There are about 6915 clinical studies being (or have been) conducted in Austria. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
Aim oft he study is to compare two different devices for cerebral oximetry (FORE-SIGHTTM Monitor (CAS Medical Systems, Branford, Connecticut, USA and INVOSTM Somanetics, Troy, Michigan, USA) in patients undergoing surgical carotid thrombendarterectomy (cTEA) with crossclamped internal carotid artery (ACI). All procedures will be performed in regional anesthesia, therefore the patients will be awake and direct neurological examination during the procedure will be possible, giving information how the drop in cerebral saturation (measured with INVOS and FORESIGHT both on the same patient) correlates with any clinical symptoms. We expect to see a difference in the total drop and in the delay of the drop of cerebral oxygen saturation, making it possible to detect varieties in specificity and sensitivity of both devices compared to neurologic examination in the awake patient.
The aim of the study is to intensify the follow up of patients with pulmonary arterial hypertension via modern imaging guided methods in due consideration of the possibilities of three-dimensional echocardiography in order to optimize their specific therapy. The hypothesis is that the increased use of modern imaging guided tools is essential for the follow up.
Patients with atypical symptoms of objectified gastroesophageal reflux disease will be treated by full-thickness gastroplication and the effect of this intervention will be measured by questionnaires and clinical diagnostics (for example pH/MII).
The RIPAT study is a prospective, randomized, double-blind study organized by the neurovascular group of the Clinical Department of Neurosurgery of Innsbruck Medical University, Innsbruck, Austria. Patients aged 18+ in whom the treatment of an un-ruptured intracranial aneurysm is indicated are eligible for study participation. Prior to aneurysm treatment, with the patient already under general anesthesia, the blood supply to an arm will be restricted for 3x 5minutes by inflating a standard blood pressure cuff. The study hypothesis is that this "remote ischemic preconditioning" maneuver is able to prevent a stroke during the following treatment of the aneurysm.
Nasal mucus as first line defense barrier of the nasal mucosa contains a variety of proteins that act as functional units. We recently showed that the nasal mucus proteome between allergic rhinitis patients and healthy controls is significantly altered. The aim of the present project is to show changes in nasal mucus proteome between allergic rhinitis patients and healthy controls over the pollen and non pollen season and to further determine whether and if so how the proteome changes under immunotherapy. Patients and healthy controls will be enrolled at two time points namely during the pollen season and out of the pollen season. Statistical differences will be determined within the groups and between the groups as well as impact of immunotherapy on patients undergoing therapy. Mucus will be collected with a special suction device equipped with a mucus trap. Then, proteomic analysis will be performed by LC MS/MS mass spectrometry. Database search will identify distinct proteins and their function, origin etc. will be annotated. Protein groups will be analyzed through pathway enrichment and cluster analysis. Furthermore, mechanisms of immunotherapy in responders and success or failure of therapy could be determined. These could lead to the identification of potential biomarkers.
The pseudoexfoliation (PXF syndrome) is caused by production and deposition of extracellular material in the anterior chamber of the eye as well as in other tissues of the body. Approx. 70 million worldwide have a PXF syndrome. After cataract surgery a decentration and subluxation of the intraocular lens (IOL) happens more frequently than in the general population due to a higher incidence of zonular weakness and an increased capsular fibrotic reaction. Decentration, tilt and / or rotation of the lens can reduce the quality of vision. It is believed that the design of the implanted IOL, more precisely the front surface of the IOL has an influence on the extent of capsular fibrosis and contraction. Especially in presence of capsular instability, as it is in patients with Pseudoexfoliation syndrome the design of the IOL has an effect on the post-operative stability. In this study, two different IOL models are compared in terms of their stability. The "Tecnis 1-piece ZCB00" (AMO, USA), with a concave lowering comprising the lens edge and the "Acrysof SA60AT" (Alcon, USA), with a biconvex design are compared. Forty eyes of 20 patients are planned to be included in this study. One eye receives the "Tecnis ZCB00 1-piece "(AMO, USA), while the other eye receives the"Acrysof SA60AT "(Alcon, USA). In which eye which IOL is implanted, is assigned by randomization. To measure the decentration, tilt and rotation of the IOL an examination will be performed before the operation and there will be follow-ups one hour after the operation of the first eye, one hour after the operation of the second eye, three months and twelve months after the operation on the second eye. All measurements will be done without touching the eye.
