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91.
R. V. Kishore Kumar Sathya Kumar Devireddy Raja Sekhar Gali Nemaly Chaithanyaa Sridhar 《Journal of maxillofacial and oral surgery》2013,12(1):21-29
Introduction
Injuries of the facial soft tissues may be due to road traffic accidents, industrial injuries, domestic and interpersonal violence, dog bites, human bites, war injuries etc. They may be described depending on the depth of involvement of the soft tissue and/or region since it gives the clinician the method of treatment. The soft tissue injuries must take into the underlying skeletal injury into account since these injuries if carelessly handled they leave deformed scarring in the most precious and beautiful part of the body.Materials and Methods
Various patients reporting to the department of Oral and Maxillofacial Surgery, Narayana Dental College and hospital, Nellore were included in the study. Injuries in the various aspects of face at various anatomical areas has been presented with the mode of management.Conclusion
The maxillofacial surgeon while attending these cases should avoid the need for revision by having a thorough knowledge of the anatomy, physiology of the soft tissues and treat them accordingly after following good clinical and radiological examination. 相似文献92.
Aliasgar V. Moiyadi Prakash M. Shetty Abhishek Mahajan Amar Udare Epari Sridhar 《Acta neurochirurgica》2013,155(12):2217-2225
Background
Intraoperative imaging is increasingly being used in resection of brain tumors. Navigable three-dimensional (3D)-ultrasound is a novel tool for planning and guiding such resections. We review our experience with this system and analyze our initial results, especially with respect to malignant gliomas.Methods
A prospective database for all patients undergoing sononavigation-guided surgery at our center since this surgery’s introduction in June 2011 was queried to retrieve clinical data and technical parameters. Imaging was reviewed to categorize tumors based on enhancement and resectability. Extent of resection was also assessed.Results
Ninety cases were operated and included in this analysis, 75 % being gliomas. The 3D ultrasound mode was used in 87 % cases (alone in 40, and combined in 38 cases). Use of combined mode function [ultrasound (US) with magnetic resonance (MR) images] facilitated orientation of anatomical data. Intraoperative power Doppler angiography was used in one-third of the cases, and was extremely beneficial in delineating the vascular anatomy in real-time. Mean duration of surgery was 4.4 hours. Image resolution was good or moderate in about 88 % cases. The use of the intraoperative imaging prompted further resection in 59 % cases. In the malignant gliomas (51 cases), gross-total resection was achieved in 47 % cases, increasing to 88 % in the “resectable” subgroup.Conclusions
Navigable 3D US is a versatile, useful and reliable intraoperative imaging tool in resection of brain tumors, especially in resource-constrained settings where Intraoperative MR (IOMR) is not available. It has multiple functionalities that can be tailored to suit the procedure and the experience of the surgeon. 相似文献93.
Jayesh Sardhara Sanjay Behari Awadhesh K. Jaiswal Arun Srivastava Rabi Narayan Sahu Anant Mehrotra Shubha Phadke Uttam Singh 《Acta neurochirurgica》2013,155(7):1157-1167
Background
This prospective study attempts to study the clinico-radiological differences between patients with syndromic AAD (SAAD), non-syndromic AAD (NSAAD), and AAD with Klippel–Feil anomaly (AADKFA) that may impact management.Methods
In 46 patients with AAD [SAAD (including Morquio, Down, Larson and Marshall syndrome and achondroplasia; n?=?6); NSAAD(n?=?20); and, AADKFS (n?=?20)], myelopathy was graded as mild (n?=?17, 37 %), moderate (15, 32.5 %) or severe (14, 30.5 %) based on Japanese Orthopaedic Association Score modified for Indian patients (mJOAS). Basilar invagination (BI), basal angle, odontoid hypoplasia, facet-joint angle, effective canal diameter, Ishihara curvature index, and angle of retroversion of odontoid and vertebral artery (VA) variations were also studied.Statistics
Clinico-radiological differences were assessed by Fisher’s exact test, and mean craniometric values by Kruskal–Wallis test (p value ≤?0.05 significant)Results
Incidence of irreducible AAD in SAAD (n?=?0), NSA AD (11.55 %) and AADKFS (n?=?18.90 %) showed significant difference (p?=?0.01). High incidence of kyphoscoliosis (83 %) and odontoid hypoplasia (83 %) in SAAD, and assimilated atlas and BI in NSAAD and AADKFA groups were found. In AADKFA, effective canal diameter was significantly reduced(p?=?0.017) with increased Ishihara index and increased angle of odontoid retroversion; 61 % patients had VA variations. Thirty-five patients underwent single-stage transoral decompression with posterior fusion (for irreducible AAD) or direct posterior stabilization (for reducible AAD). Postoperative mJOAS evaluation often revealed persistent residual myelopathy despite clinical improvement.Conclusions
Myelopathy is induced by recurrent cord trauma due to reducible AAD in SAAD, and compromised cervicomedullary canal diameter in NSAAD and AADKFA. SAAD in children may be missed due to incomplete odontoid ossification or coexisting angular deformities. In AADKFA, decisions regarding vertebral levels to be included in posterior stabilization should take into consideration intact intervening motion segments and compensatory cervical hyperlordosis. Following VA injury, endovascular primary vessel occlusion/stenting across pseudoaneurysm preempts delayed rehemorrhage. 相似文献94.
95.
