Active clinical trials for "Necrosis"

Acute retinal necrosis (ARN) is a rare infectious retinitis which can potentially lead to devastating visual outcomes. ARN is diagnosed on the basis of the clinical appearance and disease course according to the diagnostic criteria proposed by the American Uveitis Society: (1) one or more foci of retinal necrosis with discrete borders in the peripheral retina; (2) rapid progression in the absence of antiviral therapy; (3) circumferential spread; (4) occlusive vasculopathy with arteriolar involvement; and (5) a prominent inflammatory reaction in the vitreous and anterior chambers. Herpesvirus infection, especially varicella-zoster virus (VZV) and herpes simplex virus (HSV), was presumed to be the pathogenic agent in the pathogenesis of ARN. Medical treatment with systemic antiviral agent had been the base of the therapy of ARN for decades and such treatment usually result in regression of retinitis. However, the visual outcome of ARN remains poor. The major causes of poor visual prognosis in ARN are retinal detachment and optic nerve or macular involvement by ischemic vasculopathy. Less frequent causes include macular hole formation, macular pucker, or hypotony. Rhegmatogenous retinal detachment may occur in 75 % of the untreated eyes. It may occur weeks to months after the onset of inflammation due to delayed formation of retinal breaks, which result from the combination of necrotic retina and vitreoretinal traction. Therefore, application of argon laser retinopexy prophylactically posterior to necrotic retina or prophylactic vitrectomy to reduce inflammatory factors and the vitreoretinal traction had been used to protect the healthy area from detachment. However, the results were varied and there is no consensus on the efficacy and indications of those prophylactic procedures. We had applied the prophylactic procedure in our treatment for ARN. We aim to access the efficacy of the treatment strategy of ARN and the correlated factors to the outcomes.

The primary purpose of this study is to evaluate the clinical performance of the Arcos Revision Stem system, determine the stability of the implants, and evaluate any relationship between Paprosky bone defect level and the success of the Arcos Stem.

Abstract Introduction For local reconstruction on upper extremity or as a distant micro vascular flap Lateral arm free flap is an excellent source of tissue with the advantages including short operation time, thin pliable tissue, non-dominant vessel and minimal donor site morbidity, it fulfills the goal of an optimal reconstruction of form, function, and aesthetics .Here the investigator share his experience of lateral arm fasciocutaneous flap, investigator found it effective in covering defects secondary to trauma, malignancy and burns. Methods A retrospective data analysis was done to analyze our usage of lateral arm flap. This included patient's age, sex, primary problem, area involved, size of the flap and outcome of the flap 3 weeks post operatively. For free flaps this also included the recipient artery used for anastomosis and the number of veins anastomosed. Results There were 21 flaps done over a period of five years. This included 11 free flaps and 10 pedicle flaps. Average size of free flap was 12x5 cm and that of pedicle flap was 8x5 cm. In the free flap group, there was failure in 2 flaps both of which were due to arterial anastomoses in zone of injury. In the pedicle flap group however, there were no failures. Conclusion Lateral arm flap is a reliable flap with consistent anatomy that can be used for coverage in different parts of the body.

Patients treated operative for Proximal humeral fractures with angular stable device (Philos plate or ALPS-PHP)

This study aimed to evaluate the levels of interleukin 10, interleukin 6, interleukin 32 and tumor necrosis factor-alpha (TNF-α) in saliva of children with early childhood caries.

In the following randomized non-crossover study, the investigators test the hypothesis that directly measured mucosal pressure differ between the laryngeal mask airway (LMA) Supreme and the i-Gel in paralyzed anesthetized females. Thirty females aged 19-65 years were randomly allocated to receive either the size 4 LMA Supreme or i-Gel for airway management. Microchip sensors were attached to the LMA Supreme/i-Gel at four locations corresponding to the A, base of tongue; B, distal oropharynx; C, hypopharynx; and D, pyriform fossa. Insertion success rate and oropharyngeal leak pressure were also measured.

The investigators aim to measure the blood levels of certain metals in a group of patients all of whom have had a ceramic on metal total hip replacement. This new bearing surface (joint) is relatively new and the investigators are currently following up the largest cohort in the world. Clinical results are currently excellent at 2 years in all patients, however the investigators are mindful of the lessons learned from the high failure rate of several designs of metal on metal hip replacements as well as several in vitro reports and one in vivo case report of elevated metal levels in this particular implant. The investigators feel it is important to measure the metal ion levels in our group to ascertain and compare these with reference standards. Once performed the investigators can relate ion levels to function and x ray changes and provide useful longterm data to the patients and the wider medical community as to whether this bearing surface is safe in the long term or whether it's use should be abandoned. This is useful as there are numerous groups implanting this device in the UK and in addition it has just been awarded FDA approval in the USA - its use is likely to flourish.

The investigators administered different kinds of colloids before transfusion of red blood cell to patient undergoing total hip replacement arthroplasty. The investigators will compare the differences of changes in rotational thromboelastometry (ROTEM) data among them.

The purpose of this study is to collect information on complications and survivorship of patients implanted with the Oxford™ Meniscal Unicompartmental Knee System at multiple sites in the United States.

The use of bisphosphonates during childhood to ameliorate the skeletal abnormalities associated with osteogenesis imperfecta, idiopathic juvenile osteoporosis, fibrous dysplasia of bone and cerebral palsy. There is paucity of long-term studies among children regarding the safety and efficacy of bisphosphonates. Osteomyelitis and necrosis of the jaws has been was discovered and reported as a serious adverse event in bisphosphonate-treated adults patients. To our knowledge, there is no report in the literature about osteomyelitis in children treated with bisphosphonates and the influence of long term treatment with bisphosphonates on children's jaws, the reaction to extractions and on the oral cavity. Aim of the study: to examine the influence in the oral cavity of bisphosphonate in children