90 resultados para Series (Matematica)


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Background: Interpersonal violence is a worldwide social reality which seems to increasingly affect even the safest of countries, such as Switzerland. In this country, road traffic accidents, as well as professional and recreational activities, are the main providers of trauma-related injuries. The incidence of penetrative trauma related to stab wounds seems to be regularly increasing in our ED. The question arises of whether our strategies in trauma management are adapted to deal efficiently with these injuries.Methods: To answer this question, the study analysed patients admitted for intentional penetrative injuries in a tertiary urban emergency department (ED) during a 23 month period. Demographics, conditions of the assault, injury type and treatments applied were analysed.Results: Eighty patients admitted due to an intentional penetrating trauma accounted for 0.2% of the surgical practice of our ED. The assault occurred equally in a public or a private context, mainly affecting young males during the night and the weekend. Sixty six patients (83%) were treated as out-patients. Only 10 patients needed surgery. None of them required damage control surgery. No patient died and the mean hospital stay was 5.5 days.Conclusions: The prevalence of stab wounds in Switzerland is low. These injuries rarely need complex, surgical procedures. Observational strategies should be considered according to the patient status.

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Dr. Narakas intended to study a series of 61 cases of shoulder sequelae of obstetric palsy. His vast experience would have enriched our clinical knowledge of this ailment. The authors carry on with that study to clarify his therapeutic approach and share the benefit of his experience.

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OBJECTIVES: To describe the spectrum of pathologies responsible for neck ailments in a primary care pediatric emergency setting and evaluate their outcome. METHODS: All children aged 16 years or younger, who presented to the emergency department of the Children's Hospital of Lausanne during a 1-year period, were retrospectively identified and charts were reviewed. Causes of neck complaints were classified as traumatic (group 1), infectious (group 2), postural (group 3), or miscellaneous (group 4) according to the final diagnosis. History and physical examination findings, radiological and laboratory results, as well as patient outcomes were recorded. RESULTS: During the study period, 28,722 children were observed in the emergency department, and 170 were identified as having neck complaints. The number of patients with neck ailments in group 1 was 105 (62%). Group 2 contained 33 patients (19%), of which 28 (16.5%) had a viral infection and 5 (2.9%) had a bacterial infection. Group 3 contained 30 children (17.6%) and group 4 contained 2 children (1.2%). Cervical spine radiography was performed on an emergency basis in 60 children (57 in group 1, 2 in group 2, and 1 in group 3). Significant abnormalities were observed in 6 children. Cervical computed tomography (CT) was performed in 9 children, from which 5 were in group 1, 3 were in group 2, and 1 was in group 4. The CT scan revealed pathologic findings in 6 children. Follow-up data were available in 135 patients (79.4%), of which 129 (95.6%) experienced complete recovery in less than 2 weeks. Admission to the hospital was necessary in 4 children (1 in group 1 and 3 in group 2), including 2 for emergency surgical drainage of retropharyngeal abscesses. One child with posttraumatic torticollis was treated conservatively as an outpatient and recovered in 7 weeks. One child was had his/her condition eventually diagnosed with osteoid osteoma and treated with oral nonsteroidal anti-inflammatory drug. CONCLUSIONS: Most cases of neck ailments in children presenting to the emergency department were due to trauma or infection, which were effectively managed as outpatients. When signs and symptoms suggested an emergent cause, CT provided a definitive diagnosis. The evaluation of a child presenting with acute neck complaints should be based on history and physical examination. Plain radiographs and CT scan are contributive in selected cases.

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Controversy exists about the best method to achieve bone fusion in four-corner arthrodesis. Thirty-five patients who underwent this procedure by our technique were included in the study. Surgical indications were stage II-III SLAC wrist, stage II SNAC wrist and severe traumatic midcarpal joint injury. Mean follow-up was 4.6 years. Mean active flexion and extension were 34 degrees and 30 degrees respectively; grip strength recovery was 79%. Radiological consolidation was achieved in all cases. The mean DASH score was 23 and the postoperative pain improvement by visual analogue scale was statistically significant. Return to work was possible at 4 months for the average patient. Complications were a capitate fracture in one patient and the need for hardware removal in four cases. Four-corner bone wrist arthrodesis by dorsal rectangular plating achieves an acceptable preservation of range of motion with good pain relief, an excellent consolidation rate and minimal complications.

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BACKGROUND: The limitations of the medical management of symptomatic intracranial arterial stenosis encourage the development of new therapeutic strategies such as intracranial stenting. OBJECTIVE: To report and analyze the results of a series of 42 patients treated with 3 different endovascular techniques: isolated angioplasty, balloon-expandable coronary stents, and the Wingspan self-expandable intracranial stent system. METHODS: Forty-two patients presenting with symptomatic intracranial arterial stenosis were treated with one of these techniques. Computed tomography angiography was performed 6 months after the procedure, and the clinical neurological statuses were categorized using the modified Rankin Scale and the National Institutes of Health Stroke Scale. RESULTS: A total of 42 lesions were treated: 9 with isolated angioplasty, 14 with balloon-expandable coronary stents, and 19 with Wingspan self-expandable intracranial stents. The mean patient age was 62.9 years, and the mean arterial diameter stenosis was 73.9%. Technical success was achieved in 97.6% of the patients. The overall incidence of procedural complications was 21.4%, and the postoperative permanent morbidity/mortality rate was 7.1%. There were 3 cases of in-stent thrombosis (1 fatal) and 5 cases of asymptomatic restenosis (11.9%), 3 in the isolated angioplasty group and 2 in the Wingspan self-expandable intracranial stent group (mean follow-up 20.4 months). The rate of restenosis was higher in the angioplasty group (33%) than in the coronary (0%) and Wingspan stent (10.5%) groups. CONCLUSION: Endovascular treatment of symptomatic intracranial stenosis has significant overall morbidity and mortality rates. Nevertheless, the very critical natural history of severe refractory lesions and the relatively favorable postoperative evolution suggest that it should be considered the first alternative strategy in cases in which medical therapy has failed.

