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https://www.readbyqxmd.com/read/28709812/patent-foramen-ovale-and-cryptogenic-stroke
#1
REVIEW
Koki Nakanishi, Minoru Yoshiyama, Shunichi Homma
The presence of a patent foramen ovale (PFO) has been found to be associated with an increased risk of cryptogenic stroke in many case-control studies. This paper reviews the current understanding of the pathophysiology and diagnosis of PFO, and therapeutic options of patients with PFO and cryptogenic stroke.
July 4, 2017: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28705105/clinical-outcomes-of-secondary-prevention-strategies-for-young-patients-with-cryptogenic-stroke-and-patent-foramen-ovale
#2
Alessandra Danese, Chiara Stegagno, Giampaolo Tomelleri, Anna Piccoli, Giulia Turri, Monica Carletti, Andrea Variola, Maurizio Anselmi, Sara Mazzucco, Angela Ferrara, Paolo Bovi, Nicola Micheletti, Manuel Cappellari, Salvatore Monaco, Corrado Vassanelli, Flavio Ribichini
Background The aim of this study was to compare the immediate and long-term clinical outcomes of medical therapy and percutaneous patent foramen ovale (PFO) closure as secondary prevention strategies in patients younger than 55 years of age presenting with cryptogenic stroke and PFO. Methods Between January 2006 and April 2015, all patients with the diagnosis of cryptogenic stroke and PFO were analysed and prospectively followed. Stroke was confirmed in 159 out of 309 patients (51%). In the remaining cases, other neurological conditions were found and therefore excluded from further analysis...
July 14, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28696881/persistent-left-superior-vena-cava-incidence-and-management-in-patients-undergoing-repair-of-partial-anomalous-pulmonary-venous-connection
#3
Nicholas S Clarke, Raghav A Murthy, Kristine J Guleserian
INTRODUCTION: A association between partial anomalous pulmonary venous connection (PAPVC) and systemic venous anomalies has been described in the literature, but the true incidence is yet to be elucidated. At our institution, we sought to find the incidence of a persistent left superior vena cava (PLSVC) in patients undergoing an operation for PAPVC. METHODS: A retrospective review of all pediatric and adult patients with PAPVC who underwent surgical repair from February 2006 to February 2016...
July 2017: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/28696661/multicolor-super-resolution-fluorescence-microscopy-with-blue-and-carmine-small-photoblinking-polymer-dots
#4
Xuanze Chen, Zhihe Liu, Rongqin Li, Chunyan Shan, Zhiping Zeng, Boxin Xue, Weihong Yuan, Chi Mo, Peng Xi, Changfeng Wu, Yujie Sun
Advances in the development of small photoblinking semiconducting polymer dots (Pdots) have attracted great interest for use in super-resolution microscopy. However, multicolor super-resolution imaging using conventional small photoblinking Pdots remains a challenge due to their limited color choice, broad emission spectrum, and heavy spectrum crosstalk. Here, we introduce two new types of small photoblinking Pdots with different colors and relatively narrow emission spectra: blue PFO Pdots and carmine PFTBT5 Pdots for blinking-based statistical nanoscopy...
July 11, 2017: ACS Nano
https://www.readbyqxmd.com/read/28684051/patent-foramen-ovale-closure-to-prevent-secondary-neurologic-events
#5
REVIEW
Rosie Jasper, James C Blankenship
In October of 2016 the United States Food and Drug Administration approved the Amplatzer Patent Foramen Ovale (PFO) occluder device for use in patients with cryptogenic stroke, to reduce the risk of recurrent stroke. This event followed 15years of off-label use of atrial septal occluder devices, 3 randomized trials, and enormous controversy over the efficacy of this procedure. While none of the trials reached the primary endpoint needed to prove the efficacy of PFO closure in preventing recurrent stroke, meta-analyses and 5-year follow-up of 1 trial suggest that PFO closure decreases the risk of recurrent stroke, especially in sub-groups with large shunts and atrial septal aneurysms, and especially when the Amplatzer device (rather than other devices) is used...
