View clinical trials related to Autonomic Imbalance.
Filter by:The present study investigates the efficacy of a brief and cost-effective video-intervention that combines bottom-up elements of deep breathing and third-wave cognitive behavioral therapy techniques (i.e., mindfulness and compassion) on coping strategies during the COVID-19 pandemic.
Biomarkers can be evaluated to provide information about disease presence or intensity and treatment efficacy. By recording these biomarkers through noninvasive clinical techniques, it is possible to gain information about the autonomic nervous system (ANS), which involuntarily regulates and adapts organ systems in the body. Machine learning and signal processing methods have made it possible to quantify the behavior of the ANS by statistically analyzing recorded signals. This work will aim to systematically measure ANS function by multiple modalities and use decoding algorithms to derive an index that reflects overall ANS function and/or balance in healthy able-bodied individuals. Additionally, this study will determine how transcutaneous auricular vagus nerve stimulation (taVNS), a noninvasive method of stimulating the vagus nerve without surgery, affects the ANS function. Data from this research will enable the possibility of detecting early and significant changes in ANS from "normal" homeostasis to diagnose disease onset and assess severity to improve treatment protocols.
The study aimed to investigate the effects of high-definition transcranial random noise stimulation over bilateral prefrontal cortex on psychopathological symptoms, other clinical outcomes, autonomic functioning ,and brain oscillatory activity in schizophrenia patients.
Some studies have compared the clinical profile during propofol induction anesthesia with Target-controlled infusion (TCI) and manually bolus showed similar control of anesthesia, such as depth of anaesthesia and hemodynamic stability, but did not use an objective measure of instantaneous autonomic activity during the brief time of induction anesthesia. In this study, TCI and manually bolus of propofol injection techniques during induction were studied with wavelet-based spectral analysis and the amplitudes of the pulse plethysmographic. The investigators hypothesized that during propofol induction anesthesia, the instantaneous ANS activities was more stable with TCI than traditional manually bolus
The study aimed to investigate the effects of bimodal anodal transcranial direct current stimulation (tDCS) over bilateral dorsolateral prefrontal cortex (DLPFC) on psychopathological symptoms, insight, psychosocial functioning, neurocognitive function and heart rate variability (HRV) in schizophrenia patients
Existing data points to relevant beneficial effects of respiratory exercises on cardiovascular health, with special regards to decreases on arterial pressure and improves on autonomic and vascular profiles, though mechanistics of such results have not yet been cleared. Among the available ways to perform respiratory exercises, there is the highly recommended Inspiratory Muscle Training (IMT) and slow breathing exercises like Yoga pranayamas. Lately, the development of new technologies has allowed the use of Apps to perform respiratory exercises. This study will be take the just developed CardioBreath®App to validate it as a tool to perform respiratory exercises. Therefore, it will be compared to IMT on cardiac vagal modulation and pulse wave velocity on normotensive post menopause women.
This research has two main specific aims. First, a commercially-available stimulator will be utilized to assess the effect of low-level electromagnetic field (EMF) stimulation on atrial fibrillation (AF) inducibility in patients with paroxysmal AF presenting for catheter ablation as compared to sham stimulation. We hypothesize a reduction in AF inducibility in patients treated with EMF stimulation. Second, we aim to assess for the effect of low-level EMF on level of systemic inflammatory mediators. We hypothesize a reduction in the level of the inflammatory mediator tissue necrosis factor (TNF)-α in patients treated with EMF stimulation as compared to sham stimulation. The long-term objective of this research is to develop low-level EMF as a therapeutic alternative for patients with AF, and this research will help to determine the efficacy of low-level pulsed EMF in this regard.
This study evaluates the effects of Horner's syndrome on cardiac autonomic nervous activity after interscalene brachial plexus block. Cardiac autonomic nervous activity and bilateral pupil diameters will be measured in a scotopic light condition, 30 minutes after interscalene brachial plexus block under ultrasound guidance and 15 minutes after the subsequent sitting position.
Recent evidence suggests that there is a directly proportional relationship between diets with a high concentration of antioxidants and the reduction of blood pressure and the risk of cardiovascular events. However, there is a gap with regard to research on the effects of these diets on vascular function, especially in humans. The aim of this study was to evaluate the effect of antioxidant supplementation through the consumption of blueberry, cranberry and pomegranate extract capsules (1 of each per day), the effect of the autonomic balance in hypertensive and normotensive adults.
Peripheral arterial disease (PAD) constitutes a major public health burden. The incidence of PAD increases with age and is associated with other comorbid cardiovascular disorders. Atherosclerosis which underlies PAD is associated with increased arterial stiffness and an enhanced inflammatory state as evidenced by increased levels of pro-inflammatory cytokines and markers. One the earliest signs of cardiovascular disease is endothelial dysfunction which is characterized by a decreased vasodilatory capacity of the vascular endothelium and this lesion predates the development of clinical atherosclerosis. Endothelial dysfunction has been shown to be widely prevalent in PAD. It is postulated that endothelial dysfunction is due to enhanced sympathetic drive, diminished parasympathetic drive, chronic inflammatory state all of which leads to reduced nitric oxide synthase activity in the vascular endothelium with subsequent loss of vasodilatory capacity. Studies have shown endothelial dysfunction to be reversible with pharmaco-therapeutic interventions, though these interventions are associated with their own adverse effects. Stimulation of Vagal nerve increases the parasympathetic activity while suppressing sympathetic drive, decreases inflammation and enhancing nitric oxide synthase activity. Recent experimental and clinical data suggest that low-level tragus nerve stimulation (by stimulating the auricular branch of the vagus nerve located at the tragus of the external ear) may produce the same desired neuromodulator effect compared to vagus nerve stimulation. It is however unknown if Transcutaneous Vagal Stimulation (TVS) would lead to improved endothelial function as measured by flow mediated dilatation (FMD) and laser speckle contrast imaging(LSCI), a non-invasive method of measuring endothelial function or decrease in arterial stiffness as measured by Pulse Wave Analysis (PWA), in patients with PAD. The objective of this study is to determine the impact of TVS on endothelial dysfunction as measured by FMD & LSCI and arterial stiffness. Study population will include patients with established diagnosis of PAD. After performing baseline FMD, LSCI and PWA patients will be randomized to TVS and sham stimulation with cross over. The patient randomized to TVS stimulation will obtain stimulation for 1 hour followed by measurement of FMD,LSCI and PWA. There will be a washout period of at least 24 hours with patient crossing over to the other arms thus serving as their self-control.