Active clinical trials for "Bradycardia"

The purpose of this clinical project is to evaluate the efficacy of the presence of Right Ventricular Apical (RVA) pacing induced ventricular dyssynchrony as a guiding parameter for bi-ventricular pacing in patients with bradycardia and normal left ventricular ejection fraction (LVEF). The results of this project may provide with the evidence based medicine for guidelines expansion of using Cardiac resynchronization therapy (CRT) in patients with Heart Block and normal LVEF (LVEF >45%).

The IBSY04 clinical investigation is an European, prospective, multi-centre, non-randomized, longitudinal study.

The COMPARE-Adapta study is a randomized, multi-center, prospective study conducted in China. The purpose of the study is to compare the ability of Search AV™+ and Managed Ventricular Pacing® (MVP®) to reduce ventricular pacing in dual chamber pacemaker-indicated patients. The COMPARE-Adapta study will also observe atrial fibrillation (AF) burden as demonstrated by Cardiac Compass® and the clinical profile Adapta® pacemaker patients.

The aim of this study is to assess the efficacy of Iv hyoscine butylbromide in preventing Bradycardia during cesarean section under spinal anaesthesia with local anaesthetic and morphine.

Patients undergoing total knee arthroplasty with spinal anesthesia are often sedated to reduce patient discomfort due to large noises during surgery and also to reduce anxiety. Most commonly used sedatives include propofol and midazolam, but these agents often cause hypotension or respiratory depression, especially in elderly patients. Dexmedetomidine is a selective alpha 2 adrenergic drug, which acts as a sedative and also has analgesia effects. In contrast to propofol or midazolam, dexmedetomidine rarely causes respiratory depression, and therefore is often used in critically ill patients in the ICU and also in patients undergoing simple procedures. Hemodynamically, dexmedetomidine evokes a biphasic blood pressure response with a short hypertensive phase and subsequent hypotension. Bradycardia is also observed in many patients, which may lead to more serious outcomes in elderly patients who often have multiple comorbidities. Therefore, drugs to prevent bradycardia during dexmedetomidine infusion may help patients maintain a more stable hemodynamic state. The present study aims to compare the ability of atropine and glycopyrrolate to prevent bradycardia during dexmedetomidine infusion in elderly patients undergoing knee surgery with spinal anesthesia.

Cardiac arrhythmias are a well-recognized complication of anesthesia for laparoscopy. The aim of this study was to evaluate the efficacy of atropine sulfate for prevention of brad arrhythmia induced by repeated succinylcholine during gynecological laparoscopic surgery.

Establishing breathing after birth is vital for survival and long-term health of premature babies. 10% of all preterm babies fail to breathe after birth and require help with breathing. When infants need help with breathing the clinical team will place a small mask on the babies face to give some breaths to help the baby breath (what the investigators call mask ventilation). This procedure is done million times a day around the world and several times a day here at the Royal Alexandra Hospital. Providing these breaths via mask ventilation is the most difficult step in helping a baby breath at birth. If this is provided wrongly then baby does not receive enough oxygen, which could damage the brain and even cause death. To keep the skill level of every staff member up-to-date every staff member is required to re-train this rescue breaths via mask ventilation once every two years. The investigators believe this is not enough and that daily trainings are necessary to keep your skills up-to-date. The investigators aim to compare to different teaching techniques using daily trainings to see if either improves the skills of the resuscitator providing mask ventilation The study will last 7 month (baseline observations (2 months), intervention period (3 months), After trial period (2 months) The investigators will use our routinely used equipment to record neonatal resuscitation and the investigators also routinely make video recordings to evaluate performance during resuscitation.

Patients requiring long term anticoagulation often undergo transition of their warfarin to heparin in anticipation of invasive surgical procedures such as pacemaker or ICD implantation. This may require inpatient hospitalization several days prior to and after the procedure, potentially increasing medical costs and patient inconvenience. Patients undergoing such a process are initiated on heparin while their INRs drift to normal levels. Immediately prior to surgery, heparin is discontinued and restarted several hours after the procedure. Unfortunately, this process has resulted in a high incidence of surgical wound hematomas and other bleeding complications often requiring longer periods of discontinued anticoagulation or repeat surgical exploration. Previous investigators have tried to reduce the incidence of wound hematomas by prolonging the time from surgical wound closure to the reinitiation of heparin. A small randomized trial demonstrated that there was no significant difference in the incidence of wound hematomas whether heparin was started 6 hours or 24 hours after surgery (J Am Coll Cardiology 2000;35:1915-8). This has led many investigators to perform pacemaker and ICD implantation without reversal of warfarin therapy. A recent retrospective observational study demonstrated that the incidence of wound hematomas in patients with an INR of 2.6 was no different than patients with an INR of 1.5 (PACE 2004;27:358-60). Furthermore, a more recent, larger retrospective observational study reported in abstract form at the recent Heart Rhythm Society Annual 2007 Scientific Meeting demonstrated that not only is performing pacemaker and ICD implantations safe without reversing warfarin anticoagulation, but the incidence of wound hematomas is significantly smaller as compared to the strategy of reversing warfarin and initiating periprocedural heparin. Given these findings, the hypothesis of this randomized study is that pacemaker and ICD implantation while fully anticoagulated on warfarin therapy is safe. Findings from this study will have significant implications on the clinical practice of pacemaker or ICD implantation in this patient population given that no randomized study on this subject has been performed to date.

The purpose of this study is to document the number of falls and fractures in Sinus Node Disease (SND) patients.

The purpose of this clinical study is to confirm safety and efficacy in the clinical magnetic resonance imaging (MRI) environment of the investigational EnRhythm MRI™ SureScan™ Pacing System (used in support of Revo MRI™ SureScan Pacing System launch).