More and more patients like to achieve complete spectacle independence after cataract surgery. Two possibilities that are particularly often used today are on the one hand multifocal lenses, and on the other hand the concept of monovision (in doing so one eye is adjusted for closeness and the other focuses for distance). The drawback with multifocal lenses is that some patients are bothered by glare phenomena, the disadvantage of monovision is that some patients lose a little of their stereo vision. The aim of this study is a direct comparison of these two methods. Therefore 70 patients are included in 2 groups. In one group, patients receive on both sides a multifocal IOL with a near addition of +1.5 D and the patients in the second group receive monovision. One hour, 1 week and 3 months after surgery, patients are invited and tests for visual accuity are performed for near vision (40cm), intermediate vision (80cm) and distant vision (400cm). Furthermore, contrast sensitivity and stereopsis of patients is assesed. Additional measurements for detecting the tilt of the lens will be performed.
Background: Meta-analyses of large randomized trials proved the superiority of preoperative short course radiation and surgery, as compared with surgery alone. Short course radiation results in a 50% reduction in terms of local relapse in stage II and III rectal cancer patients. Patients with complete pathological remission additionally show a significant survival benefit. Complete pathological remission (pCR) occurs in 8% after preoperative radiation and in >16% if the interval between radiation and surgery is at least 8 weeks. It is generally accepted that mutations in the TP53 gene represent a crucial defect in the apoptosis pathway. Radiation therapy is suggested to act via induction of apoptosis in irradiated cells. Therefore, it is expected that a defect in the TP53 gene has an effect on the success of radiation therapy. Currently available imaging tools are hardly able to diagnose response to radiation therapy correctly, as this does not essentially correlate with tumor size. Method: Aim of this prospective observation study is to strengthen the hypothesis that the TP53 genotype is a promising marker to predict response to radiation therapy in rectal cancer patients. Consequently, the expected results will justify prospective, randomized intervention trials to obtain level of evidence I for the p53 marker hypothesis. Trial endpoint is downstaging and pCR rate. Tumor stage and pathological remission will be evaluated by MRT and pathohistology and correlated to the TP53 genotype of the diagnostic biopsy. Additionally, we will investigate the applicability of novel imaging modalities in magnet resonance tomography to monitor response to radiotherapy. The objective of this study is - to evaluate the effect of a genetic tumor marker (TP53 genotype) on the response to preoperative short course radiation (in terms of downstaging and pCR rate) - to evaluate the applicability of novel magnet resonance tomography imaging modalities to monitor response to preoperative short time radiation. Conclusion: The prospective evaluation of the potential predictive marker TP53 may bring us one-step closer to an individualized therapy regimen, which allows the restriction of preoperative radiation in rectal cancer to those patients who will benefit.
The aim of the present study is to establish a modified minimally invasive surgical technique for sinus floor augmentation with a residual bone height of 3-6mm. Hypothesis: The investigators expect that the present surgical technique allows to achieve an adequate implant bed of at least 10mm height after a healing period of 3-5 months. Further the modification of the technique enables a reduced patient stress level.
The aim of this study is to investigate the association of sonographic and histological features of the plaque among each other and with biomarkers of cardiovascular risk. The predictive value of these factors concerning the long-term clinical outcome after carotid endarterectomy will also be assessed. This may help to improve the identification of patients with carotid artery stenosis who will benefit most from carotid endarterectomy. The investigators major hypothesis is that the morphology of carotid plaques is associated with objectifiable sonographic parameters, in particular with the greyscale median. Second, the investigators hypothesize that sonographic and histological plaque morphology are associated with certain biomarkers of cardiovascular risk. Identification of 'vulnerable plaques' on the basis of a peripheral blood draw and a sonographic investigation may enable the treating physician to focus resources on patients who will benefit most form therapeutic interventions for primary prevention of ischemic stroke.