jiménez, Aurea Mira, Jim Donnelly, Okan Ekinci, Luis Lasalvia, Antonio Berruezo
BACKGROUND: Predicting sudden cardiac death risk in the first months after ST-segment elevation myocardial infarction (STEMI) remains challenging. OBJECTIVE: The purpose of this study was to investigate the ability of late gadolinium enhancement cardiac magnetic resonance (LGE-CMR) to identify the potentially arrhythmogenic substrate and its temporal evolution after STEMI. METHODS: One hundred consecutive patients with a first STEMI were included...
January 17, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28100342/-the-effect-on-myocardial-perfusion-and-clinical-outcome-of-intracoronary-nicorandil-injection-prior-to-percutaneous-coronary-intervention-in-st-segment-elevation-myocardial-infarction
#10
Z Q Wang, M X Chen, D L Liu, W X Zheng, X Z Cao, H Chen, M F Huang, Z R Luo
Objective: To investigate the effect of intracoronary administration of nicorandil prior to primary percutaneous coronary intervention (PPCI) on myocardial perfusion and short-term clinical outcomes in patients with ST-segment elevation myocardial infarction (STEMI). Methods: A total of 158 patients with STEMI undergoing PPCI from January 2014 to December 2015 in Fuzhou General Hospital were enrolled consecutively in this prospective controlled randomized trial. Patients were assigned into three groups with random number table: the nicorandil group (patients received intracoronary administration of 6 mg nicorandil after guide wire or balloon successfully crossed the target lesion, n=53), the nitroglycerin group (patients received intracoronary administration of 300 μg nitroglycerin after after guide wire or balloon successfully crossed the target lesion, n=52) and the control group(patients received routine treatment, n=53)...
January 25, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28088914/diverse-functions-and-mechanisms-of-pericytes-in-ischemic-stroke
#11
Shuai Yang, Huijuan Jin, Yiyi Zhu, Yan Wan, Lingqiang Zhu, Bo Hu
Pericytes are mural cells embedded in the basement membrane of microvessels. Because of such a unique position in the blood-brain barrier (BBB) and neurovascular unit (NVU), they receive, orchestrate and process signals from their neighboring cells to generate diverse neurovascular functions, including regulation of capillary hemodynamics, BBB permeability, clearance of toxic metabolites, angiogenesis, neuroinflammation and stem cell activity. During the different stages of ischemic stroke, pericytes play different roles: 1) On the hyperacute phase of stroke, pericytes constriction and death may be a cause of the no-reflow phenomenon in brain capillaries; 2) During the acute phase, pericytes detach from microvessels and participate in inflammatory-immunological response, resulting in the BBB damage and brain edema...
January 12, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28087914/-atorvastatin-improves-reflow-after-percutaneous-coronary-intervention-in-patients-with-acute-st-segment-elevation-myocardial-infarction-by-decreasing-serum-uric-acid-level
#12
Ling Yan, Lu Ye, Kun Wang, Jie Zhou, Chunjia Zhu
Objective: To investigate the effect of atorvastatin on reflow in patients with acute ST-segment elevation myocardial infarction (STEMI) after percutaneous coronary intervention (PCI) and its relation to serum uric acid levels. Methods: One hundred and fourteen STEMI patients undergoing primary PCI were enrolled and randomly divided into two groups:55 cases received oral atorvastatin 20 mg before PCI (routine dose group) and 59 cases received oral atorvastatin 80 mg before PCI (high dose group). According to the initial serum uric acid level, patients in two groups were further divided into normal uric acid subgroup and hyperuricemia subgroup...
May 25, 2016: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28057364/deferred-versus-conventional-stent-implantation-in-patients-with-acute-st-segment-elevation-myocardial-infarction-an-updated-meta-analysis-of-10-studies
#13
Joo Myung Lee, Tae-Min Rhee, Haseong Chang, Chul Ahn, Taek Kyu Park, Jeong Hoon Yang, Young Bin Song, Seung-Hyuk Choi, Hyeon-Cheol Gwon, Joo-Yong Hahn
BACKGROUND: We sought to evaluate safety and efficacy of the deferred stenting versus immediate stent implantation of infarct-related arteries in patients with acute ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI). METHODS: A meta-analysis using random-effects models were conducted. The primary outcome, major adverse cardiac events (MACE), was a composite of all-cause mortality, myocardial infarction (MI), any unplanned target vessel revascularization (TVR), and hospitalization due to cardiac cause...
March 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28029214/long-term-outcomes-of-rotational-atherectomy-for-the-percutaneous-treatment-of-chronic-total-occlusions
#14
Lorenzo Azzalini, Rustem Dautov, Soledad Ojeda, Antonio Serra, Susanna Benincasa, Barbara Bellini, Francesco Giannini, Jorge Chavarría, Livia L Gheorghe, Manuel Pan, Mauro Carlino, Antonio Colombo, Stéphane Rinfret
OBJECTIVES: To study the long-term outcomes of rotational atherectomy (RA) for chronic total occlusion (CTO) percutaneous coronary intervention (PCI). BACKGROUND: There is little evidence on the incidence, procedural results and long-term outcomes of RA for CTO PCI. METHODS: This registry included data from consecutive patients undergoing CTO PCI at four specialized centers. Major adverse cardiac events (MACE: cardiac death, target-vessel myocardial infarction and ischemia-driven target-vessel revascularization) on follow-up were the primary endpoint...
