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排序方式: 共有2508条查询结果,搜索用时 15 毫秒
31.
Serkan Simsek Kazim Yigitkanli Hakan Seçkin Ayhan Comert Halil I. Acar Deniz Belen Ibrahim Tekdemir Alaittin Elhan 《European spine journal》2009,18(9):1321-1325
Although various posterior insertion angles for screw insertion have been proposed for C1 lateral mass, substantial conclusions
have not been reached regarding ideal angles and average length of the screw yet. We aimed to re-consider the morphometry
and the ideal trajections of the C1 screw. Morphometric analysis was performed on 40 Turkish dried atlas vertebrae obtained
from the Department of Anatomy at the Medical School of Ankara University. The quantitative anatomy of the screw entry zone,
trajectories, and the ideal lengths of the screws were calculated to evaluate the feasibility of posterior screw fixation
of the lateral mass of the atlas. The entry point into the lateral mass of the atlas is the intersection of the posterior
arch and the C1 lateral mass. The optimum medial angle is 13.5 ± 1.9° and maximal angle of medialization is 29.4 ± 3.0°. The
ideal cephalic angle is 15.2 ± 2.6°, and the maximum cephalic angle is 29.6 ± 2.6°. The optimum screw length was found to
be 19.59 ± 2.20 mm. With more than 30° of medial trajections and cephalic trajections the screw penetrates into the spinal
canal and atlantooccipital joint, respectively. Strikingly, in 52% of our specimens, the height of the inferior articular
process was under 3.5 mm, and in 70% was under 4 mm, which increases the importance of the preparation of the screw entry
site. For accommodation of screws of 3.5-mm in diameter, the starting point should be taken as the insertion of the posterior
arch at the superior end of the inferior articular process with a cephalic trajection. This study may aid many surgeons in
their attempts to place C1 lateral mass screws. 相似文献
32.
Effects of acute kidney injury on clinical outcomes in patients with upper gastrointestinal bleeding
Umit Cakmak Ozgur Merhametsiz Zafer Ercan Ayhan Haspulat Selma Karaahmetoglu Ozkan 《Renal failure》2016,38(2):176-184
Aim Upper gastrointestinal bleeding (UGIB) is a very frequently encountered condition that has a high morbidity and which increases treatment costs. Duration of hospital stay and mortality increases in patients with UGIB complicated by acute kidney injury (AKI). The aim of this study was to reveal risk factors in patients with UGIB developing AKI and to compare clinical outcomes and hospital costs between patients with UGIB developing AKI and those with UGIB not developing AKI.Material and methods This retrospective study included 245 patients admitted to the emergency unit and the intensive care unit for internal diseases at Ankara Numune Education and Research Hospital, Turkey. Results The difference in mortality rates between the patients with AKI and those without AKI was significant (p?0.001). The mean duration of intensive care unit stay was 0.2?±?1.1 days in the patients without AKI (n?=?143) and 2.5?±?5.6 days in the patients with AKI. It was significantly higher in the patients with AKI (p?0.001). Hospital stay was significantly longer in the patients with AKI than those without AKI, and as severity of AKI increased, hospital stay became considerably longer (p?0.001). Hospital costs were significantly higher in the patients with AKI than those without AKI, and as severity of AKI increased, hospital costs considerably rose (p?0.001). Conclusion AKI is a condition that lengthens hospital stay, increases hospital costs and creates a burden on health care systems. Detect kidney injury earlier and administering an appropriate treatment can improve clinical outcomes in patients with UGIB developing AKI. 相似文献
33.
