View clinical trials related to Syncope.
Filter by:Traditional temporary pacing catheter insertion by intracavitary electrocardiogram (IC-ECG) monitoring which only monitoring tip polar, the negative one. The investigators modified the technique by monitoring both negative and positive polar which will be precisely locating catheter tip and indicating the direction of the catheter tip. Extensively used temporary pacing catheter tip has two electrodes which are about 1 cm apart. Distal electrode is negative (-) and active, proximal electrode is positive (+) and indifferent. Investigators use both distal (-) and proximal (+) electrodes which can be attached to any two of the V leads, record as V(-) and V(+). Monitoring positions of the electrodes by V(-) and V(+) could provide more information about the tip position. Comparing the QRS amplitudes between V(-) and V(+), when catheter tip enters right ventricle chamber: the case of V(-) > V(+) infers tip toward apex ventricle wall ; conversely, the case of V(-)<V(+) indicates tip directs to outflow tract. The investigators hypothesis this monitoring will help precisely placement.
Changes of thyroid function may occur after short loss of consciousness, but they haven't been systematically evaluated up to now, although occasional observations suggest temporal increases in TSH concentration. This study aims at assessing transient changes of biomarkers of thyroid function after syncopation and seizure. Results of the study might contribute to an improved detection rate of thyrotoxicosis.
children ; autonomic nervous mediated syncope； vitamin D ; symptom score ; renin-angiotensin-aldosterone-system
The third study on CardNM (CardNMH3 study) is a multicenter, double-blind, randomized trial with a sham control group investigating the efficacy and safety of a computed tomography (CT)-guided, right-sided ablation of the anterior ganglionated plexus to prevent recurrence of syncope in patients with neurally mediated syncope (NMS). The primary goal of the study is to determine whether a CT-guided, right-sided ablation of the anterior ganglionated plexus safely reduces the risk of recurrent episodes of syncope in patients with a history of recurrent NMS. Two-third of the patients will be randomized to the active arm and one-third to the control arm (sham). The study procedure is described in the 'detailed description' and 'intervention description'. Syncope burden, syncope occurrence and quality of life will be assessed by questionnaires at baseline and at 1, 3, 6 and 12 months. A 24-h rhythm registration will be performed at baseline and at 1-, 3- and 6-month follow-up to investigate the influence of the intervention on heart rate. The effect of CardNM on blood pressure and on chronotropic sinus node function will be evaluated in 2 additional substudies. Patients enrolled in the blood-pressure substudy will undergo a 24-h blood pressure monitoring at baseline and at 1, 3 and 6 months. Participants in the sinus node competence substudy will undergo a bicycle exercise test at baseline and at 1, 3 and 6 months. Investigators aim to achieve complete follow-up for 110 patients who meet the study enrollment criteria. If syncope-free survival (primary endpoint) is significantly different between the 2 arms after the enrollment of fewer than 110 patients (minimum 55 patients), enrollment into the trial will be prematurely stopped. The study may also be terminated prematurely if safety concerns occur.
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.
Research in acute care faces many challenges, including enrollment challenges, legal limitations in data sharing, limited funding, and lack of singular ownership of the domain of acute care. To overcome some of these challenges, the Center of Acute Care of the University Medical Center Groningen in the Netherlands, has established a de novo data-, image- and biobank named "Acutelines". Acutelines is initiated to improve recognition and treatment of acute diseases and obtain insight in the consequences of acute diseases, including factors predicting its outcome. Thereby, Acutelines contributes to development of personalized treatment and improves prediction of patient outcomes after an acute admission.
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 lifestyle modifications and patient education to avoid potential triggers of syncope. These recommendations alleviate vasovagal spells in many patients; however, some patients experience life-disturbing vasovagal attacks despite compliance with these modifications. This fact underscores the importance of efficient pharmacological interventions as well. Currently, there is an ongoing controversy about the efficacy of midodrine and fludrocortisone as adjunct pharmacological interventions for the prevention of VVS. In the COMFORTS trial, we are going to evaluate the efficacy of midodrine, fludrocortisone, and lifestyle modifications for prevention of vasovagal attacks in patients with VVS.
Syncope, or transient loss of consciousness, is a common reason for visit to the Emergency Department and often leads to extensive testing and hospitalization. Using objective risk scores to determine which patients with syncope will actually benefit from these interventions, and which can be safely discharged home with minimal testing, is critical to providing sensible medical care. This study will evaluate the validity of two syncope risk-stratification tools and investigate their impact on healthcare utilization and patient safety, thus improving the quality of care for the 1-2 million patients who experience syncope every year in the United States
Actually, there are few data about the effectiveness of remote monitoring (RM) and patient centered alarms setting in patients with unexplained syncope underwent implanted loop recorder (ILR) monitoring. The aim of this study is to evaluate the time from onset of first physician's evaluation of asyntomatic ECG events lead to medical treatment in ordinary clinical practice for syncope patients with ILR patients and compare it between patients followed with RM or conventionally with annual in-hospital visits.
This is a multi-centre, registry-based study whose primary objective is to evaluate the effect of treatment for sleep apnoea syndrome (SAS) on the number of syncope/malaise episodes in a population suffering from both idiopathic, recurrent vasovagal syncope/malaises and SAS.