Transcatheter Closure of Atrial Septal Defects (original) (raw)

The first transcatheter closure of an atrial septal defect (ASD) was performed by King and Mills in 1976. The Lock Cfunishell occluder and flze hi4ttooned &lice are the latest devices to undergo clitziwl trials. Successful transcaihefer closure hus been possible with minimal morbidity and mortality. Small residual shunts may remain, however. in up to 20% of patients 1 year after the procedure. The clinic-a1 signifc8unce and natural history qf these small residuul atrid commiinirutinns remains to be determined. This article reviews the history and development of the current ASD closure techniques, with emphasis on the experience with the L,ock Clumshell orl-luder and the hitttoned device. (J Interven Cardiol 1995;8:533-542) delivery system in positioning the device parallel to the atrial septum, were additional liabilities of the Rashkind devicc.