Purpose: We aimed to evaluate the effectiveness of the endourologic management of forgotten and/or encrusted ureteral stents together with our single-center experience.Materials and methods: Fifty-four patients with forgotten double-J ureteral stents were treated in our center between January 2008 and March 2014. Encrustation and the related stone burdens were estimated by using computerized tomography and kidney–ureter–bladder radiography. The management method was chosen based on the stone burden or clinical and radiological findings.Results: Fifty-four patients, 39 males and 15 females, were included in the study. The average age of the patients was 38.2?±?25.06 (2–86) years. The average indwelling time of the ureteral stents was 22.6?±?30.3 (6–144) months. Six of the patients with forgotten stents had solitary kidneys. The double-J stent (DJS) was fragmented in four (7.4%) patients. A urinary system infection was present in 15 (27.7%) of the patients. The ureteral stents and related stones were successfully removed without any complications by combined endourologic techniques to achieve a stone-free state in all patients except for patient with 110 months of forgotten stent time in whom nephrectomy was performed for a nonfunctioning kidney related to the forgotten stent.Conclusions: Forgotten/encrusted DJS may lead to complications in a range of urinary system infections, up to a loss of renal function. They can be safely and successfully removed, and the renal function can be preserved by endourologic techniques, starting with the least invasive procedures in centers highly experienced. 相似文献
34.
Ozkan T Okumus A Aydin A Ozkan S Tuncer S 《Techniques in hand & upper extremity surgery》2005,9(1):60-65
Disorders of elbow extension occur following traumatic or neurologic injuries of the triceps muscle. Restoration of elbow extension is an integral part of the entire upper extremity surgical reconstruction to improve the following daily activities: bringing down an object from above, handwriting, using the hand in the supine position, steering a wheelchair, driving a car, and swimming. The transfer of the posterior head of the deltoid muscle to triceps (Moberg procedure) and the transfer of the biceps to triceps (Friedenberg procedure) are previously described procedures for the functional restoration of triceps function. In conditions where these procedures cannot be used, we describe a new technique for restoration of elbow extension. In 4 cases with obstetrical palsy sequela, where shoulder abduction was established with the latissimus dorsi and teres major transfer, restoration of elbow extension was planned to aid in activities performed while the hand is above the head. To achieve this goal, the brachioradialis muscle was transposed bipedically to the triceps muscle. 相似文献
35.
Proliferating-cell nuclear antigen (PCNA) as an independent prognostic marker in patients after prostatectomy: a comparison of PCNA and Ki-67 总被引:8,自引:0,他引:8
OBJECTIVE: To investigate the prognostic value of prostatic tumour cell proliferation, as measured by Ki-67 and proliferating cell nuclear antigen (PCNA), and to compare these measures in men at low and high risk for progression of tumour. PATIENTS AND METHODS: Two groups of patients with prostate cancer, i.e. 'metastatic' (M, 22) who had pT3b-4aN0M0 and pTanyN1M0, and 'nonmetastatic' (NM, 18), who had < or =pT3aN0M0 disease, were selected from a well-examined and mapped group of 114 treated by radical prostatectomy. Patients in the NM group were selected by the criteria of having a Gleason score of < or = 7. To assess proliferation, 1000 cells were counted at x 400 magnification by two observers and the percentage of tumour cells positively stained with Ki-67 and PCNA defined as the Ki-67 and PCNA labelling index (LI), respectively. The two LI were compared in the NM and M groups, and the correlation of the LIs with pathological stage, progression and prostate-specific antigen (PSA)-free survival evaluated. Prognostic values of the LI were analysed using multivariate analysis. RESULTS: The mean (range) follow-up was 33 (4-78) months. The mean LIs were higher in the M than the NM group for both PCNA and Ki-67 (P = 0.02 and 0.019, respectively). Both LIs were markedly different between the groups when stratified by progression, with both significantly higher in men with progression in the NM group. Both LIs had a significant association with Gleason score, pathological stage, progression and PSA-free survival. In multivariate analysis the PCNA LI, surgical margin status and pathological stage were independent factors for progression. CONCLUSION: Tumour cell proliferation as assessed by Ki-67 or PCNA correlate significantly with progression. The PCNA LI was an independent predictor of progression, especially in patients with a low risk of progression according to predefined criteria. 相似文献
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37.
Uzuner Selcuk Durcan Gizem Sahin Sezgin Bahali Kayhan Barut Kenan Kilicoglu Ali Guven Adrovic Amra Bilgic Ayhan Kasapcopur Ozgur 《Clinical rheumatology》2021,40(12):5025-5032
Clinical Rheumatology - Having a child with a chronic illness is a source of stress for the whole family, especially the primary caregiver. The aim of this study was to evaluate the associations... 相似文献
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