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BACKGROUND: Dizziness is a common symptom which is frequently due to either peripheral or central vestibular dysfunction. However, some patients may lack typical signs suggesting a vestibular or cerebellar lesion and they mostly complain of vertigo or posture imbalance induced by visual stimulation. The symptoms immediately improve either on cessation of the visual input or upon closure of the eyes. Such a presentation is typical of visual vertigo. PATIENTS AND METHODS: From 1993 to 2003, 242 patients were examined for either "vertigo" or "dizziness". The diagnosis of visual vertigo was based on both history and clinical examination and was present in 11 patients. RESULTS: Visual vertigo was diagnosed in 11/242 patients (4.5 %). Age range was 31 - 77 years (mean 47 years) with a sex ratio of 8 females for 3 males. Neuro-ophthalmological examination was normal in all cases. CONCLUSIONS: Visual vertigo is not a rare condition but the disease is underdiagnosed. The symptoms result from a mismatch between vestibular, proprioceptive and visual inputs. Neuro-ophthalmological, neurological and neuro-otological examination are often normal or not relevant and the diagnosis is largely based on history. It is important to recognize this entity because the symptoms might improve if the patients are treated with psycho-motor rehabilitation.

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Abstract Purpose Iridectomy of suspicious pigmented tumors provides the presumed advantage of both a histopathological diagnosis and treatment of the lesion. We present 2 patients that developed an iris melanoma with extrascleral extension at the site of their iridectomy of a histopathologically proven nevus, 46 and 2.5 years later. Methods Retrospective, clinicopathological small case series of 2 patients. Results Two patients underwent iridectomy for a suspicious tumor, the first in 1963 and the second in 2006. Pathological diagnosis was a benign and a borderline nevus respectively. In 2009, both patients presented with a recurrent melanocytic iridociliary tumor with an extrascleral extension adjacent to the surgical scar. Pathological examination confirmed melanoma. Consequently, the two patients underwent proton beam therapy of the whole anterior segment, with limbus deposition and reposition. Conclusion Iridectomy of a histopathologically proven nevus doesn't exclude the possibility of a metadifferentiation of remaining nevus cells into melanoma, even after 46 years. Additionally, treatment in case of a recurrence is more complicated than a primary radiotherapy of the unbiopsied iris tumor, with clinical proof of growth, would have been.

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AIM: To report a case series of five patients diagnosed with choroidal schwannoma at the Liverpool Ocular Oncology Centre. METHODS: Patients with choroidal schwannoma were identified by searching the computerised database of the Liverpool Ocular Oncology Centre. RESULTS: The patients (3 males, 2 females) ranged in age from 15 years to 45 years. Three tumours were treated by enucleation, trans-scleral local resection, and combined bevacizumab and photodynamic therapy, respectively. Two were observed after confirmation of the diagnosis by biopsy. CONCLUSIONS: Choroidal schwannoma has a variety of clinical manifestations. Associated features include hard exudates, retinal feeder vessels and serous retinal detachment. Biopsy with immunohistochemistry is required for diagnosis. Tumours not amenable to resection may respond to photodynamic therapy.

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Objectifs. - Le DSM-5 donne une définition du symptôme psychotique indépendante de tout concept depsychose. Chez les patients dépressifs, la présence d'hallucination ou d'idée délirante, quelle que soit leurforme clinique, conduit en principe à diagnostiquer une dépression psychotique et à prescrire des neurolep-tiques. Les symptômes psychotiques sont subdivisés par le DSM en « congruents » ou « non congruents » àl'humeur. Nous discutons de la pertinence d'une catégorie de symptômes psychotiques « atypiques », peuévocateurs d'une psychose au sens classique du terme. Méthode. - Discussion de la définition opérationnelle des symptômes psychotiques du DSM, étude d'unesérie de 16 patients chez qui un diagnostic de dépression psychotique a été posé. Résultats. - Sur les 16 patients, deux seulement présentaient des symptômes psychotiques classiques, évo-cateurs d'une psychose. Chez les autres, le diagnostic reposait sur la présence de symptômes très atypiques,comme des hallucinations visuelles par exemple.

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Background:Microcystic macular edema can occur after optic neuropathies of various etiologies, and is easily demonstrated by OCT. We report a cohort of patients with microcystic macular edema. Patients and Methods: All patients with optic neuropathy and microcystic macular edema were enrolled. Demographics, visual function, retinal angiographies and OCT parameters were studied. Results: Nineteen patients (23 eyes) exhibited microcystic macular edema: 10 men/9 women, aged 17-91 years. Etiologies of optic nerve atrophy were compressive (5), inflammatory (4), glaucoma (3), ischemic (3), trauma (2), degenerative (1), and hereditary (1). Median visual acuity was 4/10 (NLP-12/10). Fluorescein angiography showed no leakage. Topography of the microcystic macular edema correlated with near infrared images but with visual field defects in only 26 %. OCT parameters were all abnormal. Conclusions: Microcystic macular edema is a non-specific manifestation from an optic neuropathy of any etiology. The precise mechanism leading to microcystic macular edema remains unknown but trans-synaptic retrograde degeneration with Müller cells dysfunction is likely.