View clinical trials related to Primary Dysautonomias.
Filter by:The aim for this study is further to elucidate the presence of dysautonomia in post-covid-19 patients, by evaluating heart rate variability.
Postural Orthostatic Tachycardia Syndrome (POTS) is characterized by symptoms of chronic orthostatic intolerance such as fatigue, lightheadedness, dizziness, palpitations and by pronounced tachycardia upon standing. The aims of the present research study are to test whether a daily transcutaneous vagal nerve stimulation (tVNS) performed for 14 consecutive days may improve heart rate response and reduce disabling symptoms while standing.
The most common form of dementia is Alzheimer's disease, with 900,000 people affected in France in 2015 and a forecast of 1.3 million in 2020. As a consequence of their advanced age, dementia patients often suffer from pain, mainly musculoskeletal or neuropathic pain. However, the exact prevalence of pain in dementia is underestimated. Indeed, several studies indicate that people suffering from dementia report less pain. This phenomenon is all the more true as the stage of dementia is advanced. In addition, people with dementia receive less pain medication than people without cognitive impairment in similarly painful conditions. Hetero-evaluation alone also seems insufficient, with the result that pain is under-treated compared to patients without cognitive impairment. Better pain screening is a major challenge and self-assessment tools should be favoured as a first line of treatment, even for patients with cognitive impairment. suffering from dementia. The investigators propose in this work to evaluate the variation of vegetative parameters that accompany a painful stimulus. These variations can be recorded at the cardiac, vascular, pupillary or skin conductance level.
The prevalence and incidence of end-stage renal disease in Taiwan ranks highest in the world, and it is based on the 2018 health welfare According to statistics from the Ministry of Foreign Affairs, kidney disease is the ninth leading cause of death in Taiwan. As the course of chronic kidney disease (CKD) progresses, autonomic nervous system dysfunction, inflammation, and physical and psychological symptoms (such as fatigue, sleep disturbance, and depression) will increase, which will further damage the structure and function of the kidney Intensified, increasing the demand for dialysis treatment and the risk of cardiovascular disease, which consumes social and medical costs. If the investigators can intervene in a feasible measure to effectively regulate the autonomic nervous function of CKD patients, reduce inflammation and physical and psychological symptoms, and delay the progression of the disease, it will be the main goal of caring for CKD patients. To explore the intervention of heart rate variability biofeedback, which can improve the autonomic nervous function (heart rate variability [Heart Rate Variability]), inflammatory response (interleukin-6 [Interleukin-6, IL-6], C-reactive protein [ C reaction protein, CRP]) and physical and psychological symptoms (such as reducing fatigue, sleep disturbance and depression).
Dysautonomic signs are well known among girls with a Rett Syndrom. Rett syndrom is caused by a MECP2 mutation in 95% of cases. We want to search dysautonomic signs among boys with a MECP2 mutations because they are less studied than the girls and they have more varied phenotypes.
The function of the autonomic nervous system can be assessed using baroreflex sensitivity (BRS) and heart rate variability (HRV). Decreased HRV has been shown to be predictive of morbidity and mortality in diverse medical conditions such as acute myocardial infarction, aneurysmal subarachnoid haemorrhage, autoimmune diseases, sepsis and surgery. The function of the autonomic nervous system has not yet been investigated in a "pure hypovolemia" model. The aim of the current study is therefore to investigate and describe the function of the autonomic nervous system prior to, during and after reduction of blood volume in healthy blood donors.
A number of clinical features suggest the possibility of dysautonomia in patients infected with SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus 2). At the same time, there is now strong experimental evidence that SARS-CoV-2 can cross the blood-brain barrier, probably via the olfactory nerves, and reach the brain stem, which is located in close proximity. Damage to the brainstem nuclei could explain the suspected dysautonomic episodes, but also the severity of respiratory distress in infected patients, and the difficulty of ventilatory withdrawal encountered in resuscitation, potentially through damage to the ventilation control and regulation centers located in the brainstem. The objective of this study is to record the long term variability in heart rate, reflecting autonomic balance, of patients screened positive for SARS-CoV-2 throughout their stay in conventional care units at the Saint-Etienne University Hospital, in order to see whether there is an autonomic imbalance at screening, whether the worsening of the autonomic imbalance precedes the worsening of the clinical condition, and how quickly the expected correction of the autonomic imbalance follows or precedes that of the disease.
The RANSOM registry is considered as a collection of data with the ultimate purpose of gathering information about the effect of renal denervation in patients of the investigator's center and evaluating the results within the usual clinical practice. The general objective of the study is to evaluate the clinical results (blood pressure, quality of life and levels of catecholamines) as well as safety of renal sympathetic denervation in hypertensive patients, at least in treatment with an antihypertensive drug and with increased variability, considering as such a standard deviation> 10 mmHg for systolic BP and> 5 for diastolic BP of its blood pressure levels, measured by ABPM.
The purpose of this study is to see if using a micro-current through a device called a TENS (Transcutaneous Electrical Nerve Stimulator) unit helps to improve functional gastrointestinal disorder (FGID) symptoms in children by stimulation of the vagus nerve. The study will compare two methods of stimulation to determine if there is a difference in the two methods.
Dysautonomia is malfunction of the autonomic nervous system. It usually results from overactivity of the sympathetic portion and over-secretion of acetylcholine. Symptoms depend on the organ involved by this sympathetic overstimulation. Involvement of the gastrointestinal system results in chronic dysmotility, nausea, vomiting, food intolerance, weight loss and need for feeding tube placement and/or parenteral feeding. Autonomic celiac ganglia resection has been shown to alleviate symptoms as it interrupts the sympathetic stimulation to the gastrointestinal (GI) system, however there is no pre surgery test to confirm the diagnosis. The investigators' objective is to temporarily block the celiac ganglion with a long acting anesthetic (liposomal bupivacaine). If symptoms abate the diagnosis is confirmed and patient will proceed to surgery.