1,721,302 research outputs found
New frontiers in the feasibility of optical coherence tomography in carotid arteries
No full textComment on:
Frequency-domain optical coherence tomography assessment of human carotid atherosclerosis using saline flush for blood clearance without balloon occlusion. [AJNR Am J Neuroradiol. 2013
The long journey of acute limb ischemia management: from the disappointing observation of a medical student to precision medicine and the tailored endovascular treatment
No full textMinimally invasive or conventional aorto-bifemoral by-pass. A randomised study
No full textAbstractIntroduction: open transperitoneal aorto-bifemoral by-pass is still associated with a relatively high morbidity and mortality. To decrease this surgical stress, minimally invasive direct aortic surgery (MIDAS) was developed, utilizing a minilaparotomy and a retroperitoneal approach to the aorta. Objectives: to compare in a randomised controlled trial whether mortality and morbidity could be reduced with MIDAS. Methods: from October 1997 to September 2000, 300 patients were randomised to either MIDAS (n = 150) or conventional aorto-bifemoral by-pass surgery (n = 150). Results: the perioperative (30 days) mortality (2.6%), was equal in both groups. MIDAS were significantly reduced length of hospital stay (3.1 days), and pulmonary dysfunction. Conclusions: MIDAS reduced trauma and pain, which resulted in a shorter hospital stay, and a reduction in costs
Development of GaN - bases three-phase Grid- Tie Inverter
No full textWide band gap (WBG) semiconductor devices have been widely concerned due to their superior performance over conventional Si power devices. They are expected to improve the power converters' efficiency and density. The main objective of this paper is to present the design of a three-phase Ga-based inverter with a particular focus on the feasibility of GaN applications in PV inverters, reliability, and efficiency. PCB boards are designed and tested for the control and power circuits, and the advantage of fibre optic connection for the PWM transmission is highlighted. The methodology covers the main steps of PV inverter design and design considerations. The key parameters and experimental results are presented. The power density is 60 W/inch3, and the peak efficiency is 96% at 5kWload
Endovascular therapies for aorto-iliac and femoro-popliteal arterial disease: Buridan’s ass and the journey towards patient-tailored plaque therapy (PTPT)
No full textThe antithrombotic therapy after endovascular intervention: the correct interpretation of voyager Pad data
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Endografts for the treatment of aortic infection
No full textAortic infection is an uncommon but life-threatening condition. Conservative medical treatment is insufficient in many cases because of the high risk of persistent infection, aortic rupture, and death. Conventional open surgical treatment consists of extensive tissue debridement, complete removal of the infected prosthetic material, and arterial reconstruction with anatomical or extra-anatomical bypass. This treatment is associated with significant morbidity and mortality; in order to avoid these, minimally invasive options with endovascular aneurysm repair have been attempted. Endovascular repair is minimally invasive and provides rapid aneurysm exclusion and prompt control of bleeding in the face of hemodynamic instability. Despite this, a major concern is the risk associated with endograft placement in an infected bed, leading to controversy about the wisdom of using endovascular aneurysm repair in this setting for mid- and long-term periods. The rate of recurrent infection is unclear because the majority of information exists in exceptional single cases or short-term series, while unsuccessful results with this approach are less likely to be reported. This review aims to assess the role of endovascular therapy for aortic infections, including its applicability as definitive or bridge repair in mycotic aneurysm, aortobronchial, aortoesophageal, and aortoenteric fistulas, in terms of both primary and secondary outcomes (ie, after previous open or endovascular aneurysm repair)
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