There are about 173942 clinical studies being (or have been) conducted in United States. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
The purpose of this study is to evaluate the efficacy and safety of dexmedetomidine in the prevention of postoperative delirium in subjects undergoing heart valve surgery with or without coronary artery bypass surgery (CABG) using cardiopulmonary bypass (CPB).
The purpose of the study is: 1. To compare the efficacy of dexmedetomidine versus chloral hydrate as pediatric sedation agents for EEG studies. Efficacy will be determined by successful EEG study completion and by minimum degree of sedation induced patient agitation (SAS score). 2. To compare the safety and adverse event profile of dexmedetomidine versus chloral hydrate during sedation of pediatric patients for EEG studies. Comparison will be based on variance of vital signs (HR, MAP, RR, O2SAT, ETCO2) from baseline during sedation as well as the frequency of adverse events during and following sedation. 3. To compare quality of EEG recording obtained with dexmedetomidine or chloral hydrate and to those of non-sedated pediatric EEG studies. Quality will be determined by the degree of background beta-wave activity.
The purpose of this study is to determine whether it is safe to receive an injection of your own bone marrow adult stem cells (autologous BM-MNC) to your heart wall during coronary artery bypass graft (CABG).
This study proposes evaluation of an educational tool, a laparoscopic virtual reality simulator. The purpose of this study is to determine whether training on the LapSim Simulator transfers to improved laparoscopic cholecystectomy operative performance in an animal model.
This study is designed to look at outcomes of patients who have undergone hand assisted laparoscopic donor nephrectomy versus totally laparoscopic donor nephrectomy.
Transplant rejection following organ transplant occurs because the recipient's immune system attacks the transplanted organ. The recipients immune system recognizes the transplanted organ as foreign tissue and attempts to destroy it in the similar way that it attempts to destroy infectious agents such as bacteria and viruses. The human leukocyte antigen (HLA) system is a set of genes that is responsible for controlling an individuals' ability to tell the difference between an infectious agent and self tissue. Differences in HLA genes between donors and recipients play a major part in influencing the rejection or acceptance of foreign tissue (i.e. transplanted organs). Due to time limitations in heart transplantation, HLA matching is not considered. It is unclear how individual HLA differences affect the recovery and expected lifespan of pediatric heart transplant recipients. This study is designed to look at the donor-recipient matching and mismatching to determine if mismatching leads to more complications, shorter graft survival and, therefore, increased risk of death following pediatric heart transplantation.
Vitamin D is a natural nutrient in normal daily diet. It can also be made in the skin after exposure to sunlight and is essential for maintaining normal calcium balance. One past study has suggested that vitamin D may be helpful for blood pressure. This study will test whether pills containing cholecalciferol (a form of vitamin D) or calcitriol (the active form of vitamin D) can treat high blood pressure. The investigators plan to enroll up to 80 subjects at the Atlanta VA Medical Center. Participation in the study is expected to last up to 4 weeks. Subjects will be assigned to cholecalciferol, calcitriol or placebo). A 24-hour blood pressure monitor will be worn at the beginning and end of the study to determine blood pressure changes. Renin, PTH, angiotensin-II, and aldosterone levels will also be measured at the beginning and end of the study.
Anemia is a common disorder in infants with one working chamber of the heart that pumps blood. Anemia is when the level of healthy blood cells becomes too low. This may cause other health problems because red blood cells contain hemoglobin, which carries oxygen (needed for survival) to different parts of the body. This study will look at the role of iron in preventing anemia in infants with one pumping chamber. The importance of iron therapy will be examined. Hypothesis: Prophylactic use of iron in infants with single ventricle is effective in preventing anemia.
The purpose of this study is to determine whether SPD465 is safe and effective in the treatment of ADHD in young adult drivers after a duration of 16 hours.
Liberal intravenous fluid resuscitation during open abdominal surgery may predispose the patients to multiorgan dysfunction, prolong hospital stay and increase postoperative morbidity. The main aim of the study is to assess the safety and feasibility of restricted fluid regimen in open abdominal bowel surgery.