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https://www.readbyqxmd.com/read/28095482/an-increase-in-mean-platelet-volume-platelet-count-ratio-is-associated-with-vascular-access-failure-in-hemodialysis-patients
#1
Dong Ho Shin, So Yon Rhee, Hee Jung Jeon, Ji-Young Park, Shin-Wook Kang, Jieun Oh
After stenosis of arteriovenous vascular access in hemodialysis patients, platelets play a crucial role in subsequent thrombus formation, leading to access failure. In a previous study, the mean platelet volume (MPV)/platelet count ratio, but not MPV alone, was shown to be an independent predictor of 4-year mortality after myocardial infarction. However, little is known about the potential influence of MPV/platelet count ratio on vascular access patency in hemodialysis patients. A total of 143 patients undergoing routine hemodialysis were recruited between January 2013 and February 2016...
2017: PloS One
https://www.readbyqxmd.com/read/28093693/a-simple-post-mortem-room-angiography-method-for-the-investigation-of-traumatic-basal-subarachnoid-hemorrhage
#2
Christopher P Johnson, Mike Murphy, George A Johnson, Stephen M Wills, Jonathan E Medcalf
Identifying the site of vascular bleeding in fatal cases of traumatic basal subarachnoid hemorrhage (TBSAH) is important, but can be very difficult to achieve when there is extensive blood clot in the posterior cranial fossa. Post mortem angiography in these circumstances has been reported previously but with mixed results, and is rarely used in current practice within the United Kingdom. We have developed a simple and effective post mortem angiography method, using fluoroscopy and clear modern contrast medium, suitable for use in the autopsy room...
January 17, 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/28092205/effect-of-polidocanol-foam-administration-into-rat-peripheral-veins-on-pulmonary-parenchyma
#3
Melissa A de Moraes Silva, Rimarcs G Ferreira, Seleno G de Jesus-Silva, Rodolfo S Cardoso, Fausto Miranda
Background Sclerotherapy has been gaining increased acceptance and popularity as an effective therapy for the treatment of varicose veins. This attention has fed growing interest into the safety and potential complications of this procedure. There is no evidence of pulmonary complications from foam sclerotherapy in humans; however, animal studies have shown possible damage. The aim of this study is to show the changes in rat pulmonary parenchyma after the injection of 1% polidocanol Tessari foam into the peripheral vein using histological analysis of the inflammatory and fibrosis processes...
January 1, 2017: Phlebology
https://www.readbyqxmd.com/read/28089999/impact-of-impaired-renal-function-in-patients-with-severely-calcified-coronary-lesions-treated-with-orbital-atherectomy
#4
Michael S Lee, Evan Shlofmitz, Gentian Lluri, Richard A Shlofmitz
OBJECTIVES: We evaluated the clinical outcomes of patients with chronic kidney disease (CKD) who underwent orbital atherectomy for severe coronary artery calcification (CAC) prior to stent implantation. BACKGROUND: Percutaneous coronary intervention (PCI) of lesions with severe CAC is associated with increased rates of adverse clinical events. Patients with CKD are at increased risk for atherosclerotic cardiovascular disease, including vascular calcification, and have worse outcomes after PCI...
January 15, 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28081310/a-simple-risk-score-in-acute-st-elevation-myocardial-infarction-modified-acef-age-creatinine-and-ejection-fraction-score
#5
Arzu Kalaycı, Vecih Oduncu, Çetin Geçmen, Selim Topcu, Can Yücel Karabay, İbrahim Akın İzgi, Cevat Kırma
BACKGROUND/AIM: The aim of this study was to evaluate if the modified ACEF (age, creatinine, and ejection fraction) score is a predictor of major adverse cardiac and cerebrovascular events during 1 year of follow-up in patients with ST-segment elevation myocardial infarction (STEMI) who underwent primary percutaneous coronary intervention (PCI). MATERIALS AND METHODS: We retrospectively enrolled 1632 consecutive patients who were admitted to our emergency department diagnosed with STEMI within 12 h of chest pain and treated with primary PCI...
December 20, 2016: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28076020/structure-of-the-medullary-veins-of-the-cerebral-hemisphere-and-related-disorders
#6
Toshiaki Taoka, Akio Fukusumi, Toshiteru Miyasaka, Hisashi Kawai, Toshiki Nakane, Kimihiko Kichikawa, Shinji Naganawa
Deep medullary veins drain into subependymal veins with four convergence zones and show parallel distribution patterns adjacent to the body or inferior horn and a radial pattern in the frontal horn or trigon of the lateral ventricle. As white matter imaging develops such as diffusion tensor imaging or susceptibility-weighted imaging, requirements for understanding of white matter structures are increasing, not only for understanding of neuronal tracts but also for that of other structures including the fine anatomy of white matter vessels...
