Search results for "Clipping"
showing 10 items of 22 documents
Aneurysm clipping following endovascular coil embolization: A report of two cases
2009
Abstract BACKGROUND: Treatment of intracranial aneurysms by Guglielmi detachable coil (GDC) embolization is a useful therapeutic alternative to surgery. This procedure is attractive as a minimally invasive approach to treat cerebral aneurysms; however, is not devoid of complications or failure and retreatment, with either a surgical or endovascular technique, may often be required. CASE REPORTS: Two cases are presented in which surgery was required after coil embolization. In one case, surgical treatment was performed one month later because of regrowth and subsequent bleeding of the aneurysm. In the second case, surgical treatment was carried out six months later because of recanalization …
The Supraorbital Keyhole Approach to Supratentorial Aneurysms: Concept and Technique
1998
Background Anterior surgical approaches to the base of the brain have always required relatively large craniotomies, most larger than the lesion itself. Especially in aneurysm surgery, the size of the lesion is not always proportionate to the extent of brain exposure. The improvement of surgical techniques and diagnostic imaging, as well as the introduction of neuroendoscopy and new surgical instruments, enable us now to treat various intracranial lesions through small keyholes. In particular, cerebral aneurysms, because of their anatomic characteristics, are apt to be treated by the keyhole approach. The supraorbital keyhole approach has the broadest field of indications, although its tech…
Endoscopy in aneurysm surgery.
2011
BACKGROUND: Surgical clipping with complete occlusion of the aneurysm and preservation of parent, branching, and perforating vessels remains the most definitive treatment for intracranial aneurysms. OBJECTIVE: To evaluate the benefit of endoscopic application during microsurgical procedures in a retrospective study. METHODS: One hundred eighty aneurysms were microsurgically treated in 124 operations. Three different applications of endoscopic visualization were used, depending on the respective requirements: inspection before clipping, clipping under endoscopic view, and postclipping evaluation. RESULTS: Of 1380 aneurysms, 292 procedures were done with application of the endoscope. Of these…
Laparoscopic temporary clipping of uterine artery during laparoscopic myomectomy
2012
Purpose: Our aim is to study the feasibility and effect of bilateral laparoscopic temporary occlusion of uterine arteries by special vascular clamps on blood loss during laparoscopic myomectomy. Methods: Of 166 women with symptomatic uterine myomas necessitating surgical intervention who wished to retain their uteri, 80 underwent laparoscopic uterine artery clipping and myomectomy (experimental group) and 86 received laparoscopic myomectomy only (control group). Main outcome measures were operating time, number and weight of leiomyomas, blood loss, Doppler examination of the uterine arteries and complications of procedure. Results: In the experimental group the median hemoglobin drop measur…
Effects of stubble height and cutting frequency on regrowth of berseem clover in a Mediterranean semiarid environment
2011
Defoliation management of forage crops affects endogenous reserves (in the root and in the stubble), the residual leaf area, and, consequently, the regrowth and biomass yield. The aim of this study was to evaluate the effect of cutting frequency (28-d vs. 35-d intervals) and stubble height (3 vs. 6 cm) on forage yield, regrowth, and persistence of berseem clover (Trifolium alexandrinum L.). Neither cutting interval nor cutting height affected plant survival during the crop cycle. Frequent clipping reduced crop yield. Residual biomass and leaf area were less when plants were cut at a height of 3 cm compared with 6 cm, but stubble height did not affect the total amount of dry matter (DM) remo…
3D interactive model of lumbar spinal structures of anesthetic interest
2014
A 3D model of lumbar structures of anesthetic interest was reconstructed from human magnetic resonance (MR) images and embedded in a Portable Document Format (PDF) file, which can be opened by freely available software and used offline. The MR images were analyzed using a specific 3D software platform for biomedical data. Models generated from manually delimited volumes of interest and selected MR images were exported to Virtual Reality Modeling Language format and were presented in a PDF document containing JavaScript-based functions. The 3D file and the corresponding instructions and license files can be downloaded freely at http://diposit.ub.edu/dspace/handle/2445/44844?locale=en. The 3D…
La configuración formal de las palabras idiomáticas originadas por acortamiento en locuciones en español: los casos de amén, estampía, mor y ton
2022
En el presente artículo pretendemos analizar la configuración formal con la que han quedado fijadas cuatro palabras idiomáticas (amén, estampía, mor y ton) que se han formado mediante aféresis, síncopa y apócope, es decir, procesos de acortamiento o eliminación de un fragmento respecto a una base originaria. Nos centraremos en fenómenos habituales que presentan este tipo de voces así formadas, como la estructura silábica, la acentuación paroxítona o la dislocación acentual respecto a sus bases. Reservamos para estudios futuros un análisis fraseológico centrado en los sintagmas y funciones de las cinco locuciones que estas conforman. The aim of this paper is to analyze the morphology of four…
Avoiding Complications in Aneurysm Ligation: Operative Tips and Tricks
2022
Preventing possible complications during brain aneurysm surgery is mandatory to ensure a better outcome for patients. Currently, it is possible to rely on some technologic innovations such as motor evoked potential, endoscope-assisted surgery, dye with indocyanine green, and video angiography capable of supporting the surgeon's work. The innovation process has mainly assisted the endovascular technique compared with surgery. The latter, apart from some new technical expedients, always requires anatomic knowledge and optimal technical preparation. A careful patient selection, adequate surgical exposure, use of microsurgical techniques in expert hands, and meticulous postoperative management …
Is Aspirin a Worthy Candidate in Preventing Intracranial Aneurysm Rupture?
2020
Subarachnoid hemorrhage (SAH) usually occurs with a thunderclap headache or the worst headache of a patient's life, leading to a neurologic emergency. Among cases of nontraumatic SAH, 80%–85% are caused by ruptured intracranial aneurysms (IAs) and comprise 3% of all strokes in high-income countries In the years 2000–2008, the incidence of SAH was 4–7 per 100,000 person-years in high-income and low-to middle-income countries. Outcome after aneurysmal SAH depends on several factors, including severity of the initial hemorrhage, rebleeding, perioperative medical management, and timing and technical success for vascular malformation exclusion from the cerebral circulation. It has been estimated…
Novel Simulation Model with Pulsatile Flow System for Microvascular Training, Research, and Improving Patient Surgical Outcomes
2020
Background Simulation allows surgical trainees to acquire surgical skills in a safe environment. With the aim of reducing the use of animal experimentation, different alternative nonliving models have been pursued. However, one of the main disadvantages of these nonliving models has been the absence of arterial flow, pulsation, and the ability to integrate both during a procedure on a blood vessel. In the present report, we have introduced a microvascular surgery simulation training model that uses a fiscally responsible and replicable pulsatile flow system. Methods We connected 30 human placentas to a pulsatile flow system and used them to simulate aneurysm clipping and vascular anastomosi…