View clinical trials related to Hypersensitivity.
Filter by:Currently when defining the upper limit of normal (ULN) or 99th percentile of a troponin assay manufacturer's use a healthy population traditionally aged 18-40. The 99th percentile value is the recommended value to use when diagnosing patients with an acute myocardial infarction. With the advent of the new highly sensitive troponin assays it has become clear that many patients have a troponin level above the 99th percentile when they have not suffered a myocardial infarction. We believe part of the problem with interpreting the the troponin values for patients is that the 99th percentile value which determines the ULN has been derived from population that is very different to the hospital population of patients. This study aims to demonstrate what the 99th percentile is for the population of people who use the hospital services who are traditionally older and have more comorbidities when compared to the population traditionally used to define the 99th percentile of a troponin assay. An amendment was approved to follow-up patients' clinical outcomes at 1 year using NHS Digital data.
To investigate the effects of desensitizing agents on the dental bleaching process, testing the hypothesis that they may prevent dental sensitivity.
This research study will examine how ethnic/racial background, body composition (%body fat), and the location of body fat affect the ability of the hormone insulin to promote uptake of blood sugar in persons who are 19 to 45 years of age. When insulin is ineffective in promoting blood sugar uptake, this condition is termed "insulin resistance." Insulin resistance plays a major role in the development of chronic metabolic diseases (such as type 2 diabetes, cardiovascular disease, and cancer), many of which differ with race. Previous studies suggest that insulin resistance is higher in African-Americans (AA) vs. European-Americans (EA). However, results from these studies remain unclear due to different testing measures used for insulin resistance as well as differences in body fat between individuals. Results from this research study may help explain why insulin resistance differs with genetic background and may guide development of personalized treatment strategies with implications for several chronic metabolic diseases (e.g., type 2 diabetes, cardiovascular disease, and cancer).
This randomized, controlled clinical trial, triple-blind, split-mouth type was conducted aiming to assess the absolute risk of sensitivity with and without sonic activation of a desensitizing gel previously to the in-office bleaching in adults.
The purpose of this study is to see if the recruitment of a certain cell type (the alpha 4 integrin (CD49d) expressing neutrophil) during a nasal allergen challenge can be inhibited by pretreatment with an FDA approved leukotriene antagonist (montelukast).
Bleeding on probing demonstrated to have high specificity with certain level of sensitivity to detect periodontal disease. Again, understanding the weak hemidesmosome attachment to the implant surface is imperative to discern on the probe penetration extent and subsequent bleeding. In the presence of inflammation, bleeding should be present indicating high sensitivity when probing deeper sites; nevertheless the lack thereof in healthy condition does not seem to translate high specificity. In this sense, it is noteworthy to mention that the mucogingival shift after implant placement often decreases the presence of keratinized mucosa, triggering a greater inflammatory condition on the peri-implant tissues. Thereupon, bleeding on probing, although might reliably indicate presence of disease, it does not seem to be a suitable diagnostic parameter. On the other side, suppuration characterizes the necrosis of peri-implant tissues, being rich in polymorphonuclear cells and as such, a sensitive indicator of bone turnover. In this sense, it must be noted that, if detected in early stages where bone resorption has not occurred yet, it might be a consequence of a foreign body reaction (i.e., residual cement or floss). Therefore, in the diagnosis of peri-implantitis, radiographic examination must be always incorporated to the clinical assessment as the 'gold standard'. Hence, the aim of this case-control study was to assess the diagnostic accuracy of peri-implantitis-related clinical parameters compared to otherwise healthy dental implants.
The investigation serves the identification of pulmonary hypertension (PH) among patients with hypersensitivity pneumonitis (HP). The exact prevalence of PH in HP is unknown. Data from South America indicate that the prevalence of pre-capillary PH amongst patients with HP is higher than 20%. There are no reliable data from Europe so far. According to the investigators previous analysis, more than 400 HP patients have participated in pulmonary rehabilitation at least once in the past 10 years at Klinikum Bad Gleichenberg (Rehabilitation Center for Agricultural Workers in Austria). This collective of patients is to be invited to participate in the study. A diagnostic algorithm will be applied in the clinical trial, in the case of clinical suspicion the diagnosis of PH will be confirmed by right heart catheterization. Besides the determination of the prevalence of PH in patients with HP the investigators aim to assess the reliability of non-invasive methods (e.g. Echocardiography, ECG...) to predict PH.
In the last few years, a new clinical entity has emerged which includes patients who consider themselves to be suffering from problems caused by wheat and/or gluten ingestion, even though they do not have celiac disease (CD) or wheat allergy. This clinical condition has been named non-celiac gluten sensitivity (NCGS), although in a recent article, the investigators suggested the term "non-celiac wheat sensitivity" (NCWS), because it is not known to date what component of wheat actually causes the symptoms. The clinical picture of NCWS is characterized by combined gastrointestinal (bloating, abdominal pain, diarrhea and/or constipation, nausea, epigastric pain, gastroesophageal reflux, aphthous stomatitis) and very different extra-intestinal and systemic manifestations (headache, depression, anxiety, 'foggy mind,' tiredness, dermatitis or skin rash, fibromyalgia-like joint/muscle pain, leg or arm numbness, and anemia). Nowadays, there no data about a possible relationship between gynaecological disorders and food ingestion and food allergy/intolerance. Therefore, the aims of the present study are to investigate 1) the prevalence and characteristics of gynaecological disorders in NCWS patients compared to CD and irritable bowel syndrome (IBS) controls, and 2) the modification of such disorders in NCWS patients after a gluten (wheat)-free diet.
Teeth sensitivity is the most popular symptom when using At-Home tooth whitening. Tri calcium phosphate containing pastes may affect the efficacy and postoperative sensitivity associated with At-Home vital tooth whitening using 20% carbamide peroxide
To determine if a brief primary care intervention can educate under-resourced and minority parents about discipline in a way that is culturally sensitive.