January 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28069828/lpa1-receptor-mediated-thromboxane-a2-release-is-responsible-for-lysophosphatidic-acid-induced-vascular-smooth-muscle-contraction
#7
Péter Tibor Dancs, Éva Ruisanchez, Andrea Balogh, Cecília Rita Panta, Zsuzsanna Miklós, Rolf M Nüsing, Junken Aoki, Jerold Chun, Stefan Offermanns, Gábor Tigyi, Zoltán Benyó
Lysophosphatidic acid (LPA) has been recognized recently as an endothelium-dependent vasodilator, but several lines of evidence indicate that it may also stimulate vascular smooth muscle cells (VSMCs), thereby contributing to vasoregulation and remodeling. In the present study, mRNA expression of all 6 LPA receptor genes was detected in murine aortic VSMCs, with the highest levels of LPA1, LPA2, LPA4, and LPA6 In endothelium-denuded thoracic aorta (TA) and abdominal aorta (AA) segments, 1-oleoyl-LPA and the LPA1-3 agonist VPC31143 induced dose-dependent vasoconstriction...
January 9, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28069611/bioresorbable-vascular-scaffolds-for-the-treatment-of-chronic-total-occlusions-an-international-multicenter-registry
#8
Satoru Mitomo, Toru Naganuma, Yusuke Fujino, Hiroyoshi Kawamoto, Sandeep Basavarajaiah, Michael Pitt, Wei-Hsian Yin, Damras Tresukosol, Antonio Colombo, Sunao Nakamura
BACKGROUND: There are only limited studies reporting clinical outcomes after bioresorbable vascular scaffold (BVS; Absorb; Abbott Vascular, Santa Clara, CA) implantation for coronary chronic total occlusions (CTO). The aim of this study was to evaluate the real-world feasibility and safety of BVS implantation for the treatment of CTO. METHODS AND RESULTS: We retrospectively evaluated CTO cases treated with BVS from a multicenter registry. The primary end point was target lesion failure defined as a composite of cardiac death, target vessel myocardial infarction, and clinically driven target lesion revascularization...
January 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28067198/outcomes-of-patients-treated-with-durable-polymer-platinum-chromium-everolimus-eluting-stents-a-meta-analysis-of-randomized-trials
#9
Salvatore Cassese, Gjin Ndrepepa, Robert A Byrne, Sebastian Kufner, Erion Xhepa, Antoinette de Waha, Tobias Rheude, Roisin Colleran, Daniele Giacoppo, Yukinori Harada, Karl-Ludwig Laugwitz, Heribert Schunkert, Massimiliano Fusaro, Adnan Kastrati
AIMS: The durable-polymer platinum-chromium everolimus-eluting stent (PtCr-EES) is a new- generation drug-eluting stent (DES) with a platinum-enriched metallic platform developed to improve the percutaneous treatment of patients with coronary artery disease. We sought to investigate the performance of durable-polymer PtCr-EES versus other new-generation DES. METHODS AND RESULTS: We undertook a meta-analysis of trials, in which patients receiving percutaneous coronary intervention (PCI) were randomly assigned to durable-polymer PtCr-EES versus other new-generation DES (other DES)...
January 10, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28064303/popliteal-artery-pseudoaneurysm-successfully-treated-with-amplatzer-vascular-plug
#10
K W Liew, B D K Leong
Popliteal artery pseudoaneurysm is uncommon. They usually result from penetrating or blunt trauma, arterial reconstructive surgery, invasive diagnostic or surgical orthopedic procedures. They can cause arterial thrombosis and limb ischeamia. We report a 53 year old Chinese gentleman with popliteal artery pseudoaneurysm who presented with right lower limb numbness and paralysis in toes extension. He gave a history of acupuncture treatment around the popliteal fossa of the affected limb. Clinical examination revealed a pulsatile mass in the popliteal fossa...