December 28, 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28000723/plasma-dpp4-activity-is-associated-with-no-reflow-and-major-bleeding-events-in-chinese-pci-treated-stemi-patients
#15
Jing Wei Li, Yun Dai Chen, Wei Ren Chen, Jing Jing, Jie Liu, Yong Qiang Yang
Dipeptidyl peptidase-4 (DPP4) is an important regulator of incretins and inflammation, and it is involved in the pathophysiological process of myocardial infarction (MI). This study investigated the role of plasma DPP4 activity (DPP4a) in patients with ST-segment elevation myocardial infarction (STEMI) who had undergone percutaneous coronary intervention (PCI). We recruited 747 consecutive PCI-treated STEMI patients from a tertiary referral center from January 2014 to October 2015. The outcomes of interest were the rates of no-reflow, in-hospital major adverse cardiac or cerebrovascular events (iMACCE), in-hospital complications (IHC) and in-hospital major bleeding...
December 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27982267/in-lab-upfront-use-of-tirofiban-may-reduce-the-occurrence-of-no-reflow-during-primary-percutaneous-coronary-intervention-a-pilot-randomized-study
#16
Igor Matos Lago, Gustavo Caires Novaes, André Vannucchi Badran, Rafael Brolio Pavão, Ricardo Barbosa, Geraldo Luiz de Figueiredo, Moysés de Oliveira Lima, Jorge Luiz Haddad, André Schmidt, José Antônio Marin
Background: Despite successful opening of culprit coronary artery, myocardial reperfusion does not always follows primary percutaneous coronary intervention (PPCI). Glycoprotein IIb/IIIa inhibitors are used in the treatment of no-reflow (NR), but their role to prevent it is unproven. Objective: To evaluate the effect of in-lab administration of tirofiban on the incidence of NR in ST-elevation myocardial infarction (STEMI) treated with PPCI. Methods: STEMI patients treated with PPCI were randomized (24 tirofiban and 34 placebo) in this double-blinded study to assess the impact of intravenous tirofiban on the incidence of NR after PPCI according to angiographic and electrocardiographic methods...
November 2016: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/27970315/tct-147-local-intracoronary-delivery-of-eptifibatide-plus-verapamil-via-thrombus-aspiration-catheter-to-prevent-no-reflow-in-acute-st-elevation-myocardial-infarction-patients-with-large-thrombus-burden
#17
Mohamed Hamza, Mohamed Shehata
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27969590/tct-250-long-term-clinical-outcomes-of-transient-and-persistent-no-reflow-following-percutaneous-coronary-intervention-pci-insights-from-a-multi-center-australian-registry
#18
Stavroula Papapostolou, Nick Andrianopoulos, Angela Brennan, Andrew Ajani, David Clark, Christopher Reid, Gishel New, Martin Sebastian, Laura Selkrig, Anthony Dart, Stephen Duffy, William Chan
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27891513/clinic-predictive-factors-for-insufficient-myocardial-reperfusion-in-st-segment-elevation-myocardial-infarction-patients-treated-with-selective-aspiration-thrombectomy-during-primary-percutaneous-coronary-intervention
#19
Jinfan Tian, Yue Liu, Xiantao Song, Min Zhang, Feng Xu, Fei Yuan, Shuzheng Lyu
Background. Insufficient data are available on the potential benefit of selective aspiration and clinical predictors for no-reflow in STEMI patients undergoing primary percutaneous coronary intervention (PPCI) adjunct with aspiration thrombectomy. Objective. The aim of our study was to investigate clinical predictors for insufficient reperfusion in patients with high thrombus burden treated with PPCI and manual aspiration thrombectomy. Methods. From January 2011 till December 2015, 277 STEMI patients undergoing manual aspiration thrombectomy and PPCI were selected and 202 patients with a Thrombolysis in Myocardial Infarction (TIMI) thrombus grade 4~5 were eventually involved in our study...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27869849/optical-coherence-tomography-imaging-of-capillary-reperfusion-after-ischemic-stroke
#20
Jonghwan Lee, Yasemin Gursoy-Ozdemir, Buyin Fu, David A Boas, Turgay Dalkara
Although progress has been made for recanalization therapies after ischemic stroke, post-treatment imaging studies show that tissue reperfusion cannot be attained despite satisfactory recanalization in a significant percentage of patients. Hence, investigation of microcirculatory changes in both surface and deep cortical levels after ischemia reperfusion is important for understanding the post-stroke blood flow dynamics. In this study, we applied optical coherence tomography (OCT) imaging of cerebral blood flow for the quantification of the microcirculatory changes...
November 20, 2016: Applied Optics
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