July 3, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28671864/a-case-report-on-pulmonary-arteriovenous-fistula-with-recurrent-cerebral-infarction
#6
Lu He, Ge-Sheng Cheng, Ya-Juan Du, Yu-Shun Zhang
Patent foramen ovale (PFO) and pulmonary arteriovenous fistula (PAVF) have been both proposed as a mechanism for cerebral infarction. However, there are only a few reports on how to distinguish the role of the two factors in cerebral infarction.
June 20, 2017: Heart Surgery Forum
https://www.readbyqxmd.com/read/28652058/repeated-paradoxical-brain-infarctions-in-a-patient-on-self-managed-home-hemodialysis-using-a-long-term-indwelling-catheter
#7
Takuya Kiyohara, Tadataka Mizoguchi, Junya Kuroda, Yoshinobu Wakisaka, Aya Irie, Chie Kitaoka, Kiichiro Fujisaki, Udai Nakamura, Kazuhiko Tsuruya, Takanari Kitazono, Tetsuro Ago
We describe the case of a 51-year-old Japanese man with an end-stage kidney disease caused by a 30-year history of type 1 diabetes mellitus. The patient had suffered repeated bilateral multiple brain infarctions within a short period of time after the initiation of a self-managed daily home hemodialysis regimen using a long-term indwelling catheter inserted into the right atrium. Despite extensive examinations, we could not find any embolic causes except for the catheter and a patent foramen ovale (PFO). The patient had experienced repeated brain infarctions under antiplatelet and anticoagulation therapies, but suffered no further brain infarctions after the removal of the catheter and the alteration of vascular access from the catheter to an arteriovenous fistula in the forearm...
June 23, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28649486/constrictive-pericarditis-induced-shunting-through-a-pfo-persistence-despite-pericardiectomy
#8
Emily Schuiteman, Thomas Verrill, Nader Mina, Bhavinkumar Dalal
A patent foramen ovale (PFO) is found in around 25-30% of patients. The discovery is often made only on autopsy, as most PFOs are clinically silent and any inter-atrial blood exchange typically shunts from the left to right heart [1]. Thus, when a patient presents with hypoxic respiratory failure, concern for presence of a PFO is rarely at the top of the differential. However, in the setting of elevated right heart pressures, PFOs can become of great hemodynamic importance and can lead to deadly complications, including right to left shunting and refractory hypoxic respiratory failure...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28648024/-comparison-on-the-efficacy-and-safety-of-different-occlusion-devices-for-the-treatment-of-patients-with-patent-foramen-ovale
#9
W J Liu, Y S Zhang, G S Cheng, Y J Du, L He, X Y Wang, X M He
Objective: To compare the efficacy and safety of Cardi-O-fix patent foramen ovale (PFO) occluder and Amplatzer PFO occluder for the treatment of patients with PFO. Methods: A total of 246 consecutive patients (105 males and 141 females) with PFO were prospectively enrolled from May 30, 2013 to March 30, 2015 in our hospital. PFO interventional closure was applied according to the anatomical structure of the disease and patients' wishes.Cardi-O-fix PFO occluder was used in 180 cases (COF group), Amplatzer PFO occluder was used in the remaining 66 cases (Amp group)...
June 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28641400/cytosolic-delivery-of-sirna-by-ultra-high-affinity-dsrna-binding-proteins
#10
Nicole J Yang, Monique J Kauke, Fangdi Sun, Lucy F Yang, Katie F Maass, Michael W Traxlmayr, Yao Yu, Yingda Xu, Robert S Langer, Daniel G Anderson, K Dane Wittrup
Protein-based methods of siRNA delivery are capable of uniquely specific targeting, but are limited by technical challenges such as low potency or poor biophysical properties. Here, we engineered a series of ultra-high affinity siRNA binders based on the viral protein p19 and developed them into siRNA carriers targeted to the epidermal growth factor receptor (EGFR). Combined in trans with a previously described endosome-disrupting agent composed of the pore-forming protein Perfringolysin O (PFO), potent silencing was achieved in vitro with no detectable cytotoxicity...
June 21, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28632821/encapsulated-islet-transplantation-where-do-we-stand
#11
Vijayaganapathy Vaithilingam, Sumeet Bal, Bernard E Tuch
Transplantation of pancreatic islets encapsulated within immuno-protective microcapsules is a strategy that has the potential to overcome graft rejection without the need for toxic immunosuppressive medication. However, despite promising preclinical studies, clinical trials using encapsulated islets have lacked long-term efficacy, and although generally considered clinically safe, have not been encouraging overall. One of the major factors limiting the long-term function of encapsulated islets is the host's immunological reaction to the transplanted graft which is often manifested as pericapsular fibrotic overgrowth (PFO)...
