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Last Updated: 01/06/2023

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11 Clinical Trials
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The Effect of Water Carbonation on Orthostatic Tolerance

Summary: The primary purpose of this investigation is to determine whether water carbonation can improve orthostatic tolerance in healthy control volunteers. Orthostatic tolerance refers to the ability to maintain an adequate blood pressure when standing. In some individuals blood pressure can fall when standing, predisposing to dizzy spells or fainting episodes. Drinking water can boost blood pressure and...

Determining the Effectiveness of Counterpressure Maneuvers in Pediatric Patients Presenting With Syncope to the Emergency Department

Summary: The investigators will assess the efficacy of clinically recommended counterpressure maneuvers (CPM) in preventing syncope for paediatric patients. Participants presenting to the emergency department (ED) will first provide written informed consent. In stage I, they will be asked to complete a brief survey documenting the presentation of their syncopal episode, and any prodromal symptoms they expe...

Different Catheter Ablation Strategy in Vasovagal Syncope: A Single Center, Prospective, Randomized Study

Summary: This study is a prospective, single-center randomized controlled clinical trial. patients with refractory vasovagal syncope were randomly divided into two groups according to the proportion of 1:1. Group A: simple left atrial ganglion plexus ablation (RAGP + LSGP + LLGP + LIGP + RIGP ablation); B group: left atrial ganglion plexus combined with right atrial ganglion plexus ablation (group A + cons...

A Randomized, Prospective, Placebo-Controlled, Crossover Study of Atomoxetine in the Prevention of Vasovagal Syncope (POST7)

Summary: Project rationale: Vasovagal syncope (VVS) affects up to 50% of people, and recurrent syncope markedly reduces quality of life. We recently reported that it is frequently associated with injury and not surprisingly with clinical anxiety. Although conservative measures help many patients there remain many who require more care. CIHR-funded studies have shown that fludrocortisone and midodrine are e...

Randomized Trial of Cardioneuroablation in Reflex Syncope Treatment (CARDIOSYE Trial)

Background: Reflex syncope is a disease of benign etiology but in severe cases it can be disabling and it carries a risk of severe trauma. Today, there is no proven etiological treatment and only palliative treatments are used, namely a change in hygienic and dietary habits, certain drugs or, in the most severe cases, the implantation of a pacemaker. Cardioneuroablation is a novel technique that acts by ablat...

VINCI-AD: An Investigation of Transcutaneous Vagus Nerve Stimulation in Mild Cognitive Impairment

Summary: The VINCI-AD study will investigate the impact of non-invasive vagus nerve stimulation (VNS) on memory in participants with existing mild memory impairment. VNS is a safe, existing treatment, licensed in epilepsy and depression. Until recently, stimulating the vagus nerve involved an operation (invasive VNS) but we can now perform VNS by stimulating a nerve in the outer ear with a very gentle curr...

The Effect of Capsaicin-Phenylephrine-Caffeine Formulation on Aborting Tilt Induced Syncope in Patients With a History of Vasovagal Syncope

Summary: Syncope is defined as transient loss of consciousness associated with inability to maintain postural tone with rapid and spontaneous recovery. The purpose of this study is to assess the effects of sublingual administration of a new medication called CPC on tilt-induced syncope in patients with a history of vasovagal syncope (VVS). 132 participants will be enrolled at the University of Wisconsin - ...

Compression Stockings for Treating Vasovagal Syncope (COMFORTS II) Trial; a Double Blind, Multi-center Randomized Controlled Trial

Summary: Syncope, a sudden, transient loss of consciousness (TLOC), is a common inconvenience of daily function and quality of life (QoL). The vasovagal syncope (VVS) is the most common type of syncope, which central and peripheral stimuli may trigger syncope by decreasing peripheral vascular resistance, bradycardia, or both. The venous return to the heart is one of these triggers which its reduction may o...

Assessment of Stroke Volume and Cardiac Output in Response to Varying Heart Rates and Body Position - a Pacemaker Based Study

Summary: The investigators will seek to determine the effects of different heart rates on both stroke volume and cardiac output using non-invasive hemodynamic assessments. In order to safely manipulate the HR, the investigators will study patients with permanent pacemakers in whom heart rate manipulation can be done in a safe and non-invasive manner.

Endocardial Ablation of Ganglionated Plexi Versus Pacemaker Implantation in Patients With Symptomatic Sinus Node Dysfunction

Summary: Endocardial ganglion plexus ablation (cardioneuroablation) represents a promising therapeutic technique for the treatment of vasovagal syncope (VV), functional atrioventricular block (AVB) and sinus node dysfunction (SND) with a component of vagal hypertonia. Nevertheless, there is currently a paucity of literature about the results according to the type of presentation (VV, AVB or SND). The inves...

Comparison of Outcomes With Midodrine and Fludrocortisone for Objective Recurrence in Treating Syncope (COMFORTS Trial)

Summary: Syncope is a common condition which can disturb daily functions of the patients and impair their quality of lives. It contributes to 0.8 to 2.4% of the visits of emergency rooms. Noticeably, studies demonstrated that the lifetime prevalence of syncope is as high as 41% with a 13.5% recurrence rate. The cornerstone of the treatment of vasovagal syncope (VVS), the most common type of syncope, is lif...

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Last Updated: 01/06/2023