Extended applications of the Amplatzer vascular plug IV in infants.

Objective: A variety of devices are available for transcatheter closure of unwanted shunts. We describe our experience with the use of the Amplatzer vascular plug IV in a consecutive series of infants.

Methods: A total of eight consecutive infants - all born preterm at gestational ages ranging from 24 to 35 weeks - undergoing transcatheter closure of unwanted shunts - persistently patent arterial duct in five patients, an aorta to right atrium fistula in one, multiple aortopulmonary collateral vessels in one, and an azygos vein to left atrium connection in one - are described.