Deepanshu Agrawal Swapnil Parchand Deepshikha Agrawal Samrat Chatterjee Anil Gangwe Mihir Mishra Anupam Sahu 《Indian journal of ophthalmology》2021,69(3):709
Purpose:To evaluate the impact of the COVID-19 pandemic and the national lockdown on the demographic and clinical profile of patients presenting with ocular trauma.Methods:In this retrospective, hospital-based, comparative analysis, patients presenting to the emergency department with ocular trauma in the following COVID-19 period (March 25, 2020 to July 31, 2020) were compared with patients in the pre-COVID-19 period (March 25, 2019 to July 31, 2019).Results:Overall, 242 patients (COVID-19 period: 71 and pre-COVID-19 period: 171) presented with ocular trauma. The mean age of the patients in COVID-19 and pre-COVID-19 periods were 26.7 ± 17.3 and 34.1 ± 20.3 years, respectively (P = 0.008). A majority of patients (68.6%) in both groups were from the rural background. Home-related injuries were common in the COVID-19 period (78.8%) as compared to pre-COVID-19 period (36.4%) (P < 0.0001). Iron particles (29.5%) were the common inflicting agents in the COVID-19 period while it was plant leaves (25.5%) in the pre-COVID-19 period. The most common ocular diagnosis was open globe injury (40.8%) in the COVID-19 period and microbial keratitis (47.9%) in the pre-COVID-19 period. Surgical intervention was required in 46.4% of patients in the COVID-19 period and 32.1% of patients in the pre-COVID-19 period (P = 0.034).Conclusion:During the COVID-19 period, there was a significant decline in the number of patients presenting with ocular trauma. In this period, a majority of patients sustained ocular trauma in home-settings. About half the patients required surgical intervention which was most commonly rendered in the form of primary wound repair. 相似文献
96.
Purpose:To describe retinal manifestations seen in patients associated with COVID-19 infection at a multi-specialty tertiary care hospital in Southern India.Methods:In this retrospective chart review, all consecutive cases presenting to the Retina-Uveitis service from May 2020 to January 2021 with retinal manifestations associated with COVID-19 infection or its sequelae or as a result of treatment given for COVID-19 were included.Results:Of the 7 patients, 3 were female, and 4 were male. Four patients had onset of symptoms during the active phase of COVID-19 infection. Four had bilateral and three had unilateral involvement. The manifestations ranged from mild to vision threatening. Vision threatening manifestations included infections: endogenous endophthalmitis, candida retinitis and tubercular choroidal abscess and bilateral pre-foveal hemorrhages. Milder manifestations included paracentral acute middle maculopathy, central serous chorio-retinopathy and voriconazole induced visual symptoms. Final visual acuity was 6/36 or better in the four severe cases and 6/9 or better in the mild cases.Conclusion:This study highlights the retinal manifestations associated with COVID-19 infection and its sequelae. As these patients presented with an association with COVID-19 (either during or after recovery), ophthalmologists should be vigilant and screen for such entities in case of complaints of visual symptoms or in the presence of systemic sepsis. The outcomes can be good with prompt and aggressive management. 相似文献
97.
98.
The green synthesis of copper nanoparticles (CuNPs) using a leaf extract from Jatropha curcas (JC) has been documented in our present research work. The existence of flavonoids, tannins, glycosides, and alkaloids was confirmed by the phytochemical analysis of the plant extract and these chemicals can be used as reducing, stabilizing and capping agents. After six months, the JC-CuNPs were found to be stable without any evidence of agglomeration. The JC-CuNPs were characterised by XRD, FT-IR, SEM, TEM and UV-vis spectrophotometry. The average particle and crystal sizes of the JC-CuNPs were found to be 10 ± 1 and 12 ± 1 nm, respectively. The SPR peaks were found at 266 and 337 nm, measured using electronic spectroscopy, and the calculated optical band gap was found to be 3.6 eV at 337 nm, indicating the semiconductor behaviour of the JC-CuNPs. JC-CuNPs have potential photocatalytic activity against methylene blue (MB) compared with other dyes in the presence of sunlight and the rate constant (k) value is 2.30 × 10−4 s−1. The JC-CuNPs also have a binding property with CT-DNA through an intercalation mode and the binding constant (Kb) is 1.024 × 102 M−1.The green synthesis of copper nanoparticles (CuNPs) using a leaf extract from Jatropha curcas (JC) has been documented in our present research work. 相似文献
99.
Venugopal Jayarama Reddy PhD Sridhar Radhakrishnan PhD Rajeswari Ravichandran M. Eng. Shayanti Mukherjee B. Tech. Ramalingam Balamurugan PhD Subramanian Sundarrajan PhD Seeram Ramakrishna PhD 《Wound repair and regeneration》2013,21(1):1-16
Mimicking porous topography of natural extracellular matrix is advantageous for successful regeneration of damaged tissues or organs. Nanotechnology being one of the most promising and growing technology today shows an extremely huge potential in the field of tissue engineering. Nanofibrous structures that mimic the native extracellular matrix and promote the adhesion of various cells are being developed as tissue‐engineered scaffolds for skin, bone, vasculature, heart, cornea, nervous system, and other tissues. A range of novel biocomposite materials has been developed to enhance the bioactive or therapeutic properties of these nanofibrous scaffolds via surface modifications, including the immobilization of functional cell‐adhesive ligands and bioactive molecules such as drugs, enzymes, and cytokines. In skin tissue engineering, usage of allogeneic skin is avoided to reestablish physiological continuity and also to address the challenge of curing acute and chronic wounds, which remains as the area of exploration with various biomimetic approaches. Two‐dimensional, three‐dimensional scaffolds and stem cells are presently used as dermal regeneration templates for the treatment of full‐thickness skin defects resulting from injuries and severe burns. The present review elaborates specifically on the fabrication of nanofibrous structured strategies for wound dressings, wound healing, and controlled release of growth factors for skin tissue regeneration. 相似文献
100.
Anas Boulemden Paul Aifesehi Arun Pajaniappane Kelvin Lau Amrita Bajaj Apostolos Nakas David A. Waller Sridhar Rathinam 《General thoracic and cardiovascular surgery》2013,61(12):707-710