View clinical trials related to Primary Dysautonomias.
Filter by:This study will explore whether ivabradine lowers heart rate, and thus improves exercise capacity, in survivors of lymphoma who have an elevated resting heart rate as a side effect of prior radiation treatment. The drugs involved in this study are: - Ivabradine - Placebo
The Center for Autonomic Medicine in Pediatrics (CAMP) has collaborated with doctors from around the world to build the first International ROHHAD (Rapid-onset Obesity with Hypothalamic Dysfunction, Hypoventilation and Autonomic Dysregulation) REDCap (Research Electronic Data Capture) Registry. This registry is an international collaboration with ROHHAD patients and their physicians recruited from around the world. The purpose of this IRB-approved research study is to gain a better understanding of the various health problems ROHHAD patients face with advancing age, and how these relate to each patient's specific medical course. With a better understanding of specific ROHHAD and associated clinical manifestations, we will be able to better anticipate healthcare needs and to provide more accurate guidelines to healthcare providers world-wide in caring for patients with ROHHAD. The study aims to obtain detailed phenotypic information (information about health and well-being) on patients with ROHHAD. Participation would require filling out a confidential survey that asks questions regarding health and past medical history. Involvement in the project is completely voluntary and there is no compensation for taking part. However, this project will help us learn more about this devastating disease, with the goal of advancing treatment.
This study compared the changes in the cardiovascular, hemodynamic and metabolic variables of hypertensive patients who received aerobic physical training with intensity determined by the protocol of double non-exhaustive efforts (DENE) with that of patients who received routine outpatient care 12 weeks after Entry into the study. 63 men and women participated in the study and were allocated in the intervention group (n = 42) and control group (n = 21).The following were performed: Cardiopulmonary exercise test (TECP) for evaluation of peak oxygen consumption (VO2peak), oxygen pulse and double product; DENE protocol for the determination of the intensity of the training. It was obtained the recording of the intervals between consecutive heart beats (iRR) to evaluate the autonomic modulation of the heart rate. Body mass index, waist circumference (AC), hip circumference (CQ) and Waist / hip ratio (WHR) were measured.
To determine the effect of cognitive behavioral therapy (CBT) in the severity of anxiety and depression in adult patients with familial dysautonomia. Patients will be enrolled in an 8-week CBT program. All CBT sessions will be done either in person at the NYU Dysautonomia Center or over the phone to help accommodate disability and potential physical limitations of our patient population.
Neurogenic Orthostatic Hypotension (NOH) is clinically defined as a consistent drop in systolic blood pressure (SBP) ≥30mmHg upon standing from a seated or lying position. However, 50% of NOH patients also have associated supine hypertension. It has been proposed that supine hypertension is the result of intact post-ganglionic sympathetic nerves and therefore due to residual sympathetic tone. Furthermore, research investigating the effects of melatonin shows blood pressure implication of this naturally secreted hormone. Specifically, melatonin has been investigated as a non-traditional anti-hypertensive agent for patients with essential and nocturnal hypertension. Central and peripheral mechanisms have been proposed to help explain how melatonin reduces blood pressures. Therefore, we aim to identify NOH patients as having either intact or denervated post-ganglionic sympathetic nerves, monitor the correlation to supine hypertension and subsequently investigate the effects of melatonin on blood pressure in these patients.
The purpose of this study is to identify daily activity patterns, negative life events and autonomic abnormalities that may be related to non-improvement in myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). For both naturalistic studies and behavioral intervention trials, roughly 50% of patients report worsening or unchanged illness. The proposed four year study would be the first to look at the relation between illness non-improvement, patient activities at home and autonomic function. Our long-range goal is to identify physiological signals and activity patterns that predict non-improvement and relapse and develop a self-management program that prescribes improvement-linked behaviors and discourages non-improvement activities.
The investigators are studying the initial autonomic alterations in participants recently diagnosed with DM2 and in those patients classified as Pre-Diabetes, mainly focused on the baroreceptor sensitivity and on the peripheral sympathetic innervation.
Autism Spectrum Disorders (ASD) is a neurodevelopmental disorder which involves social and behavioural impairments. Autonomic dysfunctions and disturbed sleep were often associated to ASD. The investigators proposed to explore the impact of physical activity on these disorders. In this context, it is necessary to characterize the cardiorespiratory capacities of ASD children in order to promote physical activity for this population. To examine potential differences between ASD and control children, some explorations were proposed: a maximal treadmill test, motor evaluation, and orthostatic test (for the evaluation of autonomic nervous system). An actimetry during one week (evaluation of physical activity and sleep) completed this study in order to specify sleep characteristic and established the possible link between physical activity sleep characteristics and physical fitness in ASD children.
The purpose of this study is to see if some people with postural tachycardia syndrome (POTS) have higher levels of immune proteins (autoantibodies) directed against receptors of the autonomic nervous system, and if these autoantibodies make a difference in their POTS symptoms. The investigators also want to see if the levels of these autoantibodies stay the same over time.
To determine whether the changes in blood pressure (BP) which occur following meals in normal people and patients who have substantial falls in BP after a meal postprandial hypotension (PPH)) are associated with changes in cardiac function. Eligible subjects who have been previously diagnosed with PPH will report to the Queen Elizabeth Hospital, on two occasions, following an overnight fast. Subjects will be cannulated and have a BP cuff placed around their upper arm. Following this, subjects will ingest either a drink containing 75 grams of glucose and 150mg of a C13 Acetate (which is metabolised and excreted in the breath, enabling noninvasive measurements of gastric emptying), made up to 300mL water, or on the other study day, 300mL water alone. The order of the study days will be randomised. Following the drink, for 3 hours, measurements will be taken at regular intervals of BP, heart rate, breath samples (on the study day with the Acetate only), blood samples (for measurement of blood glucose and gut hormones) and transthoracic echocardiography (TTE) (for assessment of end systolic and diastolic cardiac volume, cardiac output, cardiac contractility and diastolic function). After the 3 hours of measurements, the cannula will be removed and subjects will be offered lunch prior to leaving the department. Following lunch, on one study day, subjects will have their autonomic nerve function tested noninvasively, using an ECG.