Search results for " Sinus"

Navigation accuracy after automatic- and hybrid-surface registration in sinus and skull base surgery.

2016

Objective Computer-aided-surgery in ENT surgery is mainly used for sinus surgery but navigation accuracy still reaches its limits for skull base procedures. Knowledge of navigation accuracy in distinct anatomical regions is therefore mandatory. This study examined whether navigation accuracy can be improved in specific anatomical localizations by using hybrid registration technique. Study design Experimental phantom study. Setting Operating room. Subjects and methods The gold standard of screw registration was compared with automatic LED-mask-registration alone, and in combination with additional surface matching. 3D-printer-based skull models with individual fabricated silicone skin were u…

Letter: Tissue-Glue-Coated Collagen Sponge (TachoSil) for Minor Cerebral Dural Venous Sinus Laceration: What is the Evidence?

2015

We read with great interest the article by Gazzeri et al1 focusing on tissue-glue–coated collagen sponge (TachoSil) application to repair minor cerebral dural sinus lacerations. In their series, 57 consecutive patients were prospectively enrolled, and tears of the cerebral venous sinus were treated by TachoSil application directly to the site of the bleeding. In all patients, venous bleeding was managed initially by standard techniques for hemostasis such as compression, application of oxidized cellulose, or gelatin sponge. TachoSil application was used when standard measures failed to be effective, were excessively time- consuming or inadequate, or were considered risky. No complications r…

Short implants (8mm) versus longer implants (≥8mm) with lateral sinus floor augmentation in posterior atrophic maxilla: A meta-analysis of RCT`s in h…

2019

Background One of the greatest challenges that dentists face today is to rehabilitate severe atrophied alveolar ridges in partially and completely edentulous patients with implants. Despite the high survival rate of implants placed next to sinus elevation, this technique presents complications that can be avoided by placing short implants, an option that also presents high survival rates. For this reason, the aim of this study is to compare the survival rate, marginal bone loss and complications associated with short implants (<8 mm) versus longer implants (≥8mm) placed with lateral sinus floor elevation in posterior atrophic maxillae. Material and Methods A literature search was conducted …

Non-invasive localization of atrial ectopic beats by using simulated body surface P-wave integral maps

2017

Non-invasive localization of continuous atrial ectopic beats remains a cornerstone for the treatment of atrial arrhythmias. The lack of accurate tools to guide electrophysiologists leads to an increase in the recurrence rate of ablation procedures. Existing approaches are based on the analysis of the P-waves main characteristics and the forward body surface potential maps (BSPMs) or on the inverse estimation of the electric activity of the heart from those BSPMs. These methods have not provided an efficient and systematic tool to localize ectopic triggers. In this work, we propose the use of machine learning techniques to spatially cluster and classify ectopic atrial foci into clearly diffe…

Histological and immunohistochemical findings in a fatal case of thrombotic thrombocytopenia after ChAdOx1 nCov-19 vaccination

2021

This case report describes a fatal case of a young woman with superior sagittal, transverse and sigmoid sinus thrombosis after administration of the ChAdOx1 nCov-19 vaccination. Eleven days post-vaccination she was found unconscious and transferred to the Emergency Department. Blood parameters showed low platelets, and a CT scan showed an extensive left intracranial hemorrhage and the presence of an occlusive thrombus of the superior sagittal sinus. She under-went a craniectomy, but after the intervention, she remained in a comatose state. After a few days, her clinical conditions worsened, and she died. A complete autopsy was performed which showed a thrombosis of the cerebral venous distr…

VARIAZIONI anatomiche del seno sfenoidale VALUTATI IN MDTC

2009

Effects of functional endoscopic sinus surgery on the acoustics of the sinonasal tract

2017

Background: Nasal and paranasal cavities are supposed to contribute substantially to the vocal tract resonator properties. However, their acoustical effects as well as the effects of sinus surgery on the voice remain unclear. In this work we investigate resonance phenomena of paranasal sinuses prior to and after various rhinosurgical procedures in cadaveric human sinonasal tracts and corresponding 3D casts. Methodology: Nasal and paranasal cavities of formalin-preserved cadavers and corresponding 3D replicas were excited by sine tone sweeps from an earphone placed in the epipharynx.The response was picked up by a microphone at the nostrils. Different FESS procedures were performed and the a…

Invasive maxillary sinus aspergillosis: a case report successfully treated with voriconazole and surgical debridement

2014

Introduction: Invasive aspergillosis of the paranasal sinuses is a rare disease and often misdiagnosed; however, its incidence has seen substancial growth over the past 2 decades. Definitive diagnosis of these lesions is based on histological examination and fungal culture. Case Report: An 81-year-old woman with a history of pain in the left maxillary region is presented. The diagnosis was invasive maxillary aspergillosis in immunocompetent patient, which was successfully treated with voriconazole and surgical debridement. Possible clinical manifestations, diagnostic imaging techniques and treatment used are discussed. Since the introduction of voriconazole, there have been several reports …

Efficacy of Azacitidine (AZA) in Autoimmune and Inflammatory Disorders (AID) Associated with Myelodysplastic Syndromes (MDS) and Chronic Myelomonocyt…

2015

Abstract Background: AID are seen in 10-30% of MDS and CMML. After initial response to steroids, AID are often poorly controlled and steroid-sparing drugs are difficult to use due to the underlying MDS/CMML. Some case reports suggest a beneficial role of AZA treatment in AID associated to MDS/CMML. Methods: We retrospectively analyzed 22 MDS/CMML patients (pts) with AID who received AZA in French centers between January 2007 and May 2014. Results: Median age of the 22 pts was 70y (range 41-84), including 6F/16M. Diagnosis of MDS/CMML preceded AID (n=8) by a median of 17 months (mo), was concomitant with (n=7) or followed AID (n=7) by a median of 20 mo. 14 pts had lower risk IPSS and 8 highe…

Positioning the principles of precision medicine in care pathways for allergic rhinitis and chronic rhinosinusitis – A EUFOREA-ARIA-EPOS-AIRWAYS IC…

2017

Precision medicine (PM) is increasingly recognized as the way forward for optimizing patient care. Introduced in the field of oncology, it is now considered of major interest in other medical domains like allergy and chronic airway diseases, which face an urgent need to improve the level of disease control, enhance patient satisfaction and increase effectiveness of preventive interventions. The combination of personalized care, prediction of treatment success, prevention of disease and patient participation in the elaboration of the treatment plan is expected to substantially improve the therapeutic approach for individuals suffering from chronic disabling conditions. Given the emerging dat…