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排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
Menno van Gameren Maarten Witsenburg Johanna J M Takkenberg Derize Boshoff Luc Mertens Anton M van Oort Dani?l de Wolf Matthias Freund Narayanswani Sreeram Regina B?kenkamp Melle D Talsma Marc Gewillig 《European heart journal》2006,27(22):2709-2715
AIMS: Stenting has become an established interventional cardiology procedure for congenital heart disease. Although most stent procedures are completed successfully, complications may occur. This multicentre study evaluated early complications after stenting in patients with congenital heart disease, including potential risk factors. METHODS AND RESULTS: In this combined Dutch-Belgian retrospective study, 309 consecutive patients had undergone 366 catheterizations and received 464 stents in 13 different anatomical positions (418 sites). Seventy-two stenting-related complications (19%) occurred, of which 24 (5.7%) were major. Seven procedure-related deaths were documented (2.3%). Stent malpositioning and embolization were most common (7.7%). The use of non-premounted stents tended to be associated with higher complication rates. Centre inexperience with stenting and stenting of native vs. post-surgical stenosis tended to be associated with increased major complication rates. CONCLUSION: After stenting, complications are common for congenital heart disease. The vast diversity of stenotic sites combined with relatively small patient populations makes these procedures sensitive to complications. Combining operator experience may reduce the risks of stenting in congenital heart disease. The availability of premounted stents for greater vessel diameters will likely reduce incidences of stent migration and embolization. 相似文献
42.
Raouf A. Mikhail Donald N. Reed David B. Bybee Matthias I. Okoye Max E. Dodds 《Head & neck》1988,10(6):427-431
A unique case of a malignant oncocytoma of the maxillary sinus is reviewed in detail. The ultrastructural findings are presented. The histologic and ultrastructural criteria that characterize onco-cytes and the clinicopathologic features of benign and malignant oncocytomas are discussed. This case represents the eleventh reported case that would truly qualify as a malignant oncocytoma of the paranasal sinuses. 相似文献
43.
Franz Thomas Ballmer Peter Matthias Ballmer Bernhard Aebi Reinhold Ganz M.D. 《Orthopedics and Traumatology》1994,3(1-2):78-87
Surgical Principles
The lateral approach is routinely combined with an osteotomy of the greater trochanter. We resect the newly formed callus
located at the anterior, posterior and caudal aspect of the femoral neck distal to the epiphysis. No shortening of the femoral
neck results from this procedure. One can safely avoid a vascular injury by performing a careful dissection, since the posteriorly
reflected articular capsule containing the nutrient vessels to the head is detached from the femoral neck like a banana peel.
The resection manoeuvre is performed next to the physeal plate of the slipped epiphysis. After callus resection, reduction
of the femoral head by longitudinal traction and internal rotation of the limb is easy. The aim is complete correction of
the slippage. When there is excess physeal cartilage, we resect it with a curette and then the head is fixed using 2 screws.
Revised Version from: Operat. Orthop. Traumatol. 4 (1992), 77–85 (German Edition). 相似文献
44.
Freddy Haryanto MSc Matthias Fippel Annemarie Bakai Fridtjof Nüsslin 《Strahlentherapie und Onkologie》2004,180(1):57-61
BACKGROUND: Nowadays, multileaf collimation of the treatment fields from medical linear accelerators is a common option. Due to the design of the leaf sides, the tongue and groove effect occurs for certain multileaf collimator applications such as the abutment of fields where the beam edges are defined by the sides of the leaves. MATERIAL AND METHODS: In this study, the tongue and groove effect was measured for two pairs of irregular multileaf collimator fields that were matched along leaf sides in two steps. Measurements were made at 10 cm depth in a polystyrene phantom using Kodak EDR2 films for a photon beam energy of 6 MV on an Elekta Sli-plus accelerator. To verify the measurements, full Monte Carlo simulations were done. In the simulations, the design of the leaf sides was taken into account and one component module of BEAM code was modified to correctly simulate the Elekta multileaf collimator. RESULTS AND CONCLUSION: The results of measurements and simulations are in good agreement and within the tolerance of film dosimetry. 相似文献
45.
Thomas Rosemann Michel Wensing Katharina Joest Matthias Backenstrass Cornelia Mahler Joachim Szecsenyi 《BMC musculoskeletal disorders》2006,7(1):48-9
Background
Osteoarthritis (OA) is highly prevalent and has substantial impact on quality of life as well as on healthcare costs. The general practitioner (GP) often is the first care provider for patients with this chronic disease. The aim of this study was to identify health care needs of patients with OA and to reveal possible obstacles for improvements in primary care management of OA patients. 相似文献46.
47.
48.
Rechtsanwalt Dr. iur. Matthias Dann LL.M. 《MedR Medizinrecht》2007,25(11):638-643
Ohne Zusammenfassung 相似文献
49.
RiLSG Matthias Willersinn 《MedR Medizinrecht》2007,25(11):684-690
Ohne Zusammenfassung 相似文献
50.
Matthias Siepe Claudia Heilmann Patrick von Samson Philippe Menasché Friedhelm Beyersdorf 《European journal of cardio-thoracic surgery》2005,28(2):318-324
Several human organs are not capable of functional regeneration following a tissue defect and react with scar formation. In stem cell transplantation, undifferentiated or partly differentiated precursor cells are applied to defective tissue for therapeutic regeneration. After promising preclinical investigations, the transplantation of autologous stem cells for myocardial infarction treatment is being transferred to clinical use. Mesenchymal stem cells and endothelial precursor cells derived from the bone marrow or circulating blood as well as skeletal myoblasts are employed in clinical trials. Furthermore, indications for cell transplantation and delivery routes vary considerably throughout current investigations. Initial results suggest a potential for restoration of cardiac function in stem cell-treated patients; however, the mechanisms are not fully understood. This overview will focus on objectives, recent achievements, and future perspectives of diverse stem cell transplantation approaches. 相似文献