Active clinical trials for "Hypersensitivity"

IgE-mediated food allergy can manifest with reactions ranging from hives to anaphylactic shock. The diagnosis is based on the confirmation of sensitization to the food allergen by skin tests (prick) and the determination of specific IgE directed against the food source and molecular allergens. The gold standard remains the oral provocation test, which is performed in a hospital environment. Once the diagnosis is made, an elimination diet is still considered as the cornerstone of treatment for most food allergies. While some allergies, such as cow's milk or egg, tend to resolve spontaneously, others, such as allergy to pecan nuts, show a tendency to be persistent. In addition, pecan allergy is often characterized by potentially serious clinical reactions, compared to other foods, which can even be life threatening. In our clinical practice, the investigators found that patients with allergies to pecan nuts often present with severe hypersensitivity reactions when challenged orally to this food. Beyond this information, there are few studies regarding pecans. The investigators decided to retrospectively evaluate the results of oral food challenge and of the allergy work-up in our patients sensitized and allergic to pecan nuts, to better understand the current epidemiology of such food allergy.

Observational study in two medical-surgical intensive care units of the Clermont-Ferrand University Hospital to develop a composite score for prediction of 72h-extubation failure in patients at risk of extubation failure.

We aim to examine, whether hospitalization is associated with higher high-sensitivity cardiac troponin T (hs-cTnT) serum concentrations in patients without a cardiac disease.

Food Allergy (FA) is one of the most expensive allergic disorders in the pediatric age, and affecting up to 10% of children worldwide, it is recognized as a global health problem. The Oral Food Challenge (OFC) is the gold standard for FA diagnosis, but it is time-consuming, expensive, and potentially dangerous, as it can determine severe anaphylaxis. In addition, causing long-lasting impact on patient anxiety and mental health due to the physical duress and health risks involved with its application, OFC strategy is little applied in clinical practice with consequent diagnostic errors and delays. The goal of the Naples Pediatric Food Allergy (NAPFA) score is to develop a new clinical score including the main anamnestic, and clinical features for the easy identification of pediatric FA in primary care setting.

This is a protocol for prescreening of participants who would like to be in clinical studies in our Center at Stanford.

This is a registry of participants who are interested in being screened for clinical trials at a single site.

Mold allergies are becoming increasingly important among the population. Increasing amounts of fungal spores are analyzed in air-samples because of urbanization, industrialization of food products and climate change. Mold also grows indoor and hence lead to additional health complaints. Alternaria alternata, and its only major allergen Alt a 1, is the most important fungus for allergy sufferers. Alternaria alternata can not only cause allergic symptoms but can also cause intensified asthmatic symptoms. Besides Alternaria alternata, there are over 700 other species of the genus Alternaria. The influence of these other species on allergic symptoms is poorly understood. Furthermore, prevalence and incidence of an allergy to Alternaria alternata among the Austrian population is not known. Estimates range between 1-5% among the Austrian population. This study aims to further investigate the incidence and characteristics of an allergy to Alternaria in Austria. This will be investigated with the help of participants (50 Alternaria allergy sufferers and 20 non allergic participants), spore counts in Austria and crowd-sourced symptom data.

The goal of this observational study is to evaluate, between patients with arterial hypertension and non hypertensive control group, the prevalence of hidden hypercortisolism the relationship between organ damage and oxidative stress level, cortisol secretion degree, sensitivity and peripheral activity

Sub-study of the main Pulmonary Fibrosis Biomarker (PFBIO) cohort (NCT02755441), recruiting patients with an MDT-diagnosis of hypersensitivity pneumonitis (HP). Patients are included for the collection of blood samples and regular clinical data. The database and biobank will be available for studies of HP, and can be directly compared to the main PFBIO cohort, which has recruited patients with Idiopathic pulmonary Fibrosis (IPF) since 2016. Biomarkers will be assessed as diagnostic and prognostic. Further subtyping of HP, based on blood markers (including precipitins) will also be possible with the PFBIO-HP project.

Thirst is a perception that provokes the desire to drink liquids. It is a multidimensional symptom that is described in terms of intensity and distress and is associated with dry mouth, called xerostomia. Thirst is poorly recognized in intensive care unit practice. Yet, research has shown that it is one of the most prevalent, most intense, and least well treated symptoms in intensive care patients. Thirst and dry mouth are associated with physical discomfort in the ICU. However, thirst often goes unnoticed and untreated. In this context, The investigators aim to conduct a prospective observational study in mechanically ventilated patients able to communicate to better understand the prevalence, intensity, mechanisms and prognostic value of thirst as well as dry mouth sensation. Primary objective: to assess thirst in mechanically ventilated patients. Primary endpoint: visual analog thirst scale from 0 mm (no thirst) to 100 mm (maximal thirst) Patient 18 years of age and older Patients undergoing invasive mechanical ventilation for at least 24 hours at one of the participating centers No objection to participation in the study During the study period, patients from 3 resuscitation sites are systematically screened for inclusion in the study on a daily basis, between 9:00 am and 12:00 pm. Subjects meeting the inclusion and non-inclusion criteria (with the exception of the delirium test) will be informed of the study by the principal investigator or any other investigator trained and declared in the research. The oral information will be completed by the delivery of an information note. Patients who wish to participate in the study will be given up to 24 hours to consider their decision. If the patient agrees to participate in the study, his or her non-opposition is collected by the investigator on a dedicated form in duplicate. One copy will be given to the patient, and the other will be kept in the department with the research documents. In case of suspected confusion, a delirium screening test (CAM-ICU) will be performed to verify the patient's eligibility. If the test confirms the presence of confusion, the patient will be excluded from the study. The information and the collection of the non-opposition will be notified in the patient's medical file. Following their inclusion, patients are assessed only once during their stay in the ICU: the day of inclusion. Once enrolled, patients are asked to rate the intensity of thirst by placing a cursor on a 100 mm visual analog scale (VAS) bounded on the left by "not thirsty" and on the right by "intolerably thirsty". If a patient understands the principle of the assessment but is unable to move the VAS cursor himself, the observer assists the patient by holding the scale and supporting the patient's forearm. If the subject is unable to move his or her arms (as in some cases of severe neuromuscular impairment), observers are allowed to manipulate the VAS slider following the patient's instructions. However, this is not recommended and should be avoided whenever possible. The slider should never be adjusted directly or solely by the investigator. The visual analog scales for dry mouth, anxiety, pain and dyspnea will be performed as part of the protocol after the thirst assessment. The oral status, the search for edema or skin folds and the Revised Oral Assessment Guide (ROAG) score for intubated patients will also be performed at the same time. An average of 20 minutes is necessary to perform all these procedures.