View clinical trials related to Heart Rate and Rhythm Disorders.
Filter by:This study will record patient electrocardiograms - as well as various other body signals (e.g., blood pressure, pulse wave, peripheral hemoglobin oxygen saturation) - as monitored routinely both during and immediately subsequent to surgical operations performed under general anesthesia. Through retrospective analysis of patients' heart rate variability (HRV), in concert with the other abovementioned parameters, the investigators seek to forward the development of novel mathematical models and tools for on-line detection of cardiovascular and autonomic dysfunction in the perioperative setting.
This will be a randomized, controlled, parallel-group clinical trial. The aim of this studio will be to evaluate the effectiveness of "Hands/Eyes/mouth" behavior management technique versus a conventional technique (covering the patient´s vision) during an inferior alveolar and lingual nerve block in preschool children referred for treatment at the School of Dentistry, Cardenal Herrera CEU University (Valencia, Spain). The sample will consist of 52 children from 3 years old to 5 years 11 months old who need dental pulp treatment and/or tooth extraction of primary molars. Preschool children with no history of allergies to Lidocaine or systemic/neurological diseases and who did not take local anesthesia before the study will be include in this research.
During laryngoscopy and endotracheal intubation, stimulation of supraglottic regions leads to an increase in the plasma catecholamine concentrations due to the activation of the sympatho-adrenal system. Prevention or reduction of this increment is important for hemodynamic control. Therefore, various methods such as providing adequate depth of anesthesia and shortening the time of laryngoscopy were used. On the other hand; alternative laryngoscopy devices and techniques have recently started to be used. In this randomized single blind study, the aim is to compare the hemodynamic responses of four different laryngoscopy techniques with Macintosh laryngoscope, McCoy laryngoscope, C-Mac videolaryngoscope and McGrath videolaryngoscope in patients with normal predictive airway.
Acute atrial fibrillation is the most common sustained, clinically significant dysrhythmia encountered in the emergency department (ED) and the most common dysrhythmia treated by emergency physicians. Atrial flutter is less common than atrial fibrillation but its management in the ED is very similar, and the majority of patients with atrial flutter also have atrial fibrillation. Symptomatic relief and ventricular rate control are generally the primary therapeutic objectives in the ED management of acute atrial fibrillation and flutter (AFF). The need for swift, appropriate action by the emergency physician is highlighted by the fact that up to 18% of patients with AFF develop potentially life-threatening complications such as congestive heart failure, hypotension, ventricular ectopy, respiratory failure, angina and myocardial infarction. Both beta-blocking agents and calcium channel blockers are commonly used to treat AFF in the ED. Metoprolol is the most commonly used beta-blocker; and diltiazem is the most frequently used calcium channel antagonist.[8] Diltiazem was released by the FDA for treatment of AFF in 1992. Shreck et al. were the first to demonstrate both the efficacy of diltiazem in the ED management of AFF with rapid rate and its clear superiority over the previously most commonly used pharmacologic agent, digoxin. To date, only one prospective, randomized trial has compared the effectiveness of a calcium channel blocker (diltiazem) with a beta-blocker (metoprolol) for rate control of AFF in the ED. Despite the relatively small sample size (n=20 in each group) the authors concluded that both pharmacologic agents were similarly effective. In order to test this finding, the investigators conducted a prospective comparison of metoprolol and diltiazem for the management of patients presenting to the ED with AFF with rapid ventricular rate.
The purpose of this study is to assess functional capacity, quality of life and functioning of the autonomic nervous system in heart failure patients on beta-blocker treatment. The study hypothesis is that subjects who walk less distance, have lower quality of life and reduced heart rate variability during the six minute walk test.
This will be an open randomized clinical trial involving pregnant women between 35 and 37 weeks randomized to two modalities of exercise: treadmill or stationary bike. The study hypothesis is that exercise on a stationary cycle causes less maternal and fetal effects in relation to treadmill exercise.We will study the acute effects of exercise for both the mother and the fetus, monitoring the parameters before, during and after exercise for 20 minutes. The exercise intensity will be moderate, remaining between 60% and 80% of maximum heart rate. Women will be monitored with a recording equipment of ABPM (ambulatory blood pressure monitorization) and continuous cardiotocography and blood will be collected to measure blood glucose, total cholesterol and HDL, nitrate and lactate before, during and after exercise. The analysis variables are: maternal heart rate and blood pressure, fetal heart rate, number of fetal movements, transient accelerations, decelerations, short-term variability, episodes of high variability, uterine tone, glucose, lactate, nitrate, total cholesterol and HDL.The analysis will be based on intention to treat, according to the recommendations of the CONSORT (2010).