Active clinical trials for "Sinusitis"

The purpose of this study is to determine if acquired (partial) Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) deficiency contributes substantially to the pathogenic mechanisms underlying Chronic Rhinosinusitis (CRS), creating a localized environment that impairs mucociliary clearance (MCC).

In case of surgical procedures in the head and neck region, MRI in combination with CT of the bone is often the standard modality to visualise bony landmarks for planning, navigation and risk assessment. An important downside of a CT scan is the associated radiation exposure, especially in children. An additional downside is the sedation or general anaesthesia needed for both the MRI and CT scan session in very young children. These downsides could be removed if the CT scan can be substituted by an MRI sequence that can provide the same information as CT. This project aims to determine the feasibility of recreating CT like images of the craniofacial bones from MRI images using machine learning techniques.

Rhinitis, or inflammation of the nasal mucosa, can present with nasal obstruction, nasal discharge, itch or sneezing. If the sinusal mucosa is involved as well, it is called rhinosinusitis and facial pain or loss of smell is possible. Several causes are known, such as an underlying allergy ("allergic rhinitis", AR). If at least 2 symptoms are present for at least 12 weeks, it is called "chronic rhinosinusitis" (CRS). Up to 2/3 of the AR and CRS patients have symptoms upon exposure to triggers such as sudden temperature changes, smoke, fragrances… a phenomenon called "nasal hyperreactivity" (NHR). It is currently not clear why some patients suffer NHR while others do not. In this study, the investigators want to identify the mediators associated with NHR in patients with allergic rhinitis, chronic rhinosinusitis and healthy control subjects.To do so, participants will be provoked with cold, dry air in order to objectively diagnose NHR. Before and after provocation, the peak nasal inspiratory flow will be measured and samples will be collected (nasal secretions, biopsies).

Impact of chronic rhinosinusitis on the index of ciliary beat efficiency using fluorescent nanosticks

Measure the incidence of the maxillary sinus membrane perforation during the Osseodensification crestal sinus grafting procedure.

The purpose of this study is to learn about using the imaging to make images of the lungs and nose with the long-term goal of the research leading to potential treatments and new therapies for patients with cystic fibrosis.

This is a cross-sectional study of up to 100 subjects who are undergoing clinically indicated sinus procedures to treat chronic rhinosinusitis. Participants will be asked to donate leftover sino-nasal secretions, sino-nasal tissue and blood as well as undergo partial characterization. As optional extensions of the main study, participants may also undergo a biopsy of extra sino-nasal tissue for additional tissue analysis and/or a more detailed characterization visit performed in the UCSF Airway Center Research Center (ACRC).

The investigators will conduct a prospective observational study of non-invasive S. pneumoniae infections in Belgium and characterize serotype distributions to evaluate national vaccination programs.

An inflammatory component associated with AMD has been highlighted by genetic associations of predisposition to AMD, as well as by the recently demonstrated link between AMD and periodontitis. Some patients followed at the Fondation Adolphe de Rothschild Hospital for wet AMD seemed to show an improvement of neovascular activity (less need for intravitreal injections of anti-VEGF) after treatment of their sinusitis. The investigators would therefore like to assess the link between AMD and sinusitis, an infection close to the site of AMD.

A prospective, single arm, multicenter study designed to demonstrate that the Sinopsys® Lacrimal Stent can safely create transcaruncular access to the ethmoid sinus to enable sinus irrigation and reduce symptoms in patients with moderate to severe chronic rhinosinusitis.