Suchergebnisse

Since the arrival of the Emir Sheikh Hamad Bin Khalifa Al Thani to the power in 1995, Qatar has become a major player in international mediation. This thesis aims to study and analyze the evolution of Qatari foreign policy since 1995, the new position of the Emirate in international relations and within the Gulf region. It can be observed that Qatar plays now a new role in the mediation as well in the international relations ; Depuis l'accession au pouvoir de l'Emir Sheikh Hamad Bin Khalifa Al Thani en 1995, le Qatar a considérablement évolué pour devenir un acteur incontournable dans la médiation internationale. Ce travail a pour objet d'étudier et d'analyser les évolutions de la politique étrangère qatarie depuis 1995, la nouvelle place de l'Émirat dans les relations internationales, ainsi qu'au sein des pays du Golfe. Il permet d'observer que le Qatar joue un rôle désormais prépondérant tant dans la médiation que dans les relations internationales

Since the arrival of the Emir Sheikh Hamad Bin Khalifa Al Thani to the power in 1995, Qatar has become a major player in international mediation. This thesis aims to study and analyze the evolution of Qatari foreign policy since 1995, the new position of the Emirate in international relations and within the Gulf region. It can be observed that Qatar plays now a new role in the mediation as well in the international relations ; Depuis l'accession au pouvoir de l'Emir Sheikh Hamad Bin Khalifa Al Thani en 1995, le Qatar a considérablement évolué pour devenir un acteur incontournable dans la médiation internationale. Ce travail a pour objet d'étudier et d'analyser les évolutions de la politique étrangère qatarie depuis 1995, la nouvelle place de l'Émirat dans les relations internationales, ainsi qu'au sein des pays du Golfe. Il permet d'observer que le Qatar joue un rôle désormais prépondérant tant dans la médiation que dans les relations internationales

BACKGROUND: Various graft materials that are classified as autografts, xenografts, and allografts based on their origin have been used to endoscopically repair skull base defects. Tutoplast® (Tutogen Medical GmbH), an allogeneic natural collagen matrix, is processed through chemical sterilization that preserves tissue biocompatibility and structural integrity. OBJECTIVE: To study the safety and efficacy of Tutoplast Fascia Lata and Tutoplast Temporalis Fascia® as primary graft materials in the endoscopic reconstruction of skull base defects of different sizes and etiologies and to compare the outcomes with those of other traditional graft materials based on our experience. METHODS: This is a multi-center retrospective chart review of patients who underwent cerebrospinal fluid leak (CSF) endoscopic reconstruction with Tutoplast Fascia Lata or Tutoplast Temporalis Fascia as either a stand-alone reconstruction material or a part of a multilayer reconstruction depending on the defect at Prince Sultan Military Medical City and King Faisal Specialist Hospital and Research Center in Riyadh, Saudi Arabia, between 2017 and 2020. Our inclusion criteria were CSF leak repair with Tutoplast and a transnasal endoscopic approach. We reviewed demographic data, intraoperative and postoperative complications, repair materials, repair failure, defect size and location. RESULTS: Tutoplast® was used as the primary graft material in 33 cases. Our main outcome was repair success with lack of post operative CSF leak, observed in 30 cases (90.9%). There was no significant association between postoperative CSF leaks and factors including different defect sizes, defect sites, demographic data, hospitalization duration, or postoperative radiation in oncological cases. CONCLUSION: Tutoplast alone or in combination with other materials can be used safely and effectively for skull base defects repair.