All clinical trials

CVJ anomalies affecting skeleton might lead to the pressure on the neuraxis, and disturbance of the cerebrospinal fluid circulation and blood supply. The patients undergoing surgeries on CVJ might develop airway complications in immediate postoperative period warranting urgent reintubation or emergency tracheostomy. Reintubation is usually difficult in immediate postoperative period due the fixation of cervical spine and gross upper airway oedema due to prolonged surgery in prone position. This will be the first prospective observational study to find out the risk factors related to patient, anaesthesia, radiological findings and surgical procedure to predict extubation failure in patients undergoing CVJ surgeries.

Contrast-enhanced ultrasound(CEUS) of carotid artery plaque is a novel method that enabled direct visualization of neovessels in the vulnerable plaque. Plaque enhancement with CEUS showed correlation with the histologic density of neovessels within the carotid plaque and the previous cardiovascular events. Vulnerable plaques with a high risk of thromboembolic complications and rapid progression is associated with acute ischemic stroke. The prognostic value of vulnerable carotid artery plaque depicted with CEUS has not been fully investigated. The purpose of this study is to define prognostic value of plaque enhancement on carotid CEUS in acute stroke patients. Research question is; in acute ischemic stroke patients with ipsilateral carotid plaque as probable etiology of stroke, is the presence of carotid plaque enhancement on CEUS independent predictor of future stroke.

This study aims to : Diagnosis of Systemic fungal infections in ICU patients. Detection the most common fungal species in ICU. Detection of in vitro antifungal sensitivity pattern

This is a 5-year observational study recruiting sixteen hundred and fifty individuals between the ages of 50 and 90 with different types of dementia as well as a comparison group of six hundred and fifty aged matched individuals without cognitive deficits. Participants will be recruited at sites across Canada and will undergo assessments and provide biological samples at baseline and two years after baseline.

Glioblastoma is the most common adult brain tumour with approximately 2000 new cases each year in the UK. Optimal treatment consists of surgery followed by radiotherapy and chemotherapy but despite this survival is poor with only 10% of patients alive at 5 years. Standard imaging (MRI and CT) may not detect the full extent of tumours before treatment and it can be difficult to assess how the tumour is responding to treatment. The study aims to evaluate more advanced imaging techniques to see if they are better at mapping the whole tumour and assessing response to treatment. Two different imaging techniques will be assessed: Positron Emission Tomography - Computed Tomography (PET-CT) uses a mildly radioactive compound injected into the patient which is taken up into brain tumour cells and shows up as a bright spot on scans. Brain tumours affect blood supply and how much fluid is in the brain tissue as well as how freely fluid can move around. Advanced MR imaging known as multiparametric MRI will be used to look at these additional features. This extra information may help improve planning of radiotherapy and assessing how tumours respond to treatment. Twelve adult patients with glioblastoma undergoing radical treatment will be recruited over a 12 month period. Each patient will have standard MR imaging before radiotherapy (after surgery) and 4-6 weeks following completion of radiotherapy. They will also have advanced MRI and PET/CT before, during and after treatment. The aim will be to study if this is feasible and could potentially improve radiotherapy planning and response assessment. Imaging will be interpreted by both imaging and brain tumour treatment experts.

A wristband device intended for use as a standalone device, designed for the measurement of intermittent blood pressure, as well as other physiological signals. The device is intended to be worn in day to day life by individuals suffering from hypertension or other conditions where monitoring of blood pressure is of importance.

Major vascular operations put the body under stress. We are trying to find out if the general health of a patient and the stress resulting from surgery can lead to the development of complications after surgery as well as increase the length of time spent in hospital. There is evidence to suggest that patients who are frail have a higher risk of developing complications after major surgery. Our aim is to ask you simple questions about your physical ability to perform daily life activities, assess your general health condition and ask you to do simple tasks such as drawing a clock or walking for a short distance to assess your speed of walking. Our main aim is to identify a tool that will assist us to identify patients who are at risk of frailty.

The purpose of this study is to evaluate the establishment of immunological memory between the 3 different infant vaccination schedules with the 13-valent pneumococcal conjugate vaccine (PCV13) currently in use. We aim to determine the optimal schedule for the establishment of antigen-specific memory B-cell pool, which may serve as a correlate for longevity of immunological memory against vaccine serotypes. Moreover, we will study the transcriptome profiles expressed by peripheral lymphocytes during each immune response in an attempt to reveal immunological mechanisms beyond the antibody and circulating B cells level.

As the proportion of elderly population increasing over the last years, polypharmacy and drug-drug interactions (DDI) has been a common health care problem. This study will be performed to find out to prevalence of polypharmacy, inappropriate drug use and DDIs in in elderly patients presenting to a outpatient cardiology clinics.

Glioblastoma is the most common malignant brain tumor in adults. The primary treatment consists of maximal tumor removal followed by radiotherapy (RT) with concomitant and adjuvant temozolomide. Tumor recurrence after chemoradiotherapy has previously been shown to be predominantly within or at the margin of the irradiated volume, but distant failure are not rare, especially in patients with MGMT methylation.Traditionally, RT has been planned based on on planning CT with co-registered postoperative MRI, with the addition of a clinical target volume margin of 2-3 cm to account for infiltrative odema. To better characterize the disease, more specific physiological and/or metabolical markers of tumor cells, vascularization and hypoxia measured on multiparametric MRI as perfusion, diffusion and spectroscopy alongside with PET tracer like Fluoroéthyl-L-tyrosine ([18F]-FET) are now available and suggest that aggressive areas, like uptake of PET tracer and vascularity are present outside areas of contrast enhancement usually irradiated. These informations could be incorporated to optimize the treatment of radiotherapy.