October 2016: Medical Journal of Malaysia
https://www.readbyqxmd.com/read/28062430/rare-and-unusual-case-of-polyarteritis-nodosa-involving-the-gastrointestinal-tract-leading-to-bowel-gangrene
#11
Arvind Vashdev Jagwani, Nik Qisti Fathi, Ruhi Fadzlyana Jailani, Andee Dzulkarnaen Zakaria
Polyarteritis nodosa (PAN) is a systemic necrotising vasculitis preferentially targeting medium-sized arteries and not related with glomerulonephritis or small vessel involvement. Clinical manifestations of PAN are multisystem. The gastrointestinal, renal, cardiac, musculoskeletal, skin and central nervous systems may be involved. The aetiology remains unknown, and the ensuing vasculitis may lead to aneurysm formation and thrombosis in any organs of the body with resultant ischaemia. PAN of the intestines is a relatively common manifestation of this disease but rarely causes bowel ischaemia resulting in necrosis...
January 6, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28062139/efficacy-and-safety-of-everolimus-and-zotarolimus-eluting-stents-versus-first-generation-drug-eluting-stents-in-patients-with-diabetes-a-meta-analysis-of-randomized-trials
#12
Chirag Bavishi, Usman Baber, Sadik Panwar, Stefania Pirrotta, George D Dangas, Pedro Moreno, Jacqueline Tamis-Holland, Annapoorna S Kini, Samin K Sharma
INTRODUCTION: Patients with diabetes and coronary artery disease remain at high risk for adverse cardiovascular events after percutaneous coronary intervention. The efficacy and safety of the various drug-eluting stents (DES) in patients with diabetes is unclear. METHODS: Randomized controlled trials comparing first-generation DES [paclitaxel-eluting stents (PES) and sirolimus-eluting stents (SES)] with everolimus-eluting stents (EES) and zotarolimus-eluting stents (ZES) in diabetic patients were systematically searched...
December 27, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28059166/mean-platelet-volume-and-arterial-stiffness-clinical-relationship-and-common-genetic-variability
#13
Marina Panova-Noeva, Natalie Arnold, M Iris Hermanns, Jürgen H Prochaska, Andreas Schulz, Henri M Spronk, Harald Binder, Norbert Pfeiffer, Manfred Beutel, Stefan Blankenberg, Tanja Zeller, Johannes Lotz, Thomas Münzel, Karl J Lackner, Hugo Ten Cate, Philipp S Wild
Vessel wall stiffening is an important clinical parameter, but it is unknown whether platelets, key elements in the pathogenesis of arterial thrombosis, are associated with arterial stiffness. The present studies sought to determine whether mean platelet volume (MPV), a potential marker of platelet activation, is linked to vascular elasticity as assessed by the augmentation index (AIx), in 15,010 individuals from the population-based Gutenberg Health Study. Multivariable analysis showed that MPV in both males (β 0...
January 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28058211/organ-transplantation-and-drug-eluting-stents-perioperative-challenges
#14
REVIEW
Aparna Dalal
Patients listed for organ transplant frequently have severe coronary artery disease (CAD), which may be treated with drug eluting stents (DES). Everolimus and zotarolimus eluting stents are commonly used. Newer generation biolimus and novolimus eluting biodegradable stents are becoming increasingly popular. Patients undergoing transplant surgery soon after the placement of DES are at increased risk of stent thrombosis (ST) in the perioperative period. Dual antiplatelet therapy (DAPT) with aspirin and a P2Y12 inhibitor such as clopidogrel, prasugrel and ticagrelor is instated post stenting to decrease the incident of ST...
December 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/28058104/severe-lower-limb-ischemia-by-massive-arterial-thrombosis-revealing-an-acute-myeloid-leukemia-needing-for-leg-amputation-clinical-and-emotional-aspects-related-to-the-communication-with-the-patient-and-his-family
#15
Paolo D'Angelo, Calogero Taormina, Clara Mosa, Floriana Di Marco, Fabrizio Valentino, Angela Trizzino, Paola Guadagna, Francesco Talarico
Large vessel thrombosis is a very rare clinical presentation of acute leukemia, generally associated with coagulopathy, usually characteristic of acute promyelocytic leukemia. A 13- year-old boy with a previously undiagnosed acute myeloid leukemia was referred to our hospital with acute ischemia of the right lower limb due to occlusion of the right external iliac artery, treated with emergency double surgical thromboembolectomy and chemotherapy. The thrombotic complication resulted in leg amputation. Now the boy is well in complete remission, with a good social integration and quality of life, 30 months after completing treatment...