2017: Review of Diabetic Studies: RDS
https://www.readbyqxmd.com/read/28631766/-postural-effect-in-patients-with-patent-foramen-ovale-evaluation-of-right-to-left-shunt-with-transcranial-doppler-and-transthoracic-echocardiography-and-correlation-with-arterial-oxygen-saturation
#12
Stefano Lucreziotti, Chiara Debenedetti, Laura Massironi, Antonio Mantero, Fabiano Di Marco, Massimo Chessa, Stefano Carugo
BACKGROUND: Transcranial Doppler echocardiography and transthoracic echocardiography may detect with high accuracy right-to-left shunt (RLS) due to patent foramen ovale (PFO). However, a standardized diagnostic protocol has never been established. It has been suggested that standing or sitting positions may improve sensitivity of transcranial Doppler due to increased LRS in such positions. We aimed to test efficacy of the sitting position in addition to the supine position in the grading of RLS in patients with PFO...
June 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28626173/prevalence-of-right-to-left-shunts-in-japanese-patients-with-migraine-a-single-center-study
#13
Akio Iwasaki, Keisuke Suzuki, Hidehiro Takekawa, Ryotaro Takashima, Ayano Suzuki, Shiho Suzuki, Koichi Hirata
Objective Several studies have shown an increased prevalence of right-to-left shunt (RLs) in migraine patients, particularly those with aura. However, the prevalence of RLs and its relation to Japanese patients with migraine are unknown. We investigated the prevalence of RLs in Japanese patients with migraine. Methods In total, 112 consecutive patients with migraine were recruited from our headache outpatient clinic. Migraine with aura (MA) and migraine without aura (MWOA) were diagnosed according to the International Classification of Headache Disorders, 3rd edition (beta-version)...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28612912/temporal-healing-patterns-and-coverage-dynamics-after-new-polish-transcatheter-pfo-occluder-implantation-in-a-swine
#14
Krzysztof Milewski, Roland Fiszer, Piotr Paweł Buszman, Przemysław Węglarz, Adam Janas, Agata Krauze, Michał Jelonek, Piotr Hirnle, Grzegorz Smolka, Robert Gil, Jacek Białkowski, Paweł Eugeniusz Buszman
BACKGROUND: Although currently used devices for interventional closure of patent foramen ovale (PFO) are widely used due to minimally invasive nature of this technique and high success rate, there is still a need to look for new materials and designs in order to improve the treatment outcomes. AIM: To evaluate safety, biocompatibility, temporal healing patterns and coverage dynamics of the new Polish PFO occluder (Balton, Warsaw, Poland) in a swine model - an observation that may assist decision with regard to its first-in-human use and duration of anticoagulation therapy...
June 14, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28602537/atrial-septal-defect-increases-the-risk-for-stroke-after-total-hip-arthroplasty
#15
Dean C Perfetti, Morad Chughtai, Matthew R Boylan, Qais Naziri, Aditya V Maheshwari, Michael A Mont
BACKGROUND: Atrial septal defect (ASD) and patent foramen ovale (PFO) are 2 of the most common congenital heart diseases in adults and pose important risks of perioperative acute ischemic stroke (AIS) from paradoxical emboli. We evaluated the following: (1) the prevalence of ASD/PFO in the total hip arthroplasty (THA) population; (2) the rate of perioperative AIS during index admissions; and (3) the risk for perioperative AIS after THA for patients with ASD/PFO vs matched controls. METHODS: We identified 393,652 patients in the Nationwide Inpatient Sample who underwent THA between January 1, 2007, and December 31, 2013...
