Loading clinical trials...
Loading clinical trials...
Discover 19,805 clinical trials near Atlanta, Georgia. Find research studies in your area.
Showing 15961-15980 of 19,805 trials
NCT02089672
Abnormal heart rhythms or arrhythmias are often managed by a procedure in which a catheter is introduced into the heart. These catheters can then cauterize abnormally functioning portions of the heart muscle with the hope of returning the heart to a more effective rhythm. In the process of performing such a procedure, called a catheter ablation, an operator must be able to accurately sense electrical activity displayed on computer screens in different parts of the heart, provide sufficient localized energy to the abnormally behaving tissue (ideally without damaging uninvolved heart structures), and accurately reassess the electrical activity of the heart to ensure the spot in the heart has been cauterized. When sensing electrical activity of the heart, specialized catheters produce recordings on a computer screen known as electrograms (EGM). To produce this recording conventional catheters commonly use a positive and negative electrode, from which the difference between the two provides the EGM. The distance between the two electrodes varies from device to device. The greater the distance between them, the less accurate the measurement of local electrical activity becomes. This may result in poorly localized or excessive use of energy that could be damaging to normal heart structures or put the patient at risk for the return or development of additional arrhythmias. The IntellaTip MiFi catheter has been constructed with a specialized sensing tip that uses "microelectrodes" that are relatively close in proximity (\<1 mm apart) with the hope of improving the sensing capability of the device. This study will analyze the signals obtained from this FDA-approved catheter in people undergoing a catheter ablation procedure. The study will examine signals after the procedure is finished and will not prolong or differ the process from a standard ablation procedure. The goal of this study is to determine the ability of the microelectrodes to distinguish ablated, or cauterized versus non-cauterized tissue.
NCT00902213
This will be the first multidisciplinary, randomized, longitudinal trial of a tailored, parent- and child-focused physical activity program for children (ages 4- \<19 years) with newly diagnosed ALL. It will test the ability of the intervention to prevent or diminish early physical function limitations and improve health-related quality of life (HRQL). The intervention will be tested for its effect on: 1) physical function outcomes (muscle strength, range of motion, endurance, gross motor skills), bone density and bone mineral content (end of therapy only); and 2) HRQL. This multi-site trial will test the intervention in 76 evaluable children with ALL (38 receiving the intervention and 38 receiving a placebo "minimal movement" standard care strategy).