November 17, 2016: Pediatric Reports
https://www.readbyqxmd.com/read/28057794/purinergic-signaling-in-the-cardiovascular-system
#16
REVIEW
Geoffrey Burnstock
There is nervous control of the heart by ATP as a cotransmitter in sympathetic, parasympathetic, and sensory-motor nerves, as well as in intracardiac neurons. Centers in the brain control heart activities and vagal cardiovascular reflexes involve purines. Adenine nucleotides and nucleosides act on purinoceptors on cardiomyocytes, AV and SA nodes, cardiac fibroblasts, and coronary blood vessels. Vascular tone is controlled by a dual mechanism. ATP, released from perivascular sympathetic nerves, causes vasoconstriction largely via P2X1 receptors...
January 6, 2017: Circulation Research
https://www.readbyqxmd.com/read/28057640/murine-systemic-thrombophilia-and-hemolytic-uremic-syndrome-from-a-factor-h-point-mutation
#17
Yoshiyasu Ueda, Imran Mohammed, Delu Song, Damodar Gullipalli, Lin Zhou, Sayaka Sato, Yuan Wang, Shuchi Gupta, Zhongjian Cheng, Hong Wang, Jialing Bao, Yingying Mao, Lawrence Brass, X Long Zheng, Takashi Miwa, Matthew Palmer, Joshua Dunaief, Wen-Chao Song
Complement plays a key role in host defense but its dysregulation can cause autologous tissue injury. Complement activation is normally controlled by regulatory proteins including factor H (FH) in plasma and membrane cofactor protein (MCP) on the cell surface. Mutations in FH and MCP are linked to atypical hemolytic uremic syndrome, a type of thrombotic microangiopathy (TMA) that causes renal failure in patients. We describe here that disruption of FH function on the cell surface can also lead to disseminated complement-dependent macrovascular thrombosis...
January 5, 2017: Blood
https://www.readbyqxmd.com/read/28056809/is-the-concomitant-use-of-clopidogrel-and-proton-pump-inhibitors-still-associated-with-increased-adverse-cardiovascular-outcomes-following-coronary-angioplasty-a-systematic-review-and-meta-analysis-of-recently-published-studies-2012-2016
#18
Pravesh Kumar Bundhun, Abhishek Rishikesh Teeluck, Akash Bhurtu, Wei-Qiang Huang
BACKGROUND: Controversies were previously observed with the concomitant use of clopidogrel and Proton Pump Inhibitors (PPIs), especially omeprazole, following coronary angioplasty. Even though several studies showed no interaction between clopidogrel and PPIs, questions have been raised about the decrease in antiplatelet effects of clopidogrel with PPIs. A previously published meta-analysis showed concomitant use of clopidogrel and PPIs to be associated with higher adverse cardiovascular outcomes...
January 5, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28056282/-diagnostic-value-of-clot-burden-score-of-susceptibility-vessel-sign-in-arterial-thrombosis-of-acute-ischemic-stroke-and-its-association-with-prognosis
#19
Y Huang, W L Mei, H Q Liu, Y L Li, Z Z Chen, D D Li, J W Zhang
Objective: To analysis the value of susceptibility vessel sign (SVS) in susceptibility weighted imaging (SWI) in detecting thrombogenesis in middle cerebral artery (MCA) and its association with clinical prognosis. Methods: From December 2014 to December 2015 in People's Hospital of Zhengzhou University, we retrospectively examined clinical, imaging and experimental datafrom 104 consecutive patients with acute ischemic strokeand compared the consistency of detecting thrombus between SWI and magnetic resonance angiography (MRA) using Kappa analysis...
January 3, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28054837/radiosurgery-alters-the-endothelial-surface-proteome-externalized-intracellular-molecules-as-potential-vascular-targets-in-irradiated-brain-arteriovenous-malformations
#20
Lucinda S McRobb, Vivienne S Lee, Margaret Simonian, Zhenjun Zhao, Santhosh George Thomas, Markus Wiedmann, Jude V Amal Raj, Michael Grace, Vaughan Moutrie, Matthew J McKay, Mark P Molloy, Marcus A Stoodley
Stereotactic radiosurgery (SRS) is an established treatment for brain arteriovenous malformations (AVMs) that drives blood vessel closure through cellular proliferation, thrombosis and fibrosis, but is limited by a delay to occlusion of 2-3 years and a maximum treatable size of 3 cm. In this current study we used SRS as a priming tool to elicit novel protein expression on the endothelium of irradiated AVM vessels, and these proteins were then targeted with prothrombotic conjugates to induce rapid thrombosis and vessel closure...
January 5, 2017: Radiation Research
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