There are about 36633 clinical studies being (or have been) conducted in France. 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.
The objective of this research is to study the correlation between the portosystemic pressure gradient and azygos blood flow measured by MRI.
Exacerbations of the disease are a hallmark of Chronic Obstructive Pulmonary Disease (COPD), affecting the decline of pulmonary function, quality of life and increasing morbidity. The use of validated biomarkers could help to identify the etiology of exacerbation and to prescribe antibiotherapy when indicated. The analysis of exhaled air allows measuring different volatile organic compounds (VOC) which reflect local or systemic inflammation and oxidative stress. The relationship between the presence of some of these compounds and the exacerbation of COPD has never been studied. The aim of this study is to identify a cluster of VOC in COPD patients during an acute exacerbation of the disease, compared to a stable condition (3 months after discharge). Investigators also will seek for a relationship between VOC and the etiology of exacerbation (bacterial, viral, inflammatory).
- This prospective study aims to better characterize inner ear's perilymphatic structures with Magnetic Resonance Imaging using contrast media and delayed injection in healthy subjects - MR Perfusion Imaging will be assess in both cochlea as well - Primary auditory brain pathways will be evaluated through MR diffusion imaging
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease which involves respiratory muscles and can lead at short term to respiratory failure. The occurrence of respiratory failure is associated with morbidity and an increased mortality. To date, respiratory muscle weakness is predicted from the reduction of vital capacity, maximal inspiratory force, nocturnal symptoms and hypercapnia. Even taken together, the predictive value of these indices is low. The investigators hypothesize that an endurance test of diaphragmatic work would be more sensitive to respiratory muscle involvement than maximal respiratory force. Consequently, the investigators assessed diaphragmatic performance through an isocapnic hyperventilation test (IHT) in patients at the onset of ALS and, then regularly up to the occurrence of respiratory failure. The investigators make the hypothesis that IHT will be altered earlier than maximal inspiratory force
The stimuli used in the evoked potentials are electrical or laser. They are started and synchronized with the collection of the EEG by signals TTL (transistor-transistor logic). Investigators propose to validate a pneumatic stimulator delivering the compressed air sync with the EEG. It has two advantages over existing stimuli: Is capable of inducing in patients an allodynic response, excessive, painful, in response to a stimulation painless rarely obtained with laser or electrical stimuli. Therefore, the pneumatic stimulation is a means to study allodynic evoked potentials unknown to date. It must be possible with a single stimulator to explore non-painful sensations and allodynic sensation , compare them with one device. The differences are the abnormal responses. This validation assumes evoked potential recording 1. somatosensory (low stimulation) then 2. allodynic (only in patients). The study therefore provides for the registration 100 potential for each of these two modalities in patients and only for the painless pneumatic modality in volunteers.
The indications liver cancer surgery currently booming due to the increase in surgical techniques and instruments for a more secure resection of liver tissue with a significant reduction in bleeding or surgical complications. This allowed to expand surgical indications in the most fragile patients so assuming optimized anesthetic care. So far, the technique of analgesia reference to this surgery remains administration of morphine analgesia via a device controlled by the patient (PCA) for epidural analgesia is against-indicated because of induced bleeding disorders by surgery. Rafi then McDonnell in 2007 have described a new technique of loco regional anesthesia, the abdomen of the Transversus Abdominis Plane (TAP) nerve block(TAP), which allows selective anesthesia of the abdominal wall. But parietal pain related muscular and nervous sagging surgical approach represent a significant share of post operative pain. This study proposes an evaluation of the abdomen transverse blocks in hepatectomy.
Rheumatoid arthritis (RA) is the most common chronic inflammatory joint disease in adults and is characterized by chronic inflammation of the joints leading to their destruction, resulting in a major loss of function. The investigators propose a pilot study for studying changes in bone microarchitecture with High Resolution peripheral micro Computerized Tomography (HR-pQCT) in patients with RA treated with anti-TNF(Tumor Necrosis Factor), with the measurement of micro-architectural parameters in subchondral area near an inflammatory joint during the first 12 months of initiation of an anti-TNF therapy (Infliximab®, Etanercept®, Adalimumab®).
Pulmonary hypertension is a rare condition that leads to right ventricular dysfunction and premature death. Only modest improvements of outcomes have been observed with the current available advanced specific drug therapy. Pulmonary hypertension advanced therapy is also expensive and leads to frequent adverse effects, sometimes serious. Results from a pilot study, the first-in-man experience of pulmonary artery denervation, demonstrated a clinical improvement in 13 patients with severe pulmonary hypertension despite optimal medical management. However this single non-randomized study requires confirmation. The investigators propose a prospective multi-center, randomized, single-blinded trial. Its main objective will be to assess, in patients with uncontrolled pulmonary hypertension despite optimal medical management, the efficacy of pulmonary artery denervation in reducing mean pulmonary artery pressure (mPAP) at six months, compared to continued medical treatment following a simulated (sham) procedure. The principal evaluation criteria will be the mPAP change (in mm Hg) as measured by right heart catheterization. The study will run for 18 months and it will be necessary to recruit 50 patients. All adult patients (with the exception of pregnant women and individuals unable to receive an appropriate information and to give their free and informed consent) with uncontrolled pulmonary arterial hypertension despite optimal medical management will be invited to participate, in the absence of any exclusion criteria. The investigators will also measure changes in clinical, biological, echocardiographic and hemodynamic prognostic markers in both groups.
The acute pain care, in particular after breast cancer surgery must be early and quickly effective, because a severe postoperative pain increases the risk of chronic pain and exposes to a risk of important embarrassment for the realization of simple daily movements. Associated to conventional analgesics administered by systemic way, a local anesthesic (ropivacaine) can be continuously infused (Continues Cicatricial Perfusion CCP) in the operating wound by a multi-drilled catheter by means of a elastomeric diffuser set up in the surgical unit by the surgeon at the end the surgical procedure. Besides the control of the postoperative acute pain, the local anesthesic could intervene in the prevention of the chronic pain, the early recovery, the reduction of the neuropathic pains and the decrease of needs in morphine after mastectomy. The duration of hospitalization being lower than 48 hours for this type of surgery, the investigators envisage an immediate follow-up in the Units of Care then at home, what will require a training of the hospital actors and at home (patient, family, visiting nurse, general practitioner). Although proposed for several years, the CCP after breast surgery is still a little spread technique and few works had evaluated the pain at rest and at mobilization after mastectomy, the early rehabilitation, and to spread its use towards home, that is why we propose a randomized double-blind study ropivacaine / placebo in patients after mastectomy.
This is a single-arm, open-label, multicenter study of the efficacy of UVADEX® (methoxsalen) Sterile Solution in conjunction with THERAKOS® CELLEX® Photopheresis Systems (ECP) in pediatric participants with steroid-refractory aGvHD. The study is composed of Screening, Treatment, and Follow-up Periods.