1,720,966 research outputs found
Recovery of baseline renal function after treatment for prolonged in-stent artery thrombosis, in a COVID-19 positive patient: a case report
Full text linkObjective: Acute renal in-stent thrombosis is common, especially after complex endovascular treatments, or in case of risk factors such as Covid-19 infection. Irreversible renal damage occurred when the renal artery was occluded for more than 3 hours. In this case, we present a case of renal function recovery after
thromboaspiration of a renal stent thrombosis for more than 72 hours.
Case presentation: A 88-year-old man who tested positive for COVID-19 presented to the emergency room with dyspnea and anuria. He referred a previous complex endovascular intervention with the triple chimney technique (ChEVAR). More than 72 hours passed between the onset of symptoms to the diagnosis of acute renal intra-stent thrombosis. He underwent urgent thromboaspiration with neurovascular devices returning to his baseline renal function.
Conclusion: Despite the prolonged ischemia, renal revascularization with thromboaspiration restored renal function and rescued the remaining renal parenchym
Polyester stent graft devices and higher risk of post-implantation syndrome after EVAR: single-center analysis of 367 patients
No full textBackground: The post-implantation syndrome may occur shortly after endovascular aneurysm repair in patients treated for abdominal aortic aneurysm. Different types of biomaterials may provoke varying inflammatory responses in patients receiving different endografts. The purpose of this article is to evaluate the PIS after EVAR and the influence of different types of device fabric. Methods: All patients submitted to elective AAA endovascular repair at our institution from January 2014 to December 2019 were enrolled. The PIS was defined by a body temperature of >38°C and WBC >12’000/μl without any evidence of an infection during (48h) the observation period. Results: Three hundred and sixty-seven patients (89% males) were enrolled in this study and post-implantation syndrome occurred in 41 cases (11.2%). The incidence of PIS was significantly higher (P< 0.001) in patients treated with polyester stent grafts (39/201, 19,4%) compared to patients with PTFE stent grafts (2/166, 1,2%). CRP was related to the presence of PIS with a cut-off values of 109.31 mg/dL (P = 0.0052). The median in-hospital stay considering the polyester group was 6,2 days, while in the PTFE group it was 5,6 days (P = 0.04). Conclusions: The postoperative inflammatory response after EVAR seems significantly higher by using polyester stent graft compared to PTFE devices. CRP could be a useful biomarker in defining PIS. Multi-center studies are necessary to confirm these data
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Internal carotid stenosis associated with compression by hyoid bone
Full text linkAtherosclerotic plaques concomitantly with the hyoid bone protrusion into the internal carotid artery (ICA) are rarely reported in the literature. These plaques can be considered as arising from the turbulent flow and the shear stress caused by the close contact between the hyoid bone and the arterial wall carotid artery. The carotid stenosis was greater than 70%. We report a patient with a transient ischemic attack and a right significant carotid artery stenosis presumably due to a compression of an elongated ICA by the hyoid bone. The patient was submitted to open surgery to remove the plaque and correct the anomalous course of ICA combined with the lysis of the arterial adhesions with the right greater horn of the hyoid bone. The hyoid bone is a remote cause of injury and subsequent atherosclerotic lesions of carotid vessels. Elongation of the carotid artery can alter its course and can favor the mechanical interference with the hyoid bone and the subsequent arterial wall damage. When an external compression of the carotid artery is viewed, the endovascular treatment of the carotid artery stenosis is not advisable and open surgery is mandatory
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Clinical worsening despite intravenous thrombolysis in acute ischemic stroke secondary to carotid plaque rupture
Full text linkFirst-line therapy of acute ischemic stroke is intravenous thrombolysis (IVT) irrespective of etiology. We report on a patient with acute ischemic stroke secondary to carotid plaque rupture who experienced plaque thrombosis and marked clinical worsening despite IVT. While the latter is the gold standard therapy optimal platelets inhibition should be guaranteed to allow a safe as possible carotid intervention. Hereby we discuss all available strategies to be considered in order to better individualized treatment decision-making
Ultrasound-guided Femoseal® vascular closure device in antegrade common femoral artery puncture
No full textAim: To retrospectively review the efficacy and safety of ultrasound-guided Femoseal vascular closure device in antegrade common femoral artery puncture after peripheral arteries revascularization.Methods: We reviewed the hemostatic outcome achieved with DUS guided FemoSeal in patients undergoing antegrade common femoral artery accesses for percutaneous lower limbs revascularization using 6- to 8-Fr vascular sheaths. Exclusion criteria were known bleeding or coagulation disorder, previous femoral artery punctures within 1 month and/or previous common femoral artery vascular interventions. Primary endpoint was technical success. Secondary endpoints were access complications and need for reintervention.Results: A total of 301 patients (250 M; 51 F) were included in the study. Technical success was achieved in 99%. One pseudoaneurysm (0.3%) developed in the first post-operative day and was treated with Human Thrombin Injection. Two more pseudoaneurysms were found during follow-up at the first 1 month US scan. Two conversions to manual compression occurred.Conclusion: The use of ultrasound-guided FemoSeal VCD in antegrade CFA puncture demonstrated high technical success and a low complication rate. These findings suggest that it is a safe and effective option for achieving hemostasis in patients undergoing percutaneous lower limb revascularization. Further studies with larger cohorts and longer follow-up may help confirm these results and refine patient selection criteria
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
- …
