View clinical trials related to Heart Block.
Filter by:In this study the difference between screw in leads actively fixed in the septum and tined leads passively fixed in the apex concerning electrical parameters and implantation time will be evaluated. In addition the influence of the stimulation location by type of lead on QRS width, ejection fraction and NYHA class will be evaluated using and electrocardiogram and echocardiogram.
This study is to determine 1) the incidence of altered right bundle conduction, including CRBBB, IRBBB or rsR’ pattern in the Taipei city based on the school survey databank from 1999 to 2002, 2) the associated cardiac lesions, 3) clinical presentations relevant to the altered right bundle conduction, 4) the association with QTc prolongation and dispersion and HRV from a 5-minutes recording. Finally, molecular characterization for those with CRBBB or Brugada pattern EKG, especially those with positive family history will be studied.
Women with lupus and other related disorders produce certain antibodies in the blood. Some women have these antibodies even if they have not yet developed symptoms of lupus or Sjogren's syndrome. When these women become pregnant, they may pass the antibodies to their infants. The infants may then develop a disease called neonatal lupus. The symptoms of neonatal lupus include an abnormally slow heart beat (heart block) and a skin rash. This registry collects information on women and infants affected by neonatal lupus as well as other family members who may be healthy.
Some newborns are born with congenital heart block (CHB), a condition occurring in babies with neonatal lupus. The first part of the study will test the effectiveness of fluorinated steroids, including dexamethasone, in improving the heart function and general health of newborns who have auto-antibody-associated CHB. The second part of this study will use ultrasound and heart monitoring to observe high-risk pregnant women and their fetuses during the third trimester of pregnancy.