View clinical trials related to Syncope, Vasovagal.
Filter by:Reflex syncope is the most common form of syncope. It can lead to injuries and affect quality of life. Nonpharmacological and medical therapies have limited effectiveness. In certain patients, cardiac pacing seem to be beneficial. More recently cardioneuroablation (CNA) has emerged as a novel therapy for reflex syncope. The investigators aim to determine whether CNA is more effective than cardiac pacing at reducing the rate of cardioinhibitory-type reflex syncope.
This is a prospective, international multi-center, open-labeled, randomized trial. The investigator speculated that CNA prevents more patients with moderate to severe VVS from syncope recurrence compared to midodrine.
The main purpose of this study is to assess the reliability of a new cuffless patch BP monitor in detecting episodes of hypotensive (pre)syncope during tilt testing.
The main purpose of this study is to assess the reliability of a new patient's self-administered wearable watch-type BP monitor in detecting episodes of hypotensive (pre)syncope. Secondary aim regards the estimation of feasibility of this tool.
About 20% of adults faint recurrently. These patients are often highly symptomatic, have problems with employment and driving, can be injured, and have poor quality of life. There are few therapies that have withstood the test of randomized clinical trials. the investigators will conduct a prospective, randomized, parallel, double-blind, proof-of-concept study that tests the hypothesis that serotonin 5HT3 receptor inhibition with ondansetron prevents tilt-induced vasovagal syncope (VVS) and pre-syncope in patients with clinical VVS. A total of 70 patients with quantitative clinical diagnostic criteria for VVS and at least 1 syncopal spell in the preceding year will be randomized in a double-blind acute phase 2 study to ondansetron 8 mg PO BID x 2 doses or matching placebo. The endpoint will be presyncope or syncope associated with diagnostic hemodynamic changes. These data should provide useful preliminary data as a foundation on which to conduct a subsequent randomized clinical trial.
Multicenter Italian interventional "proof of efficacy" clinical trial that aims to evaluate the incidence of asystolic pauses and heart rate in patients with CNS who performed severe CNA identified through asystolic pauses identification by implantable loop recorder. The study is independent, "investigator-initiated," sponsored by a nonprofit scientific association called the Italian Multidisciplinary Group for the Study of Syncope (GIMSI).
SynABPM 2 proof-of-efficacy is a retrospective, multicentre, observational study performed in patients affected by hypotensive reflex syncope who had performed two ABPMs, one before and another after any therapeutical intervention aimed to increase arterial blood pressure
Identifying the mechanism of non-cardiac syncope is the essential prerequisite for an effective personalized therapy. Aim of this multicentre, prospective, cross-sectional, observational study is to assess effectiveness and diagnostic yield of a two-step standardized assessment which consists of 24-hour ambulatory blood pressure monitoring (ABPM) and of tilt-table Short Cardiovascular Autonomic Function Battery (SCAFB) which consists in carotid sinus massage (CSM), limited to patients ≥40-year-old, standing test, and head-up tilt test (HUT) performed one after the other in an uninterrupted sequence as a single procedure on a tilt table
The present study aims to: 1. Estimate the prevalence of Postural Tachycardia Syndrome and vasovagal syncope among adults patients attend the Internal Medicine Clinic and ICU in period from 11/2022 to 10/2023 2. Detect of causes and the relationship between POTS and vasovagal syncope and serum electrolytes, and serum cortisol.
The investigators are interested in whether discrete counterpressure maneuvers, or muscle movements in the lower body, will boost blood pressure and cardiovascular control in children who faint. We will record cardiovascular responses to maneuvers of exaggerated sway, leg crossing, crouching, and gluteal muscle tensing in children who faint (N=20), as well as their height, weight, muscularity, and pubertal (Tanner) stage. Autonomic cardiovascular control will be measured using a Valsalva manoeuvre (expiration against a closed airway for 20 seconds) and a supine-stand test. The primary outcomes are noninvasive measures of cardiovascular responses to the maneuvers (blood pressure, cerebral blood flow, and stroke volume (volume of blood pumped per heartbeat). Comparisons will be made across levels of sex, diagnosis, Tanner stage, muscularity, height, and degree of autonomic control.