under contract means there is an offer on it already and the buyer and seller are negotiating back and forth to come to an agreement. if ya need any more help just e-mail me. Lori lspalletta Â· 1 decade ago
Premature atrial complexes are caused by abnormal electrical impulses transmitted by the atria (either of the upper chambers of the heart). The abnormal electrical impulses cause contractions of the upper chamber of the heart earlier than expected. Such premature beats are generally harmless. slide 1 of 7.
An atrial septal defect (ASD) is a hole in the wall between the two upper chambers of your heart (atria).The condition is present from birth (congenital). Small atrial septal defects may close on their own during infancy or early childhood.Large and long-standing atrial septal defects can damage your heart and lungs.ayo Clinic in Minnesota has been recognized as one of the top Cardiology & Heart Surgery hospitals in the nation for 2015-2016 by U.S. News & World Report. An atrial septal defect (ASD) is a hole in the wall between the two upper chambers of your heart (atria). The condition is present from birth (congenital).