May 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28596047/successful-percutaneous-closure-of-a-residual-atrial-septal-defect-due-to-device-failure
#16
Sílvia Aguiar Rosa, Filipa Ferreira, Lídia de Sousa, António Fiarresga, José Diogo Martins, Ana Galrinho, Ana Agapito, Paula Fazendas, Fátima F Pinto, Rui Cruz Ferreira
A 39-year-old woman underwent uneventful percutaneous occlusion of an ostium secundum atrial septal defect (ASD) with a 22 mm Ultrasept ASD Occluder(®). Transesophageal echocardiography (TEE) performed two years after implantation revealed a de novo residual left-to-right shunt through the correctly implanted device. Three-dimensional transesophageal echocardiography (3D TEE) further clarified this finding by showing a perforation of the device membrane coating. The patient underwent transcatheter closure of the residual shunt with a 20 mm Ultrasept PFO(®) device...
June 5, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/28578242/removal-of-antibiotics-sulfamethazine-tetracycline-and-chloramphenicol-from-aqueous-solution-by-raw-and-nitrogen-plasma-modified-steel-shavings
#17
Van Son Tran, Huu Hao Ngo, Wenshan Guo, Cuong Ton-That, Jianxin Li, Jixiang Li, Yi Liu
The removal of sulfamethazine (SMT), tetracycline (TC) and chloramphenicol (CP) from synthetic wastewater by raw (M3) and nitrogen plasma modified steel shavings (M3-plN2) was investigated using batch experiments. The adsorption kinetics could be expressed by both pseudo-first-order kinetic (PFO) and pseudo-second-order kinetic (PSO) models, where correlation coefficient r(2) values were high. The values of PFO rate constant k1p and PSO rate constant k2p decreased as SMT-M3>SMT-M3-plN2>TC-M3-plN2>TC-M3>CP-M3>CP-M3-plN2 and SMT-M3>SMT-M3-plN2>TC-M3>TC-M3-plN2>CP-M3>CP-M3-plN2, respectively...
June 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28574934/pfo-closure-for-cryptogenic-stroke-a-review-and-clinical-treatment-algorithm
#18
Harsimran S Singh, Farhan Katchi, Srihari S Naidu
With a high prevalence in the general population of approximately 25%, and a prevalence in the cryptogenic stroke population approaching 40%, the propensity of a patent foramen ovale (PFO) to precipitate or enable stroke, especially in young, otherwise healthy individuals, has been the subject of much debate. With proof of concept achieved via imaging modalities documenting thrombus-in-transit, and the development of minimally-invasive percutaneous approaches to closure, multiple observational studies and, more recently, several completed randomized controlled trials have sought to answer the question of when and in whom PFO closure should occur...
July 2017: Cardiology in Review
https://www.readbyqxmd.com/read/28570259/propensity-score-matched-comparison-of-the-cera-pfo-occluder-with-the-amplatzer-pfo-occluder-for-percutaneous-closure-of-patent-foramen-ovale-without-echocardiographic-guidance
#19
Mirjam Ulmi, Fabien Praz, George C M Siontis, Andreas Wahl, Stephan Windecker, Heinrich P Mattle, Bernhard Meier
BACKGROUND: Percutaneous patent foramen ovale (PFO) closure has become a routine procedure and was proven to be safe and feasible. In a recently published pooled analysis of randomized trials, percutaneous PFO closure was shown to more effectively reduce recurrent stroke when compared with medical therapy in patients with cryptogenic strokes. However, procedural safety and closure rate are device dependent. METHODS: We performed a propensity-score matched comparison of 28 patients undergoing percutaneous PFO closure using the Cera PFO occluder (CPO) with 28 patients who received the Amplatzer PFO occluder (APO)...
May 15, 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28568903/multidisciplinary-assessment-of-pfo-with-substantial-right-to-left-shunting-and-medium-term-follow-up-after-pfo-device-closure-a-single-center-experience
#20
Lu He, Ge-Sheng Cheng, Ya-Juan Du, Yu-Shun Zhang
OBJECTIVES: To describe the multidisciplinary assessment of patent foramen ovale (PFO) with substantial right-to-left shunting (RLS) and medium-term follow-up after PFO closure for stroke or transient ischemic attack (TIA). BACKGROUND: PFO closure is a therapeutic option to prevent recurrent ischemic event in patients with cryptogenic stroke and TIA. The apparent lack of benefit seen in previous studies was in part due to the inclusion of patients with alternate mechanisms of stroke/TIA...
June 1, 2017: Journal of Interventional Cardiology
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