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Study Hypothesis: Clinical staging without laparotomy/splenectomy is adequate for children and young adults with Hodgkin's disease who receive chemotherapy as a component of treatment.
A randomized control trial of bimanual training. The protocols have been developed at Columbia University to be child friendly and draws upon our experience since 1997 with constraint-induced movement therapy in children with cerebral palsy.
Pacemakers can be attached to one or more than one of the heart chambers. After watching pacemakers work over time, doctors have found that the pacemakers that stimulate only one chamber of the heart sometimes lead to problems later. These problems may be changes in the size and shape of the heart. The heart cannot work as well when some of these changes happen. We need to learn more about these changes and how to prevent them. There has not been an easy way to do this. A new treatment called Cardiac Resynchronization Therapy (CRT) is associated with biventricular pacing where two chambers of the heart are stimulated simultaneously. Tissue Doppler Imaging,Tissue Synchronization Imaging and 3 dimensional echocardiography are new forms of technology that look at the heart while it works. They are similar to a moving x-ray that can watch the heart muscles moving. The movement can be measured. Doctors will check for changes that happen over time. This has not been studied in children before because this kind of is new to this group of patients. This technology is noninvasive which means it can be done from the outside of the body and is painless. The hearts of children grow fast. It is important to be able to know if the pacemaker or problems from dilated cardiomyopathy are causing any changes in the heart that might cause problems. We expect to be able to use information we learn from this study to improve how we use pacemakers in the future to avoid problems that can happen over time.
During open-heart surgery, blood flow is supported by a heart-lung machine that both pumps the blood and gives it oxygen. A problem associated with a heart-lung machine is the damage to some of the blood caused by protein in the blood cell sticking to the sides of the heart-lung machine tubing. This breakdown of the blood cell affects the platelets, which help the blood to clot. Use of the un-treated circuit will be phased out within the next few years, as newer technology is available. The use of coated tubing has been shown to decrease problems with post-operative bleeding in the adult population. No studies have been done on the pediatric population. We plan to perform a prospective, randomized study using the un-treated circuits used now, the " Smart" circuit tubing manufactured by Cobe Cardiovascular Inc., Arvada, CO and the PMEA circuit manufactured by Terumo Corporation, Tokyo, Japan. Randomization will be performed by the perfusionist (the person that runs the heart-lung machine) in charge of the case. No one else will be aware of which circuit is being used. There will be no changes in the operation of the heart-lung machine, anesthesia or the surgery because of this study. Blood testing that is standard of care and some additional tests will be performed on a small amount of blood drawn from. the patient via arterial lines. Additional blood sticks will not be required to obtain this sample.